Body side wall outer panel drawing die and drawing method

Abstract

The invention discloses a vehicle body side outer plate drawing mold. The vehicle body side outer plate drawing mold comprises an upper mold body, a lower mold base and a convex mold, and further comprises a compensation blank holder arranged on the upper mold body, an inner blank holder movably arranged in the convex mold and matched with the compensation blank holder, and an outer blank holder movably arranged on the outer side of the convex mold and used for positioning a plate with the inner blank holder. The vehicle body side outer plate drawing mold is provided with the compensation blank holder for matching with the inner blank holder and the outer blank holder to control the inner blank holder and the outer blank holder to eliminate a depth section difference, so that the molding corrugation in closing of pressing material surfaces is eliminated, such defects as pits and collapse after molding of the plate are eliminated, and the drawing molding quality of a vehicle body side outer plate is improved. The invention further discloses a drawing method of the vehicle body side outer plate.

Description

technical field [0001] The invention belongs to the field of cold stamping die equipment, in particular, the invention relates to a drawing die and a drawing method for a body side wall outer panel. Background technique [0002] The side panel of a car is the most complex covering part of the car body. The appearance quality of the side panel directly affects the appearance quality of the vehicle. The appearance quality of the side panel is mainly determined by drawing. very important. Due to the depth difference between the door opening flange surface and the threshold flange surface on the side wall outer panel, in order to ensure the quality of the panel, the door opening flange surface and the threshold flange surface must be drawn in place according to the product during drawing. If the drawn surface According to the depth of the flange surface of the threshold, there is no depth difference, and the inside of the door opening is stretched and cracked, which cannot be f...

AI Technical Summary

Problems solved by technology

Due to the depth difference between the door opening flange surface and the threshold flange surface on the side wall outer panel, in order to ensure the quality of the panel, the door opening flange surface and the threshold flange surface must be drawn in place according to the product during drawing. If the drawn surface According to the depth of the flange surface of the threshold, there is no depth difference, and the inside of the door opening is stretched and cracked, so it cannot be formed

At present, the inner binder surface of the door opening and the outer binder surface of the sill side are the door opening flange surface and the threshold flange surface respectively, so that when the binder surface is closed and formed, there is a depth between the inner binder surface of the door opening and the outer binder surface of the threshold side The level difference causes wrinkles in the closed forming of the binder surface. After the sheet is formed, defects such as pits and collapses appear on the appearance surface, which seriously affects the drawing quality of the sheet, thereby affecting the appearance quality of the car body.

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