# US 10,503,135 B2 · Cam software and wire electrical discharge machine

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- Number: US 10,503,135 B2
- Document ID: US10503135B2
- Status: Granted
- Kind: B2
- Application number: 15/319,932
- Filed: 2014-08-26
- Published: 2017-05-18
- Granted: 2019-12-10
- Earliest claimed: 2014-08-26
- Assignees: Mitsubishi Electric Corporation
- Applicants: Mitsubishi Electric Corporation
- Inventors: Ken Inukai
- Web page: https://patentgrep.com/patent/US10503135B2

## CPC

- G05B 19/0426: {Programming the control sequence}
- B23H 7/02: Wire-cutting
- G05B 17/02: electric
- G05B 19/4097: characterised by using design data to control NC machines, e.g. CAD/CAM (G05B19/4093 takes precedence)
- B23H 7/20: for program control, e.g. adaptive
- G05B 2219/35012: Cad cam
- G05B 2219/45221: Edm, electrical discharge machining, electroerosion, ecm, chemical
- Y02P 90/02: Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
- G05B: CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS (systems for controlling or regulating non-electric variables G05D; systems for regulating electric or magnetic variables G05F; control devices or systems insofar as characterised by mechanical features only G05G)
- B23H: WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL (processes for the electrolytic or electrophoretic production of coatings, electroforming, or apparatus therefor C25D; processes for the electrolytic removal of material from objects C25F; manufacturing printed circuits using precipitation techniques to apply the conductive material to form the desired conductive pattern H05K3/18)
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

## Abstract

CAM software creates a machining program that executes wire electrical discharge machining under appropriate machining conditions even when the actual arrangement state is unknown at the time of creating the machining program. The CAM software causes a computer to create a machining program for a wire electrical discharge machine to machine a workpiece. The computer is connected to a database that stores a correspondence between setting conditions of the wire electrical discharge machine and the workpiece, and machining conditions suitable for the setting conditions, and the computer performs a first procedure of selecting a plurality of different setting conditions, a second procedure of retrieving machining conditions corresponding to the selected setting conditions, from the database, and a third procedure of creating the machining program that designates one of the machining conditions retrieved in the second procedure, with respect to each of the setting conditions selected in the first procedure.

## Claims

### Claim 1

A non-transitory computer readable recording medium having recorded therein Computer Aided Manufacturing (CAM) software configured to cause a computer to create a machining program for a wire electrical discharge machine comprising an upper nozzle, a lower nozzle, a wire running between the upper nozzle and the lower nozzle, and a plate on which a workpiece is placed such that the workpiece faces the upper nozzle, the machining program being used to machine the workpiece according to a machining condition among machining conditions,
the CAM software causing the computer to perform:
a first procedure of selecting setting conditions of the wire electrical discharge machine and the workpiece, the setting conditions being different from each other;
a second procedure of retrieving the machining conditions corresponding to the setting conditions selected in the first procedure, from a database that stores a correspondence between the setting conditions and the machining conditions suitable for the setting conditions; and
a third procedure of creating the machining program in which the machining conditions retrieved in the second procedure are associated with the setting conditions selected in the first procedure, respectively, wherein the CAM software further causes the computer to:
identify an actual setting condition comprising a wire material, a wire diameter, and a height between the plate and the upper nozzle, wherein the machining program includes a first plurality of different values of the wire material, a second plurality of different values of the wire diameter, and a third plurality of different values of the height, and
identify the machining condition to machine the workpiece based on information which is obtained based on the actual setting condition and indicates a first particular value among the first plurality of different values corresponding to the wire material, a second particular value among the second plurality of different values corresponding to the wire diameter, and a third particular value among the third plurality of different values corresponding to the height, the first particular value, the second particular value, and the third particular value being included in a combination associated with the machining condition among a plurality of combinations of the setting conditions associated with the machining conditions in the machining program.

### Claim 2 (depends on 1)

The non-transitory computer readable recording medium according to claim 1, wherein the wire material comprises at least one from among a soft wire and a brass wire.

### Claim 3

A wire electrical discharge machine configured to machine a workpiece according to a machining condition based on a machining program, the wire electrical discharge machine comprising:
an upper nozzle;
a lower nozzle;
a plate on which the workpiece is placed to face the upper nozzle;
an arrangement-state detector configured to detect an actual setting condition comprising a wire material, a wire diameter, and a height between the plate and the upper nozzle; and
a wire running between the upper nozzle and the lower nozzle, the wire configured to machine the workpiece according to the machining condition suitable for the actual setting condition based on the machining program,
wherein the machining program associates a plurality of machining conditions including the machining condition suitable for the actual setting condition with setting conditions suitable for the plurality of machining conditions, the setting conditions being different from each other and include a first plurality of different values of the wire material, a second plurality of different values of the wire diameter, and a third plurality of different values of the height, and
the wire electrical discharge machine is configured to:
identify the machining condition to machine the workpiece based on information which is obtained based on the actual setting condition and indicates a first particular value among the first plurality of different values corresponding to the wire material, a second plurality value among the second plurality of different values corresponding to the wire diameter, and a third particular value among the third plurality of different values corresponding to the height, the first particular value, the second particular value, and the third particular value being included in a combination associated with the machining condition among a plurality of combinations of the setting conditions associated with the plurality of machining conditions in the machining program.

### Claim 4 (depends on 3)

The wire electrical discharge machine according to claim 3, wherein the arrangement-state detector is further configured to detect the actual setting condition according to a command received from a device external to the wire electrical discharge machine.

### Claim 5 (depends on 3)

The wire electrical discharge machine according to claim 3, wherein the wire material comprises at least one from among a soft wire and a brass wire.