Conical hole forming device, car door forming die and conical hole forming method

A technology of tapered holes and punching punches, which is applied in stamping and forming of auto parts and sheet metal parts. It can solve problems such as easy burrs, unsharp cutting edges, and waste bounce back, so as to reduce debugging time and improve quality. Effect

Inactive Publication Date: 2017-09-26
BORGWARD AUTOMOTIVE CHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Prone to burrs when pierced
When punching, it is a large-angle obtuse-angle punching with an angle greater than 110 degrees. Obtuse-angle punching is prone to burrs because the cutting edge is not sharp, which affects pro

Method used

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  • Conical hole forming device, car door forming die and conical hole forming method
  • Conical hole forming device, car door forming die and conical hole forming method
  • Conical hole forming device, car door forming die and conical hole forming method

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[0029] In the drawings, the same or similar reference signs are used to indicate the same or similar elements or elements with the same or similar functions. The embodiments of the present invention will be described in detail below in conjunction with the drawings.

[0030] In the description of the present invention, the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", " The orientation or positional relationship indicated by "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the pointed device or element It must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the protection scope of the present invention.

[0031] The tapered hole forming device o...

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Abstract

The invention discloses a conical hole forming device, a car door forming die and a conical hole forming method. The conical hole forming device comprises a punching male die (3), a punching female die, a hole flanging male die and a hole flanging female die (4). The punching male die (3) and the hole flanging female die (4) are connected to a first inclined wedge (2). The punching female die and the hole flanging male die are connected to a second inclined wedge (7). The punching male die (3) and the punching female die are matched so that a through hole of a car door lock catch hole can be formed. The hole flanging male die and the hole flanging female die (4) are matched with each other so that a conical counter bored hole of the car door lock catch hole can be formed. According to the conical hole forming device, the problem that burrs are produced in the conical hole forming process can be solved, the quality of the formed conical hole is improved, and the debugging time of a fitter is shortened.

Description

technical field [0001] The invention relates to the technical field of stamping forming of sheet metal parts, in particular to the technical field of stamping forming of auto parts, in particular to a tapered hole forming device, a car door forming die and a tapered hole forming method. Background technique [0002] Mounting holes on vehicle sheet metal parts, such as door lock holes, have two forms, one is simple punching (flat hole), and the other is tapered hole. The tapered hole includes a conical counterbore part and a through hole part connected to each other, so that the head of the mounting screw can be sunk in the conical counterbore part, and the appearance quality is better. [0003] figure 1 It is a schematic diagram of a car door lock hole forming device in the prior art. figure 1 The shown car door lock button hole forming device includes a hole-turning die a and a hole-turning punch b. During forming, the punching die a and the punching die b are driven by ...

Claims

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Application Information

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IPC IPC(8): B21D28/26B21D28/34
CPCB21D28/26B21D28/34
Inventor 卢世锋
Owner BORGWARD AUTOMOTIVE CHINA CO LTD
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