How To Model a Sprocket in Fusion 360 Tutorial — #LarsLive 110

welcome to livestream number 110 my name is Lars Kristensen and thank you so much for joining today's live stream today we're gonna talk about how to model up a sprocket in fusion 360 should be easy right so oh and then we're gonna cam it tomorrow by the way so let's get going haha alright so inside of the fusion 360 here blank page we gotta go ahead and start out by modeling our kind of out blank you know Carly coming from a manufacturing background and I like to start the same way as a probably would in real life so I'm gonna open up a new sketch select a plane here and I'm going to do a c4 circling and do the outer diameter of my sprocket here so I'm gonna do that 142 millimeters in diameter just like that that's a circle pretty good I'm gonna do another circle in the same sketch because I kinda have a hole right through the center see four circle and sketch another circle through here that is 32 if you're brand new to fusion don't forget that because now when I go ahead and hit Q 4 press pull I kinda like already got that's hole in the center right so there's no really reason if you're brand new there's no really reason to do two to sketches now I'm gonna do this one 14 millimeters thick but I'm exceeding from the back phases let me turn the origin on I'm doing that from that back face right here so I actually I think I'd rather I want to go symmetrical so hit the drop down for direction it goes symmetrical now it's moving to the center but of course fusion gives you two options you can do half length or fool things so I still wanted to be fourteen thick so I'm gonna switch it over to two there so I guess my point is when you're doing your when you're doing your your extreme make sure you're familiar with these menus in here because there's some neat neat things in here right hit OK and we kind of like got our plank with the plane cutting right through the center there for modeling up our sprocket cool should be uh should be pretty close right now we got to do the profile fall up the sprocket and here we need to talk a little bit uh because everybody kind of like used to have known stanzas and how do you figure out how you're gonna make the teeth and this goes also so we're gonna do a sprocket like you have on your bicycle or something but this of course also goes for gears everybody have their own standard you gotta follow it around it can be really difficult but I used was trusted machinist handbook in here in my Edition I don't know what is my Edition the 26th edition if you go to page twenty four thirty eight that's a lot of pages of this one here that's right you get all the different haha sprocket data year data all different kinds of stuff what's out a lot of companies decided to make down standards to so many times this don't work if you don't have a machinist handbook I wouldn't really recommend you should pick one up you can do like I did this one was a property of the majority southern bookstore if you can see then that sticker right there meaning I bought my second hand you really don't need to go out I think these are expensive like maybe a hundred bucks you can get them a lot cheap on eBay that's the tip for today if you're not learning anything else from fusion from a fusion 360 one buy yourself a machinist handbook secondhand Edition is a little bit cheaper now because doing this kind of stuff on the screen could really become boring and you know I've really spent quite a time reading and then I probably started chipping somewhere along the way what I did was I drew up this here I'm not really gonna bore you too much with all this stuff because like I said it really depends on what kind of sprocket you're making tour all different kinds of stuff I always have rounded up the numbers that I got and this one you know if you just got to go out to space and probably wouldn't swear my life on it but what it boosts the handout is a bunch of circle pits diameters some other circles interacting and then in the end it exit becomes kind of like some solid lines and it's like one hour one line and two circles that kind of like makes makes the gear I'm happy to share this this file with you this gets geometry here you can kind of play around with it but again don't sue me rounding the numbers up or anything now how do we get this file with this sketch into this file well if you watched how I was talking about how I modeled the other day you could go out and you could you could go out to your data panel you can see that that big that file is sitting right there you could right-click on it and you could insert it into current design and it will come in here that would be one way to do it and not a bad way at all but I thought now where I had the opportunity why not show you another trick so let me open up the sketch again and I'm literally just gonna highlight the whole thing I'm gonna do a ctrl C on my keyboard go back into our blank here I'm gonna right-click and open a new sketch and do a ctrl B and then you will see that I'm copy pasting that sketch in here now it opens up the move command in here but I'm okay beware it is I'm gonna hit OK you will see though that it's blue it's it's under defined so when I bring the sketch in the sketches I'm gonna find well all I have to do is go up and say coincidence with the origin I'm gonna pick that over in the tree and try to select the part or you know over here one of them and shoot me they're right on top of each other so it kind of depends on what I select and right there it becomes fully defined now it looks like a big a big mess right now but if I go ahead and I do a press poll you will see that I can select just that portion that I need of this sprocket so I'm going to hit okay to that and I kind of get the cut out for the sprocket here now it doesn't really look like much right now but if we go in and we go ahead and use the the patterning for a circular pattern and the defaults of phases I prefer features select that cut with it X is to a circular pattern around this X is here this is a project for 16 teeth you will see that now it starts looking more like a sprocket like you would think so I guess what I want you to take away from this is you need something that defines how this thing's going to look like when you get all that data and you get all the formulas out of whatever you have then you need to draw it up kind of like with those different dimensions and then and and I'm not gonna try here to show that but because again it depends on what you're trying what type of sprocket what type of gear you're trying you're trying to design but you can draw it up here and then like you saw a copy pasted it in and then we we got the sprocket that was easy right well anybody who wants the livestreams know that I don't just talk for eight minutes and plus we got to do this one tomorrow so I thought we might just play around with a little bit more maybe show you a couple of more tricks so what I want to do to this sprocket is I want to kind of like get many times like especially if you're looking again I'm thinking bicycle sprocket a motorcycle whatever you for sometimes they're not flat sometimes they kind of like have a curved curved X to them so I thought that we should do that I thought we should put that in and that made me think of a couple of things as we're modeling up here notice my origin I got the free planes right here and notice how my plane goes right straight up through the center of the the bottom circle here now I want to put on that radius on the outside and actually also do a 80 slot in here so what I actually want to do is I actually want a plane that cuts right through the top of the the tooth here now how do I do that when I have a plane that goes right through the center well if you're familiar with the different options there isn't here one called plane and an angle a construction plane at an angle so I'm going to select that one I'm gonna select that center line here too to rotate it around now anybody know how what the angle is for fold that tooth well you could start measuring it but anybody who better at math and me will probably over to figured out that we could do well my first thought was to say well I know there's 16 teeth so free 60 divided by 16 you can do math right in here right hits enter and look at that and well hope that doesn't work because that actually just moved it over and made it flush with that radius but was the same one the other one has don't forget you can go down and right click Edit feature instead of 16 well why don't we try then half of that a double of that I guess 32 and now we have a play in the cuts right through the teeth they're so simple mad that we could actually create that there okay so we should be good to kind of like put a spline on here put some nice radius on here so I'm gonna start a sketch on that plane so I'm gonna right click and create a sketch and it kind of like makes me normal to here and I'm gonna go ahead and create a couple of helping lines for me to start out so I'm gonna hit alpha line I'm gonna blast the line right through up here vertical and I'm getting in a habit right now to double click what I want to end the line so double left click it gets me right out of the line but keeps the lines real active that's actually something I didn't used to do I used to go out and just left click once and then you get the next line and they know what hit escape well if you just double click when you finish the line then it's all good okay so what we got now is we kind of like got a vertical line up we've got a vertical vertical line across here I want that radius not just down at the center of our sprocket I wanted to start a little bit up so let's do an oval offset select that one line we just created actually I'm not gonna do chain selection on it I'm just gonna do uncheck change selection and I'm only getting the line if I have the chain selection on you will see that it's select both both lines I don't want that it's not what I was after change selection off and I just get that one line I want I'm gonna go up minus 35 millimeters probably good area to start and we're gonna use the spline tool yeah the spline tool should count how many times I use that tool so I'm gonna go down and do the splines will hear our first points gonna be right there that in a section of our 35 and I'm just going to go up here and click up up on this edge up here and place the spline tool there double click and the spline have been been placed now I know that I want some kind of a distance from here to here so let's do D for dimension and place from this endpoint to here and let's make it four millimeters and I actually want to fully define this this spline because I'm always talking about how usual it should do that I'm a big fan of constraining one of the spline handles give it some constraints over here so I'm actually gonna make this spline handle I'm gonna make it vertical so click the vertical here and select the spline handle right here makes that vertical right there and then when I'm looking up here so I would really want to use this spline and handle up here to kind of like it just that radius that I want I can pull in it make it fatter or I can make a little thinner and kind of like I think that is good right there so then I'm not gonna make this one vertical I'm gonna make that a degree so again I can use that help line I had right there let's just round it up 12 and then let's put a length on on this line now I want to show you something look at the dimension here look how the depends on where you're placing your mouse cursor how it's gonna see here how here it is horizontal here it's vertical you getting kind of I go over source the angle see how it kind of like snaps in so we can put that length in there now I probably wouldn't round off the spine hand those two months I'm just gonna hit Enter lat I'm gonna go over and find the spine handle down in the center put a length on that one to hit okay to that now it may be hard to see I hope you can season your screen this spline is actually still blue I'm trying to fool you the finite well notice this I never got a a test in that direction right there that's not good so I'm gonna do a vertical relationship between this end point up here and this line here now I'm gonna talk a little bit about the Purple Line just in a second up here so now you will see this gets fully defined so that's great now I want to cut off this section here and makes it gonna do something that I normally are not a big fan of doing but I'm starting to do it more and more I'm gonna hit alpha line and I'm just gonna create a box here and just close this off here at least make this vertical for my sanity just have a box on the outside - kind of like define the area you want to cut like I said I normally didn't use to do it I kind of like I don't know having these construction lines it seems a little laughs but I do it more and more so maybe I'm just it has no reason you shouldn't do it and I'm not even gonna fully define and because it doesn't really matter at this point I'm gonna hit let's go up and do a revolve of this we talked about them evolve earlier in the week if evolve cut so I'm gonna select that area there I'm gonna select the X's to revolve around and just like that you'll see everything is rad what means cut but a spider-man hit okay and let's take a look at this so then we got like a nice see how it's kinda like it's a nice curve to it now I wanted to do this on purpose um because like I said before I can't just talk for eight minutes no somebody brought this up to me the other day notice what happened right here let's try to zoom in see how I kind of get a step right here why the heck do I get a stab right there well the reason for it is because if we go back to our sketch right click and hit edit sketch when I was drawing up this spline and I let this fly and snap into this edge up here you will see that it automatically if you should automatically projected that that adds because that adds was actually not living that was that adds right there that was actually not living when I snap that spline to this edge fusion was smart enough to say oh you want to project that adds over to the plane you're drawing on so that's why we see the the per ball kind of dots there okay but because this whole thing I remember we started out with a fist profile but I project this this line over to the center of the tooth that's actually a bit of a curve to that edge right there so when that gets straight projected over this is actually a little bit lower than the top surface that is why when I stopped the skies that we get a little an X there and I don't want that it's there so what can we what can we do all right if it seems blurry I just get one here if you get this make sure you click on the gear simple down on your phone or on your device and make sure you have the highest resolution if you still have an issue then it's my internet but it should hopefully work pretty good so I'm gonna so I have this little cut here and we have to step is that that's because I projected this X over to this plane that's not really what I want well one thought and and there might be other ways to solve this but the my solution to this is a little bit I don't know I feel like a little bit like you know duct taping it but it works I'm gonna move back to befall I will revolve so here's our sketch sitting right here let's write the whoops not the alright so in the plane I never take the sketch on so we can see the sketch right what I'm gonna do is it makes it gonna cut remember we created that plane of that angle that is perfect on the center I'm gonna cut my part I'm gonna split body I'll just hold on if you're thinking what the heck is he doing I'm gonna select the body to split I'm gonna use that plane I created to split the body in half I'm gonna put it back together again don't worry now when I split that body in half let's go in here and look at it and and if your screen is blurry then you probably can't see this but now you might be able to see that that line is sitting below the top surface because that line was projected over if you don't see it then I'm sorry but what I can I'm gonna do is I'm gonna select that purple line that was rejected over and then they're gonna delete it out of there I'm just gonna make go into that sketch edit sketch whoops yeah get ahead of myself here actually you know what I'm gonna have to make the break hang on hang on hold your horses I'm gonna have to make this happen be follow the sketch so I'm actually gonna grab that cut and move it behind the sketch whoa somebody right now it's like what did he just do what's the video again does it go back in and out of the sketch because I needed that cut to be zoom in here I don't I'm not trying to make you seasick this might be very hard to see but I need to make a the spline point sitting right there and make it Quinn sidin with the top see how that just moved up there hopefully you did so now I'm gonna stop the sketch okay and I'm gonna roll past the revolve now when I do that notice something interesting my my sprocket just got cut completely off and you're thinking what the heck it's just because that whole split body suddenly appeared and the the revolve never the Raval never saw the split body till now so it gets a little bit confused about what it needs so I'm going to edit that and just select the right profile hit okay there that's better now you will see that I don't have any cuts here because that I now move that line up to the right height okay I hope this makes sense re-watch it again rerun it again reads again but you're saying yeah that's all great lawyers love it but now you got to dig bodies that was a little bit of a hokey way to get that well we can always this Christmas we can always go in and combine them again right so we're just going to select the two bodies and combine them back together again now it's one body now we got that curved over on the top without get that little little step there whoo-hoo so just to kind of like remember we did we actually created a plane in an angle we use that to cut the pot in half so we could get that center line right there and then we sit sit back together again mmm now I want this curved edge on the other side right so what would we do now well let's go back and let's use the mirror command now I like to use features instead of faces so I'm gonna select features I'm gonna select that revolve I'm gonna murder over the center plane and when I do that I'm gonna hit okay oh nothing happens oh why not well just remember what you're trying to do here everything in Fusion is history history based so when I'm now going to select that revolve as a feature and it now has to mirror it over it also got to kind of like deal with that combined I did so when this stuff happens um you know it's easy to say well hey of course it should work but notice if I go back ones go back to when it's still split in half here if I go back now and try to do it going here and do the the mirror select features to select that revolve let's select that center plane hit okay you will now see that it looks good and then if I roll forward again then it gets all stitched up and and it's it's all good so that's you know that's just one of those I guess small tips that you know the I love that Fusion is truly history based like you saw how we move things around down here nothing really can affect each other but just you know be aware of the I guess the calculation is that that's going through here a little bit okay the last thing I want to do to this one is I want to create a kind of like a t-slot going through here so let's go go in here let's just hide that plane there let's not a sketch right-click create a sketch and I'm just gonna create a Nala alpha line and I'm just actually just gonna use that point that now got there so create a line food here oh for offset and let's make this I don't know let's make it a big T it's not here six I'm gonna hit off off so that I can select the other line I'm just gonna go minus six like this let's hit alpha line and create a perpendicular line across there D for dimension place it like this I don't know 25 maybe and let's hit Q for press pull and drag that through there through all hit okay hide my plane my planes for a second my origin so that looks pretty dang good now the last thing I would do to this part is probably at the last fill its so I'll probably add fill is to the inside because you can't make a totally sharp corner maybe make that I don't know one millimetre two millimeters we got a machine at tomorrow's we're gonna have to talk about that tomorrow how big we make it that might be Bialik trouble right there and I would actually probably and a chamfer on the inside right because I probably take a little needle file right here and add a little flat 45 degree chamfer to that and of course also maybe around some of the other areas in them but that is how I would would model up here a sprocket in fusion 360 I hope this was useful I hope I showed you a couple of other tricks in there that you that you could use it became in late I kind of I would I wouldn't say I cheated but I didn't show how to do the data in specifics just because that really depends on what kind of gear what kind of sprocket you want I use this as a reference I rounded up my numbers just to make a little bit easier for myself because this was all this is all inches I will share this file with you if you want it my email address is down in the description area send me an email I make sure that I share you that file if you want to look at it that was Thursday tomorrow we're gonna talk about machining this project but I'm more concerned about showing you like second operations and things like that and then it's Christmas break I was ready for Christmas break next week is Christmas break so we're gonna be up next week I hope this was useful you let me know in the comment area thumbs up if you like it if you don't be honest man thumbs down if you haven't already I would really appreciate if you hit that subscribe button that's what I'm gonna go to my boss with and say hey look how many subscribers I got so that is how is that do what I normally do I'm gonna end the broadcast if you're watching the recording I really really appreciate you taking the time to watch these videos it's awesome and if you ain't a livestream in the chat I'm gonna come by let's say hi to you in there so take care guys hope to see you tomorrow

Channel: Lars Christensen

Views: 33,276

Keywords: Autodesk, Autodesk Fusion 360, Fusion 360, Design, Manufacturing, Tip, Beginner, Lars Christensen, #LarsLive, akn_include, Best Practice, Modeling, Sprocket

Id: UgAlC7JDkqA

Length: 28min 46sec (1726 seconds)

Published: Thu Dec 21 2017