Friction stirring device with adjustable filling pressure and welding method

Abstract

The invention discloses a friction stirring device with adjustable filling pressure and a welding device. The friction stirring device comprises a framework, wherein two linear motors are mounted on the framework; each linear motor is connected with a slider; a pair of first bearings is mounted in each slider; a push rod is clamped between each pair of the first bearings; the lower end of each push rod is fixedly connected with a support plate; each support plate is fixedly connected with a material guide bar; the lower part of the framework is fixedly connected with a support frame; second bearings are nested in the support frame and arranged on a rotary device in a sleeving manner; the rotary device is fixedly connected with a stirring head body; material guide holes are formed in the stirring head body; a metal filling bar and one of the material guide bars are sequentially arranged in each material guide hole; and a spring and a pressure sensor are arranged on each material guide bar in a sleeving manner. The invention solves the problem that welding defects are caused by metal loss of conventional friction stirring heads; the pushing forces of the linear motors can be controlled to ensure that the filling pressure of the metal filling bars can be controlled according to actual demands; and the propulsion is more scientifically selected to guarantee moderate and appropriate metal filling.

Description

technical field [0001] The invention relates to a friction stirring device and a welding method with adjustable filling pressure, belonging to the field of welding. Background technique [0002] Friction Stir Welding (FSW) is a solid-phase joining technology. Compared with the traditional welding process, FSW welding process has no smoke and spatter, no electromagnetic radiation, safety and environmental protection; the energy consumption during welding is low, and the workpiece before welding No beveling is required, no need to add welding wire and shielding gas during the welding process, energy saving and high efficiency; there will be no defects such as pores and cracks, and the overall performance of the joint is good; the structure of the welding equipment is simple, and it is easy to realize automatic welding and robot welding; at the same time, as long as the design is suitable FSW can realize welding of different positions, different sizes and different interfaces, ...

AI Technical Summary

Problems solved by technology

[0005] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a friction stir device and welding method with adjustable filling pressure, which solves the problem of welding defects caused by lack of metal in the friction stir head in the past, and makes the weld more compact

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