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A Stamping Die and a Method for Testing Its Strain Forming Capability

A stamping die and capability technology, applied in the field of stamping die and strain forming capability testing, can solve problems such as inability to detect material properties

Active Publication Date: 2019-01-01
BEIJING ELECTRIC VEHICLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above technical problems, the present invention provides a stamping die and a method for detecting the strain forming ability, which solves the problem that the material performance cannot be detected under the multi-strain state in the prior art

Method used

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  • A Stamping Die and a Method for Testing Its Strain Forming Capability
  • A Stamping Die and a Method for Testing Its Strain Forming Capability
  • A Stamping Die and a Method for Testing Its Strain Forming Capability

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Embodiment 1

[0032] Such as Figure 1 to Figure 4 As shown, the embodiment of the present invention provides a stamping die, including: a die 1 , a blank holder 2 arranged on the die 1 , and a punch 3 matched with the die 1 .

[0033] Wherein, the concave mold 1 is also called the cavity, which is the main part of the outer surface of the molded plastic part. The concave mold 1 can be installed on the fixed mold or on the movable mold.

[0034] The blank holder 2 is arranged on the die 1 , and a ring-shaped pressing device is arranged on the edge part between the die 1 and the punch 3 . During the stamping process, the main function of the blank holder 2 is to prevent the edge of the workpiece from wrinkling due to instability.

[0035] The punch 3 is also called a punching needle, a punch, a male die, an upper die, etc., and is mainly used to form parts on the inner surface of the product. Wherein, the shape of the punch 3 matches the shape of the die 1 . Since the strain states of dif...

Embodiment 2

[0040] The first embodiment above introduces the stamping die of the present invention, and the following embodiment will further introduce and explain the method of strain forming ability detection using the stamping die in combination with the accompanying drawings and specific application scenarios.

[0041] Specifically, as Figure 5 As shown, the method for detecting the strain forming ability comprises the following steps:

[0042] Step 501: Stamping the board to be tested through a stamping die.

[0043]Wherein, the stamping die includes: a die, a blank holder arranged on the die, and a punch matched with the die; wherein, the punch at least includes a first punching end face and a second punching end face connected to each other, the first The first stamping end surface and the second stamping end surface intersect each other to form a first angle. In the production and manufacture of automobiles, 60%-70% of metal parts need to be plastically formed. Stamping is an i...

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Abstract

The invention discloses a stamping die and a strain forming capability detecting method. The stamping die comprises a female die, a blank holder arranged on the female die and a male die matched with the female die, wherein the male die at least comprises a first stamping end surface and a second stamping end surface which are connected with each other, and the first stamping end surface and the second stamping end surface are crossed with each other, forming a first angle. Strain forming capability detection is carried out by adopting the stamping die, and a to-be-detected plate material is stamped through the stamping die. The stamping die stops stamping when detects that the to-be-detected plate material breaks or reaches a preset height. The tensile depth size, strain states and surface appearances of the to-be-detected plate material after stamping treatment are detected, and the occurring of three strain states, including drawing strain, plane strain and expansion strain, can be realized in one stamping process, so that the forming capability of the material in complicated strain states and the defects of the material in each strain state can be detected.

Description

technical field [0001] The invention relates to the field of component detection, in particular to a stamping die and a method for detecting strain forming capability. Background technique [0002] The shape of automobile body parts is relatively complex. The plastic deformation in the forming of body parts is that the mold exerts an external force on the sheet to cause the shape and size of the deformation area of ​​the sheet to change. This change in shape and size finally makes the sheet be processed into a stamping part. . The action mode and magnitude of a certain force correspond to a certain deformation. During the entire stamping forming process of the part, the stress and strain in the deformation zone and the direction are changing. This change determines the nature of the stamping forming. At present, there are many kinds of auto parts processed by stamping, and their shapes are becoming more and more complex. However, no matter how complex the shape of the parts...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D37/10B21D22/22B21C51/00
CPCB21C51/00B21D22/22B21D37/10
Inventor 李晓刚
Owner BEIJING ELECTRIC VEHICLE
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