On-shaft connector and connection structure for connecting motor shaft and speed reducer

Abstract

The invention relates to an on-shaft connector for connecting a motor shaft and a speed reducer. The on-shaft connector is characterized by realizing connection between a wave generator of a speed reducer and a motor shaft of a servo motor through a connection flat key, forming a shaft shoulder through a shaft sleeve, so as to provide axial spacing effect for the wave generator; and when not changing the common server motor and the speed reducer, by means of the characteristics of the motor shaft key groove, realizing direct connection between a motor without a shaft should and a wave generator without screw holes in a harmonic speed reducer. The on-shaft connector has the advantages of being reliable in realizing connection, being simple in structure, being simple and convenient, greatlyreducing the fault risk, and reducing the technical demand for assembling and maintenance staff. A connection structure for the motor shaft and the speed reducer is realized on the basis of the on-shaft connector; a tooth hole in the shaft end of the servo motor is utilized; a shaft cover is added on the end surface of the wave generator; the wave generator is locked through a lock screw; the assembling process is simple, and the reliable connection effect can be achieved; and connection between the inner bore of the wave generator and the shaft neck of the motor shaft is realized, without increasing any volume nearly.

Description

technical field [0001] The invention relates to a shaft coupling mechanism, more specifically, to an on-shaft coupling for coupling a motor shaft with a reducer. Background technique [0002] The components of small-sized industrial robots on the market, such as motors and reducers, all use customized components to meet the technical requirements of "small-sized". The purpose of customizing the motor is usually to obtain greater torque output with a smaller volume. The customization of the reducer is also to obtain better performance with a small volume. For example, the middle hole of the harmonic reducer with the same specification is larger. Even the wave generator is directly integrated with the gear. Robotic castings are also inherently made from lighter and more difficult-to-pour materials. The overall purpose is to meet the requirements of small volume articulated arm to achieve higher load and high performance. [0003] As for the design scheme of realizing indust...

AI Technical Summary

Problems solved by technology

However, if the selected servo motor shaft does not have a step or the harmonic reducer wave generator does not have a specific screw hole, the connection is not easy to achieve, and even needs to be customized to solve the problem

[0005] Different implementation methods lead to corresponding shortcomings in the connection between the servo motor and the reducer: 1. The structure is complex and the volume becomes larger; 2. The cost increases and the delivery time becomes longer

[0008] However, as the connection device between the reducer and the motor, it is necessary to add a connection device with a complex structure between the reducer and the motor. The installation is cumbersome, and it is located outside the reducer and the motor, which will still increase the overall volume.

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