Multi-body Modeling in Inventor

good evening everyone we're now back and i'd like to introduce my co-host this evening brian dinglassan hello brian good evening paul ma'am nelson good evening of this community introduce yourself to our i am brian dominic tinglassen i i recently i am recently a registered mechanical engineer we had our virtual outtaking this day at 10 a.m like worthwhile taking i also placed top nine in the board examinations this august 2021 nice and we also have andrei hi andrei hello good evening good evening yeah feel free to introduce yourself i am ralph andre i'm a bad schmidt officer brian dominic bignata we came from the same school university of tatanga and yes i i just attended the outtaking with him ago this day and congratulations to both of you and to all who passed the rmt examination okay so um if you have uh yeah questions later guys uh feel free to post it in the comment section as we want this life to be interactive as possible especially to our participants watching via youtube and facebook if you have questions uh posted in our comment section and our instructor will address your questions and will be having or you will be receiving certificate of event participation okay so just register and later before or in the middle i will be having an attendance check okay just to check that you are here okay and uh if you want to obtain a certificate of course completion you need to pass the required output okay so it means um uh whatever the instructor will do tonight and based on his um guidelines or instruction you need to submit it okay for you to have a certificate of um course completion i am a certificate yeah i will check the registration form okay uh yeah let's start our um workshop wrapper so for our first attendance please do post it in the comment section uh your name and the school or company you are connected right now okay so we'll be waiting for your comments and uh while waiting let's play our psne player and team and print good evening to all students of rtu resale technological university and all mechanical engineering schools hello to you okay i'd like to introduce our speaker this evening let me share my screen okay i'll be adding engineer carlos australia hello sir carlos hi nelsey good evening how are you good good thank you so right now circa unless you are in i'm in perth in australia in western australia so yeah it's uh it's basically if you look straight down from the philippines around about i think four thousand kilometers straight down we're in the same time zone that's where i am right now yeah okay uh let's start okay thank you elsie um yes good day i'm really excited to be here i hope you are too it's an absolute pleasure to be contributing to our audience community in the philippines so i'd like to thank everyone for joining tonight i know it's late maybe it's even dinner time so hopefully our next hour or so will keep you engaged and feed you with some inventor knowledge now to be honest no these live streams are kind of tricky for training i really prefer to see the faces of the participants so you know i can gauge if you're getting bored or not and i can adjust but look i guess it's good as well in case you fall asleep with what i'm showing you i won't see it so i won't feel too bad but um anyway look today we'll be learning about multi-body modeling in autodesk inventor now before i kick off let me just share my screen okay great okay so today we're going to be looking at as i mentioned multi-bodily modeling in inventor and we're going to go through several different parts of this now at each stage we're going to open it up for some q a where you can actually type in your questions in the comments window but first what is multi-body modeling so it's a technique inside autodesk inventor where when you use the top-down design methodology um you might be familiar with top-down design methodology where you start off with whole thing and then you break it down into smaller parts so we're starting from the top and we're breaking it down to smaller components so inside autodesk inventor that tool is called multi-bodily modeling and it allows us to control basically an entire design an entire assembly by a single part file now usually we use this kind of method when you are creating um assemblies that are static in nature for example welded components um things that are going to be bolted together that's how you would use multi-body modeling but you can also use this actually for any kind of assembly right even if you've got motion assemblies that are going to be in motion that's fine there's just additional steps you'll have to do later on now for tonight our learning objectives are really first we want to understand what the benefits and the pitfalls of using a multi-body part modeling method are then we're going to see how sketches are used to create multiple solid bodies we're going to have uh learn how to add and remove features to those solid bodies we're going to learn how to manipulate solid bodies in a part environment and we're also going to learn how to control these properties of solid bodies again all in the part environment but at the end of the evening we're going to have actually look at creating assemblies for a multi-body part file now this is really important because when you actually manufacture things you're actually going to be referring to an assembly because you want to have a complete bill of materials which shows you each individual component for your assembly so multi-body modeling as i mentioned earlier it's a top-down design technique and it's where a single part file represents an entire assembly now we will usually use multi-bodily modeling for designs that have components that have close relationships to one another so if you're designing things that have to fit together really well then that's when that's an opportunity to use multi-body modeling now another opportunity even if it's just a single part file that you're actually making like a very complex part then you can also use multi-bodily modeling for those parts that have very intricate features now if we look at the pros and cons let's look at the positive side of this first so with a multi-body model you're able to flex or make changes to the entire assembly just by using a single part file and because of this there is very minimal use of constraints that you have to use in the assembly environment and so you can make subsequent edits to the individual part files also well without having to affect the main part itself which means that if you need to add additional features to just that one component you can still do that without having to impact the entire thing now on the downside when you're using multi-body modeling you have to carefully consider using and reusing especially mirroring parts together and you will see that later on in our example now there's also a need to set the material properties at an assembly level not at the part level at an assembly level and there's also a technique that we can use to do that but unfortunately at this point any materials that you assign at the part level they don't flow through to the assembly level so let's have a look at what we're actually going to be doing tonight so let me just collapse this so first we're going to be building the part then we're going to create an assembly and then if we have time we're going to create the drawings now this is a bit less important creating drawings because look if you're an inventor user you would have created drawings already in the past so this is quite easy so when we talk about building a part the first thing we're going to do is we're going to create a sketch for the base now on the live on the comments section i think nelson you're going to put that through this is what we're actually going to be building tonight so this is a motor mounting bracket and it actually consists of one two three four components right so this is what we're gonna be building tonight and in fact if i go on to my inventor screen so this is my assembly for this particular component as you can see i've got multiple parts in there i've got this brace here that's screwed in to the sides and i've got a dowel pin at the bottom to locate this one correctly so this is what we're going to do now you may have noticed if you're an inventor user this is actually an assembly right and it has all of the components inside my model in the assembly environment but this all of this actually came from a single part file which i'm showing you here now so for tonight what we're going to be doing is we are going to focus on creating this part file and then from this part file we are then going to be able to create the entire assembly so if you again if you have a look at that particular link i'm hoping you can click on that and we're going to start off creating something like this as i mentioned the first thing that we need to do is we need to create a sketch for the base so the base in this particular example this is the base that we're going to be creating here this base tonight so let's have a start as an inventor user you would know that to start a new part let me bring that over here we're going to start from the default templates of inventor and please make sure you that you use a metric template right we're going to be using a millimeter all the dimensions here in in our example are in millimeters so please make sure you're using from the default templates location or if you even if you have your custom templates that's fine as long as you are using a metric one but the default one comes from templates english us and under the metric folder over here so i'm just going to start off by creating a standard a single part and click create so you're familiar with this this is our inventor environment here let me just bring up the dimensions over here on my other screen so as i mentioned earlier the first thing that we're going to be creating is this base component here so i hope that you can actually see this as well inside inventor because um on at least on your screen because you'll be able to manipulate this particular component you'll be able to orbit and pan this so that you can actually look at those dimensions so let's have a look at this bit closer right so basically this base is 90 by 80 with a thickness of 8 mils now my favorite part of using inventor is actually you have this option to create a box now by default this primitives area is hidden inside inventor so what i usually like to do is way over here on the right hand side of the screen you have this fly out and you have their primitives you want to give that a tick mark over here so primitives basically are the very basic shapes you have for box cylinder and sphere now if you have a look here essentially our base is essentially a box it's a very flat box but it we can start off with a box so let's click on box and one of the things i really like and okay so we start off let's say let's put it on our xz plane now one of the things i really like about using the primitives is that it automatically calls up my favorite rectangle tool now my favorite rectangle tool is what we call the center point rectangle so i'm going to click on the center point and just drag that out and i can then create a rectangle by defining its length and its height quite easily so we know that this is 90. i just press tab let me zoom out a bit and that's 80 90 by 80 and then press enter and then automatically it'll ask me and it'll extrude it so it's say we want an 8 mil extrusion for our base okay now there's just one thing from the default that i'm going to change oh very slightly and i'm just going to change the direction or the um the orientation of the extrusion i want it to flip down rather than up okay it's up to you it's just my preference but i can flip it down over here and then click ok now i have my very first part now you may have been using inventor for quite some time and you may have noticed this already but every time you create a part or a feature inside inventor the very first feature is called your base feature and what that does it creates a solid body one solid body inside your inventor model okay so let me just zoom out a bit so i now have my base feature there now the next thing that we need to do according to our steps here is we've okay so we've created a sketch for the base we've now extruded the base now we're going to create the sketch for the mount right so the mount itself um bear with me for a second let me just see if i can get this uh viewer working correctly i'm hoping you're seeing this viewer correctly okay it's just loading on my side there we go so um on this area here as we can see this area here this component here this is our mount this is where the more if you can imagine a motor you know let's say you're using a stepper motor or even a servo motor you have a hole for that motor and you've got mounting holes for that now this motor mount if we have a look at the overall dimensions it's 90 millimeters by 108 millimeters so again it's a rectangle 90 by 108 so let's go back to inventor and let's now create that mount so i'm going to start off by creating a 2d sketch and as you know inventor will always ask you where you want your sketch plane to be at now what we're going to do now is we're going to choose go over here and look at my origin and expand my origin folder here on the screen and if you hover over these origin folders or origin features you're going to see that this on your graphic window it actually highlights the plane that you need to look at so i'm going to click in my case the xy plane now let's be very careful here because what we want is we want to draw it along the x y plane because we want it along the 90 millimeter range so if i'm just going to right click here on my extrusion and go show dimensions so again what i did was right click on extrusion and go show dimensions and that will show me that this is the side of my base that is 90 millimeters long right so therefore i want to actually create my sketch on the x y plane like that along the 90 millimeter length okay now as you know inside inventor we can actually use the rectangle command and just create a rectangle now as i zoom in you'll notice i'm acquiring you see that green dot that means i'm acquiring that particular corner so it's constrained to that corner and i'm just going to expand and just draw it out very roughly okay and now i can start putting in my dimensions using my dimension command so i click on dimension i click on this i click and we know from our example here that this is 90 millimeters so i'm gonna type in here nine zero and press enter and we know from here as well that the height is actually 108 millimeters so we're going to dimension this so that this is 108 millimeters and then i click finish the sketch so i now have my outline of my motor mount what i need to do now is go to my extrude command over here and extrude that a certain thickness right so i'm going to extrude this by eight millimeters as well now one of the tips that i can always give you is always remember to keep your part as much as possible symmetrical so if you remember we started this off the x y plane so to keep it symmetrical let's use the symmetric extrusion feature it's basically making sure that our particular component is exactly in the middle of our base as you can see here now here is the part in multi-body modeling that is really really important let's keep in mind we've if you're an inventor user you've done this in the past you've done extrusions in the past that's easy you have probably used this option here for join and what join means is that this new feature we're adding on is joined to that previous extrusion so we're joining it to the base and what happens there if we choose the join feature is that inventor will consider this two features as one solid body now our topic tonight is multi-body modeling so what we want to make sure is that we are actually doing this as a separate solid body and to do that i'm just going to move my mouse to the right over here and you can click and see that that tells me that this is creating a new solid with our new solid i can click ok and that's basically create a second solid body so if we look at our model browser you look at solid one which is our base and we look at solid two which is our mount and it's at this point where we're actually we've actually created now a multi-body model right we've got two solid bodies in one single part file and don't forget to save let's just save this i'm gonna save this in let's say mb model 001 yes please don't forget to save you don't want to get too far into your modeling and then all of a sudden something goes wrong and you lose it so don't forget to save so another feature of multi-body modeling is that you'll notice that the icon on the model browser is actually now a slightly different icon it shows you two cubes and that tells you that this part file is a multi-body part file now another thing that we can do is that we can actually name our solid bodies so i can say that if i do a slow double click what i like calling a slow double click which means click on it once wait a bit and click click on it again that means that i can then rename this to let's say solid1 i want that to be i'll call that my base press enter so i'm just naming my solid bodies and i'm going to name this again do a slow double click which means click once wait a second and then click again and then i'm going to say that this is my mount so these are the two main things that we're creating right now we already have a multi-body model let's have a look at what we need to create next so we've created a sketch for the mount we've extruded the mount now we're going to create the right hand brace and the right hand brace is this particular component over here it helps keep the motor mount vertical and keeps it stable let's move that over here and let's go back into inventor let me just check if there are any comments um yeah so after this particular group of instructions or set of instructions we're going to just uh pause for a while to see if there are any comments or any questions going through the chat okay so nothing yet okay so what we're gonna do now is we're going to again create that motor or sorry that brace over here and i can see here from my model annotations that this brace is essentially 50 mils by 35 mils right and you'll notice that's actually just an 18 mil chamfer so i can easily create a 50 ml by 35 mil rectangle that represents this particular brace and just add chamfers later on so i'm gonna now go into inventor and start a 2d sketch and i'm going to use this face over here as my basis for that 2d sketch okay i'm going to use the project geometry command to bring some geometry in so i'm just going to use this one as my base you notice when you project the geometry it turns yellow and then let's just use our normal rectangle by the way if you wanted to use that two-point center rectangle it's just dropping down this rectangle fly out here and go to point center now in this case we're not going to use a two-point center it's not going to be helpful for us we're just going to use a two point so i'm going to click on this base here as my anchoring point and i'm going to click over here and i've actually forgotten what dimensions we need it's again 50 by 35. so it's 50 by 35. so let me go back here and let me just dimension this this is 35 and this is 50. easy now the only problem is we're actually not fully constrained yet as you can see here one dimension needed and that's because we haven't positioned this brace correctly yet so what i'm going to do is we're going to use one of my favorite techniques now as you know you could always use a geometric constraint to add a dimension from here to here but what i'm going to do is i'm going to add what's called a geometric constraint which says that this constraint here this vertical constraint i'm going to click on that look for that midpoint of this line here and then look for this midpoint over here and that now makes a constraint that makes sure that the midpoint of this rectangle is always vertically aligned to the midpoint of this base here if i click finish sketch and again if i look at my model i can see that this is actually just six millimeters thick so let me move that here and i'm noticing that my screen is going a bit dark let me just change this a bit okay i hope that's about a lot clearer for everyone okay so that now is six millimeters thick so i'm going to extrude this particular component by six millimeters and i'm going to click ok right so we've now noticed that when i created that it defaulted to new solid that's what we want we want it to be a new solid okay if in case you made a mistake and you actually had this as a join see what happens okay what happens is that that join is actually this extrusion is actually joined to this solid here it's still part of our base right so you can still go back and double click on this on your extrusion and change it to go mu solid so that we're telling inventor i want this to become a not another solid body so again i'm just going to name this and this is a good practice if you want to always name your solids it's particularly the significant solids in your model right so so far we've created three plates that's quite easy let's have a look at our next step so [Music] um oh actually what we still need to do is we need to add those chamfers right so as we see here let's go back here as you see here it's actually pointing to an 18 mil by 45 chamfer for that so let's just move that over there and inside inventor we have the chamfer command click on chamfer i'm going to click on this edge and i'm going to click on this edge and i'm going to say that i want this to be 18 millimeters and then click ok what so it's starting to look like our particular model here and if you look at the right hand brace you'll notice inventor was smart enough to actually know that that chamfer was applied to this solid and in fact if i expand my right hand brace you'll see that that right hand brace solid this consists of an extrusion and a chamfer and speaking of chamfers i actually forgot to put in the chamfer for our mount so let's add a 12 mil by 45 degree chamfer for our mount here and we can easily do that by going to chamfer again clicking on this edge clicking on this edge and we're saying that we want this to be 12 millimeters and click ok so now i've got my motor mod it's starting to look very much the same as what we have in our in our example here let me just drag that away again so next thing that we need to do is after creating the right hand brace we're being asked to pattern a brace now this becomes very interesting now so let's minimize this let's have a look now at patterning this particular component so i'm going to use the pattern command the rectangular pattern command that's over here click on this and i'm now going to be asked with a rectangular pattern command by default it'll actually choose to pattern individual features but in this case we're not patterning features we're patterning solids so what we need to choose is this one here to pattern the solids and it's going to ask us what solid we want to pattern so i'm just going to click on this particular solid here and that's now selected the solid that we want to pattern now i'm going to click on direction and i'm gonna just highlight this edge here to indicate that that's the direction you'll notice it's gone the other way right it's gone the previous showing us the other way there's a two um two pattern component and there's 10 millimeters excuse me spacing between that now what we can do is we can click on this one here to flip the direction but the distance is not exactly correct we want this preview to be over here on this side so what we can do here is we can have a guesstimate for example i can say it's 90 ml right and that was actually close enough right because it's 90 this plate is 90 mils in width and it's 590 mils and if you can guess obviously we need to add six mils for the thickness of the actual brace and that's correct now here's where some modeling techniques and some smarts come in very handy because fine it's 96 millimeters in total distance that works fine for this particular iteration but remember when you're actually designing things things will change right you oh you know there's going to be changes to how your model reacts or if you want to let's say put in a bigger motor you don't want to go around and messing around with your dimensions again so it's really important to keep in mind the design intent we call it the design intent when you're actually modeling something so you're not just creating something uh you know so that it looks nice you want it to actually contain the intelligence the intent that you're creating that particular assembly for so the way to do that modeling intelligence is i'm gonna say that okay i'm not gonna manually enter in the figure i'm gonna fly out click on this fly out and choose select feature dimension so i'm gonna click on this one here select feature dimension again to get there i just fly out click on this fly out and go select feature dimension and then i click on this feature here and what this will do if i click on this feature here what this will do is that it will expose the dimensions i've used to create that particular feature so then i can now click 90 right and that now actually enters that parameter so in case in the future if i want to change the width of my motor mount if i change this i know that this distance will follow this pattern will follow okay now obviously that's not enough 90 is not enough so we have to click on plus on the keyboard and again do our select feature dimension and if i again click on this one here now to expose this particular dimension which is the six mil dimension and now my pattern is correct now have a look at this now i'm going to click on ok notice that by default it's a join feature right if i'm going to click ok now look what happens so this brace itself is actually two components right separated by the bracket which in reality that's not what we want we want a right hand brace we want a left hand brace so the way we would fix that is this rectangular pattern that we've used let's right click on that and let's edit the feature again right click on the rectangular pattern and go edit feature and instead of choosing join we need to choose create new body when we choose create new body watch what happens click ok now i have a separate solid body for my left hand brace and i can click on that and i'll say that this is my left hand brace so it's now looking a lot closer to what we had earlier in our example here let's click on go here so what's our next step let's have a look so after creating the brace we've patterned the brace now we create the motor mount holes so let's create the motor mount holes now from what we can see here the motor mount holes they're basically 45 it's a big hole it's a 64 mil um diameter hole it's 45 the center is 45 millimeters from the edge and 44 millimeters from the top so let's just move that over here and let's create a sketch of this face create sketch and i'm just going to create a simple circle i'm just going to make this a 64 mil circle and again dimension it from the edge of the plate to this one here now here's another dilemma that you're going to have face imagine if i say that this is 45 millimeters right what happens if for example i increase the width of my base what will happen there obviously because this is now constrained to be 45 millimeters then this is going to have the effect of just always going to be 45 millimeters away from this edge so technically speaking that's not what we want again let's have a look at the design intent looking at the design intent here we can assume that this is always going to be centered it makes sense that this is going to be centered so what we can do is we can project geometry again and project this top edge and again my favorite tool my friend the geometric constraint in particular mr vertical constraint i click on that i find the midpoint of that projected line and find the center point and now as long as my excuse me as long as my base increases or even if my base increases in width this will always be centered now here's another tip okay you might want to actually consider constraining it here to the bottom the reason for that is what happens if you delete this chamfer or if you make the chamfer uneven it might then skew the location of your base right so this is again another consideration that you need to make when you are trying to make your motor mount whole or when you're designing something think ahead think for example what happens if they change this or they change that how will my model react okay anyway so let's just have a look another constraint here from the top and i'm happy to constrain this from the top because i always wanted that it's 44 millimeters from the top and i click finish the sketch and i extrude this again very similar to what we do inside inventor i extrude this and now have a look at this now i don't want obviously a new solid i actually want this to be a cut because i want to cut through this particular solid and i want this distance to always be through wall right now because it's the only solid we've created it's automatically selected and it knows that i'm cutting through this solid here the one that's highlighted in yellow so i click ok and now i have got my motor mount hole now we need those screw holes so let me go back and actually i'm going to create a go back to my sketch four and i'm going to just create a point and i'm going to place that somewhere over here and again i'm going to use my favorite constraint my vertical constraint to constrain that i'm going to constrain that center point that center point marker to the center point of my circle so it's always there right so i'm actually creating this circle here now it tells me based on the instructions here it's four holes 6.6 in diameter going through all the way and it's got a pitch circle diameter of 76 millimeters right so what i need to do now is dimension this from here to here drag it all the way to the right and of course i can type in 76 i can say what's 76 divided by two i can work it out in my head but hey let's just use inventor to do that so 76 over two and inventor will calculate that for us and go 38. so now i've got that point i'm going to go finish sketch and i want to now create a hole there now you're wondering where did that point go as you can see the sketch once it's been consumed it becomes hidden so what i can do is i can just click on this sketch and then drag it up here and that makes the sketch what we call sharing the sketch right and that makes that sketch available to be used by another feature so in this case i'm going to use the whole command so i'm going to click on hold and it's automatically detected that center point and this is one of the really nice things about inventor that i like especially the whole feature now for example um we're mounting a particular component here mounting a motor and we look at the the spec sheet of that motor and we saw that the tapped holes on the face of the motor is a six mil m6 right it's an m6 tap so instead of actually just creating an m6 hole here because obviously we're going to screw something in here inside inventor it's got a feature called the clearance hole and with a clearance hole feature i get to choose a standard so let's say i'm going to choose an iso standard i'm going to it's going to ask me what kind of head are you going to put in here i'm going to say i'm going to put a socket head cap screw and the size of that is going to be m6 now based on this it's automatically going to determine that the clearance hole size is 6.6 millimeters and again we want it to go through all right so it's a 6.6 millimeter clearance hole really really neat tool inventor before this came along an inventor what we had to do is that you'd have to open up your machinery's handbook and if you wanted an m6 hole you'd have to look up the table what's the clearance hole size for an m6 hole now it's all built into inventor so anyway now i've got that m6 hole i'm going to click ok and i now have that m6 hole there it's gone all the way through that's great now i can now right click on my sketch here and go turn off the visibility of that sketch right and i'm gonna hit save now don't forget to save now this looks a bit lacking because we still have four holes that we need to make so we're going to use the circular pattern command here so i'm going to use a circular pattern i'm going to choose this circle here and i'm going to choose a rotation axis of this one here and i'm saying going to say i just want four of those right now to be honest it because we are actually creating holes within a solid we are actually doing it we're patterning the feature remember these holes are not solids right these holes are cut away into our mount solid so i'm just going to click ok and that's basically created my holes now right so i hope you've been able to follow so far so to summarize we've actually created a base component we've created a mount component we've created a right hand brace a left hand brace right and let's have a look at what our next step will be ah the slots so we've got slots here at the bottom right so the slots are five mil radius slots and it's a 14 mil slot uh slot length so let's create that inside inventor now so let's create a sketch again create a sketch on this face here now another great feature of the rectangle tool there's a lot of hidden features of the rectangle tool if you drop this down you have what's called the slot commands right and very convenient way to make slots so i'm gonna choose the slot command over here okay and then i'm gonna just draw one point here to one point here and expand it and we said it's a radius five so this is going to be ten okay and then the slot width or the slot length is 14 mil center to center so i'm going to dimension this one here to be 14 mils and if you have a look it's 15 mils from the edge from this edge here and 10 mils from this edge here so let's click on this and this this is supposed to be 15 mils and this and this this is going to be 10 millimeters okay so that's our slot let's finish the sketch and let's extrude that slot okay so again we're cutting into a solid here and we want to make sure that we're cutting through all and we click ok so we've got now our slot there now what we need to do after creating the slot is we need to pattern the slot now i use the word pattern but actually what you can do here right is you can actually use the mirror command here so if i click on mirror and i click on this particular feature and i'm going to choose a mirror plane i'm going to mirror it along my y z so if you have a look here that's my y that's my z so that's my y z plane i'm going to choose the y z plane here in fact excuse me what i find handy is actually hovering it over here in the origin features that way i can see it highlight on the screen and making sure i'm choosing the correct one so i'm going to choose yz and you notice that i've got a preview now that slot i'm happy with that i click ok now that slot actually goes in both sides so let's do another mirror by clicking on the mirror command again you can actually mirror a mirror so let's choose mirror here and then choose the mirror plane again the mirror plane would be my yx let's have a look it's my x y and we'll see the preview there and we click ok so now you'll see that we've got essentially our complete brace our complete motor mount right ah what i forgot to show you was actually there are dowel holes here at the bottom now these dowel holes right they go from the base plate they actually cut into excuse me let me show you um is it the x plane nope it's not the x plane uh section it's the y plane nope it's not the y plane section let's do the z plane you'll notice that these dowels these dowel holes they actually cut through the base and the mount okay so let's have a look at how that's done so these dowel holes are basically uh two six mil dowel holes 22 millimeters deep right and they are 50 millimeters apart so let's go back to inventor let's create a sketch here at the bottom you notice i'm using two methods of creating the sketch my favorite method really is clicking on a face and clicking on this new sketch create sketch button and again i'm just going to create two points one here and one here and again i'm going to use my favorite constraint or one of my favorite constraints which is the horizontal constraint which means that this point is always going to be on the same horizontal axis as this point right so if i move this those two are always a pair and i can actually add another one to say that this point is horizontally constrained to this center line here right now i know that the distance between those two is what 50 millimeters always going to be 50 regardless of the size of the plate and i always want this to be centered so here's another one this is like there's many ways to do this but this is another way so if i dimension from here to here and click on that i can say that i wanted that distance divided by two so then that makes automatically computes it as 25 mils so i go finish sketch right now i can use my whole command again now in this case i'm not going to use a clearance hole i want to use a simple hole command and i want this to be six mils and i want this to be 22 mils in depth okay now have a look at what happens here okay it's going through all the way now like our previous shows that it's going all the way i click okay let's have a look at what happens i can actually hide this in fact you'll see hey that hole actually didn't go through let's actually hide our base we can right click here and go visibility those holes didn't go through here and the reason for that i'm going to turn on this visibility again the reason for that is because when i chose to create that hole i only chose it to go through one solid so what i need to do is click on this and click on this one so it will actually go through two solids and click ok and if i turn off the base or turn off the visibility you'll notice that it's actually gone through those two solids let's turn that back on how are we doing for time okay we're just three past top of the r let's have a look at our next step we've patted this out we've created dowel holes okay that's great now let's get on to the meat of it now i'm just going to check again the chat window to see if there any questions um whoa okay so there's a question here um can't we mirror the solid through a midplane instead of doing a rectangular pad absolutely yes you can mirror it through a midplane using the rectangular pattern i assume you're talking about the base here though the braces here absolutely that's a good pickup you can also use a mirror to the midplane uh there's a question here what is the use in creating new solids when extruding within question because this is where it will actually come into four next in these next steps that we're going to do and this is when we actually create an entire assembly from this particular model now before i go on to creating assemblies i just wanted to highlight that each of these model sorry each of these solids now okay are individual solids and they have individual features so if i right click on it and go properties okay if i hit update i can actually see the mass the area the volume the center of gravity of just that particular solid now this mass is not correct any guesses why give you a hint i did not set the material of the entire model so i just need to drop this down i'm going to choose in this case mild steel okay let me save that so if i right click on my base and i go properties so you'll notice that now that material that mass property has been updated now another thing that you can do is you can actually save all of these like each of these bodies have an appearance so for example let's say that i want it to be color black for the bass right and that becomes black that's a very unique appearance for black but let me just right click on that and go properties let's just go back to as part now one nice thing about solid bodies as well is that you can actually create view representations for that solid body so with view representations i can right click on the view here right by default it's set to master i can right click on that and i can go new and i can go let's say color coded right and what that means is that when it's color coded i can right click on the base i can go properties and i can change the color of this let's say um there are some color coding mechanisms you want to apply maybe because you want to map this on who is actually fabricating this component you want to see all the yellows go to this fabricator all the blues go to that fabricator and stuff like that you can do that so let's just choose a cadet blue okay for that one and for the mount i'm going to choose a different color because maybe this undergoes a different process altogether so let's choose a bronze color for this one for the braces let's keep it as is now all of these are stored in our color-coded view representations such that if i go back to master it reverts back to the original right so it's not only the um the main view but it's also storing the appearances of each solid body right and it will also i'm going to create another one and i'm going to say mount only or eight mil plates only because we've got two eight mil plates only and i can say that i'm gonna hide the braces because these braces are six mils so i'm going to turn that visibility off and for this view representation i'm only seeing the eight mil plates for this one it's the color coded and but if i want to go back to my original i want to go master let's just save that now okay so what we're doing now is that we've now have our motor mount it's a single part file right what we want to do is we want to turn this into an assembly because we want to get a complete bill of materials so let's have a look at doing that and the way to do that is by going to the manage tab and if you look at the manage tab you go to the make components area click on make components it's now asking me for a file name i'm just going to go skip for now what it's asking me now to do is what do i want to make components for i'm going to choose if i expand my solid body i'm going to choose my base my mount my right hand brace my left hand brace i want to put it into the assembly file called mvm001 my template that i'm using is again my metric template for my standard millimeter template and i want to save it in a specific location let me just save it into a specific location so because i'm creating a new target assembly i'm going to click yes let me just skip this and yep i'm going to save it there in this particular folder so these four solid bodies now that i've selected i'm going to click next and what you'll see is that it's actually going to create four different ipt files for that single or for each and every solid body i created right and it takes the name of that particular amount of that particular um solid body now in this case it appended and underscore number underscore number that's because i have these already saved in that particular folder from from a previous exercise but i'm just going to click ok and what you'll notice now is that it's actually gone in and actually created an ace an assembly file right with all of those components a single part files and all of those single components are now grounded okay let me just save this now where were we okay we actually should have gone back so that i can actually show you when we create the assembly we are now using the make components command that's what we just did we just went to the make components command so what we've done is that we've made components we've made an assembly and we've made those four different components to the assembly now you as with the question earlier what's the use of doing this now this is really a way for us to be able to change the size quite easily so imagine you needed to adjust the size of this base maybe because you had a new motor or you needed to reposition that motor now if these were individual part files you would have to go into each part file and start adjusting things with a multi-body model all we need to do is go back to our original single body file or multi-body part file let's go back to extrusion one let's say that okay i actually want my base i want my base to become wider i'm going to make it 120 mils and go finish the sketch okay so that did not follow this is a great example here so let's have a look here at our sketch too what happened here was that if you remember i put this as 90 mils what i should have done was actually constrain it in fact let's go back let's go back a step okay let's go back to sketch two let's delete this and let's make sure that this width actually follows the width of the plate so i'm just gonna again project my geometry and i'm going to make sure that that corner point there i'm going to use this coincident constraint i'm going to make sure that this corner point here is coincident to that projected geometry there so i'm going to finish the sketch now aha yep that's fine let me just fix this pattern again direction one yep that should be okay now did it go the other way yes it did let me just fix this direction here okay so now if i flex my model and i say i want this to be 120 i finish the sketch there we go it's become 120 mils now right and let's say the height i want it to actually be a bit wider taller so the motor amount here instead of being 108 i want this to say be 120 as well finish the sketch and that's adjusted that particular component so i've adjusted a lot of things or basically just two parameters at this point i've adjusted it purely in the part file right but if i have a look at the model file the assembly file that this is linked to if i hit update here it will actually now update this assembly file for your particular assembly now this color is not really flattering let's just uh let me choose a different view style let me turn on shadows there so that's a bit easier on the eyes so as you can see i've got four different part files now what i want to do is i want to adjust the bill of materials now as i mentioned earlier one of the downsides to using multi-body modeling is that it does not flow through the material property does not flow through to each and every part so let's go on to the assemble tab and let's go to bill of materials let me bring that over here now in my bill of materials i've got those four components i'm going to choose another property and i'm going to click on choose columns and this is my favorite way of assigning materials just drag the material column here and i'm just gonna double click on the first one and i'm gonna say okay i want this to be mild steel okay and just drag and drop or drag down very much like excel now everything is mild steel so that let me save that so that is one of the main reasons we would want to use a multi-body model is so that we can control a whole bunch of parameters of our part for of our assembly just with a single part file this can get a lot more complicated you know you can design shoot work you can design some conveyor mechanisms all within one part file and then have all those changes controlled by a single part file instead of having to go to an assembly and make changes to each and every component of that assembly now another advantage of this is for example when you're fabricating this particular component because now this is a base i can right click on that i'm going to go open it's its own part file and because it's its own part file i can right click on that and i can create a drawing view for that particular part file and i can choose i've got my my drawing views here i'm going to choose drawing view i'm going to use my own template and basically now i can have a drawing view just for that particular part file bring that there so that is basically my model there it's got a part file and i can dimension that and create a single drawing for that part file okay let's just have a look to make sure i've covered everything so far okay oh yep we've changed the materials um just having a look at the time uh okay i think we can make some um let's create the instead of doing the screws that's great let's go and skip that for now oh actually not let's not let's actually work on this let's just do one side though now this is another nice thing about having separate part files is because now if i needed to create holes here i can actually double click on this just have a look at that view there and i can create a sketch click on that face click on some points here just create again i'm doing this more or less freehand now and then i can start dimensioning so i'll say that that's six mils from there this is uh 14 mils right again we want this to be centered so i'm going to use my vertical constraint from here to here and from here to here so they're all on that same vertical axis now the same case here i want to dimension this one to here and let's just call this six mils or sorry uh four mils right and i want this to become horizontally constrained so that the on the same axis they're always formulas from the bottom and i just want to add a constraint here and make that equal there okay now in the interest of time because we're about 20 30 minutes past eight have a look at that i've hard coded this or hard dimension this to four mils so be wary of that because what happens is what happens if my plate thickness increases therefore this will no longer be valid so what you want to do again is actually do a project geometry so that you're actually grabbing the center of that part but anyway that's fine for now okay click return so i've got those mounting holes here now you may have used this command before and i love this command inside inventor called bolted connections so inside the vaulted connection i basically now am able to choose a blind hole and yep it's on point this is my start plane over here and my point is this one and my blind start plane is this one over here now it's automatically detected all those four points as you can see and what i love about this is that i can say that okay it's actually a three mil hole that i want it's selecting the correct clearance holes one is a normal 3.4 mil hole for the clearance hole another one is a threaded three mil and i can actually add a fastener so let me click on that and i can say i want to add a countersunk bolt i want a broached head and you'll notice that it automatically changes this to a countersunk and let me just move that to i1 m3 by 12 let's say and then i click ok so it's not generated those holes it's now created those components and let me just go back to my brace let me turn off that sketch so that it's a lot nicer to see so saving so now i have that particular hole and what this has done is that although we've made a modification remember we've made a modification just to our right hand brace it does not exist in the part file here right so my advice is that whenever you're starting to do the vaulted connection stuff then you do that at the assembly level right now you're free to use this part let's say you can copy this to another model or you can create another assembly out of this template so you can consider this master body as a template for one kind of motor mount copy that chain make change to dimensions make another assembly for a different kind of motor mount so now i've got that base where am i sorry there we go so we can see here for example that i've got my screws let me go back here i'm going to go to my bill of materials right i've got my purchased item there i can have a look at all of these components now they're all the correct components so let's insert some dowel pins over here so again this is a very um i guess basic assembly modeling if i go place place from content center i've got a cylindrical pin and i'm going to use the 2338 cylindrical pin i'm going to click ok and i want this to be an m6 h8 tolerance and it's just let's say at 20 mil click ok let me just place two components and again i could have used auto drop in fact i should have used auto drop but let me just constrain this manually then constrain that constrain that okay so we've got our model here and from this particular model we can actually right click and we're actually going back to creating the drawings now and it's simple again it's a quite a simple operation if you've used assemblies before and drawings before right click on the assembly go create drawing view choose your template let me increase the size of this a bit and let's just make it shaded oops i actually turned off the shading okay and i'm going to go annotate tab i'm going to go parts list click on that one click ok so yeah the bom view is not yet the structured bomb view is not yet enabled so it'll enable this for us and i now have my bill of materials over here with the correct quantities with the correct number of balls now obviously we in the interest of time we didn't create this pattern this bolted connection for the other side you'd want to do that as well so that essentially is our main um reason for using multi-body models is so that with a single part file we can control we can create an assembly file and we can control that assembly just using a single part file we can control the dimensions of that um let me just have a look at the questions to see if there any questions no i'm really wanting to leave time for q a at the at the end so uh let me just have a look again any questions forgive me there's a lot of comments coming in through the feed um okay yeah that bottom pin hole uh you'll have to create again a dimension here at the bottom so the dimensions are it's a 50 mil hole and i think what you were after in particular was when you when we created that hole for the for the bottom pin right by default it will only choose one solid right what we need to do is we need to choose this solid and this solid so that the hole goes through those two solids over there now there's a question here in creating holes with shaft screws bolts a bushing of 16 mil diameter and a shaft 15 95 mil in diameter for example is it possible to do it in one feature command considering fittings and tolerances um no you wouldn't want to do that really in one feature command i would suggest i would suggest there would still be two features you would still have two features for example for let's take the example of this particular hole here now what i like doing with holes um this particular one now i used a circular cutout here you could also use a whole command i usually use the whole command for fasteners but for example this was a shaft hole what i would do here is this dimension double click on this use the flyout and choose the tolerance command here and now that tolerance value allows you to specify your limits right so for example if i want a tolerance with a h7 which means it's larger by 0.03 and there's no lower limit to it for the whole i click ok so what will happen here okay so it applies a tolerance to that particular hole and what happens there is let me show you if we use the measure command inside inventor and measure that yep that's 64 mils easy if we go to the parameters over here on top and we have a look at that hole that is this one here the 64 mil hole here we can say we want to evaluate this at the upper limit of the tolerance which is the plus one here and i update my model in fact it's automatically updated because it's immediate update i click done if i measure this now that's now 64.03 so if you're doing any interference checking inside inventor this is how you do it you could now adjust on a per feature basis what the tolerance of that feature is based on its parameters i hope that answers your question um yeah so yeah it's splitting both bodies yeah that that'll definitely work uh so jamie also had a question in creating separate drawings of each part is it possible to show them in an angle view not related or aligned with the angle view of the whole multi-body modeling for easy understanding during tooling i'm not quite sure if i understand your question but let me take a stab at it um one like our model here is quite simple because we don't have any angled components here now if you had something of a weird angle for example because of multi-body modeling that weird angle will always be at an angle to the particular origin part right the origin features so what you would do there let's take the example where am i let's take the example of our right hand brace and let's have a look let me just turn this off i really like turning off the visibility of my sketches because i like seeing the model as is let's create a drawing view for that now obviously this one was quite straightforward right because we are actually just looking at that particular part it's it's very it's still on the orthographic planes right if for example just say for example this was at an angle there's several ways i can do this first way is that i would actually right click and go edit view oh sorry not edit view right click and go rotate right click on the view and go rotate and i can say that i want an edge to be horizontal so i don't even need to know what angle this is i just want to say okay i want this edge to be horizontal and then it follows that particular orientation for me okay so that's one way you could actually do that another way you could actually do that is if um let me just undo that is and this is for especially for i think it's 2020 that they introduced this the view cube you can use the view cube if you right click and go custom view orientation you can use the view cube especially this button here called the look at this is really great for orienting your model so let's just say it's this angle here i want that to be the view i'm going to be taking i right click and finish custom view that's the view that it's going to be taking right i hope that helps okay so kevin a really interesting feature in our case rather than using frame generator i can use sketches for all the different parts and extrude them later yep that's right um look that's actually a great point kevin uh but i wouldn't really say that it's part of or i would use this to replace frame generator i know there are some complexities when using frame generator but overall because it gives you the standard components the standard members that you've got and it's got the ability to do end treatments for you automatically i would strictly suggest using frame generator for this now for all of the other components inside inside your assembly then possibly use multi-body modeling but i would not really use this to replace frame generator all right i think uh yep we're at half past eight and yeah is there any other questions i'm happy to entertain them now brian do you have questions uh good evening poster sir carlos uh i would like to ask a gen general question uh not not mostly about inventor sure my question is what is your opinion that most graduates of mechanical engineers here in the philippines are very unfamiliar unfamiliar with the autodesk programs like inventor um okay that's that's interesting right so look to be perfectly honest i am an autodesk and better user but um when i was teaching at university i also thought solidworks right so i think what's really important is that each and every professional you get an understanding of the fundamentals of 3d modeling because once you have that fundamentals of 3d modeling you can use that for any 3d application right i've seen some previous webcasts that were actually talking about let me stop sharing my screen that we're actually talking about fusion 360 for example although it is an autodesk product there is a different kind of methodology or different tools that you would use inside fusion360 but the fundamentals of actually 3d modeling is still the same so i wouldn't say that okay you know stick to this features or stick to this application stick to this application learn the fundamentals of 3d modeling that's the first thing and learn how to learn quickly that's the most important thing right because you know you might start off at at university you might start off college you know you're using this application when you get to a job you get an indus to a particular job they might be using a totally different application so you have to know how to learn quickly right and i agree with that by understanding the fundamentals of 3d modeling thank you sir thank you sir any choice for uh mouse uh sir carlos [Laughter] um i prefer i'm actually using the 3d connection three-month button mouse i'm i'm really liking this but um i like it because it's very durable for me it has a long charge left it's high resolution i don't know the exact figures but aside from a mouse i mean to be honest i've actually just started using this 3d mouse for about maybe a year or so i love it but what i cannot do without is my 3d mouse over here and my 3d mouse is also it's a 3d connection product this is what allows you to orbit to rotate the zoom with your left hand and my right hand is using the mouse so this is a really really really useful tool to have okay how about you android do you have questions uh hello sir this is from an anonymous user for those individuals who are planning to start in the field in the hardware of 3d modeling what advices can you give for them oh so you're starting the field of 3d modeling okay um i guess the first one is really learn quickly right as i mentioned earlier you have got to know how to learn quickly learn the fundamentals of 3d modeling but also 3d modeling is entering such an exciting stage nowadays right you want to have a look at stuff like artificial intelligence ai right one of the things that uh what we modeled here earlier was just a very simple bracket and we used very fundamental mechanical engineering methodologies to come up with that shape like you have a base you have a vertical mount you don't want that that mod flexing so you add a uh right-handed left-hand brace that's that's almost like uh you know very intuitive from a mechanical engineering perspective now what's really nice is that now you've got tools called generative design look it up generative design and what that allows you to do is that you're gonna basically what you tell the computer okay i want the motor i want this bracket to fit this motor and i want it to be mounted on this plate go ahead and design it for me and the computer through ai is actually the one who's going to find the optimum configuration of the bracket it might not it might look totally different from what you would expect but it's actually going to perform a lot better in terms of strength in terms of materials so generative design is actually i would say one of the hottest things in 3d modeling right now so learn how to do generative design but i will still say by the time you learn generative design there's probably something else new that's going to come out there so going back to the basics learn quickly how about you brian uh sir i have another question uh when you were starting your career as a 3d modeler uh have you undergone a training about autodesk or you're just self-taught um yes i am self thought look i i i started um in the time of autocad and autocad without windows so i don't know if any of you still know what autocad.windows look like it's still a dos based application and the internet oh we didn't have the internet in the philippines back then when i was starting i mean yes we had a little internet it's not there was internet connection but you didn't have the google or youtube to say how do i do this you basically had to actually learn yourself so yes i am self-taught um but there's now that's why i'm saying there's no excuse not to learn quickly now because there's so much content out there yes that you have the ability to learn really quickly and learn a lot of things right so yeah yes i i was self thought but you can also do self teaching yourself especially with a whole bunch of um resources now available online uh yes sir thank you for yeah uh there are many uh informations out there in the internet that teaches us how to use correctly yes that's right now i will say though when you're self-taught you also have to be very open-minded because when you encounter a situation you have profession especially i'm what i hope for you guys is that when you for example start your modeling career you can get mentored by someone who's got a lot more experience in modeling because one of the pitfalls of being self-taught is you can learn bad habits right and so by having a mentor then they can actually advise you to say actually you should have done this because looking forward this is what's going to happen right but by all means i'm not saying don't don't do self learning please continue doing self learning but keep an open mind and hopefully find a mentor that can help you out thank you thank you sir i think someone is asking for a learning resource right okay any good link for learning eye logic ah what am i so eye logic yes um one really good site i would say is going to autodesk university online so you might not be i hope you're aware that autodesk university 2021 is happening i think first or second week of october so that's a free event and practitioners or um practitioners of autodesk software from all over the world present at that conference uh it used to be before covet it used to be always held in las vegas we would all go there we would present uh on our specific specialty and these are real world examples of how autodesk software is used now it's all digital you can um log in online i hope joe mark or nelson you can put in a link here for registering for au online so it's a live event but all of those events are also recorded but even the ones that we did in las vegas they were still recorded a lot of them were recorded so if you go to autodesk university online and google are in in the search put in something like eye logic just ilogic you'll see i'd imagine you see a hundred i know that you'd see at least 10 really good results there and you can learn from there because they will provide you handouts there's a video there's data sets as well so yeah you can learn everything from there ah there we go thank you yeah yep uh i think for the young ones and uh of course most filipinos uh dream about going abroad so any uh suggestions your thoughts on that your journey how you ended up in australia yeah uh look it was an interesting um a journey for myself uh it's basically something for me it was my faith that brought me here it was something that i believe that okay for me to be able to help a lot more people this is this is the road that i wanted to go on on and look whether you go abroad or whether you go you're still in the philippines really because of the internet now you're able to influence or help a global audience so where you are is not as important as how or your reach to other people so yeah by all means look there's a lot of um there's a lot of opportunities out there uh but yeah don't limit yourself to just going abroad there's a lot of stuff that that can happen obviously in the philippines andre brian uh sir just an additional question uh what software would you recommend for those who want to go dive in the world of 3d modelling as in those for those who doesn't know a thing about 3d modelling are there any software's preferable like uh this is one that's more user friendly and one that's harder to learn which which software do you recommend for um because we're an autodesk forum here or this community of course we'll have today no but seriously i i have used a lot of different software in the past non-auto software as well and i can sincerely say that autodesk software is really the best one of the best out there i would say in terms of ease of use in terms of um of features so if we look at 3d modeling for example in the mechanical i'm assuming here we're talking about the mechanical engineering world then you you're basically boiling down to inventor and fusion 360. right uh fusion 360 is probably one of the hottest uh up and coming uh 3d modeling packages out there because it's not just about 3d modeling and fusion 360. like i said generative design has it's inside fusion 360. if you want to go cam machining or even 3d printing there's a lot of modules inside fusion 360 that'll allow you to do that so learning fusion 360 is a really good step um it's because it's not only just the software it's the community around it because as i mentioned earlier you want to learn you want to have resources available to you online you want to have access to mentors that will be able to help you model these things and create these things so uh the rs community for example autodesk university rs community philippines for all these websites the knowledge base youtube sites youtube videos there's a whole lot of content there for autodesk users that you're really spoiled for choice when you want to learn a piece of autodesk software there's just a whole lot of resources and that's why i would say yeah either go inventor or fusion 360. i myself again i mentioned i started with autocad learned with inventor and also now going into fusion 360 myself yep any more questions andre thank you okay any announcements uh miss nelsey hi everyone um [Music] for your certificate of event participation kindly message us in [Music] meetup.com autodesk community philippines so please do message your full name your school name and the title of the training so for example nelson marcellano autodesk community philippines multi-body modeling in inventor okay and then our team will be sending the course id okay and you will input the course id here in education dot autodesk.com okay to those who are uh first timers kindly create an account in education that autodesk autodesk.com okay so log in as a student or training participant make sure that you will input your full name as seen on your government id or school id okay so first uh create an account in education.autodesk.com after you created your account message us in meetup.com to claim your course id okay sir joe mark okay so yep uh once more sir carlos [Laughter] so it's a milestone in linkedin so hoping to help you [Music] also very very honored and happy to know that uh you're also a mechanical engineer you're also from paranyaka mechanical mechanical engineer so yeah so once more thank you so much sir and hoping to meet you in person yeah in real life so once more um we have tons of training okay so head over to uh youtube preferably and meetup.com to be reminded and for you to see our list of upcoming trainings so right tomorrow i think right miss nelson tomorrow we have autodesk maya this time mne so madales casey most of the time because we're engineers here our topic is mainly about aec and manufacturing so uh happy to hear that the mne guys are catching up so once more autodesk maya 3d modelling for beginners tomorrow okay and yep for those who are interested to take the exams you can ask miss nelsey and our continuous mission we're always here so if you would like we are open for free trainings most especially to our dearest students coming over from uh public schools and um state universities and colleges i am so what's more po and thank you so much to all to those to those who uh are with us tonight and we will be forwarding the condensed um version of this live stream for the benefit of those who will be watching the live uh replay so and don't hesitate to message us always in uh anywhere in meetup facebook okay so and thank you everyone and see you next week everyone for the next session next live stream

Channel: Autodesk Community Philippines

Views: 1,954

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Id: rWttf2Mh9HQ

Length: 96min 52sec (5812 seconds)

Published: Fri Sep 24 2021