4

1

I'm trying to design a "Lifting Table" in OpenSCAD which will consist of 2 concentric cylinders. On the inner cylinder I plan to mount 3 un-powered bevel gears vertically plus a 4th powered one each at the proper location/angle to interface with external cylinder's spiral bevel gear and keep the external cylinder level.

OpenSCAD's involute_gears library makes a bevel gear pair that is close to what I need, but the bigger gear is flat instead of a spiral. How can I get the bigger gear to be a spiral and more than one rotation (level) 720 degrees for example?

Did you get the parametric file for OpenSCAD? Have you found the parameters which represent the change you'd like to make? – fred_dot_u – 2019-12-29T18:50:51.173

I think I did, I'm using involute_gears.scad for the parametric file. I have not found parameters to make a spiral gear. – Alan Kwiatkowski – 2019-12-29T23:30:24.990

What I picture you are seeking is a large diameter worm gear pinion (bigger gear in your question) but with teeth instead of a flat surface. That's going to be quite challenging! – fred_dot_u – 2019-12-30T00:00:29.650

Are you looking for a library like this parametric "Gears Library for OpenSCAD"?

– 0scar – 2020-09-10T07:47:30.960