Magnetic clamping system for laser welding

Abstract

The invention discloses a magnetic clamping system for laser welding. The magnetic clamping system provides clamping force needed in welding through magnetic force of a permanent magnet material, is simple and reliable and can well remove gaps between parts and guarantee product quality. The magnetic clamping system comprises electric control permanent magnet worktables, a centralized control unit and a magnetization and demagnetization cable. Each electric control permanent magnet worktable is formed after arraying a plurality of electric permanent magnet modules according to the shape and welding position of a weldment, wherein the number and shape of the electric permanent magnet modules can be flexibly designed according to actual needs. The centralized control unit magnetizes or demagnetizes the electric control permanent magnet worktables independently through the magnetization and demagnetization cable to achieve modular control. In this way, different electric control permanent magnet worktables can be selected to be independently or simultaneously magnetized or demagnetized according to the sequence requirement of a welding technology, and accordingly the magnetic clamping system is convenient and flexible to use.

Description

technical field [0001] The invention relates to a clamping system, in particular to a magnetic force clamping system for laser welding. Background technique [0002] At present, when forming the wall panel of the train car, the base plate and the reinforcement beam are welded together by laser automatic welding. During welding, a pressing mechanism is required to compress the base plate and the reinforcement beam to make the gap between the base plate and the reinforcement beam Less than 0.2mm. Existing plate positioning and compaction mostly adopts a multi-point compaction method combining a press plate and a crossbeam cylinder. However, due to the large size of the pressing plate and the large span of the beam, in order to ensure the strength of the beam, the pressing mechanism is relatively heavy. At the same time, when the traditional cylinder compression method is adopted, since the part between the two compression points is not subjected to the compression force, it ...

AI Technical Summary

Problems solved by technology

However, due to the large size of the pressing plate and the large span of the beam, in order to ensure the strength of the beam, the pressing mechanism is relatively heavy

At the same time, when the traditional cylinder compression method is adopted, since the part between the two compression points is not subjected to the compression force, it is easy to cause the gap between the base plate and the reinforcing beam to exceed the standard, resulting in unqualified products

Moreover, the traditional clamping method also requires manual locking of the pressure plate and installation of the beam, which is labor-intensive and takes a long time for clamping, and the cylinder needs to be driven by compressed air, which consumes a lot of energy.

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