Damping and anti-cracking stamping die

Abstract

The invention discloses a damping and anti-cracking stamping die, which comprises an upper plate and a stripper plate, wherein a punching device is arranged at the lower end of the upper plate; the punching device comprises a plurality of punching blocks, and the plurality of punching blocks are sequentially installed from top to bottom; the outer diameters of the plurality of punching blocks aregradually decreased from top to bottom; the outer edge of the lower surface of each punching block is wrapped with a hard alloy sleeve; compared with the prior art, the damping and anti-cracking stamping die has the beneficial effects that when the punching device is used for pressing and punching, a small hole can be punched by the punching block with the smallest outer diameter, and then the punching blocks with the gradually increased outer diameters sequentially act on a workpiece, so that the aperture is gradually increased, and thus the situation that the processing quality is affected by a crack in the hole due to the fact that the shearing force during punching is large after the larger hole is punched at one time can be prevented; and the hardness of the hard alloy sleeve is large, the section can be ensured to be tidy during punching, and meanwhile, the service life of the hard alloy sleeve is long.

Description

technical field [0001] The invention relates to the technical field of stamping dies, in particular to a shock-absorbing and crack-proof stamping die. Background technique [0002] Stamping die is a special process equipment for processing materials (metal or non-metal) into parts (or semi-finished products) in cold stamping processing. It is called cold stamping die (commonly known as cold stamping die). Stamping is at room temperature, A pressure processing method that uses a mold installed on a press to apply pressure to the material to cause separation or plastic deformation to obtain the required parts. In the punching process of parts, stamping dies are often used, but the current When the stamping die punches a hole with a large inner diameter, due to the large shear force during punching, it is often easy to cause certain cracks in the hole, which affects the processing quality, and the current die treats the workpiece when punching Insufficient fixation and vibrati...

AI Technical Summary

Problems solved by technology

[0002] Stamping die is a special process equipment for processing materials (metal or non-metal) into parts (or semi-finished products) in cold stamping processing. It is called cold stamping die (commonly known as cold stamping die). Stamping is at room temperature. A pressure processing method that uses a mold installed on a press to apply pressure to the material to cause separation or plastic deformation to obtain the required parts. In the punching process of parts, stamping molds are often used, but the current When the stamping die punches a hole with a large inner diameter, due to the large shear force during punching, it is often easy to cause certain cracks in the hole, which affects the processing quality, and the current die treats the workpiece when punching Insufficient fixation and the vibration of the workpiece during processing will easily cause processing misalignment, thus affecting the processing quality. For this reason, we propose a shock-absorbing and crack-resistant stamping die

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