Posted by tom on November 07, 2012 at 13:06:02:
In Reply to: Re: how to set Gears for 15 degree helical angel Gear posted by mirza on November 07, 2012 at 07:37:29:
index z27=
g = number of threads of the gear hob
27 = constant machine
z = number of teeth to be cut (z27)
(27*1)/27 = 1
20/20*22/22= 1
ok!!
differential
0.500 = constant machine
sin α;; helix angle (measured pitch angle) 15°
modul= 3,5
(0.500* sin α;; 15)/ 3,5 = 0.036974149
30/29*39/43 =0.938251804
I think it's wrong,
my machine and this formula, make a test with a piece of nylon .. :-))
regard tom