Stud welding technology for automobile body sheet metal part

Abstract

The invention discloses a stud welding technology for an automobile body sheet metal part. The stud welding technology comprises the following steps of: S1: selecting a spot welding station of a sheetmetal part; S2: taking a stud, and placing the stud on a corresponding position of a lower electrode tip; S3: taking the automobile body sheet metal part, and flatly placing the automobile body sheetmetal part on the top of the stud to be in contact with the top of the stud, pressing down a fixture clamping button to enable a clamping air cylinder to downwards move, and stably fixing the automobile body sheet metal part and the stud between an upper electrode tip and the lower electrode tip; and S4: carrying out welding by a robot, after the welding is finished, pressing down a fixture opening button to automatically open a fixture, and taking the sheet metal part by an employee to finish welding. According to the stud welding technology disclosed by the invention, an electric resistancewelding principle is adopted to carry out stud welding, through design of an electrode and a tool structure, different welding parameters are combined for conducting optimization, the stud can be stably welded to the surface of the automobile body sheet metal part in an electric resistance welding form, stability of welding quality is improved, complicated specialized welding equipment and labourcan be omitted, and development cost is greatly saved.

Description

technical field [0001] The invention belongs to the field of welding technology, and in particular relates to a stud welding process for automobile body sheet metal parts. Background technique [0002] The welding process is a process in which the materials of the workpiece are bonded between atoms to form a permanent connection. Many parts of the car and the entire car body are connected in the form of welding. With the development of lightweight cars, due to the light weight of aluminum alloys, the development of aluminum alloys in the automotive industry is becoming more and more obvious. The alloy welding process has also become a hot topic. However, there are still various problems in the stud welding process of various automobile body sheet metal parts on the market. [0003] For example, the conductive stud welding disclosed by the authorized announcement number CN101653861A, although it realizes a reliable and firmly bonded connection between the joining element and...

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Problems solved by technology

[0003] For example, the conductive stud welding disclosed by the authorized announcement number CN101653861A, although it realizes a reliable and firmly bonded connection between the joining element and the workpiece, it does not solve the problem of the existing automobile body sheet metal stud welding. There are still problems in the welding process: the traditional stud welding process of automobile body sheet metal parts is arc welding process, the cost of stud welding machine is high, and the stability is poor. Therefore, we propose a stud welding method for automobile body sheet metal parts. craft

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