Automatic detection and repair unit and method for welding seam of structural piece

Abstract

The invention discloses an automatic detection and repair unit and method for a welding seam of a structural piece. The automatic detection and repair unit for the welding seam of the structural piece comprises an automatic detection part, an automatic repair part and a centralized electric control part, wherein the automatic detection part comprises a positioning detection station table, a grabbing and stacking mechanical arm I, an automatic detection mechanical arm and an automatic detection electric control device; the automatic repair part comprises a positioning repair station table, a grabbing and stacking mechanical arm II, an automatic repair mechanical arm and an automatic repair electric control device. According to the automatic detection and repair unit for the welding seam of the structural piece, computer control automatic operation is completely adopted, and the automatic detection and repair unit can be seamlessly connected with a digital bus of a factory to realize centralized digital management and is relatively high in automation degree and high in detection efficiency, so that the influence of human factors such as responsibility and mood of operators on the production progress can be avoided, and meanwhile, the unit is free from limitation of operating skill proficiency of the operators and is particularly suitable for a detection procedure of the welding seam of the structural piece of the digital bus factory.

Description

technical field [0001] The invention relates to a detection unit and a detection method, in particular to a welding seam detection unit and a welding seam detection method suitable for detecting the welds of structural parts, belonging to the technical field of structural parts manufacturing. Background technique [0002] The structural parts in the machinery industry are structural entities made of rigid materials, with a certain shape and capable of bearing loads. Generally, a variety of steel plate parts of different shapes are positioned, spliced ​​and welded to form a structural entity. Usually, there are box structures, racks, etc. Type structure, rod structure, cylinder structure, tank structure and other structural forms, such as construction machinery frame, fuel tank, mechanical arm, working tools and other components, such as train bogies, chassis and other components, such as logistics vehicle chassis , Containers and other components, such as pressure vessels fo...

AI Technical Summary

Problems solved by technology

That is to say, even if the structural parts can be automatically welded by the welding robot, the finished welded structural parts need to be removed from the welding platform, and after aging treatment, they should be placed on the inspection platform for weld inspection. There is a problem of deviation between the positioning reference of the weld inspection and the positioning reference during the welding process, and the weld inspection of the structural parts cannot realize the online inspection with the same positioning reference on the welding platform

In addition, due to the unavoidable welding deformation, the tolerance range of welded parts is generally on the rough millimeter level. The welded finished size of the welded structural parts usually deviates from the standard structural part design size, which results in the standard structural part design size. There are deviations between the weld position size and path length of the generated structural weld modeling model and the weld position and path length of the actual welded product of the structural part. Therefore, it is difficult to automate the weld detection of structural parts, and inspection personnel are usually used Manual testing is carried out by testing instruments. However, manual testing not only has the influence of human factors such as the sense of responsibility and emotion of the inspectors on the inspection progress, but also requires high testing skills and experience for the inspectors.

Images