WPA250 reducer is a mechanism that transmits motion and power between two staggered axes in space. The Angle between two staggered axes can be any value, 90 degrees is commonly used. Because of the following characteristics, 200 reducer is widely used.
1. When using single-head worm, the worm rotates once, and the worm wheel rotates only one pitch, so as to achieve large transmission ratio. In power transmission, the general transmission ratio I = 5-80; In indexing mechanism or manual mechanism, transmission ratio can reach 300; If only motion is transmitted, the transmission ratio can reach 1000. Because of the large transmission ratio, fewer parts, so the structure is very compact.
2. In the pole-worm drive, because the worm tooth is a continuous spiral tooth, it gradually meshes with the worm gear tooth, and then gradually exits meshing. At the same time, there are many meshing teeth, so the impact load is small, the transmission is smooth, and the noise is low.
3. When the spiral Angle of worm is less than the equivalent friction Angle of meshing surface, the worm drive is more self-locking.
4. Worm drive is similar to helical gear drive, with relative sliding at meshing point. When the sliding speed is very high and the working conditions are not good enough, serious friction and wear will occur, resulting in excessive heat and deterioration of lubrication. So large wear, low efficiency; Worm drive self - locking, efficiency is only about 0.4. At the same time, due to the serious friction and wear, it is often necessary to use non-ferrous metal worm gear to make it pair with steel worm gear, forming a sliding friction agent with good anti-wear performance.
