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CSME 2018/06
Volume 39 No.3
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329-338
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Design of an Experiment to Study the Corner Collapse in Wire EDM
Jui-Fang Lianga and Yunn-Shiuan Liaoa
aDepartment of Mechanical Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei 106, Taiwan
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Abstract:
The error from corner cutting is significant in wire Electrical Discharge Machine (abbr. EDM). Most studies focus on the cause of wire deflection, but there is no study on the discharge gap variation when the cutting parameters adjust in corner cutting. This paper studies the cutting parameter that affects the wire deflection and discharge gap at different cutting speeds using experimental designs. The effects of different cutting parameters on the wire deflection and discharge gap were separately investigated. The experimental results show that the processing of the corner should condiser the amount of wire deflection and effect of the discharge gap to obtain the best cutting parameters. Reducing the cutting parameter of ON to 30% of the original speed can signficantly improve the corner accuracy. This study has been applied in Accutex wire EDM and improved the corner cutting significantly.
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Keywords: wire EDM, wire deflection, discharge gap, corner collapse
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*Corresponding author; e-mail: ray@accutex.com.tw
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©
2018
CSME , ISSN 0257-9731
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