Introduction of slewing gear parameters.
Base circle (db, rb):
Involute circle
Addendum circle (d/ra):
A circle connecting the tooth tips of a gear
Dedendum circle (d/rf):
A circle connected at the bottom of the groove
Tooth thickness (si):
On the di circumference, one tooth or so,The arc length between the two tooth profiles.
Tooth groove width (ei):
On the d circumference, The arc length between the teeth.
Pitch (pi):
Pi=si+ei
Divided circle d (r):
Design gear on the divided circle of the reference circle, p=s+e.
Addendum height (hi):
Dedendum height (hf):
Tooth height h=ha+hf
Artificial regulation :m= p/π can only take some simple values, called m. So:d=mz, r = mz/2.
The unit of modulus: mm
It is a basic parameter for the gear’s size, Same tooth no, different modulus, Same divided circle , different modulus