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A kind of part deep drawing forming method and forming die

A technology for forming molds and parts, applied in the field of deep drawing of parts and forming molds, can solve the problem of high processing cost, achieve the effects of low cost, uniform force, and shorten the processing process of parts

Active Publication Date: 2022-07-05
PINGGAO GRP +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for deep drawing and forming of parts, so as to solve the problem that in the prior art, when the spinning process is used to process the valgus edge of the intermediate shield used in the vacuum interrupter, multiple pairs of molds need to be processed through multiple passes. Forming leads to the technical problem of higher processing costs; meanwhile, the present invention also provides a part drawing forming die for implementing the above forming method

Method used

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  • A kind of part deep drawing forming method and forming die
  • A kind of part deep drawing forming method and forming die
  • A kind of part deep drawing forming method and forming die

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] like Figure 1 to Figure 3 As shown, the forming die in this embodiment is used for deep drawing and forming the intermediate shielding cover of the vacuum interrupter, and the intermediate shielding cover is an existing product, which will not be repeated here. The forming die in this embodiment is specifically used for forming to obtain the following image 3 As shown in the semi-finished product, the intermediate shield can be obtained by performing subsequent punching and crimping processing on the basis of the semi-finished product.

[0042] The forming die specifically includes an upper blank holder 2, a back pressure punch 1, a lower punch 6, a lower die 4 and a particle medium 3, wherein the upper blank holder 2 and the back pressure punch 1 are located on the upper side, and the lower punch is located on the upper side. 6 and the lower die 4 are located on the lower side. When in use, the lower concave die 4 is fixed on the corresponding molding equipment or ...

specific Embodiment 2

[0058] The main difference from Example 1 is that the mold in Example 1 is used to process the intermediate shield, the lower punch is cylindrical, and the forward stretching section is cylindrical. The top of the punch is hemispherical, which is used for cooperating with the back pressure punch to obtain a hemispherical forward drawing section.

[0059] Of course, in other embodiments, the lower punch can also be a truncated circular frustum or a truncated cone structure, and the specific shape can be determined according to the part to be processed.

specific Embodiment 3

[0061] The main difference from Embodiment 1 is that the reverse drawing groove of the lower die in Embodiment 1 is an annular groove, and the outer groove wall of the annular groove is an inclined groove wall, so as to be different from the annular outer groove of the shielding cover. Correspondingly to the turning edge, in this embodiment, the outer groove wall of the reverse deep drawing groove is a vertical groove wall, so as to form a rectangular decoupling strand.

[0062] Of course, in other embodiments, the reverse drawing groove on the lower die can also be of other shapes, such as V-shape or W-shape, as long as it is adapted to the shape of the eversion edge of the part to be formed. The plate is forced to deform by the particle medium to abut against the groove wall of the reverse drawing groove to form a correspondingly shaped eversion edge.

[0063] The specific embodiment of the part deep drawing method provided by the present invention:

[0064] The forming met...

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Abstract

The invention relates to a method for deep drawing and forming of parts and a forming die. The forming method comprises the following steps: step 1, preparing for clamping, and clamping a plate at an initial position between a lower punch and an upper blank holder; step 2, forwarding In the deep drawing process, the upward speed of the lower punch is greater than the upward speed of the back pressure punch, and the plate is forced to deform and wrap outside the lower punch through the particle medium, and the plate is forward-drawn to obtain the forward-drawing section on the part; step 3, reverse In the deep drawing process, the downward speed of the back pressure punch is greater than the downward speed of the lower punch, and the plate is forced to deform through the particle medium to adhere to the groove wall of the reverse drawing groove, and the plate is reverse drawn to obtain the eversion edge on the part. . When processing the shielding cover, select the lower punch with the appropriate shape, and the barrel section and the valgus edge of the shielding cover can be processed by forward and reverse deep drawing. Effectively reduce costs, simplify processing procedures, and facilitate the forming of parts.

Description

technical field [0001] The invention relates to a method for deep drawing and forming of parts and a forming die. Background technique [0002] The main function of the shielding cover system in the vacuum interrupter is to improve the electric field distribution inside the vacuum interrupter, make the electric field distribution uniform, protect the inner wall of the insulating shell, and improve the insulation level. Stamping or spinning process. [0003] The general shielding cover is mostly processed by spinning. For example, the spinning forming process of the ultra-high pressure shielding cover disclosed in the Chinese invention patent application with the authorization announcement number CN103522021B uses a digitally controlled spinning machine to integrate the sheet material into a shielding. The cover mainly includes the following steps: blanking, preliminary spinning, turning inner hole, stretching and spinning, first flanging, trimming, second flanging, polishin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D22/20B21D37/10
CPCB21D22/20B21D37/10
Inventor 李小钊薛从军王小焕郝留成曹秒艳庞世缘赵芳帅刘世柏李锟李凯苗晓军胡晗曹磊白丽娜刘心悦亓春伟赵东辉齐大翠王宇浩段方维刘苪彤
Owner PINGGAO GRP
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