Circumferential weld seam welding method and welding device

Abstract

The invention provides a circumferential weld welding method and a welding device. The circumferential weld welding method comprises the following steps that the center positions of machining holes are determined based on the center position of a plate body, the machining holes are located in the plate body, and the two sides of the center position of the plate body are each symmetrically provided with a pair of machining holes; and on the basis of the center positions and the preset radii of the machining holes, at least three welding working points are calculated and determined so as to calculate and determine the groove positions of the machining holes, wherein all the welding working points are located on a welding track of a circumferential weld between a pipe body and the plate body. According to the welding method, the center positions of the machining holes can be accurately determined through calculation, and the center line track of the groove positions of the machining holes is determined based on the center positions of the machining holes, so that the welding positioning accuracy of the circumferential weld is improved, the defect that the welding track of automatic welding cannot be accurately positioned due to non-uniform assembly gaps between a pipe and a plate is effectively overcome, and the welding quality is improved.

Description

technical field [0001] The invention relates to the field of welding technology, in particular to a girth weld welding method and a welding device. Background technique [0002] In the manufacturing process of rail vehicles, due to the limitation of the assembly structure of the bogie frame, the structure of the welding seam of the side beam and the beam is mainly: after the ends of a pair of tubes of the beam are inserted into the cavity of the side beam, A pair of girth welds are respectively formed between a pair of pipe bodies and the web of the side beam. Typically, girth welds formed on framing are multi-layer, multi-run welds, and ultrasonic testing must be performed on these girth welds to determine weld quality. Based on this, the frame assembly welding by manual welding has the defects of high work intensity and high quality requirements. Therefore, it is of great significance to realize the girth weld welding between the tube sheets on the frame by automatic wel...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a girth weld welding method, which is used to solve the problem that the welding track cannot be accurately positioned due to the uneven assembly gap between the pipe body and the plate body in the existing automatic girth weld welding process, and realizes Effective improvement of product welding quality

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