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- Title
Process planning and electrode wear compensation for 3D micro-EDM.
- Authors
Yan, Mu-Tian; Lin, Shr-Shiang
- Abstract
This paper presents a novel multi-cut process planning method and a new electrode wear compensation method based on a machine vision system for three-dimensional (3D) micro-electrical discharge machining (micro-EDM). Front wear and corner wear of tool electrode can be measured and compensated in a direct manner by the vision system's image processing software capabilities. Experiments have shown that corner wear ratio (defined as a ratio between the length of corner wear and electrode diameter) is linearly proportional to machining length under a fixed machining depth condition. Track overlapping between the two adjoining paths is designed appropriately according to the corner wear ratio. Experimental results not only indicate that the proposed multi-cut process planning and electrode wear compensation methods can significantly improve machining accuracy and reduce machining time for the micro-EDM process, they also demonstrate that the X- Y dimensional errors of micro-structures can be controlled within 10 μm.
- Subjects
ELECTRIC metal-cutting; PRODUCTION planning; ELECTRODES; MECHANICAL wear; THREE-dimensional display systems; EXPERIMENTS; IMAGE processing; COMPUTER software
- Publication
International Journal of Advanced Manufacturing Technology, 2011, Vol 53, Issue 1-4, p209
- ISSN
0268-3768
- Publication type
Article
- DOI
10.1007/s00170-010-2827-8