According to the hardness of the tooth surface of WPWKT155,WPWKT175,WPWKT200,WPWKT250,WPWDKT40 the reducer, gear transmission is usually divided into two categories, namely hard tooth surface gear transmission and soft tooth surface gear transmission. Usually the tooth surface hardness of a pair of meshing gears is greater than 350HBS, which is called a hard tooth surface gear, otherwise it is called a soft tooth surface gear. According to the hardness of the tooth surface, people usually divide gear transmission into two categories, namely hard tooth surface gear transmission and soft tooth surface gear transmission. The choice of gear transmission should be based on the design requirements.
Both gear transmissions have their own advantages and disadvantages, but the transmission with hard tooth surface has large load, long service life and is widely used. There are many materials and heat treatment methods used for hardened gears, such as the commonly used ones: 40Cr. 45#.45Mn2 steel can be subjected to final heat treatment, high-frequency tempering or nitriding treatment, such as 20Cr.20CrMnTi.20CrMnVB.20CrNiH, etc. can be used Carburizing and quenching, such as 38CrMnAl, can use the nitriding process to achieve higher hardness.
Some special materials require special heat treatment methods. General reducers include helical gear reducers (including parallel-axis helical gear reducers, worm gear reducers, bevel gear reducers, etc.), planetary gear reducers, cycloid pinwheel reducers, worm gear reducers, and planetary friction reducers. Mechanical continuously variable transmission, etc.
Common types of reducers: 1) The main feature of the worm gear reducer is that it has a reverse self-locking function and can have a large reduction ratio. The input shaft and the output shaft are not on the same axis or on the same plane. However, they are generally larger in size, have low transmission efficiency and low precision. 2) The harmonic transmission of the harmonic reducer uses the controllable elastic deformation of flexible components to transmit motion and power. It is small in size and has high precision. However, the disadvantage is that the flexspline has limited life, is not impact resistant, and is rigid and metal parts. relatively poor. The input speed cannot be too high. 3) The advantages of planetary reducer are relatively compact structure, small return clearance, high precision, long service life, and the rated output torque can be very large. But the price is slightly expensive. The function of the reducer: 1) Reduce the speed and increase the output torque at the same time. The torque output ratio is based on the output of the stepper motor multiplied by the reduction ratio, but be careful not to exceed the rated torque of the reducer. 2) Decreasing speed also reduces the inertia of the load, and the reduction of inertia is the square of the reduction ratio. You can see that generally motors have an inertia value.
