Method for eliminating plate shape component partial drape with dent area

Abstract

The invention relates to a method for eliminating partial wrinkles of a plate part with a depressed area. For the plate part with a depressed area, the method comprises a step that the plate part is punched by a mould, which comprises an convex mould, a concave mould and a binder ring, the convex mould and the binder ring have a draw bar, wherein, the height of the draw bar corresponding to the position of the depressed area to-be-molded is higher than the height of the draw bar at other positions; the molded surfaces of the convex mould and the concave mould used for forming two drawing side surfaces of the plate part are at the same height. The method also comprises a shaping process used for shaping one of the side surfaces of the draw molded plate part, thus leading two side surfaces to have different heights. The method provided by the invention can smooth the surfaces of the processed plate-work with the depressed area, and can reduce reject ratio and mould abrasion.

Description

technical field [0001] The invention relates to a method for eliminating wrinkling of a drawn part, especially a method for eliminating local wrinkles of a plate-like product with a concave area. Background technique [0002] The application range of stamping processing is very wide, and it occupies a very important position in the production of automobiles, tractors, motors, electrical appliances and daily necessities. With the rapid development of industries such as automobiles and household appliances, stamping technology has a wide range of development space. Drawing is to use a drawing die to make a flat blank into an open hollow part. Drawing is one of the most widely used processes in stamping production, and drawing is mainly used for processing complex shapes. [0003] Plate-shaped articles with recessed areas, such as figure 1 The "N" shape shown is a complex shape. This plate-like product includes at least two surfaces that are not on the same plane, and the at...

AI Technical Summary

Problems solved by technology

However, these methods are not very effective for eliminating the wrinkles that occur in the drawing process of the plate-shaped parts with concave areas. The gap value between the die and the die is 1 times the material thickness, once wrinkles are generated during the drawing process (the gap value required by the folds must be greater than 1 times the material thickness), it will squeeze the punch and die to expand the gap value , the result is that the punch and die in this area will form a concave area similar to the shape of the folds, so the wear on the mold is also greater

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