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Technique for flanging edge rolling of cold stamping die

A process method and cold stamping technology, which is applied in the field of cold stamping die flanging and rounding, can solve the problems of impracticality, increased filling of punches, false scratches, etc., and achieve the effects of cost saving, easy maintenance, and improved safety performance

Inactive Publication Date: 2020-11-20
CHINA FIRST AUTOMOBILE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The edges of the existing part of the leaking inner panels are very sharp, not only unsightly, but also very likely to cause accidental scratches
In order to solve this kind of problem, the edge part of the sheet can be rounded, because the flanging die used for inward flanging is completely wrapped around the workpiece, and the short side is close to closed after forming, so The inside of the short side cannot add a filling punch like a normal mold, but such a short side needs to add a filling punch like a normal mold, so for a normal mold, the inward curling completed by the prior art is impractical

Method used

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  • Technique for flanging edge rolling of cold stamping die
  • Technique for flanging edge rolling of cold stamping die
  • Technique for flanging edge rolling of cold stamping die

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Embodiment Construction

[0030] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.

[0031] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two ...

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Abstract

The invention belongs to the technical field of automobile part manufacturing and particularly relates to a technique for flanging edge rolling of a cold stamping die. The technique comprises three steps of shaping, carrying out upward flanging, and carrying out downward shaping. In the shaping step, a workpiece is upwards to form flanging; in the upward flanging step, the workpiece is turned up to form a preliminary rolled edge; and in the downward shaping step, the workpiece is further rolled inwards to form a demanded rolled edge. With adoption of the technique, flanging edge rolling moulding is realized in a common stamping die, and a dedicated die is not needed.

Description

technical field [0001] The invention belongs to the technical field of automobile parts manufacturing, and in particular relates to a process method for flanging and rounding of a cold stamping die. Background technique [0002] With the rapid development of automobile technology, consumers have higher requirements for the overall comfort and shape of the car. Not only the outer cover parts of the car must be beautiful, but also the appearance quality of the inner panel parts needs to be guaranteed. [0003] The edges of the existing part of the leaking inner panels are very sharp, which is not only unsightly, but also very likely to cause accidental scratches. In order to solve this kind of problem, the edge part of the sheet can be rounded, because the flanging die used for inward flanging is completely wrapped around the workpiece, and the short side is close to closed after forming, so The inside of the short side cannot add a filling punch like a normal mold, but such ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D19/08B21D37/10
CPCB21D19/08B21D37/10
Inventor 王济泽张永亮崔爱豹王双柱任伟
Owner CHINA FIRST AUTOMOBILE
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