Multifunctional end wall assembly welding tool and welding technology

Abstract

The invention provides a multifunctional end wall assembly welding tool and welding technology. The multifunctional end wall assembly welding tool comprises embedded iron; supporting beam assemblies are arranged on the embedded iron and used for supporting an end wall; and the tops of the supporting beam assemblies are provided with an outer contour measuring mechanism matched with the end wall, and a welding anti-deformation mechanism which corresponds to the end wall and is used for preventing deformation of the end wall are arranged on the supporting beam assemblies. The multifunctional tool provided by the invention is high in flexibility and adjustability, two procedures are integrally conducted through the tool, manpower and the space are greatly saved, and meanwhile, through the tool, prefabrication deformation prevention can be precisely conducted on the welding deformation position, and the overall outer contour radian can be ensured.

Description

technical field [0001] The invention belongs to the technical field of vehicle body manufacture and maintenance, and in particular relates to a multifunctional end wall assembly and welding tool and a welding process. Background technique [0002] The main structure of the rail vehicle body mostly adopts a plate-beam welded structure, that is, a structure connected by arc welding or spot welding between the cover plate and the skeleton. The end wall composition is one of the important components of the rail vehicle body composition. The contour of the end wall circumference and the flatness of the end wall are key characteristics in the manufacturing process of rail vehicles. For the painted car body, the flatness of the end wall directly determines the quality of the subsequent painting process. It is difficult to control the thickness of the putty in the later stage of painting process. For the new generation of stainless steel subway vehicles that are more popular at pre...

AI Technical Summary

Problems solved by technology

[0004] The existing end wall assembly and welding equipment is mainly a supporting structure composed of pre-embedded iron and supporting components. After the end wall skeleton is assembled and welded and repaired, after spot welding on the copper platform and wall panels is completed, the crane and hoisting equipment are lifted Transport it to the end wall to form the tooling, and make repair points. At the same time, perform arc welding on the peripheral contour and skeleton part formed by the end column, and perform resistance spot welding on the wallboard, skeleton, and peripheral end column, etc. After welding, use the spreader Lift it down and turn it over to measure the flatness and outer contour. If it is unqualified, it will be repaired. However, when the outer contour is unqualified and adjusted to pass, the flatness will often deteriorate due to the inability to release the stress during the adjustment of the outer contour. , and when the flatness of the end wall is adjusted, it often leads to a deterioration of the outer contour, so many times of adjustments can make it qualified

[0005] Disadvantages in the prior art: for this single supporting synthetic tooling, arc welding is often used for the lower end wall skeleton and peripheral columns after the end wall is welded. After welding, the flatness of the end wall is poor, and it needs to A large number of repairs are carried out in the follow-up repair process, but because the new generation of stainless steel subways often use stainless steel wire drawing or DF wall panels, it is inevitable to cause certain scratches on the wall panels during the repair process, which cannot be repaired; at the same time, the existing synthetic The tooling cannot guarantee the outer profile of the end wall column during the synthesis of the end wall. Since the end columns of the new generation of stainless steel subway end wall circles are mostly two or more layers, the curvature of the outer profile often requires operators to Use samples to guarantee during assembly. Due to the laborious operation of personnel, and the accuracy is often poor, frequent rework results in waste of personnel and time.

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