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1. EP3144090 - ELECTRICAL DISCHARGE MACHINING SYSTEM HAVING INDEPENDENT ELECTRODES, RELATED CONTROL SYSTEM AND METHOD

유의사항: 이 텍스트는 자동적으로 광학문자인식(OCR) 처리된 텍스트입니다. 법적 용도로는 PDF 버전을 사용하십시오.
Claims

1. An electrical discharge machining (EDM) system (2) comprising:

a guide structure (4);

a plurality of electrode devices (6) positioned at least partially within the guide structure (4), the plurality of electrode devices (6) aligned to provide a plurality of electrical discharges to a workpiece (8), each of the plurality of electrode devices (6) including:

an electrode (10) for positioning proximate the workpiece (8);

an electrode holder (12) coupled to the electrode (10) for holding the electrode (10) proximate the workpiece (8); and

a driver (14) coupled to the electrode holder (12), the driver (14) adapted to modify a position of the electrode holder (12) and the electrode (10); and

a control system (18) operably connected with the driver (14) of each electrode holder (12), the control system (18) configured to perform a process including:

initiating a hole formation program for each of the plurality of electrode devices (6);

determining whether at least one electrode (10) has completed formation of a corresponding hole in the workpiece (8); and

separating the at least one electrode (10) from the workpiece (8) in response to determining that the at least one electrode (10) has completed formation of the corresponding hole.


  2. The system (2) of claim 1, wherein the control system (18) is further configured to:

continue to run the hole formation program for each of the plurality of electrode devices (6) in response to determining that none of the electrodes (10) in the plurality of electrode devices (6) has completed formation of the corresponding hole in the workpiece (8).


  3. The system (2) of claim 1 or 2, wherein the control system (18) is further configured to:

determine whether all of the electrodes (10) in the plurality of electrode devices (6) have completed formation of the corresponding hole in the workpiece (8) after separating the at least one electrode (10) from the workpiece (8); and

separate all of the electrodes (10) from the workpiece (8) in response to determining that all of the electrodes (10) have completed formation of the corresponding hole in the workpiece (8).


  4. The system (2) of claim 3, wherein the control system (18) is further configured to:

continue to run the hole formation program for each of the plurality of electrode devices (6) not separated from the workpiece (8) in response to determining that all of the electrodes (10) in the plurality of electrode devices (6) have not completed formation of the corresponding hole in the workpiece (8).


  5. The system (2) of any of claims 1 to 4, wherein the guide structure (4) is coupled to the electrode holder (12), the guide structure (4) including a slide bearing (20) allowing the electrode holder (12) to move relative to the guide structure (4).
  6. The system (2) of any preceding claim, wherein the driver (14) in each of the plurality of electrode devices (6) includes at least one of a voice coil or a hydraulic driver (14).
  7. The system (2) of any preceding claim, further comprising:

a machine ram (22) coupled to the guide structure (4); and

a back plate (24) coupled to the guide structure (4), the back plate (24) at least partially supporting the driver (14) in each of the plurality of electrode devices (6).


  8. The system (2) of any preceding claim, wherein all of the plurality of electrode devices (6) are aligned parallel with respect to one another and uniformly angled with respect to the guide structure (4).
  9. A method comprising:

positioning an electrical discharge machining (EDM) system (2) proximate a workpiece (8), the EDM system (2) having:

a guide structure (4);

a plurality of electrode devices (6) positioned at least partially within the guide structure (4), the plurality of electrode devices (6) aligned to provide a plurality of electrical discharges to the workpiece (8), each of the plurality of electrode devices (6) including:

an electrode (10) for positioning proximate the workpiece (8);

an electrode holder (12) coupled to the electrode for holding the electrode proximate the workpiece (8); and

a driver (14) coupled to the electrode holder (12), the driver (14) adapted to modify a position of the electrode holder (12) and the electrode (10),

initiating a hole formation program for each of the plurality of electrode devices (6);

determining whether at least one electrode (10) has completed formation of a corresponding hole in the workpiece (8); and

separating the at least one electrode (10) from the workpiece (8) in response to determining that the at least one electrode (10) has completed formation of the corresponding hole.


  10. The method of claim 9, further comprising:

continuing to run the hole formation program for each of the plurality of electrode devices (6) in response to determining that none of the electrodes (6) in the plurality of electrode devices (6) has completed formation of the corresponding hole in the workpiece (8).


  11. The method of claim 9 or 10, further comprising:

determining whether all of the electrodes (10) in the plurality of electrode devices (6) have completed formation of the corresponding hole in the workpiece (8) after separating the at least one electrode (10) from the workpiece (8); and

separating all of the electrodes (10) from the workpiece (8) in response to determining that all of the electrodes (10) have completed formation of the corresponding hole in the workpiece (8).


  12. The method of claim 11, further comprising:

continuing to run the hole formation program for each of the plurality of electrode devices (6) not separated from the workpiece (8) in response to determining that all of the electrodes (10) in the plurality of electrode devices (6) have not completed formation of the corresponding hole in the workpiece (8).


  13. The method of claim 10, 11 or 12, further comprising:

removing the workpiece (8) and positioning a second workpiece proximate the EDM system (2) after separating all of the electrodes (10) from the workpiece (8).


  14. The method of any of claims 9 to 13, wherein each of the plurality of electrode devices (6) is connected with an independent power supply (26) such that a loss of power to one of the plurality of electrode devices (6) does not cause a loss of power to a remainder of the plurality of electrode devices (6).