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Abstract: The optimization of parameter values in electrical
discharge machining(EDM) has become one of the big problems in
non-traditional manufacturing field, especially the optimization of EDM
parameter values with multiple performance characteristics due to the
reason that the knowledge of EDM mechanism acquired has still been much
limited until now. On such an occasion, a new theory or method ought to
be created or utilized from the interdisciplinary approaches. The grey
relational grade theory,therefore, is employed to optimize the parameter
values with multiple performance characteristics on the basis of the
experimental results with orthogonal array. The paper also makes a
detailed analysis of the effects of different electrical parameter
values and non-electrical parameter values on such performance
characteristics as machining speed, electrode consumption and hole
clearance. As a result, the optimized parameter values are obtained
through the simplified procedure by applying grey relational grade into
the optimization of parameter values with multiple performance
characteristics.
Key words: Micro electronic discharge machining Electronic
discharge machining Grey relational grade Orthogonal array
CLC No: TG661
国家自然科学基金资助项目(59935110). Received 20020104, received in revised form
20020720
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