Die and forming process for double-acting stamping composite liquid filling forming

Abstract

The invention discloses a die and a forming process for double-acting stamping composite liquid filling forming. The forming process comprises the following steps that 1, a lower die base is positioned, an upper die base is connected with a sliding block of pressure equipment, an ejector rod of the pressure equipment is inserted into the die to jack up a blank pressing die, the ejector rod is connected with pressurizing equipment through a hose, and an emulsion is injected into a male die through a liquid filling hole to carry out initial lubrication on the male die and a pressing edge; 2, a plate material is placed on the blank pressing die, the sliding block of the pressure equipment drives a female die to press the blank pressing die to continuously move downwards, and the ejector rod of the pressure equipment is forced to continuously retreat until the upper die base is in contact with a pressure bearing block; 3, the emulsion is injected into a liquid chamber from the liquid filling hole, the plate material is forced to leave the male die and be attached to the female die, air between the female die and the plate material is discharged through an exhaust hole, after forming iscompleted, the emulsion injection is stopped, and the emulsion flows back under the action of high pressure; and 4, the sliding block is controlled to drive the female die to move upwards, the die isopened, a closed cavity of the male die and the plate material is filled with the emulsion, vacuum is formed, and the formed plate material is taken out.

Description

technical field [0001] The invention belongs to the technical field of metal pressure processing, and in particular relates to a mold and a forming process for double-action stamping compound liquid-filled forming. Background technique [0002] Existing techniques and drawbacks: [0003] Liquid-filled forming technology is an advanced forming technology that uses a flexible force-transmitting medium to force metal forming. Because it requires a unique forming method, it can greatly improve the surface quality, forming limit, and forming accuracy of sheet metal parts. And because the forming medium is an emulsion, some parts with stamping negative angles can be formed. However, its application is often limited by sealing, and a closed space must be formed for liquid filling. [0004] The double-action stamping forming technology is to increase the movement of the blank holder in addition to the movement of the mold punch and the die for clamping. Compared with the traditi...

AI Technical Summary

Problems solved by technology

The surface quality of air intake parts is generally poor

And because the process is close to the limit performance of sheet metal forming, the sheet metal often breaks on the punch during the double-action stamping forming process, and the scrap rate is extremely high

Images