Automobile fender side flanging, side shaping and side punching composite die

Abstract

The invention relates to an automobile fender side flanging, side shaping and side punching composite die. The automobile fender side flanging, side shaping and side punching composite die comprises a double-sliding-block primary-secondary wedge mechanism, a double-sliding-block suspension wedge mechanism and a double-drive suspension wedge mechanism, and the double-sliding-block primary-secondary wedge mechanism is used for achieving same-sequence forming of side flanging shaping and side punching of a fender engine hood lap joint part; the double-sliding-block suspension wedge mechanism is used, and one-time forming of large-angle and long flange negative-angle flanging of the front door lap joint part of the fender is achieved; the same-sequence forming of side flanging shaping and side punching of the lap joint part of the front bumper of the fender is realized by applying the double-drive suspension wedge mechanism; and the three special wedge mechanisms are comprehensively applied, so that the fender flanging and sizing die completes more process contents, and synchronization is realized.

Description

technical field [0001] The invention relates to a mold for processing auto parts, in particular to a composite mold for side flanging, side shaping, and side punching of an automobile fender. Background technique [0002] As the most important processing method of automobile panels at present, stamping plays an indispensable role in the entire automobile manufacturing chain, and the realization of stamping processing is inseparable from stamping dies. Due to the complex structure, large outline size and high quality requirements of automobile panels, it is difficult to achieve a high degree of integration of process content in the stamping dies used to produce automotive panels. Taking the top cover, floor, fender, side wall outer panel and four-door and two-cover auto OEM conventional self-made stamping parts as an example, the stamping dies of these auto cover parts are basically based on four processes, and some automobiles with great difficulty in forming The cover even...

AI Technical Summary

Problems solved by technology

[0005] (1) The cost of stamping dies used to produce automobile fenders is relatively high. Generally, the left and right parts are co-molded. Taking the fenders of conventional small and medium-sized cars as an example, the overall size of the mold is 4000mm×2100mm×1190mm , the mass is 23,600KG, and the R&D, design, and manufacturing costs of one pair of punching or flanging molds are 1.8 million yuan, which leads to high mold development costs;

[0006] (2) The size and shape of the mold are large and the weight is heavy, so that the car fender needs to occupy more space to store the stamping mold, which increases the operation and maintenance cost of the stamping workshop;

[0007] (3) During the production process of automobile fenders, the lifting, installation and mold change time of stamping dies are longer, which reduces production efficiency;

[0008] (4) The stamping processing cost of the automobile fender is increased. Taking the automobile fender with an annual output of 200,000 as an example, the equipment used for punching and flanging is usually a 10,000KN mechanical press, and the cost per stroke is 16 RMB, the additional production cost of automobile fenders needs to be increased by RMB 3.6 million per year

However, due to the failure to further compound the stamping process, the above-mentioned research on the process integration of the fender stamping die stopped at the four processes

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