Hi Barry and Friend ,
Sending another method for building the Globoid Worm Gear-
We build the rotating shaft starting, this time,
from the four helix positioned in the points
of discomincteness of the teeth .....
The result seems good to me, but it must be said that for the
construction of this type of gears
we must conform to the parameters that govern
gear shaping, including tolerances, etc etc.
the posted one wants to be just an example of the methods
of construction ...
far from the mechanical precision imposed on the gears
the file at this link:
http://www.mediafire.com/file/v5avcjbz2ax2pwe/Four_Helix_Mod_x_Globoid_Worm_Gear.rar/file
Good depth
have a nice day to all
alberto