Filtering reducer with high reliability and precision

Abstract

The invention discloses a filtering reducer with high reliability and precision, which comprises an eccentric power input shaft, a duplicate gear, an internal fixing gear and an internal power output gear, wherein an eccentric section is arranged on the eccentric power input shaft; the duplicate gear comprises an external gear I and an external gear II, and rotationally matched with and mounted on the eccentric section in a sleeving manner; the internal fixing gear and the external gear I form a small tooth difference engagement pair I; the internal power output gear and the external gear II form a small tooth difference engagement pair II; and elastic grooving filtering structures are arranged in the small tooth difference engagement pair I and the small tooth difference engagement pair II, and comprise gear tooth grooves formed in gear teeth of the gears. Each gear tooth groove comprises two curved gear tooth grooves and a straight gear tooth groove, wherein the curved gear tooth grooves and tooth outlines of gear teeth form equidistant curves respectively; and each straight gear tooth groove is formed between a tooth crest of each gear tooth and a joint of every two curved gear tooth grooves; and / or, the elastic grooving filtering structures comprise gear grooves formed in tooth grooves of the gears; the gear grooves comprise straight gear grooves formed in the tooth grooves symmetrically; and the gear tooth grooves and the gear grooves are filled with elastomer.

Description

technical field [0001] The invention relates to a reducer, in particular to a high-reliability precision filter reducer adopting the principle of meshing with few tooth differences. Background technique [0002] With the rapid development of engineering fields such as robotics, automation, aviation, aerospace, ships, vehicles, and weapons and equipment, high-precision, high-reliability, long-life, high-torque, low-energy consumption, and small High-performance requirements such as volume, light weight, and maintenance-free, and because the performance of transmission parts and transmission systems directly affects the function and life of important equipment to a large extent, so explore innovative design theories for high-performance transmission parts and transmission systems , methods and technologies have very important scientific significance and engineering use value for improving the reliability, motion accuracy and prolonging the service life of electromechanical equ...

AI Technical Summary

Problems solved by technology

[0003] In the existing transmission technology, the contradictory relationship between high precision and high reliability has not been resolved. Although precision transmission parts such as harmonic reducers and RV reducers and transmission systems are important equipment electromechanical transmissions in robotics, automation, aerospace and other engineering fields It is widely used in the system, but the flexible wheel of the harmonic reducer is prone to failure due to fatigue damage, while the internal structure of the RV reducer is very complicated, and there are defects such as poor dynamic performance, low mechanical efficiency and large additional dynamic load. reduce the reliability of its work

Especially in special environments and extreme working conditions such as high and low temperature alternating, vibration shock, etc., due to the thermal deformation of the gear material and the coupling vibration generated by the influence of the working environment, it will lead to tooth profile interference and even "jamming" between teeth "Even "stuck" phenomenon, which seriously affects the accuracy and reliability of gear transmission, and even causes complete failure of transmission parts and systems

[0004] On the other hand, in the power transmission and motion control systems of various equipment, because the power device transmits and converts power into mechanical energy through gears, the high speed and small torque at the input end are transformed into low speed and high torque at the output end. To avoid fluctuations in the speed and torque of the transmission system; the manufacturing and assembly errors of each part, the impact of meshing and meshing when the teeth mesh, the wear and load of parts during operation, and other factors, It will also cause greater fluctuations, increase vibration, noise, friction, wear, fatigue and reactive power consumption, which will affect the overall performance of the power transmission and motion control system, such as transmission accuracy, high reliability, and service life.

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