A method for realizing one-time forming of the welding seam of the chassis suspension shell structure

Abstract

The invention discloses a method for realizing the one-time forming of the welding seam of the chassis suspension shell structure. After the short welding seam is welded, move to the arc end of the third welding seam and use the welding spot to fix it. When the welding seam reaches an effective seam, output the clamp opening request twice to the PLC. When the welding reaches the spot fixing position, output the welding Permission request, when continuing to weld to the track point before the positioning mechanism, the program sets an instruction to wait for the clamp to be opened twice in place, and set the timing in the T-shaped diagram and associate it with the above instructions. If the clamp is opened twice within the timing The signal in place indicates that the positioning mechanism has been reset, and the welding is normal until the end; otherwise, the welding is interrupted. The invention has no other requirements on automatic welding equipment, is simple in operation, can form the welding seam at one time, has stable quality, and is suitable for one-time forming welding of any space-limited structure.

Description

technical field [0001] The invention belongs to the field of automatic welding of automobile parts, and particularly relates to a method for realizing one-time forming of a welding seam of a chassis suspension shell structure. Background technique [0002] The chassis suspension in auto parts is one of the three core components of the vehicle structure, and is an important carrier of transmission and bearing mechanics. The product structure is designed with box structure, shell structure and other types. Weld point connection and welding seam connection are adopted on the upper part. In the design process of welding point connection, there is a distance between the welding points, sufficient space, and good accessibility of welding tongs, so that welding can be easily realized in one process during process development. However, in the welding seam strength design, the welding seam lap joint design is usually adopted in order to meet the strength requirements and economical p...

AI Technical Summary

Problems solved by technology

[0004] The joint design of welding seam overlap is sometimes located directly below the process hole of the shell structure. In addition, the surface of the plate is complex, and the space formed between the positioning mechanism and the positioning mechanism is limited. The accessibility of the welding torch is poor. Generally, the welding torch is used at the end of welding. The method of large-angle welding wire long dry stretching method realizes lap joints, but the corresponding weld length is insufficient, the appearance of the end of the weld is irregular, the joint is not full, and defects such as burn-through occur, resulting in the scrapping of parts

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