Common terminology for understanding the principle of reducer and the function of reducer, reduction ratio, transmission ratio, torque calculation formula, use coefficient, principle of cycloidal pinwheel reducer, function of reducer components, installation of planetary reducer, installation of geared motor, etc. The understanding plays a vital role in the selection and use of the reducer.
WPWKA60,WPWKA70,WPWKA80,WPWKA100,WPWKA120 The helical gear worm gear reducer is a transmission machine with a compact structure, a large transmission ratio, and a self-locking function under certain conditions. Moreover, the installation is convenient and the structure is reasonable, and it is more and more widely used. It is to add a helical gear reducer to the input end of the worm gear reducer, and the multi-stage reducer can obtain a very low output speed, which has higher efficiency than the single-stage worm reducer, and has small vibration, noise and energy efficiency. Low.
Common problems and causes of helical gear and worm reducer 1. Reducer heat and oil leakage. In order to improve efficiency, worm gear reducers generally use non-ferrous metals as worm gears, and worms use harder steel. Due to the sliding friction transmission, more heat will be generated during operation, which will cause differences in thermal expansion between the parts of the reducer and the seals, thus forming gaps on the mating surfaces, and the lubricating oil will become thinner due to the increase in temperature, which will easily cause leakage. . There are four main reasons for this situation, one is the unreasonable matching of materials; the other is the poor quality of the meshing friction surface; the third is the incorrect selection of the amount of lubricating oil added; the fourth is poor assembly quality and use environment. 2. Worm gear wear. The worm wheel is generally made of tin bronze, and the paired worm material is hardened to HRC4555 with 45 steel, or 40Cr hardened to HRC5055, and then ground to a roughness of Ra0.8μm by a worm grinder. The reducer wears very slowly during normal operation, and some reducers can be used for more than 10 years. If the wear speed is fast, it is necessary to consider whether the selection is correct, whether it is overloaded, and the material of the worm gear, assembly quality or use environment and other reasons. 3. The transmission small helical gear is worn. It usually occurs on a vertically installed reducer, and it is mainly related to the amount of lubricating oil added and the type of oil. In vertical installation, it is easy to cause insufficient lubricating oil. When the reducer stops running, the transmission gear oil between the motor and the reducer will be lost, and the gears will not be properly lubricated. When the reducer is started, the gears will be mechanically worn or even damaged due to lack of effective lubrication. 4. The worm bearing is damaged. When a failure occurs, even if the gearbox is well sealed, it is often found that the gear oil in the reducer is emulsified, and the bearings are rusted, corroded, and damaged. This is because after the reducer has been running for a period of time, the condensed water generated after the temperature of the gear oil rises and cools is mixed with the water.
Of course, it is also closely related to the bearing quality and assembly process. Second, the solution of helical gear and worm gear reducer 1. Ensure the assembly quality. You can buy or make some special tools by yourself. When disassembling and installing the parts of the reducer, try to avoid hitting with other tools such as hammers; when replacing gears and worm gears, try to use original parts and replace them in pairs; when assembling the output shaft, pay attention Tolerance fit; anti-sticking agent or red lead oil should be used to protect the hollow shaft to prevent wear and rust or dirt on the mating area, which is difficult to disassemble during maintenance.
