Compound driven shoulder joint

Abstract

The invention discloses a compound driven shoulder joint. The compound driven shoulder joint comprises a cross shaft, a movable hinge frame and a fixed hinge frame, and a swing driving part and a pitching driving part for respectively driving the movable hinge frame to swing and pitch; the movable hinge frame is rotationally matched with a first shaft body of the cross shaft; a second shaft body of the cross shaft is rotationally matched with the fixed hinge frame; the swing driving part and the pitching driving part both adopt a memory alloy drive and electric drive combination driving mode; and in a swing driving mode and a pitching driving mode, the precise driving of single motor at low load can be realized, and the heavy-load and high-precision combination driving of memory alloy drive and electric drive synchronous driving at heavy load also can be realized.

Description

technical field [0001] The invention relates to the field of mechanical joints, in particular to a compound-driven shoulder joint. Background technique [0002] With the development of robot technology, people hope that the new robot arm will have high precision, fast response, good quality, long life, low energy consumption, small size, light weight, large torque, strong carrying capacity, high reliability, and intelligence. , modularity, reconfigurability, etc., but also hope to have good flexibility to obtain better security and self-recovery capabilities. There are mainly two drive modes for the drive joints of existing robot arms, one is single drive drive, such as traditional motor drive, hydraulic drive and pneumatic drive, and new memory alloy, piezoelectric ceramics, pneumatic artificial muscles and other drives. Among them, the motor drive is a relatively traditional driving method, which has large driving displacement, high driving precision, simple driving circu...

AI Technical Summary

Problems solved by technology

Among them, the motor drive is a relatively traditional driving method, which has large driving displacement, high driving precision, simple driving circuit, low energy consumption, and convenient control, but has the defect of small driving torque; in addition, in order to provide larger torque, the existing There are a variety of joints with compound drive structures, but most of them are complex in structure, cumbersome in operation, low in sensitivity, and in some cases still have the disadvantage of insufficient precision

That is to say, in the existing technology, the drive of the robot arm still has the problem that the heavy load and high precision cannot be guaranteed at the same time. How to solve this technical problem has become an imminent challenge

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