US 11,504,785 B2 · Wire electrical discharge machine and control method

Abstract

A wire electrical discharge machine controls a second motor unit including motors for feeding a wire electrode in a wire running direction in which the wire electrode extends, so as to feed the wire electrode at a set feed rate during a machining period from a first time point at which the wire electrode moving relative to a workpiece in a direction intersecting the wire running direction is estimated to enter the workpiece, to a second time point at which the wire electrode is estimated to exit the workpiece. The second motor unit is controlled so as to feed the wire electrode at a feed rate lower than the set feed rate during at least one of a first non-machining period from a processing start time point to the first time point and a second non-machining period from the second time point to a processing end time point.

Claims10

Dependent claims

A wire electrical discharge machine for machining a workpiece by applying voltage to an electrode gap formed between the workpiece and a wire electrode to generate electrical discharge, comprising:

a motor configured to feed the wire electrode in a wire running direction in which the wire electrode extends;
a processor;
and
a memory having stored therein instructions, which when executed by the processor cause the wire electrical discharge machine to:
control the motor so as to feed the wire electrode at a set feed rate during a machining period from a first time point at which the wire electrode moving relative to the workpiece in a direction intersecting the wire running direction is estimated to enter the workpiece, to a second time point at which the wire electrode is estimated to exit the workpiece;
and
control the motor so as to feed the wire electrode at a feed rate lower than the set feed rate during at least one of a first non-machining period from a processing start time point to the first time point and a second non-machining period from the second time point to a processing end time point.

4 more elements

A control method of a wire electrical discharge machine that machines a workpiece by applying voltage to an electrode gap formed between the workpiece and a wire electrode to generate electrical discharge, comprising:

controlling a motor configured to feed the wire electrode in a wire running direction in which the wire electrode extends, so as to feed the wire electrode at a set feed rate during a machining period from a first time point at which the wire electrode moving relative to the workpiece in a direction intersecting the wire running direction is estimated to enter the workpiece, to a second time point at which the wire electrode is estimated to exit the workpiece;
and
controlling the motor so as to feed the wire electrode at a feed rate lower than the set feed rate during at least one of a first non-machining period from a processing start time point to the first time point and a second non-machining period from the second time point to a processing end time point.

Dependencies are inferred from the claim text.

Wire electrical discharge machine and control method

Life of this patent

Wire electrical discharge machine and control method

Life of this patent

Abstract

Claims10