发明名称 |
Wire discharge machining power source |
摘要 |
A wire discharge machining power source controls an average machining voltage value applied between a wire electrode (P) and a workpiece (W) to be zero to preent galvanic corrosion of the workpiece (W). A reverse voltage application time control circuit (2) detects the average machining voltage value and generates a pulse (S5) having a pulse width corresponding to a detected value. A reverse voltage regulating circuit (1) detects a difference between a reference voltage and a voltage applied between a transistor (T2) and a resistor (R2) upon application of the reverse voltage through the transistor (T2) and the resistor (R2), and supplies a difference signal, which corresponds to the detected difference, as an ON control signal to the transistor (T2) for a period corresponding to the width of the pulse (S5), thereby controlling the reverse voltage value and setting the average machining voltage value to zero.
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申请公布号 |
US4678884(A) |
申请公布日期 |
1987.07.07 |
申请号 |
US19850807509 |
申请日期 |
1985.11.22 |
申请人 |
FANUC LTD |
发明人 |
OBARA, HARUKI;ITO, MASAYA;TONAMURA, MASASHI |
分类号 |
B23H1/02;B23H7/04;(IPC1-7):B23H1/02 |
主分类号 |
B23H1/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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