Rotatory Condition at Initial Stage of External Spline Rolling

Table 1

Parameters of standard circular-dedendum spline in China [17].

Pressure angle	Addendum coefficient	Dedendum coefficient	Module	Number of spline teeth
𝛼 (°)	ℎ^∗𝑎	ℎ^∗𝑓	m (mm)	𝑍𝑤
30	0.5	0.9	0.5, (0.75), 1, (1.25), 1.5, (1.75), 2, 2.5, 3, (4), 5, (6), (8), 10
37.5	0.45	0.7		10~100
45	0.4	0.6	0.25, 0.5, (0.75), 1, (1.25), 1.5, (1.75), 2, 2.5