Multistate Reliability Analysis of Recessive Fault of Mechanical Meta-Action Unit Based on Markov Process

Table 5

Reliability control measures table.

Recessive fault types	Cause of failure	Reliability control points	Reliability control measures
Coupling slippage	Excessive torque during operation	Deformation of rubber material	Replace the rubber coupling with a light metal one-piece double-port coupling
Flat key slack	Long-term wear	Generate assembly gap
Worm axis deviation	Strong vibration occurs during operation	The snap ring between the worm, the support, and the axle bearing is loose	Install the base plate of the meta-action unit, drill holes on the base plate according to the size of the base, and assemble and strengthen the base and the base plate
Axle bearing heating	Too long running time results in friction heat generation	The ball inside the axle bearing is not lubricated enough	Physical cooling with coolant and regular lubrication and maintenance
Accidental worm stuck	Routine maintenance is less, the worm port is corroded and rusted	There is too much water vapor in the assembly gap