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Oblique flange hole technology of mould punching

A technology of hole turning and process, which is applied in the field of die stamping technology, can solve problems such as the size of the flanging bottom hole, the cracking of the turning hole, etc., so as to improve work efficiency, solve the problems of the size of the flanging bottom hole and the cracking of the turning hole, and save repetition Effect of tryout correction time

Inactive Publication Date: 2010-02-10
CAIHONG GRP ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an oblique hole turning process for die stamping that can effectively solve the problem of the size of the flanging bottom hole and the problem of cracking the hole, and save a lot of time for repeated mold correction.

Method used

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  • Oblique flange hole technology of mould punching
  • Oblique flange hole technology of mould punching
  • Oblique flange hole technology of mould punching

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Embodiment 1

[0020] Embodiment 1: Referring to Fig. 1, the two side holes 1 of the electron gun are inclined planes, and the following two items must be designed to stamp this product:

[0021] 1. Calculation of the pre-punched bottom hole of the inclined hole:

[0022] Expand the side hole 1 on the horizontal plane, according to the principle that the height of each point relative to the center of the circle is constant according to the volume, calculate the distance from the horizontal plane to the center of the circle by V0=V, connect all the calculated distance points, this is the bottom hole curve shape (see figure 2);

[0023] V0=volume after flanging=edge volume V1+side hole volume V2

[0024] V = expanded volume

[0025] Because: V=(π / 4)×(d3 2 -d0 2 )×t

[0026] so: d 0 = d 3 2 - 4 × V / ...

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Abstract

Disclosed is a tilted hole flanging technology of die stamping, the calculation of the tilted hole flanging pre-punched bottom hole: unfold the tilted flanging in horizontal plane, according to the principle that the volume does not change by height from each point to the circle centre, calculate the distance from the horizontal plane to the circle centre through the formula VO=V, and connect allthe calculated distance points, thus the bottom hole curve shape is formed. The design of the hole flanging force plug: in the process of the tilted hole flanging, the material is gradually unfolded with different flowability, so design the force plug by using the transitional inclined plane (R 0.8 X 8 degrees) on the force plug and make the material to gradually deform. The die set designed according to the technology of the invention effectively solves the problem that the flanging bottom hole size and the hole flanging cracks in testing mold; thus a great amount of correction time for repeatedly testing mold is saved, and the work efficiency is improved.

Description

technical field [0001] The invention relates to a die stamping process, in particular to an oblique hole turning process for die stamping. Background technique [0002] In the stamping design manual, only the process design parameters of the uniform hole turning, the calculation method of the bottom hole and the shape of the punch are included, and the process of the oblique hole turning is blank. At present, the calculation of the bottom hole of the oblique turning hole can only be done by first cutting an estimated shape with wire cutting, and then testing the edge with a simple mold, comparing the result of the trial turning with the shape of the product drawing, finding the difference, and then according to the technician's instructions Experience estimates that the shape of the bottom hole is cut out by wire cutting. For this reason, many repeated experiments are required, which increases the labor intensity of the staff, delays a lot of time, and low work efficiency. I...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D19/08B21D37/10
Inventor 吴军
Owner CAIHONG GRP ELECTRONICS CO LTD
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