Engine cover punching and liquid filling combined forming technology die and engine cover forming method

Abstract

The invention discloses an engine cover punching and liquid filling combined forming technology die. The engine cover punching and liquid filling combined forming technology die comprises a female die, a male die and a blank holder. A pressing area and a forming area are arranged on the female die, and the forming area is located in the middle of the pressing material and is concaved and sunk inwards relative to the pressing area. The forming area is provided with a circumferential circle liquid filling groove, a first extrusion formed product face, a first liquid filling formed product face and a first waste technology supplementing face. The male die is provided with a second extrusion formed product face, a second liquid filling formed product face and a second waste face. The first extrusion formed product face and the second extrusion formed product face can be in contact extrusion, the first liquid filling formed product face is opposite to the second liquid filling formed product face in position, and the first waste technology supplementing face is opposite to the second waste face in position. By means of the engine cover punching and liquid filling combined forming technology die, liquid filling forming and punching forming can be finished in the same procedure at a time, the local forming quality of components can be improved, and the requirement of liquid filling forming for the equipment tonnage can be lowered, forming passes are reduced, energy is saved, and the production efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of car bodies, in particular to a mold for a hair cover stamping and liquid filling combined molding process and a hair cover forming method. Background technique [0002] The weight of the body accounts for about 40% of the total mass of the car. For the lightweight of the vehicle, the weight of the body plays a pivotal role. The application of new materials is one of the main ways to achieve weight reduction, such as aluminum plates and high-strength steel materials. Applications. [0003] In the prior art, new materials such as aluminum plate and high-strength steel are processed by cold punching and drawing dies. The cold punching and drawing dies of the prior art are as follows: figure 1 As shown, the cold drawing die mainly includes three parts: an upper die base 101 , a blank holder 102 and a lower die base 103 . The forming of this kind of drawing die mainly depends on the forming of the punch, and...

AI Technical Summary

Problems solved by technology

[0005] The material and performance of aluminum plate are quite different from those of steel plate. figure 1 The surface quality of the aluminum alloy parts processed by the cold stamping die shown is poor, and the yield is low, which cannot meet the requirements of high precision, high reliability, high efficiency and low defect manufacturing of body parts

And as figure 2 The liquid-filled molding mold shown requires a large pressure to complete the small R-angle molding on the part, which requires a high pressure for the tonnage of the equipment, increasing the difficulty of manufacturing, and high energy consumption and equipment costs.

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