My team needs to design a large pulley for part of our robot however we are having problems with the tooth profile once they have been printed. I have followed all the steps that I have seen online, however, the belt can only effectively put like 8 teeth into the pulley before the spacing becomes too much. I have been using the timing pulley diameter calculator spreadsheet but I am not sure I am using it right. Does anyone know a tried and true 5mm HTD pulley dimensions that work across multiple diameters?
1 Like
There are pulley generators in various places as the tooth profile can get a bit tricky if you aren’t familiar with it. The configurable versions on MKCAD (onshape) can be found here:
Thank you, my team, actually uses inventor so it wasn’t the first play I was looking at. And then when I did look it was not the one that could be configured.
We’ve had success downloading pulley/gear models off SDP-SI in the tooth count we want and transfering the sketch profile into Inventor.
In that case, make a quick copy of this one, change the configuration to suit your need, and then export the model into inventor.
The option of downloading the model directly from SDP-SI or another similar location is also a great idea.
Yup this is what I just did we are printing a trial section right now
What size pulley are you trying to Model? I use this guide (It is for Fusion360 but should work just fine for Inventor). If you are trying to create a pulley with more than 111 teeth then their diameter spreadsheet does not work. In that case use the pulley OD calculator at this link. and put that dimension into step 3. Let me know if you have any questions, we used this process for modelling a 255 Tooth HTD pulley for our turret.
Ah that makes sense why it wasnt working. it was above a 111 tooth pulley.
This topic was automatically closed 365 days after the last reply. New replies are no longer allowed.