Worm tooth angle
Worm tooth angle
(OP)
We use a worm and worm gear on a brake adjuster essentially as static load members. I am working on a modified design of worm with buttress thread. I tried to verify my calculation method using the existing drawing. I calculated the pitch from the worm gear Pitch dia & no of teeth. Using this as axial pitch for the worm I calculated the "tooth angle" ( lead angle) as Pitch/(Pi x Worm pitch dia). I got a higher value than in the drawing.
I would appreciate any suggestions
I would appreciate any suggestions





RE: Worm tooth angle
RE: Worm tooth angle
Yes, I used arctan - just missed that in the post. I went back and checked the numbers - it works out OK now. I must have used the root dia instead of pitch dia.
Thank you for your help