Welding spot positioning method and system based on image processing

Abstract

The invention belongs to the technical field of welding spot positioning, and relates to a welding spot positioning method based on image processing, which comprises the following steps: S1, reading a first welding spot estimated coordinate (xc, yc, zc) from a welding spot design file, wherein xc is the estimated abscissa of the center of the first welding spot, yc is the estimated ordinate of the center of the first welding spot, and zc is the shooting height of a camera; S2, moving the camera to an estimated coordinate; S3, performing automatic focusing based on the image definition; S4, after the clear image of the workpiece is obtained, calculating the center position coordinate of the welding spot workpiece, replacing the design coordinate value of the welding spot with the calculated coordinate value, and completing positioning of the welding spot coordinate; and S5, judging whether coordinate positioning of all the welding spots is completed or not, if so, ending the program, otherwise, reading the estimated coordinate of the next welding spot, and returning to the step S2. According to the invention, the welding spot coordinate positioning efficiency and accuracy can be improved. The invention further provides a welding spot positioning system based on image processing.

Description

technical field [0001] The invention belongs to the technical field of solder joint positioning, and relates to a solder joint positioning method and system based on image processing. Background technique [0002] In the welding production process, the position of the welding torch has a great influence on the welding quality. Usually the welding process is the last process of connecting parts into parts or products. Therefore, before welding, each part needs to be assembled together and put into the membrane of the positioning part for welding. Ultrasonic welding is generally applied to soluble materials such as plastics, and each part has a certain degree of elasticity after molding. Although each welding point has a size in the scattered part drawing, once assembled, the assembly size will be inconsistent with the design size due to various reasons such as part deformation, loose fit during assembly, and parts not being fixed. , if the position of the solder joint after...

AI Technical Summary

Problems solved by technology

Manual guidance to determine the accuracy of the solder joint position depends on the operator's visual experience, and is a very time-consuming task, especially when there are many solder joints on the parts to be welded and a wide variety of welding products. It is hard work, and it is easy to make mistakes. Once the wrong position of the solder joint occurs, it will lead to the scrapping of the welded parts and direct economic losses.

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