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A Variable Grinding Method for Blank Holder of Automobile Drawing Die

A technology for drawing dies and blank holders, which is applied in the field of variable grinding method for blank holders of automobile drawing dies, and can solve problems such as parts rework, cracking, and increased production input costs

Active Publication Date: 2022-06-17
刁建兵
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] During the manufacturing process of automobile molds, when the stamping equipment is replaced or the mold is transferred to another factory, due to the difference in the precision of the stamping equipment, the coloring of the mold pressing surface will change, which will directly affect the stability of mold debugging and mass production. During the process of deep-drawing change, the inner pressing material surface always maintains the pressing state, but in the drawing process, the outer pressing material surface is more tightly pressed than the inner pressing material surface, and it is easy to misjudge the drawn part during the debugging process The cause of the defects is that during the debugging and production process, the parts are prone to wrinkles, dark cracks, cracks and other defects. The stability of the mold is poor, which affects the production efficiency, causing the parts to be repaired and the parts to be scrapped, thus increasing production input cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A variable grinding method for a blank holder ring of an automobile drawing die, comprising the following steps:

[0032] (1) Adjust the coloring rate of the balance block to color all the balance blocks at the same time;

[0033] (2) Put the lead wire or tin wire on the inner and outer crimping rings, and press it with a press for a return trip;

[0034] (3) Measure the thickness of the corresponding lead wire or tin wire, and record the values ​​of the inner blank holder and the holder;

[0035] (4) Adjust the material thickness relationship between the balance block and the pressing surface, so that the balance block of the upper die and the balance block of the lower die can abut when the mold is closed;

[0036] (5) The closing height of the press is adjusted to the height where the pressure can be established, the drawbead is formed, and the material does not flow;

[0037] (6) Brush the colorant on the balance block of the upper die, put the sheet material on t...

Embodiment 2

[0055] A variable grinding method for a blank holder ring of an automobile drawing die, comprising the following steps:

[0056] (1) Adjust the coloring rate of the balance block to color all the balance blocks at the same time;

[0057] (2) Put lead wire or tin wire on the inner and outer crimping rings, and the press presses for a return stroke;

[0058] (3) Measure the thickness of lead wire or tin wire, and record the value of inner blank holder and blank holder;

[0059] (4) Adjust the material thickness relationship between the balance block and the pressing surface;

[0060] (5) The closing height of the press is adjusted to the height where the pressure can be established, the drawbead is formed, and the material does not flow;

[0061] (6) Brush the colorant on the balance block of the upper die, put the sheet material on the blank holder, and press the press for one return;

[0062] (7) Check the coloring of the balance block, and check the wrinkling of the presse...

Embodiment 3

[0079] A variable grinding method for a blank holder ring of an automobile drawing die, comprising the following steps:

[0080] (1) Adjust the coloring rate of the balance block to color all the balance blocks at the same time;

[0081] (2) Put lead wire or tin wire on the inner and outer crimping rings, and the press presses for a return stroke;

[0082] (3) Measure the thickness of lead wire or tin wire, and record the value of inner blank holder and blank holder;

[0083] (4) Adjust the material thickness relationship between the balance block and the pressing surface;

[0084] (5) The closing height of the press is adjusted to the height where the pressure can be established, the drawbead is formed, and the material does not flow;

[0085] (6) Brush the colorant on the balance block of the upper die, put the sheet material on the blank holder, and press the press for one return;

[0086] (7) Check the coloring of the balance block, and check the wrinkling of the presse...

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Abstract

The variable grinding method for blank holder rings of automobile drawing dies according to the present invention can ensure the precision of the dies after numerical control machining; can eliminate the accumulated errors of numerical control and assembly processing; can avoid repeated research and adjustment of dies, and shorten the manufacturing and processing time. Debugging cycle; after the mold is transferred, it is avoided to repeatedly develop and debug the mold; it can improve the production efficiency of the mold; it can increase the service life of the mold.

Description

technical field [0001] The invention relates to the technical field of automobile production, in particular to a variable grinding method for a blank holder ring of an automobile drawing die. Background technique [0002] After the stamping equipment is replaced in the manufacturing process of the automobile mold or the mold is transferred to another factory, due to the difference in the precision of the stamping equipment, the coloring of the pressing surface of the mold will change, which directly affects the stability of the mold debugging and mass production. During the process of deep drawing, the inner pressing surface always keeps the pressing state, but during the deep drawing process, the outer pressing surface is pressed more tightly than the inner pressing surface, and it is easy to misjudge the drawn part during the debugging process. The cause of the defect, the drawing of the parts during debugging and production is prone to wrinkles, dark cracks, cracks and ot...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D37/20B24B37/00B21D22/22
CPCB21D37/20B24B37/00B21D22/22
Inventor 刁建兵唐士东姜长富赵有玲
Owner 刁建兵
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