An Ultrasonic Assisted Fine Blanking Process and Its Die

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...

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 the other hand, it makes the working environment of the fine blanking die very harsh.

In addition, due to the thermal effect and severe friction in the fine blanking process, it is easy to cause side adhesion of the die edge, die bulge, punch die chipping, and plastic instability during production, resulting in a decline in the quality of fine blanking parts and mold failure. worn out, even scrapped

When the plasticity of the material is poor, the mold is more prone to the above defects as the deformation resistance increases

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