Is the helical gear tooth profile in the transverse plane an involute?
Is the helical gear tooth profile in the transverse plane an involute?
(OP)
Colleagues
I have a helical gear. A helical gear has a normal pressure angle which is different to the transverse pressure angle. The tooth profile in the normal plane is an involute.
Question 1:- Is the tooth profile in the transverse plane also an involute?
Question 2:- Is the base diameter in the normal plane the same as the base diameter in the transverse plane?
I have a helical gear. A helical gear has a normal pressure angle which is different to the transverse pressure angle. The tooth profile in the normal plane is an involute.
Question 1:- Is the tooth profile in the transverse plane also an involute?
Question 2:- Is the base diameter in the normal plane the same as the base diameter in the transverse plane?
JWC
Mechanical/Structural
Brisbane, Australia





RE: Is the helical gear tooth profile in the transverse plane an involute?
RE: Is the helical gear tooth profile in the transverse plane an involute?
RE: Is the helical gear tooth profile in the transverse plane an involute?
This is consistent with comment by leisure17.
We therefore calculate the "true" base diameter from the transverse geometry.
When rating the bending strength we use a "virtual" base diameter.
JWC
Mechanical/Structural
Brisbane, Australia
RE: Is the helical gear tooth profile in the transverse plane an involute?
RE: Is the helical gear tooth profile in the transverse plane an involute?
Mfgenggear