Design method of die profile of automobile covering part characteristic line area

Abstract

The invention provides a design method of a die profile of an automobile covering part characteristic line area. The design method comprises the step that a punch-cum-blanking die machining fillet radius R+ is determined according to the fillet radius R of an automobile covering part characteristic line, wherein the punch-cum-blanking die machining fillet radius R+ is equal 0 mm when R is smaller than or equal to 3 mm, is equal to 1.5 mm when R is larger than 3 mm and smaller than 4 mm, and is equal to R-2 mm when R is larger than or equal to 4 mm. According to the design method of the die profile of the automobile covering part characteristic line area, characteristic line precision and covering part monolithic forming quality can be ensured, meanwhile, the strength and difficulty of later-period debugging carried out by a bench worker can be greatly lowered, and the whole die manufacturing period is shortened.

Description

technical field [0001] The invention relates to a method for designing a mold profile of an automobile outer cover, in particular to a design method for designing a mold profile of a characteristic line region of an automobile outer cover. Background technique [0002] In today's automobile manufacturing field, in order to cater to the aesthetics of automobile styling by mainstream consumer groups, the rounded corners of the characteristic lines of automobile outer panels are generally designed to be smaller. To ensure the dimensional accuracy of the small fillet feature line and the overall forming quality of the outer cover at the same time, it will undoubtedly greatly increase the requirements for the fine design of the automobile stamping die surface, the manufacturing accuracy of the die and the level of fitter debugging. Among them, the fine design of the mold surface is a cutting-edge link, which has a fundamental impact on the quality of subsequent mold processing an...

AI Technical Summary

Problems solved by technology

[0003] At present, in terms of forming the characteristic lines of automobile outer panels, major domestic automobile manufacturers are developing the technology of sharpening the mold surface of characteristic lines, but they have not yet formed a unified understanding with satisfactory results, with a lot of uncertainty. The final forming quality of the characteristic line still largely depends on the fitter's debugging level

And after trying various characteristic line schemes, it is found that in the process of production and debugging of automobile outer panels, various problems such as unclear characteristic lines and insufficient sharpness of characteristic lines often occur, which often increase the difficulty of mold debugging and prolong the mold manufacturing cycle , which increases the manufacturing cost and adds difficulty to the progress of the whole project

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