The hardened gear reducer is a relatively precise machine. Its purpose is to reduce the speed and increase the torque. The gears of the hardened gear reducer are made of high-strength low-carbon alloy steel through carburizing and quenching. The tooth surface hardness is high. The gears are all made of CNC grinding technology, with high precision, good contact, high transmission efficiency, stable operation, light weight and long service life.
Faults and troubleshooting methods of hardened gear reducers
1. Heat generation and oil leakage of the reducer.
In order to improve the power, the worm gear reducer usually uses non-ferrous metals as the worm wheel, and the worm uses harder steel. Because it is a sliding friction transmission, it will generate higher heat during the working process, causing thermal expansion between the various parts and seals of the reducer, thereby generating gaps, and the oil becomes thinner due to the increase in temperature, resulting in leakage.
Four factors
- Is the raw material allocation reasonable,
- The surface quality of the meshing friction surface,
- The selection of lubricating oil, whether the amount of increase is correct,
- The installation quality and the use environment.
2. Worm gear wear
Worm gears are usually made of tin bronze, and the paired worm material is usually hardened to HRC45-55 with 45 steel, and 40C: hardened to HRC50-55 is also commonly used. It is ground to a roughness of RaO. 8 fcm by a worm grinder. When the reducer is working normally, the worm is like a hardened "file", constantly filing the worm gear, causing the worm gear to wear.
3. Wear of the transmission small helical gear.
It usually occurs in vertically installed reducers, which is related to the increase in lubricating oil and the selection of lubricating oil. When installed vertically, it is easy to cause a lack of lubricating oil. When the reducer stops working, the transmission gear oil between the motor and the reducer is lost, and the gears cannot get the proper lubrication protection. During the working process, no effective lubrication is obtained, resulting in mechanical wear and even damage. The solution is to clean the inside of the reducer with a gearbox cleaning and maintenance machine in time.
4. Worm bearing damage.
When the bearing of the hard-toothed reducer is damaged, even if the reducer box is sealed, it is often found 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 condenses when the gear oil cools from hot during the operation of the reducer.
Conclusion
The hard-toothed reducer is a power transmission mechanism that uses a gear speed converter to reduce the number of revolutions of the motor to the desired number of revolutions and obtain a larger torque. Hard-toothed reducers are widely used in metallurgy, mining, lifting, transportation, cement, construction, chemical industry, textile, printing and dyeing, pharmaceutical and other fields.