磁場輔助電化學放電加工之裝置及方法APPARATUS AND METHOD FOR MAGNETIC FIELD ASSISTED ELECTROCHEMICAL DISCHARGE MACHINING

專利類型

發明

專利國別 (專利申請國家)

美國

專利申請案號

12/460,947

專利證號

US 8,652,307 B2

專利獲證名稱

磁場輔助電化學放電加工之裝置及方法APPARATUS AND METHOD FOR MAGNETIC FIELD ASSISTED ELECTROCHEMICAL DISCHARGE MACHINING

專利所屬機關 (申請機關)

國立中央大學

獲證日期

2014/02/18

技術說明

本發明為利用磁流動效應(Magneto Hydrodynamic Effect, MHD)來改善電化學放電加工(Electrochemical Discharge Machining, ECDM)之氣膜包覆厚度及電解液循環之配置與方法，藉此提昇加工精度及速率。該方法主要為利用帶電離子在磁場中的運動特性，由於在電化學放電加工過程中電解氣泡表面佈滿帶電離子，企圖以帶電離子在磁場中的運動現象，迫使電解氣泡隨磁場磁極方向運動，以此取代機械式的擾動效果，藉此用來提升加工精度及速率。該方法具有製程簡單、成本低與高品質等多項優點，可廣泛應用於不同尺寸及形狀之非導電硬脆材料細微加工上，如生醫晶片之微流道與微孔、微光機電系統及各種微加工領域之用，加工後表面平整，不需二次加工。 This invention utilizes Magneto Hydrodynamic Effect (MHD) to improve the thickness of bubble film and electrolyte circulation so as to enhance the machining accuracy and the machining rate during Electrochemical Discharge Machining (ECDM). As in ECDM process, the surface of electrolysis bubbles would suffuse electrification ion. The Lorenz force induces a movement of charged ions and further pushes the electrolysis bubble moving toward the magnetic direction. This effect of mechanism, which is in place of a mechanical disturbance, can stir an electrolyte even in a narrow space when in higher machining depth. The present invention provides with advantages as a simple process without modify equipment, cost down and high additional value. It can be applied to non-conducting materials micro-machining in various fields such as micro-mold, biochips, micro-fluid mold and MEMS.

備註

連絡單位 (專責單位/部門名稱)

智權技轉組

連絡電話

03-4227151轉27076

網址