Generation and Meshing Analysis of a New Type of Double Helical Gear Transmission

Table 1

Parametric design of normal section of tooth profiles.

Parametric design	Symbols	Pinion tooth profile	Gear tooth profile
Normal modulus
Pressure angle	α	18°~36°	18°~36°
Tooth height	h1, h2	(1.3~1.5)mn	(1.34~1.54)mn
Radius of tooth profile curve	ρa, ρf	(1.3~1.5)mn	(1.34~1.54)mn
Circle centre movement distance	ea, ef	0	0.01mn
Circle centre offset distance	la, lf	0.59mn	0.55mn
Distance linking contact point and pitch curve	hk	0.63mn	0.63mn
Tooth thick at contact point	Sa, Sf	1.54mn	1.54mn
Tooth space at contact point	,	1.6mn	1.54mn
Tooth crack	j	0	0.05mn
Addendum chamfer angle of gear tooth	γe		45°
Addendum chamfer height of gear tooth	he		0.16mn