Ridge line shaping and sharpening method of covering part and shaping mold thereof

Abstract

The invention relates to a covering part chine line sizing sharpening method and a sizing die thereof. The sizing method is carried out according to drawing, trimming deflashing, sizing, edge turning-side edge turning-side punching, side trimming deflashing-side punching-side sizing and other procedures. The covering part chine line sizing die comprises an upper die body and a lower die body, guide sleeves are arranged on the periphery of the upper die body, guide columns are arranged on the periphery of the upper die body and correspond to the guide sleeves, concave angle grooves are formed in chine lines, and extended chine lines extending to the external surface and matched with the concave angle grooves are arranged at the chine lines of the lower die body. By improving the structures of a cutter set, a press plate and other parts, the pressure condition of the parts on a covering part during punching is improved, the cutter set formed by integrated cutter blocks can uniformly and completely punch the covering part, a tapered limit block positioning mode of the upper die body and the lower die body is matched, the press fit accuracy of a blank holder is guaranteed, and fillet line slipping caused by the fact that the covering part is torn can be effectively prevented.

Description

technical field [0001] The invention relates to stamping die technology, equipment and related technical fields of an automobile outer cover part, in particular to a method for shaping and sharpening the ridge line of a cover part and a shaping die thereof. Background technique [0002] The competition in today's car market is very fierce, and the models launched by each automaker emerge in endlessly. Consumers' demand for cars no longer stops at the traditional appearance requirements in the past. Higher appearance quality of auto parts and individual needs have increasingly become the main reasons for people to buy passenger cars. High-end cars are favored by consumers for their streamlined appearance, sharp and tough overall feeling. And these are closely related to whether the processing data of automobile stamping die can realize the sharp edge technology. Due to the late start of domestic automobile mold design, although it has developed rapidly, there is still a big...

AI Technical Summary

Problems solved by technology

3. The forming force required for making sharp edges cannot be reached in the actual drawing process

During drawing, the material is pressed as a whole. Under the same pressure, due to the large pressure area, the pressure acting on the ridge area is small, which cannot meet the pressure requirements for protruding and shaping ridges, resulting in unqualified outer cover products.

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