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Abstract: There is machining error in electrical discharge
machining (EDM) due to the electrode’s orbiting. The NC (Numerical
control)-based method is proposed to eliminate the error, by modifying
the NC codes of electrode 3D model according to the orbit pattern and
orbit radius in EDM. Based on the method, a software system is built to
process NC codes. Prior to the electrode machining, this software system
processes the NC codes which is used to machine electrode and outputs
the new NC codes which has the same format with the old one and can be
used to machine electrode. Several experiments are made to test this
method, and show that the NC-based method can effectively improve
machining precision in EDM.
Key words: Electrical discharge machining (EDM) Electrode Obit
Numerical control (NC)
CLC No: TH164
国家科技型中小企业创新基金资助项目(01C26213300359). Received 20040419, received in
revised form 20041025
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