Method and apparatus for electrodischarge wire machining
First Claim
1. A wire electric discharge machining method in which electric discharge is generated between the electrodes of a wire electrode and a workpiece so as to machine the workpiece by the electric discharge, comprising the steps of:
- a relative traveling speed of the wire electrode with the workpiece in the second step is set at a constant speed not lower than a predetermined speed at which a short circuit between the electrodes can not continue for a predetermined period of time and more which has been previously set according to a required specification.
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Accused Products
Abstract
In wire electric discharge machining in which electric discharge energy is supplied between a wire electrode (1a) and a workpiece (2) by a machining electric power supply means (16) so as to machine the workpiece (2) when the wire electrode (1a) and the workpiece (2) are relatively traveled with each other by a positioning means, there are provided a first process in which rough machining is conducted in a working solution (4a) and a second process in which finish-machining is conducted in gas (7) such as air, oxygen, nitrogen or inert gas, and the positioning means is controlled by a control means (17) so that a relative traveling speed of the wire electrode (1a) with the workpiece (2) in the second process can be set at a constant rate not lower than a predetermined rate at which a short circuit can not continue between the electrodes for a predetermined period of time and more which has been previously set according to a required specification. It is possible to realize a high accuracy and quality of wire electric discharge machining and also it is possible to realize an enhancement of productivity.
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Citations
10 Claims
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1. A wire electric discharge machining method in which electric discharge is generated between the electrodes of a wire electrode and a workpiece so as to machine the workpiece by the electric discharge, comprising the steps of:
a relative traveling speed of the wire electrode with the workpiece in the second step is set at a constant speed not lower than a predetermined speed at which a short circuit between the electrodes can not continue for a predetermined period of time and more which has been previously set according to a required specification. - View Dependent Claims (2)
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3. A wire electric discharge machining method in which electric discharge is generated between the electrodes of a wire electrode and a workpiece so as to machine the workpiece by the electric discharge, comprising the steps of:
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a first step of conducting rough machining in a machining solution; and
a second step of conducting finish machining in gas, wherein a relative traveling speed of the wire electrode with the workpiece in the second step is set at a variable speed not lower than a predetermined speed at which a short circuit between the electrodes can not continue for a predetermined period of time and more which has been previously set according to a required specification. - View Dependent Claims (4, 5)
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6. A wire electric discharge machine in which electric discharge energy is supplied between electrodes of a wire electrode and a workpiece by a machining electric power supply means so as to machine the workpiece in gas when the wire electrode and the workpiece are relatively traveled with each other by a positioning means, comprising
a control means for controlling the positioning means so that a relative traveling speed of the wire electrode with the workpiece can be set at a constant speed not lower than a predetermined speed at which a short circuit between the electrodes can not continue for a predetermined period of time and more which has been previously set according to a required specification.
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8. A wire electric discharge machine in which electric discharge energy is supplied between electrodes of a wire electrode and a workpiece by a machining electric power supply means so as to machine the workpiece in gas when the wire electrode and the workpiece are relatively traveled with each other by a positioning means, comprising
a control means for controlling the positioning means so that a relative traveling speed of the wire electrode with the workpiece can be set at a variable speed not lower than a predetermined speed at which a short circuit between the electrodes can not continue for a predetermined period of time and more which has been previously set according to a required specification.
Specification