High-reliability precise driving device

Abstract

The invention discloses a high-reliability precise driving device which comprises a shell, a servo motor, a transmission mechanism and an angle sensor, wherein the driving device adopts a mechanical-electrical integration design; the transmission mechanism is a novel less differential gear reducer; output transmission errors are sent to the servo motor through the angle sensor so that the transmission mechanism is complementally driven; particularly, the transmission mechanism organically combines a conical eccentric cam and an arc spiral conical gear into a non-backlash precise transmission pair which can self-adaptively compensate tooth surface wear; and a solid lubricating film is coated on an engaging surface of the transmission pair, thus under special and extreme environment, the engaging tooth surface can generate moderate elastic deformation and effectively prevent and eliminate jamming or blocking of the transmission. The high-reliability precise driving device has the advantages of high rigidity, high precision, high reliability, long service life, large torque, low energy consumption, small volume, light weight, free maintenance, and the like, and can be widely applied to equipment in the fields of robot engineering, automotive engineering, vehicle engineering, aeronautical engineering, aerospace engineering, and the like.

Description

technical field [0001] The invention relates to a driving mechanism, in particular to a highly reliable and precise driving device. Background technique [0002] In machinery, vehicles, ships, robots, aviation, aerospace and other important equipment, the power device and deceleration mechanism generally adopt split design; The connection error between them, especially the coaxiality of the shaft system and the transmission meshing error, has a decisive effect on the performance of the entire transmission mechanism. Unqualified assembly error or error chain transmission will cause low transmission accuracy, wear of parts in the transmission mechanism, worsen the operating state of the transmission mechanism, increase the operating noise of the mechanism, reduce the transmission efficiency, and easily cause jamming during the operation of the mechanism. Areas with high transmission requirements will cause greater losses. [0003] For example, planetary reducers, cycloid red...

AI Technical Summary

Problems solved by technology

[0002] In machinery, vehicles, ships, robots, aviation, aerospace and other important equipment, the power device and deceleration mechanism generally adopt split design; The connection error between them, especially the coaxiality of the shaft system and the meshing error of the transmission, has a decisive effect on the performance of the entire transmission mechanism.

Unqualified assembly error or error chain transmission will cause low transmission accuracy, wear of parts in the transmission mechanism, worsen the operating state of the transmission mechanism, increase the operating noise of the mechanism, reduce the transmission efficiency, and easily cause jamming during the operation of the mechanism. Areas with higher transmission requirements will cause greater losses

[0003] For example, planetary reducers, cycloid reducers, and RV reducers have complex structures and poor craftsmanship. When the mechanism is stuck, the dynamic performance is poor, the mechanical efficiency is reduced, and the additional dynamic load is large, especially when transmitting large power. and noisy

Under the long-term alternating load, the flexible spline of harmonic transmission is prone to fatigue wear and failure, and the mechanism is jammed

As a result, mechanical equipment has problems such as relatively large friction, wear, vibration, noise, and reactive power consumption, as well as problems such as poor transmission accuracy, comprehensive performance, and reliability caused by the mechanical transmission system, and shortened service life of equipment.

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