Fabrication of micro punching mold for micro complex shape part by micro EDM

Micro punching process is suitable for mass production of micro parts. It is a challenge to fabricate micro punching mold with complex cross-sectional shape on-machine. The micro punching system’s structure design has to meet the requirement of large punching force. In this study, a micro punching s...

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Veröffentlicht in:International journal of advanced manufacturing technology 2019-01, Vol.100 (1-4), p.743-749
Hauptverfasser: Yu, Zuyuan, Li, Dongping, Yang, Junfeng, Zeng, Zhijie, Yang, Xiaolong, Li, Jianzhong
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container_title International journal of advanced manufacturing technology
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creator Yu, Zuyuan
Li, Dongping
Yang, Junfeng
Zeng, Zhijie
Yang, Xiaolong
Li, Jianzhong
description Micro punching process is suitable for mass production of micro parts. It is a challenge to fabricate micro punching mold with complex cross-sectional shape on-machine. The micro punching system’s structure design has to meet the requirement of large punching force. In this study, a micro punching system has been developed with a micro electrical discharge machining (EDM) module. A series of machining operations, from the fabrication of micro molds to punching, have been completed with no secondary clamping error. The micro die and reversed electrode are prepared using micro EDM milling. The micro punch is fabricated using reversed electrode. The punching clearance is around 11 μm. Complex shape punched holes and blanked parts have been successfully fabricated on copper, brass, 304 stainless steel, and 3J21 alloy. After punching, there was no damage on the edges of micro die and micro punch. The key dimensional error of blanked part varies by different materials, which is less than 2.5 μm.
doi_str_mv 10.1007/s00170-018-2731-1
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subjects Austenitic stainless steels
CAE) and Design
Computer-Aided Engineering (CAD
Dies
EDM electrodes
Electric discharge machining
Engineering
Industrial and Production Engineering
Mass production
Mechanical Engineering
Media Management
Milling (machining)
Molds
Original Article
Punching
title Fabrication of micro punching mold for micro complex shape part by micro EDM
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