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Indexed by:期刊论文
Date of Publication:2013-07-01
Journal:PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
Included Journals:SCIE、EI
Volume:37
Issue:3
Page Number:753-757
ISSN No.:0141-6359
Key Words:Micro-EDM; 3D micro cavity; Electrode wear compensation; Machining performance; Scanned area
Abstract:Complex 3D micro-structures can be fabricated layer by layer in alloys by micro electrical discharge machining (EDM) using simple shaped electrodes. However, electrode wear is a serious problem which significantly affects machining accuracy. The electrode wear compensation method is a key issue in micro EDM milling and effectively solves this problem. This paper proposes a new compensation method based on the scanned area (BSA) in each layer machining. The new method is integrated with a CAD/CAM system to generate 3D micro cavities. Experimental results have been compared with those using the uniform wear method (UWM) and those using a combination of linear compensation with UWM. It was found that using the proposed method machining efficiency was improved and tool wear ratio was reduced. (C) 2013 Elsevier Inc. All rights reserved.