profile shifted spur gear/pinion
profile shifted spur gear/pinion
(OP)
Hi,
I need help on finding correct formula for addendum and dedendum calculations for profile shifted spur gear/pinion.
thanks
NRM
I need help on finding correct formula for addendum and dedendum calculations for profile shifted spur gear/pinion.
thanks
NRM





RE: profile shifted spur gear/pinion
RE: profile shifted spur gear/pinion
Israelkk suggests, you have a learnning curve to straddle
but one step at a time. Good luck to understanding profile shifts and long and short addendum gearing and are also called recess action gearing.
RE: profile shifted spur gear/pinion
I will look at maithra handbook.
Till now I was looking at qtcgears.com
I know that gear calculations with profile shift is not easy subject to understand.
Here is some more info on which i am working.
Spur gear
Module 18
Pinion 17 teeth, Gear 151 teeth
working center distance 1529.28mm
Profile shift- x1= +0.5 and x2= +0.5
I have calculated as per info on qtcgears.com
Addendum=(1+y-x2)m for pinion and =(1+y-x1)m for gear with centre distance increment factor y=0.96025
i am getting addendum 26.284mm for pinion and 26.284mm for gear.
But gear supplier is mentioning addendum 23.451 for pinion and 9.666 for gear. (backlash max.1.139mm and min 0.639mm)
I want to know which is correct? Is backlash making so much difference?
thanks,
NRM
RE: profile shifted spur gear/pinion
is correct for the system, you are
nearer to the solution than the vendor.
1.00 plus .50 yields 1.50 x 18 = 27 addendums
for both pinion and gear. Since you have not
stated the pressure angle, I cannot calculate
the working center distance. If the backlash
is the total backlash in the system, it does
seem reasonable for that large of a gear.
RE: profile shifted spur gear/pinion
Pressure angle - 20deg
Backlash mentioned is Total backlash
nrm