Ultrasonic-assisted fine blanking process and die

A forming process and forming die technology, applied in the field of fine blanking forming process and its devices, can solve the problems of reducing the life of the die, instability, and the quality of the fine blanking parts, so as to reduce the fine blanking deformation resistance, improve the processing lubrication conditions, The effect of improving fine blanking performance

Inactive Publication Date: 2014-03-05
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the plasticity of the material is poor, the section of the fine blanking part is prone to defects such as tearing and cracking
Sometimes tearing and cracking occur at the same time, resulting in secondary shear planes and secondary cracking defects
These defects will seriously affect the dimensional accuracy of fine blanking parts, the strength of parts and other performance
2) Reduce mold life
On the one hand, this deformation method can improve the smoothness and dimensional accuracy of the blanking section, but on ...

Method used

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  • Ultrasonic-assisted fine blanking process and die
  • Ultrasonic-assisted fine blanking process and die
  • Ultrasonic-assisted fine blanking process and die

Examples

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Embodiment Construction

[0025] An ultrasonic-assisted fine blanking forming process, which comprises the following steps:

[0026] 1) Prepare the ultrasonic-assisted fine blanking forming die:

[0027] The ultrasonic-assisted fine blanking forming mold includes an upper template 1, a punch base 2, a pressure backing plate 3, a guide post 5, a V-shaped blank holder 6, a guide sleeve 8, a lower template 9, a punch 16, a die 17, The ejector rod 18; the upper formwork 1 and the lower formwork 9 can move relative to each other (set on the formwork); the pressure backing plate 3 is fixed on the upper formwork 1, and the pressure backing plate 3 is provided with a through hole, and the upper formwork 1 is opened There is a punch seat hole, the punch seat 2 penetrates into the punch seat hole on the upper template 1, the threaded hole at the upper end of the punch seat is connected with the hydraulic plunger on the hydraulic press; the upper end of the guide post 5 is fixed to the upper template 1 , the low...

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Abstract

The invention relates to an ultrasonic-assisted fine blanking process and device. According to the process, ultrasonic wave is input to a male die during the process of fine blanking to allow the male die to resonate, the bottom of the male die vibrates under high frequency, and accordingly the features of the traditional fine blanking formation are changed and the quality of blanks is improved. Compared to the traditional fine blanking, the ultrasonic-assisted fine blanking process has the advantages that forming property of fine blanking material is improved, flow stress of the material is reduced, and the quality of fine-blanked parts is improved; forming load is reduced, and the service life of the fine blanking die is prolonged. The invention further designs an ultrasonic-assisted fine blanking die device. The ultrasonic-assisted fine blanking process and device is significant to widening the range of fine blanking materials, improving the quality of fine blanks and prolonging the service life of the fine blanking die.

Description

technical field [0001] The invention relates to a fine blanking forming process and a device thereof. Background technique [0002] Fine blanking is an advanced metal plastic forming process. Fine blanking in the usual sense refers to strong edge blanking. Compared with ordinary blanking, one fine blanking can obtain parts with bright blanking section, smooth surface and high dimensional accuracy. Due to its high-quality, high-efficiency and low-consumption characteristics, the fine blanking process has been more and more widely used in the fields of aerospace, machinery, electronics and military industry. Fineblanked parts are widely used for functional parts that require the smallest dimensional tolerances and have the smallest roughness. At present, with the rise of the automobile industry, the application of fine blanking technology in automobiles has also been greatly developed. There are about 40 to 200 fine blanking parts in a car. [0003] At present, fine blankin...

Claims

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Application Information

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IPC IPC(8): B21D28/02B21D28/14B21D45/04B21D37/00
Inventor 刘艳雄华林宋燕利赵新浩
Owner WUHAN UNIV OF TECH
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