Stretch parts overlapping material thickness forming process

A technology of forming process and material thickness, applied in the field of stamping, can solve problems such as breakage, and achieve the effect of avoiding breaking and continuous realization.

Active Publication Date: 2022-05-24
苏州铭峰精密机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But the biggest problem here is that the material itself at the 12th place of the reverse fold has been deformed by 180°, and the outer material is already very thin, and it is easy to break when it is flared again.

Method used

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  • Stretch parts overlapping material thickness forming process
  • Stretch parts overlapping material thickness forming process
  • Stretch parts overlapping material thickness forming process

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Experimental program
Comparison scheme
Effect test

Embodiment

[0020] like image 3 As shown in the present invention, a stretched piece overlapping material thickness forming process, the steps sequentially include:

[0021] ①Stretching: The sheet material is stretched and transformed into a rotating body structure with a large diameter of 15 in the lower part and a small diameter of 13 in the upper part;

[0022] ②Bulging: expand the material of the lower part 15 close to the upper part 13 from the inside to the outside to form a middle part 14 with a larger diameter than the lower part 15;

[0023] ③Reverse drawing: The middle part 14 is folded back to form the overlapping material 11 , and the upper part 13 is retracted into the center of the overlapping material 11 .

[0024] This process uses the method of first bulging and then reverse pulling to form the overlapping material 11 of the enlarged structure. Because the deformation of the material is small by first bulging, the part that needs to be folded is only slightly expanded, ...

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PUM

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Abstract

The invention belongs to the field of stamping technology, and relates to a forming process for overlapping material thickness of stretched parts. The steps include: ① Stretching: Stretching and deforming the sheet material into a rotating body structure with a large lower diameter and a small upper diameter; ② Bulging : Expand the lower part close to the upper part from the inside to the outside to form a middle part with a larger diameter than the lower part; ③ Reverse pull: Fold the middle part back to form an overlapping material, and let the upper part shrink into the center of the overlapping material. This process uses the method of bulging first and then reverse pulling to form the overlapping material part of the enlarged structure, which avoids the situation of breaking and realizes the continuous processing of products.

Description

technical field [0001] The invention relates to the technical field of stamping, in particular to a process for forming an overlapping material thickness of a stretched part. Background technique [0002] like figure 1 Shown is a structural drawing of a cylindrical product 1c made of overlapping stock 11 . The overlapping material 11 is obtained by folding back. In the past, the process adopted in the mold trial was as follows: figure 2 As shown in the figure, the material is first stretched into a stretching piece 1a with a smaller diameter, and then the upper part is folded to form a folded piece 1b to form a folded edge 12, and then the overlapped material 11 is enlarged. The structure of the product 1c is formed. But the biggest problem here is that the material at the reverse folded edge 12 itself has been deformed by 180°, and the outer material is already very thin, and it is very easy to break when the flaring is performed. [0003] Therefore, it is necessary t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D51/10B21D22/28B21D22/24B21D39/20
CPCB21D35/002
Inventor 顾大明
Owner 苏州铭峰精密机械有限公司
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