1.Introduction to transmission error of reducer gear
There is a gear pair in the reducer. Theoretically, under the ideal assumption, the gear of the reducer is an infinite circle without any error. There is no gap in installation and no error in manufacturing. The gear rigidity of the reducer is infinite and no deformation occurs. The rotation length of the gear engagement point of the reducer is equal. That is, the gears of the reducer are pure rolling friction and the linear speed is equal. Namely:
However, in the actual situation of the reducer gear, due to manufacturing and installation errors, the meshing stiffness of the reducer gear changes and other reasons, the two ends of the formula are not equal, that is, there is a transmission error. The transmission error refers to the difference between the actual displacement of the output end and the theoretical displacement. The transfer error (TE) can be expressed by the following formula:
2.Factors affecting transmission error of reducer gear
There are many factors affecting the transmission error. The design of transmission error is a very important part in the reducer design, which has a great impact on the NVH performance.