A stamping method for new energy vehicle motor pin pins

By using the innovative process of material tape stamping mold on the pin pin of the 48V new energy vehicle motor motor, the problems of burrs and uneven roots of the PIN needle in the traditional stamping process are solved, and high-efficiency stamping and long-life molds are achieved, reducing the Maintenance costs improve product quality.

CN118847874BActive Publication Date: 2024-12-27WUXI DINGYA PRECISION MFG CO LTD
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Patent Information

Application Number
CN202411016011.9
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-07-27
Publication Date
2024-12-27
Estimated Expiration
2044-07-27

AI Technical Summary

Technical Problem

The traditional 48V new energy vehicle motor motor pin pin stamping process caused burrs to occur at the PIN needle head after 200,000 to 300,000 times, and the roots were uneven due to unbalanced punching stress. The maintenance cycle of traditional molds was short and the cost was high.

Method used

The tape stamping mold is used to form a long straight shape at the end of the needle and a curved root through the steps of guiding holes, hollow areas, tooth-like structures, chamfer deformation, fine cutting, inclined punch cutting and inferring the mold. Burrs, a reasonable process design is designed to avoid uneven punching and shear stress.

Benefits of technology

The PIN needle has been burrs-free, which has improved the stamping efficiency by more than doubled, doubled the production capacity, extended the service life of the mold, reduced maintenance costs, and improved product quality.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention provides a method for stamping and forming motor pins for new energy vehicles, which mainly includes: providing a material strip; punching guide holes in the material strip; punching the outer side of the needle head to form a hollow area between the corresponding guide holes; chamfering and deforming the upper surface of the toothed part to form a shape with a gradually decreasing thickness; precision cutting the toothed structure to form the outer contour of the end of the needle head; using the inclined surface of the punching die to punch the material strip on both sides of the needle head to form a material block contour; using the inference die to push and blank the material block to separate the material block from the needle head; using the burr pressing die to press burrs on both sides of each needle head. The stamping and forming method for motor pins for new energy vehicles provided by the present invention can eliminate burrs on the PIN needle head, the PIN needle spacing is small, and the PIN needle itself is slender and has a deflection angle at the root. The stamping and forming method provided by the present invention can meet the PIN needle punching requirements of the above-mentioned strict structure.
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Citation Information

Patent Citations

  • Metal terminal and manufacturing method thereof

    CN111403937A

  • Continuous stamping die for forming contact pin and material belt at one time

    CN115475879A

  • High-speed stamping process for continuously manufacturing precise PINs by using square lines

    CN116511346A

  • Method of fabricating connector pin contact

    US5735042A