Middle positioning fixture for vehicle left and right side wall inner plate front assembly welding

Abstract

The invention relates to a middle positioning fixture for vehicle left and right side wall inner plate front assembly welding. The middle positioning fixture comprises a rack, a cylinder mounted on the rack, a pressing arm pulled by the cylinder to rotate around the rack, a middle positioning block mounted on the pressing arm, a first upper staggered pressing block, a first lower staggered pressing block mounted on the rack for cooperating with the first upper staggered pressing block to realize staggered pressing, a second lower staggered pressing block mounted on the side, far from the firstlower staggered pressing block, of the mounting rack, and a second upper staggered pressing block mounted on the pressing arm and used for cooperating with the second lower staggered pressing block to realize staggered pressing. The middle positioning fixture is reasonable in structural design, solves the problem of difficulty positioning and clamping of two lug bases by a staggered clamping mode, guarantees the positioning precision of the lug bases by dint of the middle positioning block, is convenient for an external welding robot to automatically weld, greatly improves the production efficiency and the product quality, and is higher in automation degree.

Description

technical field [0001] The invention relates to the technical field of production and processing of automobile parts, in particular to a central positioning jig for welding the front assembly of left and right side wall inner panels of automobiles. Background technique [0002] The front assembly of the left and right side panels of the automobile is one of the important parts of the automobile. Since it is welded after splicing multiple structures, it requires high overall welding accuracy and dimensional accuracy. The middle part of the front assembly of the left and right side panels of the car includes multiple ear seats, and the distance between two adjacent ear seats is relatively close. It is also necessary to ensure the relative accuracy between the ear seats during the welding process. The traditional The processing of the middle parts of the front assembly of the left and right side inner panels mostly adopts multi-process and multi-station positioning, clamping, w...

AI Technical Summary

Problems solved by technology

The middle part of the front assembly of the left and right side panels of the car includes multiple ear seats, and the distance between two adjacent ear seats is relatively close. It is also necessary to ensure the relative accuracy between the ear seats during the welding process. The traditional The processing of the middle parts of the front assembly of the left and right side inner panels mostly adopts multi-process and multi-station positioning, clamping, welding and fixing methods. Although this method solves the problem of the large size of the front There is a problem with the forming of the middle part of the subassembly, but due to the multi-process, multi-station, and multiple clamping and positioning methods, the overall accuracy after processing is difficult to guarantee, and often fails to pass the inspection after welding the overall forming, and needs to be returned to the factory for repair , which seriously affects the efficiency of production and processing, and the ear seat is small, so it is not suitable to use the traditional clamping method

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