Robot joint with power-off protection function and adjustable rigidity

Abstract

The invention discloses a robot joint with a power-off protection function and adjustable rigidity. A spring press plate and a steel ball are arranged in the support structure, the steel ball elastically moves in the axial direction of the mechanical support structure, a shallow pit matched with the circular arc surface of the steel ball is arranged on a steel ball press plate, the steel ball press plate is in rotating connection with the mechanical support structure through a bearing connecting device, when the external input torque acts on the mechanical support structure, the steel ball drives the steel ball press plate to rotate, and when the torque is oversize, the steel ball is disconnected from the shallow pit of the steel ball press plate. An annular clamp groove with a groove is formed in the connecting plate and is clamped and connected with a convex strip arranged on the side wall of the steel ball press plate, and the double protection effects are realized on the robot joint. A convex block matched with a magnetic slide block is arranged on the side wall in an outer casing, a spring pushes a friction layer of the magnetic slide block to be pasted with the convex block, and the braking is realized. The robot joint has the advantages that under the condition of not influencing the normal mechanical and electrical connection, the overload protection function on the joint is realized, after the overload disappears, the initial state can be conveniently and fast recovered, and in addition, the power-off protection function is realized.

Description

technical field [0001] The invention belongs to the technical field of robots, and in particular relates to a robot joint with power-off protection function and adjustable stiffness. Background technique [0002] With the rapid development of automobiles, chemicals, electronics, food processing, plastics, life sciences and other fields, especially in the field of robotic equipment, the transmission accuracy, safety and reliability, small size, and shock absorption of the drive joint transmission system Noise, light weight, maintenance-free and other performances put forward more stringent standards. [0003] Modular industrial robots change the limitations of traditional industrial robots, can adapt to complex and changeable working environments and given tasks, expand the application fields of industrial robots, and gradually become a hot spot in robot research. Modular robots are assembled from a series of modules. Through the free and flexible reconfiguration of the modu...

AI Technical Summary

Problems solved by technology

[0004] When the robot needs to perform operations such as picking and placing, handling, and drilling, it will generate a large load force; especially when the robot encounters sudden failures such as sudden loading and excessive acceleration, the load will increase greatly; if the electromechanical interface is simply transmitted The torque and impact force will be completely transmitted to each joint, which will easily cause damage to the robot parts; or require the size of the parts to increase and the drive power to increase, which will cause a waste of cost

Images