Flexible chemical equipment for friction stir welding of side walls of subway vehicles

Abstract

The invention discloses a frication stir welding flexibility tool for a subway vehicle side wall. The frication stir welding flexibility tool comprises a pair of I-shaped beam bases, four square steel bases symmetrically arranged on the two sides of the I-shaped beam bases respectively, multiple locating and clamping mechanisms installed on the square steel bases in a sliding manner, multiple beams installed on the I-shaped beam bases in a sliding manner and a turnover mechanism. Every two adjacent beams are connected with a pair of rotary welding joint supporting strips and a pair of fixed welding joint supporting strips in a sliding manner. The tool is suitable for frication stir welding of the subway vehicle side wall; common features of existing and following projects are fully considered, the universality of the tool is improved; high cost for a newly-made tool is saved; the preparation cycle of tools for new projects is greatly shortened; the space and the position occupied by the tool are saved; the project production tool switching time spent in the multi-project combined production process is shortened; the accuracy and uniformity of the tool are guaranteed; and the capacity is improved. The tool is good in reliability, simple in structure, high in efficiency and suitable for practical application.

Description

technical field [0001] The invention relates to a fully welded aluminum alloy subway vehicle side wall friction stir welding flexible chemical equipment, which belongs to the technical field of subway vehicle side wall assembly welding. Background technique [0002] Compared with arc welding, friction stir welding has great advantages: fast welding speed, small welding deformation, high weld strength, no need for welding wire and shielding gas, no smoke, no arc light, low noise, and can save a lot of cost. Therefore, in aluminum alloy It has been widely used in the welding of subway vehicles. In order to weld vehicles, it is necessary to use tooling to position and install the parts to be welded. Due to the large number of aluminum alloy subway vehicles, there are also vehicle side wall structures of different models (side wall outer contour, side wall unit distribution, side wall height, etc.) These differences will inevitably lead to the variability of their tooling requi...

AI Technical Summary

Problems solved by technology

As a result, the existing tooling in the workshop cannot be used reasonably, and the new tooling also occupies the limited layout of the workshop, and it takes a long time to design and manufacture a set of tooling, which often cannot keep up with the project progress requirements. At the same time, the manufacturing cost is greatly increased and reduced. Product competitiveness, this production idea has seriously affected the reliability and efficiency of new project execution, and urgently needs to be improved

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