Several causes of oil leakage of harmonic reducer
Data：2020-06-23 11:33:38 Views：
Grease leakage is one of the common faults of robots. Leakage will cause the reducer to reduce oil and break oil, which will aggravate the wear of gear engagement surfaces, which will lead to poor accuracy of the robot. More serious consequences may lead to robot accidents and end users. Economic losses. At the same time, the leakage caused pollution to the environment and corrosive effects on the basic equipment, and also seriously affected the construction of the plant 6S.
So what is the reason for the oil leakage of the reducer?
1. Pressure difference between inside and outside of the reducer
During the operation of the reducer, various internal friction pairs generate a lot of heat, which causes the internal temperature to increase and the pressure to increase. Under the effect of the pressure difference, the grease leaks from the gap. The higher the temperature rise inside the reducer, the greater the risk of leakage.
2. The sealing structure design is unreasonable
2.1 The premise of the oil seal pumping effect is that the contact pressure peak should be close to the oil side. When the pressure peak is close to the air side, the oil side pressure gradient is less than the air side pressure gradient, and the oil seal must leak.
2.2 No design static seal
2.3 The mating surface roughness is too low
3. The oil seal of the reducer fails
At high temperatures, grease will accelerate the dissolution of the rubber, leading to early seal failure. Early
Wear and leakage.
4. Too much grease filling