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Analysis on the solutions to the failure of planetary gear reducer

来源: 发布日期:2019-10-10 11:13:41

 Planetary gear reducer is also called planetary reducer, servo reducer.In the reducer family, planetary reducers are widely used in servo motors, stepping motors, DC motors and other transmission systems due to their small size, high transmission efficiency, wide reduction range, high precision and many other advantages.Its function is to reduce the speed, increase the torque and reduce the load/motor moment of inertia ratio under the premise of ensuring precise transmission.


  For the wear problem, the traditional solution is repair welding or machining repair after brush plating, but both have certain drawbacks: the thermal stress generated by the high temperature of repair welding cannot be completely eliminated, and it is easy to cause material damage and cause the parts to bend or break; and Electric brush plating is limited by the thickness of the coating and is easy to peel off. The above two methods use metal to repair the metal, which cannot change the "hard-to-hard" coordination relationship. Under the combined action of various forces, it will still cause re-wear.For some large bearings, it is impossible to solve the leakage problem on the spot. The traditional method needs to disassemble and open the reducer, replace the sealing gasket or apply the sealant, which is time-consuming and laborious, and it is difficult to ensure the sealing effect. The leak occurred again.In the long-term operation of the reducer, failures such as wear and leakage will often occur. The most important ones are:

  1. Wear of the bearing chamber of the reducer, including the wear of the housing bearing box, the bearing chamber of the box bore, and the bearing chamber of the gearbox

  2. The shaft diameter of the gear shaft of the reducer is worn, and the main wear parts are the shaft head, keyway, etc.

  3. The bearing position of the reducer transmission shaft is worn. 4. The joint surface of the reducer is leaking.

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