WIRE ELECTRIC DISCHARGE MACHINING APPARATUS
First Claim
1. A wire electric discharge machining apparatus that performs an electric discharge machining to a workpiece by applying a pulse voltage between a wire electrode and the workpiece, thereby generating a discharge pulse, in accordance with a machining condition which is set, the wire electric discharge machining apparatus characterized in comprising:
- a machining speed detection unit that detects relative machining speed of the workpiece and the wire electrode;
a machining energy calculation unit that calculates machining energy of the discharge pulse;
a board thickness calculation unit that calculates a board thickness of the workpiece based on the machining speed detected by the machining speed detection unit and the machining energy calculated by the machining energy calculation unit;
a stationary state determination unit that determines whether the machining is in a stationary state from a machining state during the machining, after the machining condition is switched in accordance with a board thickness of the workpiece calculated by the board thickness calculation unit; and
a machining condition switching unit that switches the machining condition to a machining condition corresponding to a board thickness calculated by the board thickness calculation unit when the stationary state determination unit determines that the machining is in the stationary state and does not switch the machining condition to the machining condition corresponding to a calculated board thickness when the stationary state determination unit determines that the machining is not in the stationary state.
1 Assignment
0 Petitions
Accused Products
Abstract
A wire electric discharge machining apparatus that performs an electric discharge machining by applying a pulse voltage between a wire electrode (1) and a workpiece (2), the wire electric discharge machining apparatus including, a machining speed detection unit (14) that detects relative machining speed of the workpiece (2) and the wire electrode (1); a machining energy calculation unit (13) that calculates machining energy of a discharge pulse; a board thickness calculation unit (12) that calculates a board thickness of the workpiece (4) based on the machining speed detected by the machining speed detection unit (14) and the machining energy calculated by the machining energy calculation unit (13); a stationary state determination unit (16) that determines whether the machining is in a stationary state from a machining state during the machining, after the machining condition is switched in accordance with a board thickness of the workpiece (4) calculated by the board thickness calculation unit (12); and a machining condition switching unit (11) that switches the machining condition to a machining condition corresponding to a board thickness calculated by the board thickness calculation unit (12) when the stationary state determination unit (16) determines that the machining is in the stationary state and does not switch the machining condition to the machining condition corresponding to a calculated board thickness when the stationary state determination unit determines that the machining is not in the stationary state.
51 Citations
10 Claims
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1. A wire electric discharge machining apparatus that performs an electric discharge machining to a workpiece by applying a pulse voltage between a wire electrode and the workpiece, thereby generating a discharge pulse, in accordance with a machining condition which is set, the wire electric discharge machining apparatus characterized in comprising:
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a machining speed detection unit that detects relative machining speed of the workpiece and the wire electrode; a machining energy calculation unit that calculates machining energy of the discharge pulse; a board thickness calculation unit that calculates a board thickness of the workpiece based on the machining speed detected by the machining speed detection unit and the machining energy calculated by the machining energy calculation unit; a stationary state determination unit that determines whether the machining is in a stationary state from a machining state during the machining, after the machining condition is switched in accordance with a board thickness of the workpiece calculated by the board thickness calculation unit; and a machining condition switching unit that switches the machining condition to a machining condition corresponding to a board thickness calculated by the board thickness calculation unit when the stationary state determination unit determines that the machining is in the stationary state and does not switch the machining condition to the machining condition corresponding to a calculated board thickness when the stationary state determination unit determines that the machining is not in the stationary state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification
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- Resources
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Current AssigneeMitsubishi Electric Corporation
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Original AssigneeMitsubishi Electric Corporation
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InventorsOnodera, Yasuo, Shiozawa, Takahiro, Sato, Tatsushi
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Granted Patent
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Time in Patent OfficeDays
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Field of Search
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US Class Current219/69.12
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CPC Class CodesB23H 7/04 Apparatus for supplying cur...B23H 7/065 Electric circuits specially...B23H 7/20 for programme-control, e.g....
