Parallel robot joint structure

Abstract

A parallel robot joint structure is set for a parallel robot. The parallel robot has plural first poles, second poles and a movement platform; the first poles have a first connection part; the second poles has a second and a third connection part; the movement platform has a forth connection part; the second connection part is connected to the first connection part; and the forth connection is connected to the third connection part. The parallel robot joint structure is characterized in that one of the first poles, the second poles or the movement platform has a chamber; the chamber penetrates the surface of the first connection part of the first poles, the second connection part of the second poles, the third connection part of the second poles or the forth connection part of the movement platform corresponding to the above items to form a hole; the hole is covered by one of the first connection part of the first poles, the second connection part of the second poles, the third connection part of the second poles or the forth connection part of the movement platform.

Description

technical field [0001] The invention relates to a parallel robot, in particular to a joint structure of a parallel robot. Background technique [0002] By the way, with the progress of society and the increasing demand for industrial automation, the demand for robots is increasing day by day. Generally speaking, the structure of robots can be divided into serial mechanism and parallel mechanism. Compared with serial robots, parallel robots have the advantages of higher precision, small motion inertia, large carrying capacity, and smaller working space, which makes parallel robots widely used. Take the Delta robot as an example, such as U.S. Patent No. 4976582, which is a parallel robot. Each joint is a combination of two bearing sets to achieve two degrees of freedom joints. The three upper arms are used as active bodies to connect the lower arm and the motion platform. . Another example is U.S. Patent No. 7735390. The Delta robot provided by it uses four upper arms to ch...

AI Technical Summary

Problems solved by technology

[0003] However, it can be found from the known technology that the current parallel robot has no lubrication mechanism design in the joint structure between its rods, which is quite unfavorable for the joints that are often in operation, and is prone to wear and reduce the operating life

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