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Die for one-time forming of two-step automobile sheet metal part, and molding method

A one-off technology for automotive sheet metal parts, used in forming tools, manufacturing tools, metal processing equipment, etc., can solve problems such as scrap, fracture, sheet metal stretching and thinning, and achieve the effect of improving stability

Inactive Publication Date: 2019-07-05
北京中益宏宇工贸有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the bending and forming process of the sheet metal, at least one side is a free side without constraints, so that the deformation allowance of the sheet metal can be supplemented from the free side of the sheet metal to the deformed part, otherwise the sheet metal will use the punch and the die to cooperate During the stamping and bending process, because the sheet metal in the deformed part cannot be replenished, the sheet metal in the deformed part will be stretched, thinned or even broken, so that the thickness of the stamped sheet metal is inconsistent or even scrapped

Method used

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  • Die for one-time forming of two-step automobile sheet metal part, and molding method
  • Die for one-time forming of two-step automobile sheet metal part, and molding method
  • Die for one-time forming of two-step automobile sheet metal part, and molding method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Such as figure 1 As shown, the mold for one-time molding of two-step automobile sheet metal parts includes a punch 1 and a die 2, wherein the die 2 includes a fixed die 21, a movable die 22 and a movable cylinder 23, and the fixed die 21 and the movable die The template 22 is spliced ​​along a straight line and the splicing line is parallel to the bending direction of the sheet metal. The splicing line of the fixed concave template 21 and the movable concave template 22 is located below the lowermost plane of the punch 1, and the movable cylinder 23 is located below the movable concave template 22 and The movable concave template 22 can be driven to move upwards. First start the punch 1 to press down and cooperate with the fixed concave template 21 to carry out a stamping and deep drawing of the sheet metal. At this time, both sides of the deformation part of the sheet metal between the punch 1 and the fixed concave template 21 are free sides, and the sheet metal The m...

Embodiment 2

[0030] A method for forming an automobile sheet metal part, comprising the following steps:

[0031] S0. Apply stretching oil to the surface of the sheet metal.

[0032] S1. The sheet metal is placed on the top of the fixed concave template 21;

[0033] S2. Depress the punch 1 and cooperate with the fixed concave template 21 to bend the sheet metal once;

[0034] S3. Start the movable cylinder 23 to drive the movable concave template 22 to move upwards and cooperate with the punch 1 to bend the sheet metal again.

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PUM

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Abstract

The invention relates to an automobile sheet metal part processing die, in particular to a die for one-time forming of a two-step automobile sheet metal part, and a molding method. The die comprises amale die and a female die; the both sides of the male die are in a two-step shape, and the female die includes a fixed concave template and a movable concave template; the fixed concave template andthe movable concave template are spliced in a straight line, and the splicing line is parallel with the bending direction of sheet metal; the splicing line between the fixed concave template and the movable concave template is located below the bottom end plane of the male die, and a movable cylinder is arranged below the movable concave template fixedly. Firstly, the male die is pressed to cooperate with the fixed concave template for primary stamping and deep drawing forming, and then a movable cylinder is started for driving the movable concave template to move upwards and cooperate with the male die for secondary drawing forming; and the effect that the sheet metal of which the both sides are in the two-step shape can be formed in one time is achieved.

Description

technical field [0001] The invention relates to a mold for processing automobile sheet metal parts, in particular to a mold and a molding method for forming two-step automobile sheet metal parts at one time. Background technique [0002] The bending and forming of automobile sheet metal parts is essential in the sheet metal processing process. During the bending and forming process of the sheet metal, at least one side is a free side without constraints, so that the deformation allowance of the sheet metal can be supplemented from the free side of the sheet metal to the deformed part, otherwise the sheet metal will use the punch and the die to cooperate In the process of stamping and bending, because the sheet metal in the deformed part cannot be replenished, the sheet metal in the deformed part will be stretched, thinned or even broken. In this way, the thickness of the stamped sheet metal will be inconsistent or even scrapped. A typical example is the sheet metal forming ...

Claims

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Application Information

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IPC IPC(8): B21D31/00B21D37/10B21D37/12
CPCB21D31/005B21D37/10B21D37/12
Inventor 王海宾
Owner 北京中益宏宇工贸有限公司