Method for manufacturing CH hole of automobile panel

Abstract

The invention discloses a method for manufacturing a CH hole of an automobile panel including the following steps: 1) punching a drawing member (7), sliders on a press not returning after the press stroke is to the end, keeping a drawing terrace die (2) and a drawing female die (1) close, and profiles of the drawing terrace die (2) and the drawing female die (1) being in compact states; 2) driving a cylinder assembly (6) in the CH hole punching terrace die mechanism by using an air source on the press, and the cylinder assembly (6) pushing a CH punching terrace die (4) in the CH hole punching terrace die mechanism to finish the CH hole manufacture work; 3) the cylinder assembly (6) returning, the CH hole punching terrace die (4) returning, finally the sliders on the press returning, and drawing the drawing member (7). By adopting the inventive method, the device cannot be deformed during punching; and the secondary location problem of a drawing component caused by adopting a conventional method does not exist, and the manufactured CH hole has excellent position consistency.

Description

technical field [0001] The invention belongs to the technical field of mechanical manufacturing process equipment, and in particular relates to a method for manufacturing a CH hole of an automobile cover. Background technique [0002] The CH hole refers to the process hole used for mold research. When developing the mold, the CH hole is used to locate the part, which can ensure the consistency of the positioning of the stamping die before and after, so as to achieve the purpose of ensuring the accuracy of the part. The CH hole is not a functional hole on the final product. After the mold is debugged and stabilized, the CH hole needs to be plugged to prevent leaving traces on the part and affecting the surface quality of the automobile outer cover. [0003] At present, the conventional manufacturing method of CH hole adopted by stamping die manufacturers is as follows: [0004] When the mold is manufactured, the installation position of the punching punch is set on the draw...

AI Technical Summary

Problems solved by technology

[0007] When punching the CH hole, the surrounding material of the CH hole is not pressed tightly, resulting in deformation of the punched CH hole;

[0008] Since the drawn part is punched out first, after the punching punch is installed, the drawn part is put back into the drawing die to punch out the CH hole, which will cause the inconsistency of the positioning of the part when it is put in and the rebound of the part. The problem of poor consistency of the CH hole position of each part

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