WIRE ELECTRICAL DISCHARGE MACHINE
First Claim
1. A wire electrical discharge machine using a machining power source to apply a machining current across an electrode gap formed between a wire electrode and a workpiece to be machined and thereby perform electrical discharge machining on the workpiece, comprising:
- an electrode unit configured to supply the machining current to the electrode gap;
a switch configured to change impedance between the machining power source and the electrode unit; and
a controller configured to, at a time of a core retaining process, control the switch to set the impedance to be higher than the impedance in a cutting process and thereby suppress the machining current flowing through the electrode gap.
1 Assignment
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Accused Products
Abstract
A wire electrical discharge machine includes: an electrode unit for supplying a machining current to an electrode gap; a switch for changing impedance between a machining power source and the electrode unit; and a controller for, at the time of a core retaining process, controlling the switch to set the impedance to be higher than the impedance in a cutting process and thereby suppressing the machining current flowing through the electrode gap.
136 Citations
15 Claims
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1. A wire electrical discharge machine using a machining power source to apply a machining current across an electrode gap formed between a wire electrode and a workpiece to be machined and thereby perform electrical discharge machining on the workpiece, comprising:
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an electrode unit configured to supply the machining current to the electrode gap; a switch configured to change impedance between the machining power source and the electrode unit; and a controller configured to, at a time of a core retaining process, control the switch to set the impedance to be higher than the impedance in a cutting process and thereby suppress the machining current flowing through the electrode gap. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification