How to model simple timing belt in Fusion 360

[@cooperlarson5178]

Buddies a wizard in f360, took me some time to figure out all your tricks as you move quite fast; but it was worth its weight in gold just seeing how a proficient master can effortlessly navigate complex layout tasks. Well done, sir!

[@stuartdejong2219]

This is super helpful and you were right about needing to hit the pause button a few times. I think you may have left out a small point about using the d21 and another dimension from sketch 2(0.254) in the change parameters tab to redefine the linear dimensions of the offset values from the pitch line...When I reached the point in the drawing approximately 7:38, my drawing looked different and the belt did not match up with the offset lines ...I think yours may have been similar but when you edited the video it got cut out. I got through it and I think I have achieved the same result just thought I would mention it in case others experienced a similar issue. I am still pretty new to modeling and this was an interesting challenge and very educational on ways to implement parameters to utilize different formulas. Thanks for the content! I'll be watching out for new stuff in the future.

[@percytait893]

Great video. I figured out the offset lines tweak at the end. I liked the pace, kept me on my toes!

[@Lantos1618]

Absolutely crazy to me that there isn't a full specification by the creators of the GT2 timing belt that isn't available readily. There are belt specifications available but no timing pulley specifications? lol who would of thought the first thing that the engineers using your product would like to model belts and pulleys. Thanks for this video Dan. The pattern around a path was what I was after!

[@i-make-robots]

idk, I googled for "gt2 pulley dimesion diagram" and got www.chiefdelphi.com/t/timing-pulley-design-tutorial/383204 ; www.chiefdelphi.com/uploads/default/original/3X/6/e/6e21e2c1446a83cf34f9217a9c94ab3336a4683b.png

[@Lantos1618]

@@i-make-robots Thanks, yeah but I mean the people who made the timing belt, Gates. Could have easily made this as a source of truth. Also I don't think these account for the internal teeth squish factor (outside of belt curvature != inside belt curvature)

[@Rayray-mm3zc]

This is quality content mate.

[@theeltea]

Nice keyboard ASMR, tutorial is nice too.

[@DropofLead]

Ok, so I have finally seen the Yoda of F360 -- should have this done in about 7 to 8 hours

[@tinkerman1790]

Incredible tutorial online 👍🏻 Thx a million 🙏🏻

[@orionmec]

Nice work Dan! Thank You. Haha, Dang Dan, ease up on the keyboard! hehehehe

[@fn326]

Can you do a motion study on this? I want to learn how to make it move. Great tutorial btw

[@i-make-robots]

I cannot yet do a motion study on this. But on the two pulleys with a revolute link, sure.

[@joehlloyd]

Great tutorial, thanks. I have a question - what do you do now the belt has been modeled? Do you get one custom made? Can one off the shelf be ordered that is an exact match? thanks

[@i-make-robots]

I'm only modelling existing belts to make sure my parts fit correctly and there's plenty of clearance. I've never heard of anyone getting a custom belt made.

[@David_Best]

At 2:30 you put in the number of teeth at 90. Where did you come up with that number? It seems pulled out of the air. Please explain.

[@i-make-robots]

In my example one gear has 90 teeth. Replace with your gear tooth count.

[@RandyGlissmann]

Good stuff. Timing belts have been giving me fits. Can I use the timing belt body to derive the pulley design? I want to 3d print the pulleys.

[@i-make-robots]

Qualified yes. I can make part of a pulley from the side touching the belt and then pattern it. I cannot then tweak the edge (Q key). Making a new sketch on the flat side of the pulley with a projection + offset makes fusion freeze for several moments. so does the cut from the offset region. Better to model a single tooth, cut it from a disc, and then repeat that around the disc.

[@konan8658]

I only wish you had something to show the key presses, but awesome video thank you! Also I felt that at 9:45

[@i-make-robots]

My keyboard shortcuts have been customized, it would be more confusing than helpful.

[@darkracer1252]

@@i-make-robots then don't use keyboard shortcuts in a tutorial video. it's completely useless like this

[@codeblocks4067]

You should upload the stl for the belt somewhere, thanks for the tutorial etiher way.

[@i-make-robots]

The stl or the fbx?

[@codeblocks4067]

@@i-make-robots FBX would be great, would be really appreciated. Doing a CNC in Fusion and I don't really need the belt (made motor position adjustable) and it's a hobby project so don't want to put lots of time in but it'd sure look good.

[@i-make-robots]

@@codeblocks4067 www.printables.com/model/223338-simple-gt2-timing-belt-from-tutorial

[@codeblocks4067]

@@i-make-robots You rock, thanks.

[@MichaelTeeuw]

This is a pretty old video, so not sure if anyone will read this. But I was giving it a try with some other properties (5mm tooth pitch, belt diameter: 425, pulley 1: 75 teeth, pulley 2: 15 teeth), and the calculated center to center distance turned out to be incorrect. The calculated result was 86.9472mm, but by measuring the path, this meant that the belt length would be 425.842 mm. If I used a manual center to center distance of: 86.4425 mm, the belt length was correct. So I'm not sure why the center to center distance is incorrect. I'll take another look at it tomorrow after a good night sleep. But so far I havent found the issue. Any help is appreciated.

[@theprogramaster]

the tutorial is grate but can you add a program that displays all the hotkays that are you using because there are some people like me coming from maya to f360 and i we are noobs trying to lern and we dont know the keys you are pressing

[@i-make-robots]

I probably have customized shortcuts that wouldn't help. Sorry :(

[@88electroguy]

If I download a belt from McMaster Carr, can I change the shape of that object to match my pulleys?

[@i-make-robots]

no

[@CrispyGFX]

Just to double check, this is a solution for a static model only, correct? This can't be animated in any fashion, right?

[@i-make-robots]

Correct. Wouldn't that be nice! Belt physics!

[@jonasrayet9369]

;(

[@hobby7999]

Bonjour lorsque j'ecris la formule centre to centre avec les mêmes parametres je n'ai pas le resultat 54.1761 mais 466.809 Pouvez vous m'aider Merci

[@i-make-robots]

est-ce que ca aide? www.marginallyclever.com/2020/12/how-to-model-timing-belt-in-fusion360/

[@hobby7999]

@@i-make-robots Ok cela fonctionne bien Merci

how do you determine the pitch line for the tooth so i can position it correctly? if i follow the steps it gaves me a different total outside length for my belt.

[@i-make-robots]

outside and pitch are two different amounts. The pitch line is determined by the math in the video and the number of teeth on the belt.

@@i-make-robots so the final outside lenght is not the same lenght that the belt length the math of the video?

[@FilmFactry]

Thank you!

[@rakennus7674]

You are awesome

[@ihavecojones]

Sounds like you're stirring in a pot of keys :))

[@joshlamont]

So it turns out, if you have over a thousand teeth, Fusion360 crashes!

[@i-make-robots]

500 teeth + mirror?

[@joshlamont]

@@i-make-robots Huh, wonder if that would be better or worse? All those extra constraints... I mostly did the math equivalent of "this space doesn't matter" and reduced the belt by eight feet.

[@JaredReabow]

love the video but SERIOUSLY stop using your custom keys without at least vocalising what you are doing

[@shanetravis8680]

Dont bang on the keyboard there's nothing more annoying the trying to listen to someone and all you ear is a keyboard it almost as tryin to watch a kung-fu movie badly dubbed

[@i-make-robots]

Quiet mechanical keyboard? isn't that an contradiction? But for real I relate, I don't want bangbang in my audio, either. Thank you :)

[@richardpoindexter9274]

It's amazing how you can't find anyone smart enough to teach you. Oh...am I suppose to say it like that?

[@i-make-robots]

Sorry... what?

[@richardpoindexter9274]

Are you trying to impress yourself or give a tutorial? Slow down. Going as fast as you can has one goal in mind and that is to make sure that those listening cannot follow you because your just too good right? I get your point. It's not about the what's being taught but everyone noticing how fast and how knowledgeable you are at this. Oh.....but the outcome is suppose to be the learner keeping up with you? The great genius belt maker? Who only few can keep up with? yeah I know it's something like that.

[@i-make-robots]

Dude, you don’t even know how to pause and rewind. If you did you’d have no issue with my speed. Everyone else has figured it out. Road rage on the information superhighway. Wow.

[@theofficialczex1708]

@@i-make-robots If it's any consolation, I didn't have any issues following along. Looks like Richard's a bit of a Sunday driver.

[@stonefish98]

@@i-make-robots To continue the automotive analogy, you're doing 40km/h in a school zone, in first gear, with a whistle-tip exhaust and truck nuts. Technically ok, but you're still a bit of a tool. A tutorial that needs to be run in slomo or rewound many times is a poorly paced tutorial.

[@theeltea]

@@i-make-robotsNaaah, I had to 0.75 the video and even then it took me quite a few rewinds to figure shit out... It's just too fast for beginners.

[@JohnRae]

Great video. Thanks