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论文类型：期刊论文

发表时间：2013-07-01

发表刊物：PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY

收录刊物：SCIE、EI

卷号：37

期号：3

页面范围：753-757

ISSN号：0141-6359

关键字：Micro-EDM; 3D micro cavity; Electrode wear compensation; Machining performance; Scanned area

摘要：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.