WO1999029458A1 - Appareil de sectionnement de fils par decharge electrique et son procede de commande - Google Patents
Appareil de sectionnement de fils par decharge electrique et son procede de commande Download PDFInfo
- Publication number
- WO1999029458A1 WO1999029458A1 PCT/JP1998/005608 JP9805608W WO9929458A1 WO 1999029458 A1 WO1999029458 A1 WO 1999029458A1 JP 9805608 W JP9805608 W JP 9805608W WO 9929458 A1 WO9929458 A1 WO 9929458A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- axis
- wire
- workpiece
- electric discharge
- movement
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- 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
- B23H7/00—Processes or apparatus applicable to both electrical discharge machining and electrochemical machining
- B23H7/02—Wire-cutting
Definitions
- the present invention provides a wire-cut electric discharge machine that moves one of a wire electrode and a work piece relative to the other in an XY plane while generating a discharge between the wire electrode and the work piece traveling between a pair of wire guides.
- the present invention relates to a wire-cut electric discharge machine capable of forming a tapered surface on a workpiece by inclining a traveling wire electrode.
- X-Y plane a horizontal plane
- X-Y plane a horizontal plane
- the wire electrode and the workpiece are moved along an X-axis.
- the work piece is fixed to a work stand, which is mounted on a table that is movable on the bed in the XY plane.
- the table does not move and each of the arms on which a set of wire guides is attached is supported by a movable member in the XY plane.
- Electric discharge machines are also known.
- the wire-cut electric discharge machine includes a bed 1, a non-moving table 2 mounted on the bed 1, and a movable column 21.
- the park stand 7 is fixed to the table 2, and the workpiece W is mounted on the work stand 7.
- the processing tank side wall 8 surrounding the workpiece W is also fixed to the table 2.
- the column 21 is mounted on the bed 1 so as to be movable in the direction of the X-axis
- the ram 22 is mounted on the column 21 so as to be movable in the direction of the Y-axis orthogonal to the X-axis.
- the processing head 9 is provided on a portion of the ram 22 that protrudes toward the processing tank so as to be movable in the Z-axis direction perpendicular to the XY plane.
- the processing head 9 is provided with a wire bobbin around which the wire electrode E is wound, a device for applying tension to the wire electrode E, and a wire supply device including a large number of plies.
- Slider 2 A tape cutting unit 23 composed of 231 and 232 is provided at the lower end of the processing head 9.
- the slider 231 can move in the direction of the U axis parallel to the X axis, and the slider 232 can move in the direction of the V axis parallel to the Y axis.
- An automatic wire reader (automatic wire reader) 13 that automatically inserts the wire electrode E into the hole in the workpiece W, so-called “AWT”, is attached to the taper cut unit 23.
- One end of the upper arm 11 is also attached to the tape pack unit 23, and the upper wire guide device 14 is attached to the other end of the upper arm 11.
- a generally L-shaped lower arm 15 is fixed at one end to the bottom of the ram 22 and extends down the column 21 through a hole in the ceiling of the column 21.
- the lower arm 15 then extends horizontally and penetrates the processing tank side wall 8, and the lower wire guide device 16 is attached to the other end of the lower arm 15.
- the wire electrode E typically moves in the XY plane relative to the workpiece W and travels between a pair of wire guide devices 14 and 16 perpendicular to the XY plane.
- the processing is performed by inclining the wire electrode E running between the pair of wire guide devices 14 and 16 by a certain angle from the Z axis.
- the upper wire guide device 14 is moved by the tape cut unit 23 in a U-V plane defined by orthogonal U and V axes. Since the size of the taper force tun unit 23 is limited in terms of the rigidity of the machine, the maximum movement amount of the upper wire guide device 14 is usually about 70 mm in each of the U-axis direction and the V-axis direction.
- a machine cover 100 that blocks electromagnetic waves of a certain frequency or higher covers the wire-cut electric discharge machine.
- the moving body 3 is mounted on the bed 1 so as to be movable in the X-axis direction
- the moving body 4 is mounted on the moving body 21 so as to be movable in the Y-axis direction orthogonal to the X-axis.
- the lower arm 15 is supported by the moving body 4 at one end.
- the moving body 5 is mounted on the moving body 4 so as to be movable in the direction of the U axis parallel to the X axis
- the moving body 6 is mounted on the moving body 5 so as to be movable in the direction of the V axis parallel to the Y axis.
- a wire bobbin 12 on which the wire electrode E is wound, a device for applying tension to the wire electrode E, and a wire supply device including a large number of plies are provided on the panel 10.
- a numerical controller 30 including a computer controls movement in the X-axis, Y-axis, U-axis, V-axis and Z-axis directions.
- the FIG. 6 wire cut electric discharge machine provides a maximum moving distance to the moving bodies 5 and 6 larger than the FIG. 5 sliders 2 31 and 2 32. .
- Today's wire-cut EDMs require greater maximum travel along the U and V axes and smaller footprints. Therefore, the size of the machine cover 100 and the processing tank side wall 8 is designed to be minimized, and there is a possibility that other machine components physically collide with them.
- the head 9 physically collides with other machine components such as the machining tank side wall 8 and the machine cover 100, or the head 9 excessively hangs (O verhang). It is necessary to prevent that from happening.
- An object of the present invention is to provide a wire-cut electric discharge machining that secures a larger maximum movement amount with respect to the U-axis or the V-axis and also reliably prevents a movable mechanical component from physically colliding with another mechanical component. It is to provide a device.
- a wire cut discharge according to the present invention which has a second wire guide that is movable in a movable manner and generates a discharge between the wire electrode running between the first and second wire guides and the workpiece to process the workpiece.
- the sum of the amount of movement in the direction of the first axis and the amount of movement in the direction of the second axis is limited.
- FIG. 1 is a block diagram illustrating one embodiment of the wire electric discharge machine according to the present invention.
- FIG. 2 is a block diagram illustrating another embodiment of the wire electric discharge machine according to the present invention.
- FIG. 3 is a flowchart showing the operation of the numerical controller of FIG.
- FIG. 4 is a flowchart showing the operation of the numerical controller of FIG.
- FIG. 5 is a side view illustrating a conventional wire cut electric discharge machine.
- FIG. 6 is a side view illustrating a conventional wire cut electric discharge machine.
- the wire electric discharge machine according to the present invention is characterized by its control device and can include mechanical parts similar to various types of conventional wire electric discharge machines.
- the numerical controller 30 includes a CPU 31 including registers, a ROM 32, a RAM 33, and a memory 34.
- the ROM 32 stores a system program
- the CPU 31 controls the entire discharge machine in accordance with the system program
- the RAM 33 temporarily stores an NC program and a moving amount of the machine in each axis direction
- the memory 35 For example, it is composed of a non-volatile memory, and stores a limit and a program for checking whether or not the commanded moving amount is within the limit.
- input device 35 includes a remote control 35A, a keyboard 35B, and a reader 35C for reading data from a storage medium such as a tape or disk.
- the numerical controller 30 further includes an image processing unit 36A that provides an output signal to a display device 36B such as a CRT, a movement command generation unit 37 that provides a movement command to each of a motor driver that drives a motor, and a movement It includes a limit determining unit 38 that receives a command and determines whether or not the commanded movement amount is the limit ⁇ , or not.
- the movement command generation unit 37 decodes the NC program for each program block, obtains a machining path, and supplies a movement command necessary for the machining path to an appropriate motor drive 39 via the limit determination unit 38. In the illustrated embodiment, only one motor 4OA and motor driver 39 combination is illustrated, and the other combinations are omitted.
- the rotary encoder 40 B attached to the motor 4 OA sends a signal indicating the current movement i to the limit determination unit 38 via the motor driver 39.
- Input device Unit 35, ROM 32, RAM 33, memory 34, image processing unit 36A, movement command generator 37, and limit judging unit 38 are connected to the CPU via the address data bus line 41. 3 are joined to one.
- the movement command generator 37 receives the signal from the manual data input ("MDI") or the NC program, and provides the movement command to the limit determiner 38. If the limit determination unit 38 determines that the commanded movement amount exceeds the limit, the limit determination unit 38 does not provide the movement command to the motor driver 39 and requests the CPU 31 to perform error processing.
- MDI manual data input
- NC program NC program
- the flowchart in FIG. 3 shows the process by which the numerical controller 30 checks whether the NC program includes a movement exceeding the limit.
- a program for performing the limit check is stored in the memory 34. During the limit check, the table on which the workpiece is mounted or the pair of guides moves according to the NC program, but the workpiece is not machined.
- the set limit is stored in the memory 34 at step S 71.
- the lower limit a and the upper limit b of the sum of the movement amount X in the X-axis direction and the movement amount u in the U-axis direction, and the lower limit of the sum of the movement amount y in the Y-axis direction and the movement amount V in the V-axis direction c and upper limit d are set.
- the direction of the U axis is parallel to the direction of the X axis
- the direction of the V axis is parallel to the direction of the Y axis.
- step S72 the movement command generation unit 37 decodes the NC program temporarily stored in the RAM 33 for each program block, and generates a movement command. This movement command is provided to the limit determination unit 38 and stored in the RAM 33.
- the process ends. If not, the process proceeds to step S74, where the limit judging unit 38 determines the commanded movement amount of the certain axis and the parallelism of the certain axis in accordance with the program stored in the memory 34. The sum of the current movement amounts on the axis of is calculated.
- the limit judging unit 38 obtains the sum x + u of the commanded movement amount u and the current movement amount X in the X-axis direction. Subsequent to step S74, the limit determining unit 38 determines in step S75 whether the sum x + u is between the limits a and b. If it is determined in step S75 that the commanded moving amount is within the limit, the segment of the machining path is drawn on the display device 36B in step S76, and the process returns to step S73. Otherwise, the movement of the machine is stopped in step S77, and a message indicating an NC program error appears on the display device 36B in step S78.
- the flowchart of FIG. 4 shows the process performed by the numerical controller 30 when the movement command is given to the motor driver 39 from the remote controller 35A or the keyboard 35B instead of the form of the NC program.
- This movement command is valid only while the so-called "JOG” key is pressed after the movement speed is specified, for example.
- the input device 35A or 35B has several "JOG” keys depending on the number of directions of movement, such as the plus "+” and minus "-" directions of the X axis.
- the set limit is stored in the memory 34 in step S81.
- the limit judging unit 38 reads the current movement amounts x, y, u, and V on the X, Y, U, and V axes from the encoder 40B in step S82, and moves in step S83. Find the sum x + u, y + v of the quantities. If the sum x + u is not between the limits a and b in step S84, or if the sum y + v is not between the limits c and d, the machine stops moving in step S85 and the step S8 A message indicating the limit bar at 6 appears on the display device 36B. Otherwise, the process goes to step S87. Then, when the movement command is valid, the process returns to step S82.
- the limit judging section 38 may be connected to only the movement command generating section 37. In that case, the limit judgment section 3 8 When a movement command is received from 7, a signal indicating the determination result is supplied to the CPU 31 via the movement command generator 37.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Automatic Control Of Machine Tools (AREA)
- Auxiliary Devices For Machine Tools (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98959171A EP0993894B1 (en) | 1997-12-11 | 1998-12-11 | Wire cut electric discharge machining apparatus and control method therefor |
DE69842111T DE69842111D1 (de) | 1997-12-11 | 1998-12-11 | Schneiddrahtelektroerosionsmaschine und steuerungsverfahren dafür |
US09/355,911 US6278076B1 (en) | 1997-12-11 | 1998-12-11 | Wire cut electric discharge machining apparatus and control method therefor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9/341664 | 1997-12-11 | ||
JP9341664A JPH11170117A (ja) | 1997-12-11 | 1997-12-11 | 工作機械の移動軸の制御方法及び装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999029458A1 true WO1999029458A1 (fr) | 1999-06-17 |
Family
ID=18347841
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1998/005608 WO1999029458A1 (fr) | 1997-12-11 | 1998-12-11 | Appareil de sectionnement de fils par decharge electrique et son procede de commande |
Country Status (6)
Country | Link |
---|---|
US (1) | US6278076B1 (ja) |
EP (1) | EP0993894B1 (ja) |
JP (1) | JPH11170117A (ja) |
CN (1) | CN1100639C (ja) |
DE (1) | DE69842111D1 (ja) |
WO (1) | WO1999029458A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000062966A1 (es) * | 1999-04-16 | 2000-10-26 | Ona Electro-Erosion, S.A. | Maquina de electroerosion por hilo |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4041261B2 (ja) * | 2000-03-10 | 2008-01-30 | 株式会社ソディック | ワイヤ放電加工機 |
CN100425381C (zh) * | 2005-09-21 | 2008-10-15 | 上海大量电子设备有限公司 | 一种电火花线切割机 |
JP4221016B2 (ja) | 2006-07-25 | 2009-02-12 | ファナック株式会社 | 干渉チェックを行う数値制御装置 |
KR101575780B1 (ko) * | 2008-07-10 | 2015-12-08 | 시티즌 마쉬나리 가부시키가이샤 | 간섭 체크 장치 및 간섭 체크 방법 및 간섭 체크 장치를 갖춘 공작기계 |
CN103596718B (zh) * | 2011-04-19 | 2016-03-16 | 有限会社仓敷系统设计 | 放电加工装置 |
JP2014200864A (ja) * | 2013-04-02 | 2014-10-27 | ファナック株式会社 | ワイヤ電極張力制御機能を有するワイヤ放電加工機 |
JP5977290B2 (ja) * | 2014-07-30 | 2016-08-24 | ファナック株式会社 | 誤加工防止機能を備えたワイヤ放電加工機 |
JP6548889B2 (ja) * | 2014-10-27 | 2019-07-24 | 共立精機株式会社 | ツールプリセッターに於ける衝突防止装置 |
CN107073614B (zh) * | 2015-10-30 | 2019-01-04 | 三菱电机株式会社 | 线放电加工机、线放电加工机的控制装置的控制方法及定位方法 |
CN109411160B (zh) * | 2017-08-16 | 2023-09-12 | 厦门海普锐科技股份有限公司 | 一种多管径自动穿套号码管装置 |
CN108380989B (zh) * | 2018-03-28 | 2024-04-23 | 北京汉飞航空科技有限公司 | 一种航空发动机整体叶盘的加工方法及设备 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62213923A (ja) * | 1986-03-14 | 1987-09-19 | Hitachi Seiko Ltd | ワイヤ放電加工機 |
JPH02152748A (ja) * | 1988-12-02 | 1990-06-12 | Mitsubishi Electric Corp | 数値制御用工作機械のストロークエンドチェック装置 |
JPH08318432A (ja) * | 1995-05-19 | 1996-12-03 | Mitsubishi Electric Corp | 放電加工機 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5766824A (en) * | 1980-10-08 | 1982-04-23 | Fanuc Ltd | Tapered processing method in wire cutting discharge processing machine |
JPS61288929A (ja) * | 1985-06-15 | 1986-12-19 | Fanuc Ltd | ワイヤカツト放電加工機 |
JPS62120919A (ja) * | 1985-11-20 | 1987-06-02 | Fanuc Ltd | ワイヤカツト放電加工方法 |
JP2578128B2 (ja) * | 1987-09-17 | 1997-02-05 | 株式会社アマダ | ワイヤ放電加工装置 |
JP2620862B2 (ja) * | 1987-10-30 | 1997-06-18 | ファナック株式会社 | ワイヤ放電加工機による大テーパ加工方法 |
JPH02279220A (ja) * | 1989-04-19 | 1990-11-15 | Mitsubishi Electric Corp | ワイヤ放電加工装置 |
US5003147A (en) * | 1989-05-12 | 1991-03-26 | Brother Kogyo Kabushiki Kaisha | Method of measuring wire guide spans and directing wire electrode perpendicularly to reference machining plane in electrical-discharge wire cutting machine |
JP3223723B2 (ja) * | 1994-09-20 | 2001-10-29 | 三菱電機株式会社 | ワイヤ放電加工装置及びその制御方法 |
DE19506775C2 (de) * | 1995-02-27 | 1997-09-25 | Agie Ag Ind Elektronik | Vorrichtung zum Führen einer Bearbeitungselektrode an einer Funkenerosionsmaschine |
DE19600538A1 (de) * | 1996-01-09 | 1997-07-10 | Agie Ag Ind Elektronik | Verfahren und Vorrichtung zur Steuerung einer Funkenerosionsmaschine |
-
1997
- 1997-12-11 JP JP9341664A patent/JPH11170117A/ja active Pending
-
1998
- 1998-12-11 US US09/355,911 patent/US6278076B1/en not_active Expired - Lifetime
- 1998-12-11 EP EP98959171A patent/EP0993894B1/en not_active Expired - Lifetime
- 1998-12-11 DE DE69842111T patent/DE69842111D1/de not_active Expired - Lifetime
- 1998-12-11 WO PCT/JP1998/005608 patent/WO1999029458A1/ja active Application Filing
- 1998-12-11 CN CN98801844A patent/CN1100639C/zh not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62213923A (ja) * | 1986-03-14 | 1987-09-19 | Hitachi Seiko Ltd | ワイヤ放電加工機 |
JPH02152748A (ja) * | 1988-12-02 | 1990-06-12 | Mitsubishi Electric Corp | 数値制御用工作機械のストロークエンドチェック装置 |
JPH08318432A (ja) * | 1995-05-19 | 1996-12-03 | Mitsubishi Electric Corp | 放電加工機 |
Non-Patent Citations (1)
Title |
---|
See also references of EP0993894A4 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000062966A1 (es) * | 1999-04-16 | 2000-10-26 | Ona Electro-Erosion, S.A. | Maquina de electroerosion por hilo |
Also Published As
Publication number | Publication date |
---|---|
EP0993894B1 (en) | 2011-01-26 |
EP0993894A4 (en) | 2004-07-14 |
JPH11170117A (ja) | 1999-06-29 |
CN1243466A (zh) | 2000-02-02 |
US6278076B1 (en) | 2001-08-21 |
CN1100639C (zh) | 2003-02-05 |
EP0993894A1 (en) | 2000-04-19 |
DE69842111D1 (de) | 2011-03-10 |
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