Outer plate stamping process

Abstract

The invention discloses an outer plate stamping process. The outer plate stamping process comprises the following steps: S01: drawing: drawing a base material into a box-shaped component; S02: trimming and punching: adopting non-circumferential trimming, reserving a convex lug on a component, and punching a positioning hole in the convex lug; S03: laterally flanging and laterally trimming: putting a component processed and molded in the step S02 onto the convex mould, and selecting a cylindrical dowel pin for a lower mould base, carrying out left-right-end lateral flanging and front-end secondary trimming on the primary of the component after the positioning hole and the cylindrical dowel pin are inserted and positioned; and S04: laterally flanging and laterally trimming: carrying out front-end secondary lateral flanging after the cylindrical dowel pin penetrates through a cutter block of a low-mould trimming concave mould and is inserted and positioned with the positioning hole, and cutting off the convex lug. In this way, the stamping process increases the steps of reserving the convex plug and punching the positioning hole in the convex leg, so that component positioning in subsequent steps is guaranteed, and the positioning reliability is improved.

Description

technical field [0001] The invention relates to the technical field of auto parts processing, in particular to an outer plate stamping process. Background technique [0002] Automotive stamping parts are divided into outer plate parts and inner plate parts. The outer plate parts are also called cover parts, which have the characteristics of thin material, complex shape, large structural size and high surface quality requirements. The quality of the covering directly affects the quality of the entire body-in-white. Any tiny defect will cause diffuse reflection of light after painting and damage the appearance of the appearance. Any deviation in dimensional accuracy will affect the DTS of the whole vehicle value); therefore, the process design of the cover, the die structure design and the die manufacturing process are all specific. Such as figure 1 As shown, the stamping process of the outer plate in the prior art includes: OP10 drawing, which stretches the base material ou...

AI Technical Summary

Problems solved by technology

However, the prior art OP20 and subsequent stamping process only rely on the stamping part itself for positioning, while the outer panel of the engine cover is a shallow drawn part, and the profile is simple, so reliable positioning cannot be achieved, resulting in the quality and dimensional accuracy of the stamping parts cannot be guaranteed

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