Hollow speed reducer for fourth shaft of welding robot

Abstract

The hollow speed reducer for the fourth shaft of the welding robot comprises a fourth shaft body and a motor shell, and the hollow speed reducer is fixedly installed in an inner cavity of the fourth shaft body through screws. Compared with the prior art, better precision is achieved through direct-drive transmission, errors of synchronous wheel belt or gear transmission do not exist, lubricating grease is not needed due to the fact that a gear transmission structure is not arranged, the design of an oil seal and an oil cavity structure is not needed, and a special motor shell is manufactured; the motor stator, the encoder and the brake are integrated and embedded into the hollow speed reducer with the motor rotor, so that the size and the weight are reduced, the inner diameter size of the hollow speed reducer can be effectively increased through the structure of the hollow direct-drive motor, and due to the fact that the structure is simplified, the purchase cost is greatly reduced; therefore, the purposes of being simple in transmission structure and easy to assemble and maintain are achieved, creativity and usability of the device are improved, and the use experience of a user is enhanced.

Description

technical field [0001] The invention relates to the technical field of modern industrial manufacturing automation, in particular to a hollow reducer for the fourth axis of a welding robot. Background technique [0002] The reducer plays the role of matching the speed and transmitting torque between the prime mover and the working machine or the actuator. It is widely used in modern machinery. The reducer can be divided into two categories: general reducer and special reducer. The design, manufacture and use characteristics of the reducer are different. The reducer is an independent closed transmission device between the prime mover and the working machine. It is used to reduce the speed and increase the torque to meet the work needs. It is also used in some occasions. To increase the speed, it is called a speed increaser. When selecting a reducer, it should be based on the selection conditions of the working machine, technical parameters, performance of the power machine, ec...

AI Technical Summary

Problems solved by technology

[0004] In view of the problems existing in the prior art, the purpose of the present invention is to provide a hollow reducer for the fourth axis of a welding robot, which has the advantages of high precision, easy installation and maintenance, and solves the problem that the transmission mode of the traditional reducer is divided into two types: : One is gear meshing: gear meshing transmission precision is higher, assembly and integration is more difficult, must be lubricated with grease during operation, the purchase cost is higher, the second is synchronous pulley belt: the cost of synchronous pulley belt device is low, and it is easy to install and maintain , but the motion accuracy is not high, resulting in complex structure, difficult assembly and maintenance problems

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