The reducer is a power transmission organization. The speed converter of the gear is used to reduce the rotation number of the motor (motor) (reducer motor) to the desired rotation number, and obtain a larger torque organization. In the organizations that are currently used to transmit power and movement, the application scale of reducer is appropriate and extensive.
Common problems and their factors:
(1) Reducer heating and oil leakage
(2) Worm gear wear
(3) Worn transmission bevel gear
(4) Bearing (worm) damaged
1. Reducer heating and oil leakage
In order to improve the power of the worm gear reducer, non-ferrous metals are usually used as the worm gear, and harder steel is used. Because it is a sliding friction drive, high heat will occur during the working process, making the thermal expansion between the reducer parts and seals different, so that there will be gaps in each cooperation surface, and the oil will become thinner due to the increase of temperature, which is easy to form leakage.
The first factor is whether the raw materials are properly prepared, the second is the surface quality of the meshing friction surface, the third is the selection of smooth oil, and whether the increase is accurate, and the fourth is the device quality and application environment.
2. Worm gear wear
The worm gear is usually made of tin bronze. The data of the paired worm is usually hardened to HRC45-55 with 45 steel. It is also commonly used to harden HRC50-55 with 40C. The worm is ground to a roughness of RaO.8fcm by the worm grinder. When the reducer works normally, the worm is like a hardened "file", which keeps filing the worm gear to make the worm gear wear.
Generally speaking, this kind of wear is very slow. For example, some reducers in a factory can be used for more than 10 years. If the wear rate is fast, it is necessary to consider whether the type selection of the reducer is accurate, whether there are factors such as overload, raw materials of worm gear and worm, device quality or application environment.
3. Worn transmission bevel gear
It usually occurs on the reducer of vertical device, mainly related to the increase of smooth oil and the selection of smooth oil. When the vertical device is installed, it is easy to form a lack of smooth oil. When the reducer stops working, the transmission gear oil between the motor and the reducer will be lost, the gear will not get the smooth maintenance it should have, and the mechanical wear and even damage will be caused by the lack of useful smoothness during starting or working.
4. Worm bearing damaged
When the reducer breaks down, even though the gearbox seal is outstanding, the factory often finds that the gear oil in the reducer has been emulsified, and the bearing has been rusted, corroded, and damaged. This is because the gear oil is formed by condensation of water after the reducer is cooled from heat during operation and shutdown; Of course, it is also closely related to bearing quality and device process method.
