Industrial robot wrist

Abstract

The invention discloses an industrial robot wrist including a wrist body and a wrist connecting body. The wrist body and the wrist connecting body are connected and positioned by a bearing, a gap labyrinth structure is formed at the junction of the wrist body and the wrist connecting body, and the gap labyrinth structure is located outside the bearing. The structure of the wrist of an industrial robot is designed rationally, double sealing on the robot wrist position is achieved by means of an oil seal and the gap labyrinth seal structure, and the protection level of the robot wrist is significantly improved; at the same time, since the oil seal and the bearing are almost on the same mounting surface, the width of the robot wrist is not increased, not only is the rigidity of the robot wrist ensured, but also it is ensured that the size of the robot wrist position is more compact, and more application fields can be met; and the sealing performance is high, the maintenance cost of the robot wrist is reduced, and the service life of a robot is prolonged.

Description

technical field [0001] The invention relates to the technical field of industrial robots, in particular to an industrial robot wrist. Background technique [0002] The robot wrist is a part that connects the end effector and the arm, and its function can adjust or change the orientation of the workpiece so that the robot end effector can adapt to complex motion requirements. Robots under harsh working conditions, such as CNC loading and unloading, mobile phone case grinding, metal grinding and other application fields, because the wrist of the robot is in direct contact with the workpiece, once foreign matter such as oil mist, water vapor, dust, metal powder invades from the outside, it will cause The internal parts of the robot's wrist are damaged, which in turn causes problems such as alarms and shutdowns of the robot. [0003] At present, in order to improve the protection level of the robot wrist, it is generally used to install an oil seal on the outside of the bearing...

AI Technical Summary

Problems solved by technology

Robots under harsh working conditions, such as CNC loading and unloading, mobile phone shell grinding, metal grinding and other application fields, because the wrist of the robot is in direct contact with the workpiece, once foreign matter such as oil mist, water vapor, dust, metal powder invades from the outside, it will cause The internal parts of the robot wrist are damaged, which will cause the robot to alarm, stop and other problems

[0003] At present, in order to improve the protection level of the robot wrist, it is generally used to install an oil seal on the outside of the bearing, but it will increase the structural width, especially not conducive to the small load robot in a narrow environment; in addition, there will still be foreign matter intrusion only by relying on the oil seal sealing method. Risk; there is also a method of installing O-rings on both sides of the bearing to seal the wrist. Although the structural width can be reduced, the bearing is in an unprotected state, which accelerates the damage of the bearing, which in turn causes damage to the robot's wrist.

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