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Method for classifying discharge machining wave patterns, and method for preventing arcs based on the classification of the discharge machining wave in discharge
Method for classifying discharge machining wave patterns, and method for preventing arcs based on the classification of the discharge machining wave in discharge
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机译:基于放电中放电加工波的分类的放电加工波型的分类方法和防止电弧的方法
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摘要
A method for classifying electro-discharge machining wave patterns by using a delay circuit, and a method for preventing arcs by classifying the electro-discharge machining waves. The voltage or current waves which are generated during an electro-discharge machining operation are classified by using high and low reference levels. Then the signals are delayed, inverted and AND-logic-combined to obtain a monitoring signal. The voltage or current waves are sampled immediately before the off-state of the delayed and inverted pulse, thereby classifying each of the electro-discharge machining waves. Thus the voltage or current waves which are generated during an electro-discharge machining operation are classified. Then, by utilizing the result of the classification, and interrupting the EDM discharge power immediately and momentarily when a wave is classified as an arc wave, damage due to the occurrence of arcs is prevented.
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