Electric heating – Metal heating – Cutting or disintegrating
Patent
1993-01-26
1994-12-20
Evans, Geoffrey S.
Electric heating
Metal heating
Cutting or disintegrating
219 6913, B23H 102, B23H 714
Patent
active
053747984
ABSTRACT:
An electric power-source apparatus for a discharge processing machine comprises a constant-current supply section having a first switching element and an output-current interrupting section having a second switching element. Processing power is supplied to a location between an electrode and a workpiece which are arranged within a dielectric. A comparator compares output-current detecting values from the constant-current supply section, and upper-limit addition voltage and lower-end subtraction voltage of an output-current command section with each other, respectively. Output current from the constant-current supply section is controlled by a first flip flop. A timer section is controlled by a discharge command from a discharge command section and a discharge-time command section. The output-current interrupting section is controlled by the comparator, the timer section and a second flip flop.
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patent: 5083001 (1992-01-01), Kinbara et al.
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patent: 5214558 (1993-05-01), Melnyk
Evans Geoffrey S.
Mitsubishi Denki & Kabushiki Kaisha
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