WIRE ELECTRIC DISCHARGE MACHINE HAVING FUNCTION OF COMPENSATING POSITION OF WIRE ELECTRODE
First Claim
1. A wire electric discharge machine that supports a wire electrode by upper and lower wire guides provided in upper and lower nozzles, respectively, and performs electric discharge machining while moving the wire electrode relative to a workpiece according to a machining program and supplying a machining fluid from the upper and lower nozzles, the wire electric discharge machine comprising:
- a fluid pressure detecting unit that detects the pressure of the machining fluid supplied from the upper nozzle and/or the lower nozzle during the electric discharge machining;
a memory device that stores a relational expression representing a relation between the pressure of the machining fluid detected by the fluid pressure detecting unit and a displacement amount of each of the upper and lower wire guides corresponding to the pressure of the machining fluid; and
a controller that obtains displacement amounts of the upper and lower wire guides, which correspond to the pressure of the machining fluid detected by the fluid pressure detecting unit, from the relational expression stored in the memory device, calculates positional compensation values of the upper and lower wire guides on the basis of the obtained displacement amounts, and compensates the position of the wire electrode relative to the workpiece by compensating command values of the machining program on the basis of the calculated positional compensation values.
1 Assignment
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Accused Products
Abstract
While machining is carried out according to a machining program by an electric discharge machine, the pressures of a machining fluid supplied from upper and lower nozzles are detected and displacement amounts of upper and lower wire guides are obtained from the detected pressures. Further, positional compensation values of the upper and lower wire guides are calculated on the basis of the obtained displacement amounts, and command values of the machining program are compensated on the basis of the calculated positional compensation values.
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Citations
4 Claims
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1. A wire electric discharge machine that supports a wire electrode by upper and lower wire guides provided in upper and lower nozzles, respectively, and performs electric discharge machining while moving the wire electrode relative to a workpiece according to a machining program and supplying a machining fluid from the upper and lower nozzles, the wire electric discharge machine comprising:
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a fluid pressure detecting unit that detects the pressure of the machining fluid supplied from the upper nozzle and/or the lower nozzle during the electric discharge machining; a memory device that stores a relational expression representing a relation between the pressure of the machining fluid detected by the fluid pressure detecting unit and a displacement amount of each of the upper and lower wire guides corresponding to the pressure of the machining fluid; and a controller that obtains displacement amounts of the upper and lower wire guides, which correspond to the pressure of the machining fluid detected by the fluid pressure detecting unit, from the relational expression stored in the memory device, calculates positional compensation values of the upper and lower wire guides on the basis of the obtained displacement amounts, and compensates the position of the wire electrode relative to the workpiece by compensating command values of the machining program on the basis of the calculated positional compensation values. - View Dependent Claims (2, 3, 4)
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Specification