Transmission error of planetary reducer in industrial robot industry

Release time：

2022-10-19 00:00

Planetary reducer is a relatively common power transmission equipment, which is used in various construction machinery transmission control systems. The installation and use of the planetary reducer can directly affect the operation effect of the reducer, and it must comply with the technical development norms and standards of the enterprise. As the core functional component of China's industrial intelligent robots, the planetary reducer has the advantages of large reduction ratio, high precision, high rigidity and high efficiency, which well guarantees the performance of industrial robots' motion products, and is widely used in industrial robots, machine tools, and military industries. and medical industries.

Set each part of the equipment as a rigid body, and replace the small displacement caused by machining error, clearance, installation error and deviation from the theoretical position with the change of spring between each part, which is called equivalent error. According to the equivalent error, the stress of each part is deduced, and the dynamic equation of the part is established. By solving the dynamic equation at the same time, the small displacement of each part can be obtained, so as to calculate the rotation angle deviation of the output shaft, that is, the transmission error.

For a high-precision planetary reducer, the machining error, tooth profile modification error and fit error of each part are the direct factors affecting the transmission error. Due to the large number of parts and the compact structure of the reducer, the influence of the tolerance of each part is complicated, which brings great difficulties to the analysis of transmission errors.