Rigid-soft cooperative stirring friction welding device

Abstract

The invention relates to a rigid-soft cooperative stirring friction welding device. The rigid-soft cooperative stirring friction welding device comprises a welding robot, a stirring head arranged at the bottom of the welding robot, a working platform arranged below the welding robot and three flexible cable mechanisms uniformly arranged on the periphery of the working platform in 120 degrees and connected with the welding robot. Each flexible cable mechanism comprises a flexible cable, a tensioning device and a torque motor, wherein one end of the flexible cable is connected with the welding robot, and the other end of the flexible cable is arranged on the tensioning device. The rigid-soft cooperative stirring friction welding device is provided with the three flexible cable mechanisms connected with the welding robot. The position of the welding robot can be adjusted by adjusting the flexible cable mechanisms. The rigid-soft cooperative stirring friction welding device has high rigidity and machining precision and also has the advantage that mutual cooperation conditions between the welding robot and the flexible cables are changed according to the factors such as the welding environment and the thickness and size of welding parts so as to complete welding operation better.

Description

technical field [0001] The invention relates to the field of friction stir welding, in particular to a rigid-flexible cooperative friction stir welding device. Background technique [0002] Friction stir welding (FSW) is a new type of solid phase joining technology invented by the British Welding Institute in 1991. Compared with traditional fusion welding, friction stir welding has many advantages, such as: small welding deformation, good mechanical properties, no need to add welding wire, no need for shielding gas, low cost and environmental protection, etc., so it is very easy to realize engineering and automation , and belongs to green manufacturing, with stable quality and high reliability. [0003] Parallel Wire-driven Manipulator (PWM for short) is a new type of robot developed since the 1980s. The majority of scholars pay attention. The flexible cable parallel driving mechanism can overcome some shortcomings of the traditional mechanism. They can produce great acc...

AI Technical Summary

Problems solved by technology

Considering the characteristics of friction stir welding, the parallel cable-driven robot equipped with a stirring head needs excellent stiffness performance, so general industrial robots cannot meet this requirement, and the parallel cable-driven mechanism with redundant drive can use high-stiffness strengths to meet their work needs

[0004] Most of the existing friction stir welding equipment is tandem robots. The rigidity and precision of tandem robots are not high enough to meet the requirements of high processing quality and precision.

Images