An Intelligent Diagnostic Method for Multisource Coupling Faults of Complex Mechanical Systems

Table 2

Failure parts list.

Fault location		Fault type	Processing methods	Fault size (mm)	Coding
Bearing	Outer ring	Line erosion	Wire cutting	0.10	B_OR(a)
	Outer ring	Pitting	EDM	0.05	B_OR(b)
	Rolling element	Line erosion	Wire cutting	0.10	B_B(a)
	Rolling element	Pitting	EDM	0.05	B_B(b)
	Inner ring	Line erosion	Wire cutting	0.10	B_IR(a)
	Inner ring	Pitting	EDM	0.05	B_IR(b)
Gearbox	Planetary gear	Severe line erosion	Wire cutting	0.20	P_1
	Planetary gear	Slight line erosion	Wire cutting	0.05	P_2
	Planetary gear	Pitting on the tooth surface	EDM	0.05	P_3
	Planetary gear	Gear missing angle	Milling	0.10	P_4
	Planetary gear	Tooth surface microwear	Milling	0.02	P_5
	Sun gear	Severe line erosion	Wire cutting	0.20	S_1