I have been trying to fiddle out how to calculate a worm gear for a given worm I have here. I ahve found a lot of information but reading all that I still do not get it.
The two parameters I have is
Outside diameter of the worm is 13.5mm
The pitch or the spiral tooth is 1.27 mm
Now I want to design a 235 or whatever teeth worm gear for it. The worm gear does not really have to be a concave teeth shape. Straight teeth is good enough.
So far by trial & error and printing a 3D test piece, I have come up with the following looking at the transverse_Pitch being the same as the pitch I measured at the worm.
Anybody knows of a page with a calculator in order to correctly get the module for the Involute gear ?
Thanks Rainer
Code: Select all
OS: Windows 10 Version 2009
Word size of FreeCAD: 64-bit
Version: 0.20.29177 (Git)
Build type: Release
Branch: releases/FreeCAD-0-20
Hash: 68e337670e227889217652ddac593c93b5e8dc94
Python 3.8.10, Qt 5.15.2, Coin 4.0.1, Vtk 8.2.0, OCC 7.6.2
Locale: Spanish/Latin America (es_419)
Installed mods:
* AnimationFreeCAD 1.0.0
* fcgear 1.81.0
* Help 1.0.3
* ThreadProfile 1.81.0