使用油加工液微線切割放電加工之研究

A Study on Micro Wire-EDM Using EDM Oil as Dielectric

顏木田(Mu-Tian Yan) ； 莊明翔(Ming-Hsiang Chuang)

《先進工程學刊》 3卷4期 (2008/10) Pp. 285-289

https://doi.org/10.29948/JAE.200810.0004

摘要

本文探討油加工液與去離子水對微線切割放電加工的加工精度與表面品質之影響。在加工過程中，水加工因電解作用影響，表面粗糙度會比油加工差，且工件表面冷卻速度較快，表面微破裂情形較為顯著。此外油的電阻值較高，造成放電間隙寬度降低，溝槽寬會比去離子水減少20-40 μm，其最大變動量也降低4-5μm。由實驗結果得知，使用油加工液能提高加工精度，但加工速度會急劇降低。

關鍵字

線切割放電加工 ； 表面完整度 ； 加工精度

並列摘要

This paper aims to investigate the influence of kerosene and deionized water as dielectrics on surface quality and machining accuracy of micro wire-EDM. With no chemical corrosion and electrolysis compared to water dielectric, better surface finish can be achieved by using kerosene as dielectric. Deionized water’s faster quenching contributes to micro-cracking of the machined surface. Spark gap width and maximum variations of slit width can be reduced by 20-40 μm and 4-5 μm, respectively using kerosene as dielectric liquid since the resistivity of kerosene is higher than that of deionzed water. Experimental results demonstrate that the machining accuracy can be improved by using kerosene as dielectric but the machining speed decreases dramatically.

並列關鍵字

wire-EDM ； surface integrity ； machining accuracy