Basic Fusion 360 Model & CAM for the CNC Plasma

in this video you'll be learning how to create this 2d simple flat widget in fusion 360 in both the model and km workspace for the CNC plasma cutter after you have saved your file because that's the first thing you should do in working in fusion you're going to add a new component I'm gonna call this component one for now and then go new sketch be sketching on this bottom plane we have our X and y-axis rectangle tool at the origin and then go over four inches for the X tab over to go four inches in the Y enter and we now have a four inch square line I'm gonna draw a line here to here notice that it ends right at the outside of the square right click okay t2 trim trim away that geometry that we don't need d2 dimension get a dimension this leg right here at one inch and this one will also be 1 inch sketch drop down menu fill it we're going to around this corner one inch notice that's a little bit too big of a radius so I'm going to deselect that corner by just gonna press escape go back undo there we go sketch fill it and go ahead and fill it this radius at a smaller amount let's go half an inch point five same thing for right here Oh point five and let's see how this looks point five there we go so that's a nice smooth transition with the bigger radius right here enter Oh to offset we're gonna take this geometry and bring it in and offset it about 0.75 so we've got three quarters of an inch enter this part has really no mechanical purpose or just a random geometric widget if you were curious circle tool I'm gonna draw three circles notice these three circles are not exactly lined up and not exactly the same size going to dimension my first circle with a diameter of 0.25 and I'm going to make all three of those the same you can't dimension this and type in the value but that's a little repetitive and not very parametric the best way to do it would be to link this to the first dimension if they're going to be the same size by double-clicking on that dimension and then clicking on the dimension that we want for our kind of target derived dimension so that will be dimension 8 enter and now I can dimension that again click up here or simply just type in d8 an alternative way let me back it up with the undo button would be using the equal constraint I'm gonna make this circle equal equal equal and now when I change the value of this circle it updates the existing ones to align these up first thing I want to do is Center it I'm going to use this inspect tool to measure the distance from here to here and it's 0.75 d2 dimension we're gonna do half of 3/4 so you can go 0.75 and it's kind of cool if you don't like doing math use this little input box as an actual calculator so 0.75 divided by 2 that gives us 3/8 point 375 that gives us our centered dimension down here notice these circles look like they're lined up but they're off a little bit and I'm going to use the horizontal vertical constraint to make them lined up I could dimension each one but this is gonna be faster to make this circle whoops what's going on here horizontal vertical slowing down there we go repeat that you should now be all locked vertically as far as the spacing we can go ahead and put one inch in between each hole and notice these holes are now kind of locked together so we need to figure out a good placement and what we're gonna do is just eyeball it right about there and then go dimension here to here and it will just call that 0.75 to replicate these three holes down here we can recreate what we just did or go to the line tool I'm gonna draw a 45-degree line I'm purposely gonna make this not perpendicular to this edge we're going to use the perpendicular constraint located right here to make this line now 90 degrees to this edge and I'm gonna turn it into a construction line go to the sketch drop down menu mirror I'm gonna select my three objects actually already has four objects selected so I need to deselect this mirror line so back to three then move this down to the mirror line and click on that and now I have my three circles mirror to cross that line stop sketch and there you go sketch fill it once again I'm gonna go ahead and see if I can oh I didn't want to stop the sketch in it once you stop a sketch you go down in the bottom and edit that sketch sketch to get back into it fill it fill at these corners so I'm just gonna leave that right there I want this radius to match so I'm gonna go back I'm gonna measure this radius looks like it's a radius of 0.25 I'm gonna go back to fill it double-click 0.25 enter and once my 2d sketch is done I'm going to stop this sketch press e to extrude click on your surface we're gonna change this to a 3d view so you can see what's going on I'm gonna pull this to make it a 3d solid a thickness of 0.1 I'm gonna click OK save let me now have a 3d solid model now it's time to hop over into the cam workspace to program for these CNC plasma cutter I'm gonna start with our setup change this operation type to cutting and we're gonna put our stock box point at the top bottom left corner use the right-hand rule X to the right Y away and Z always pointing up our stock is going to have a side offset of not one inch because that'll be wasteful 0.1 0 on the top still relative size box and it okay go to the cutting operation first thing we need to do is select our tool in your tool library on your left side you'll have samples we want to select this notice there's a bunch of tools most of these are milling tools what we want to do is go to operation type make it cutting click OK this is gonna filter our tools and we're gonna select the point 0 for plasma cutter for right now this tool is close enough to what we use cutting mode is going to be Auto and then the cutting feed rate is going to be 80 inches a minute for cutting feed rate lead in and lead out feed rates switching over to the geometry tab typically we always are gonna go top to bottom and then left to right through the tabs geometry gonna select that surface that will automatically select all our individual chains we could individually select all these that takes time notice the arrow that arrow indicates which side of the geometry the cutting tool will be on so we want the arrows to be on the inside and if you go back and just select that surface all our arrows typically are always on the correct side but you need to verify the heights tab is pretty much fine with all the defaults same thing with the passes tab and then linking or just gonna hit OK it's good just to see a tool path first and then go back and see what's right what's wrong so looking at our part in our tool path we have an entry coming down cutting out this leading in with the green yellows a rapid where it's not cutting is gonna cut out that and it's gonna come over here notice it is not going to cut out the circles and if we look over here we have this warning if I look at this warning it says one or more passes were discarded due to linking constraints basically our lead in at the default setting is too big to fit inside this hole we need to go into our 2d profile right click edit go to our linking tab the last one and change some of these parameters for our lead-ins the default values work on larger parts but for smaller more refined pieces we need to tweak these built-in defaults in fusion we're going to change one thing at a time so we're gonna take this lead in distance of 0.9 and make it point one two a little bit smaller and see what happens notice we now have our lead-ins inside our circles we're gonna bring this V a little bit closer together make it more perpendicular with what we're cutting by going back into our linking setting and change this to 90 degrees we're gonna run a simulation up here on the tops kind of a little joystick looking button click on that and then we can simulate our cutting path to make the part you also turn on the stock turn off your model sometimes you want the toolpath on or off we're just gonna look at the end results so we can see we got our lead-ins our lead outs everything's looking good the only thing that would be a concern would be the drop pieces so these small pieces are gonna drop through and they're super small and they're not gonna matter this piece right here can possibly be a concern we don't want this piece getting tilted because it doesn't drop all the way through and possibly causing a collision with the plasma cutter so we need to add a tab to this inside piece we're also gonna add a tab to this outside piece because maybe we want this piece to stay connected to our stock and we're just gonna break it off either with pliers or you can twist it off to keep everything from dropping into the water table this is really important for small parts big parts not so much gonna close our simulation notice all I see right now is too fast sometimes this is a thing that happens when you come out of the simulation like oh no my parts gone make sure you go back to your browser and turn on the visibility of your model so we're gonna go back into our 2d profile edit on the geometry tab we have a box for tabs these will hold our pieces put into the stock typically I prefer doing tabs by points the default is by distance and we can see we have one tab to tab three tabs and right here that would technically work it's a little overkill we definitely just want one tab here and then one tab on the outside so we're gonna position these at points which is kind of more manually so I want one tab here notice putting a tab in here and make it difficult to grind away and deeper so we're gonna put the tab on the outside and a flat section it's easy to access the tab width is important depending on the thickness of the material you're cutting on the plasma cutter the amperage that it's set at and the feed rate sometimes if your tab widths are too small they're just gonna melt away this point one setting on thicker material will melt away so we're gonna go 0.15 it's a little bit bigger tab and that will still hold our parts in there we don't want our tabs would be too big because then you're gonna have a difficult time breaking off the tabs run another simulation you can turn off the tool sometimes the head of the tool gets in the way of what's actually going on so here we can see our tabs it look really big but actually in real life this part is rather small and they will be small enough just to break away with some pliers and some twisting and it close that save and then the final step would be to post-process your g code before you post process you need to have the post processor for the techno CNC plasma cutter that is a separate video card in the corner for you to check that out you need to make sure that post is installed before you post process for the plasma cutter to post process we're gonna basically take all this visual information and fusions gonna turn it into g code post process i'm gonna go to setup but first make sure you have this selected post process setup i'm going to use my cloud post because that's where the techno plasma post processor is saved program number i'm gonna call this 1 2 3 4 you can also give it a name but promet program comment will be plasma bracket for youtube youtube YT there's some additional settings in here that can be changed but we're just gonna leave this as default click post and this is where you would save your post process g-code file on a flash drive I'm just gonna put mine on the desktop it can later be transferred to a flash drive and we have this brackets editor that's going to have our program name and all our numerical code that will create the part on the plasma that's it in fusion everything else is out in the shop you

Channel: BRISTON TRAPP

Views: 52,117

Keywords: Fusion 360, Fusion360, cnc plasma, pcsc_machinefab

Id: 7b5kpeV6y5M

Length: 16min 30sec (990 seconds)

Published: Thu Oct 18 2018