Mathematical Model of Helical Gear Topography Measurements and Tooth Flank Errors Separation

Table 1

Parameters of the gears in the trials.

Items	Symbol	Unit	Data
Driving gear		—	30
Driven gear		—	30
Normal model		mm	6.5
Pressure angle		deg	20
Helix angle		deg	13
Face width		mm	53
Top profile crowning		1/mm	0.0011
Bottom profile crowning		1/mm	0.0014
Top limit angle		rad	0.496
Bottom limit angle		rad	0.196
Front longitudinal crowning		1/mm	0.0012
Back longitudinal crowning		1/mm	0.0012
Front limit angle		rad	0.018
Back limit angle		rad	0.104