Analysis and Optimization of the Vibration and Noise of a Double Planetary Gear Power Coupling Mechanism

Table 2

Gear parameters of the first and second reduction mechanisms.

Parameters	First reduction mechanism		Second reduction mechanism
	Driving gear	Driven gear	Driving gear	Driven gear
Tooth number	54	55	24	77
Face width (mm)	30	30	25	25
Direction	Right	Left	Right	Left
Module (mm)	2.5		2
Pressure angle	20°		20°
Helix angle	30°		30°