Vehicle body draft, bolster and buffer assembling and welding process

Abstract

The invention discloses a vehicle body draft, bolster and buffer assembling and welding process. The vehicle body draft, bolster and buffer comprises a body bolster, a draft sill, a coupler mounting base, a buffer sill and an end sill which are all made of aluminium alloy materials. The process comprises the following steps: (A) assembling and welding the coupler mounting base; (B) assembling andwelding the composition of the draft sill and a cover plate; (C) assembling and welding the components of a body bolster plate; (D) welding the buffer sill and a lower cover plate after machining thebuffer sill; and (E) assembling and welding the end sill, the buffer sill, the coupler mounting base, the draft sill and the body bolster on general assembly equipment; ensuring the verticality between the coupler mounting surface and the air spring mounting surface to be not more than 1.5mm; ensuring the deviation from the center of the coupler mounting base to the center of the air spring hole to be not more than + / -1mm; and ensuring the maximum straightness to be 2mm after assembling the end sill. The process has the beneficial effects of solving the problem of assembling and welding of the aluminium alloy structures of high-speed trains, collecting the parameters of aluminium alloy welding through experiments, perfecting the aluminium alloy assembling and welding process, preventing deformation after welding and variation of the material displacement size, ensuring the product quality and reducing the production cost and energy waste.

Description

technical field [0001] The invention relates to an aluminum alloy assembling and welding product process, in particular to a material machining and assembling process of a trinity of aluminum welded parts, which is a car body tension pillow, and belongs to the field of product manufacturing technology. Background technique [0002] Aluminum alloy has the advantages of light weight, corrosion resistance, good appearance flatness, easy manufacture of complex curved surfaces, high specific strength, etc., and has been valued by the track modification industry around the world. At present, my country's rail transit is facing the development of high-speed passenger cars, subway passenger cars, light rail trains and high-speed heavy-duty trucks. The lightweight of trains is the first choice for increasing the speed of trains. Aluminum alloy materials can reduce self-weight, reduce resistance during operation, reduce energy consumption, and increase load, so the railway transportat...

AI Technical Summary

Problems solved by technology

But at present, in the process of aluminum alloy assembly and welding products in our country, especially the process of all-welded aluminum alloy assembly and welding in the assembly and welding process of car body, the process of all-welded aluminum alloy is still not perfect, and there are obviously complicated processes, too many links, and inconvenient operation. The problem is that it increases the production cost and energy waste, and aluminum alloy welding is easy to produce air holes and deformation. Therefore, for the welding parts of important parts of the vehicle, good assembly technology and welding technology must be used to ensure product quality.

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