Drawing die for high-tension plates and drawing technique utilizing same

Abstract

The invention relates to a drawing die for high-tension plates and a drawing technique utilizing the same, which can effectively reduce the resilience of stamped parts and increase the precision of stamped parts. The technical scheme comprises a female die and a male die, and the lower side of the female die is provided with a blank holder, the lower part of which is connected with ejector pins. The invention is characterized in that: the working surface of the male die is shaped like a T; a holding pad is arranged on the lower side of the middle of the female die; elastic elements are arranged between the holding pad and the female die; a plate is placed on the blank holder, the female die moves downwards, and part of the plate enters the channel under the male die and is reversely bent.

Description

technical field [0001] The invention relates to a drawing die for a high-tensile sheet material and a drawing process using the die. Background technique [0002] The special steel plate is gradually developed and applied in accordance with the requirements of light weight of the car body. The use of high-tensile steel plate can effectively improve the impact resistance of the car body, prevent the car from being sunken due to the impact of sand and gravel on the road during driving, and improve the performance of the car body. The safety and service life of the car. [0003] In the existing technology, such as figure 1 As shown, the plate drawing die includes a die and a punch. There is a blank holder under the die, and the lower part of the blank holder is connected to the ejector rod. This mold structure has a great influence on the forming of high-tensile steel plates. During the forming process, the die moves downward, and the ejector rod exerts a certain force on the...

AI Technical Summary

Problems solved by technology

[0003] In the existing technology, such as figure 1 As shown, the plate drawing die includes a die and a punch. There is a blank holder under the die.

During the forming process, the die moves downward, and the ejector rod exerts a certain force on the blank holder, so that the blank holder and the die jointly exert force on the sheet material to deform the material; since the gap between the die and the punch is small, The excess sheet has nowhere to go, resulting in poor plastic deformation of the material, and the stamping parts will have a large rebound, which affects the precision of the stamping parts, thus affecting the accuracy of the whole vehicle

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