3D Printed Parts on an FRC Robot?

[lorykzarr]

Originally Posted by Munchskull

How do people model custom HTD 5 pulleys for 3d printing?

You could try using the model of some pulley stock (with the correct tooth count, profile and pitch of course) so that you don't need to draw out the profile in a sketch. Then add whatever bolt holes or bores you need.

[Munchskull]

Originally Posted by lorykzarr

You could try using the model of some pulley stock (with the correct tooth count, profile and pitch of course) so that you don't need to draw out the profile in a sketch. Then add whatever bolt holes or bores you need.

Thanks, however part of my motivation is learning how pulleys are designed from the ground up.

[troy_dietz]

Originally Posted by Why_A_Username?

You guys made that roller on an FDM printer? Did you vapour smooth them? That is a super smooth and clean finish on them.

It looks like it may be a combination of a lower layer height, high quality filament, and possibly the way the picture is taken. (you could also have the layers start on the inside of the roller to prevent Z-scar from showing)

I'm not saying it isn't vapor smoothed ABS, but there are other ways to get that effect.

[Cothron Theiss]

Originally Posted by Munchskull

Thanks, however part of my motivation is learning how pulleys are designed from the ground up.

Check out the Gates belts and metals design manual. Gates has lots of information about the design of timing belts and pulleys. Also, Gates refers to their pulleys as "metals." Just a little tip to navigate their site.

[cbale2000]

Originally Posted by Munchskull

How do people model custom HTD 5 pulleys for 3d printing?

I can't speak for everyone else, but I do know that Autodesk Inventor has a tool that allows you to generate standard sprockets/gears/pulleys of various sizes and tooth counts.