WO2015125258A1 - ワイヤ放電加工装置 - Google Patents
ワイヤ放電加工装置 Download PDFInfo
- Publication number
- WO2015125258A1 WO2015125258A1 PCT/JP2014/054093 JP2014054093W WO2015125258A1 WO 2015125258 A1 WO2015125258 A1 WO 2015125258A1 JP 2014054093 W JP2014054093 W JP 2014054093W WO 2015125258 A1 WO2015125258 A1 WO 2015125258A1
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- WIPO (PCT)
- Prior art keywords
- wire electrode
- guide
- wire
- discharge machining
- electric discharge
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- 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
- B23H7/08—Wire electrodes
- B23H7/10—Supporting, winding or electrical connection of wire-electrode
- B23H7/102—Automatic wire threading
Definitions
- the present invention relates to a wire electric discharge machining apparatus, and more particularly to wire electrode connection.
- the diameter of the cut end portion of the wire electrode cut by heat or a cutter below the upper wire electrode guide portion is not larger than the diameter of the wire electrode.
- the nozzle and the wire electrode are cut in a dry state to obtain a good cut end shape, and the cut end portion easily passes through the lower wire electrode guide portion. It does not pass through electrodes.
- the present invention has been made in view of the above, and an object thereof is to obtain a wire electric discharge machining apparatus capable of passing an ultrafine wire electrode through an upper wire electrode guide portion.
- the present invention provides a feed roller that feeds a wire electrode, an upper guide pipe that guides the wire electrode downward, and air is sent downward into the upper guide pipe.
- An upper wire electrode feed section having a guide pipe head, an upper supply electron that contacts the wire electrode and supplies a current to the wire electrode, an upper guide disposed on the upper side of the upper supply electron, and a lower side
- An upper guide comprising a lower guide disposed so as to guide the wire electrode so as to contact the upper power supply, an upper machining liquid nozzle for spraying a machining liquid onto a workpiece during electric discharge machining, and the upper machining liquid nozzle
- An upper wire electrode guide part having an upper die that positions a wire electrode that is disposed at an ejection port of Characterized in that a suction device which sucks air from the lower wire electrode guide portion lower guide.
- the wire electric discharge machining apparatus has an effect that an extremely fine wire electrode can be passed through the upper wire electrode guide portion.
- FIG. 1 is a schematic diagram showing a wire electrode traveling system of an embodiment of a wire electric discharge machining apparatus according to the present invention.
- FIG. 2 is a longitudinal sectional view of the upper wire electrode guide portion of the embodiment.
- FIG. 3 is an enlarged vertical cross-sectional view of the upper wire electrode guide portion of the embodiment in a phase different from that of FIG.
- FIG. 4 is a cross-sectional view showing the lower wire electrode guide portion and the lower wire electrode feed portion of the embodiment.
- FIG. 5 is a wire electrode feed time chart of the upper wire electrode guide portion of the embodiment.
- FIG. 1 is a schematic view showing a wire electrode traveling system of an embodiment of a wire electric discharge machining apparatus according to the present invention
- FIG. 2 is a longitudinal sectional view of an upper wire electrode guide portion of the embodiment
- FIG. 3 is an enlarged vertical sectional view of the upper wire electrode guide portion of the embodiment different from that of FIG. 2, and
- FIG. 4 shows the lower wire electrode guide portion and the lower wire electrode feed portion of the embodiment.
- FIG. 5 is a cross-sectional view, and FIG. 5 is a wire electrode feed time chart of the upper wire electrode guide portion of the embodiment.
- the wire electric discharge machining apparatus 100 of the embodiment includes a wire electrode holding unit 10, an upper wire electrode feeding unit 30, an upper wire electrode guide unit 40, a lower wire electrode guide unit 60, and a lower part.
- a wire electrode feed unit 70 and a wire electrode recovery unit 80 are provided.
- the wire electrode holding unit 10 includes a bobbin 11 that winds and holds the wire electrode 1 and pulleys 12a, 12b, and 12c that change the feeding direction of the wire electrode 1.
- the upper wire electrode feeding section 30 guides the wire electrode 1 to the lower upper wire electrode guide section 40, the feed roller 21 that feeds the wire electrode 1, pinch rollers 22 a and 22 b that wind the wire electrode 1 around the feed roller 21, and the wire electrode 1.
- An upper guide pipe 31 and a guide pipe head 32 for sending air downward into the upper guide pipe 31 are provided.
- the upper wire electrode guide part 40 is in contact with the wire electrode 1 and supplies an electric current to the wire electrode 1, and an upper side disposed above the upper supply electron 42.
- the upper guide 44 which is composed of a guide 44a and a lower guide 44b arranged on the lower side, guides the wire electrode 1 so as to contact the upper power supply 42, and is arranged on the upper side of the upper guide 44a, and the lower end of the upper guide pipe 31.
- the wire track 49 into which the portion is inserted and the lower guide 44b are disposed below, and the wire electrode 1 is sent downward and the tip thereof is sent to the lower wire electrode guide portion 60 through the processing start hole of the workpiece 51.
- a cutter or a cutting unit for cutting the wire electrode 1 with Joule heat due to electric current is disposed above the upper wire electrode guide portion 40.
- the cutting unit is movable in the lateral direction.
- the upper guide pipe 31 is raised to create a gap between the lower end of the upper guide pipe 31 and the wire track 49, and the cutting unit is moved into the gap to cut the wire electrode 1.
- the cutting unit is moved laterally, the upper guide pipe 31 is lowered, and the lower end portion is inserted into the wire track 49.
- the lower wire electrode guide part 60 is disposed below the upper wire electrode guide part 40, and a lower machining liquid nozzle 66 that sprays a machining liquid onto the workpiece 51 during electric discharge machining, A lower die 63 disposed in the lower machining liquid nozzle 66 for positioning the wire electrode 1 during electric discharge machining, and a lower portion disposed below the lower die 63 for contacting the wire electrode 1 and supplying current to the wire electrode 1
- the lower guide 64 includes a power supply 62, an upper guide 64 b disposed on the upper side of the lower power supply 62, and a lower guide 64 a disposed on the lower side, and guides the wire electrode 1 so as to contact the lower power supply 62. And a lower guide block 61 for holding them.
- the lower wire electrode feeding section 70 has a lower roller 72 that changes the feeding direction of the wire electrode 1 and a negative pressure for feeding the wire electrode 1 from the lower die 63 to the lower guide 64.
- An aspirator 73 that ejects a machining fluid that is generated and sends the wire electrode 1 to the wire electrode collection unit 80, a lower guide pipe 74 that guides the wire electrode 1 to the wire electrode collection unit 80, and a lower roller block 71 that holds them. And have.
- the wire electrode collection unit 80 has wire collection rollers 81a and 81b that hold and pull the wire electrode 1 and a pipe end 82 that separates the wire electrode 1 and the processing liquid.
- the wire electric discharge machining apparatus 100 generates a discharge by applying a pulse voltage between the wire electrode 1 and the workpiece 51 while running the wire electrode 1 in the wire electrode running system.
- the upper wire electrode guide part 40 and the lower wire electrode guide part 60 are moved relative to each other in a sawtooth shape to process the workpiece 51 into a desired shape.
- the upper guide block 41 of the upper wire electrode guide part 40 is formed with a suction passage 41a communicating with the lower side of the lower guide 44b.
- a suction device 48 is connected to the suction passage 41a. The suction device 48 sucks air in the wire electrode passage.
- the upper guide block 41 of the upper wire electrode guide section 40 is provided with a nozzle passage 98 connected to the jet nozzle 45, and the nozzle passage 98 is connected to the jet nozzle via a switching valve 97.
- a liquid pump 96 for ejecting the machining fluid from 45 is connected.
- the liquid pump 96 sucks the processing liquid from the processing liquid tank 99.
- a suction device 95 that sucks air in the wire electrode passage from the lower side of the upper die 43 is connected to the nozzle passage 98 via a switching valve 97.
- the suction device 95 may be connected to the suction passage 41a shown in FIG. 3 via a switching valve, and may be used for both the suction of the suction passage 41a and the suction of the nozzle passage 98.
- a sub guide 47a is disposed as a member that fills the gap between them.
- an adapter 47b is disposed as a member that fills the gap between them. Since the member for filling the gap is arranged, when the air in the wire electrode passage is sucked by the suction devices 48 and 95, the air outside the passage is sucked and the suction efficiency is not lowered.
- the suction devices 48 and 95, the liquid pump 96, the switching valve 97, a pulse motor (not shown) that rotates the feed roller 21, and an air pump (not shown) that sends air to the guide pipe head 32 are controlled by the NC device 90 of the wire electric discharge machining apparatus 100.
- the control unit 92 includes a pulse motor (not shown) that rotates the feed roller 21, an air pump (not shown) that sends air to the guide pipe head 32, and an aspirator 48. Start. The tip of the wire electrode 1 located at the lower part of the upper guide pipe 31 at the start of connection is sent to the feed roller 21 (feed speed at the time of connection: 5000 mm / min) and approaches the upper guide 44a.
- the determination unit 91 determines the position of the tip end portion of the wire electrode 1 from the rotation amount (wire electrode feed amount) of the feed roller 21, and instructs the control unit 92 when the tip end portion of the wire electrode 1 reaches the upper guide 44a. Then, the suction of the suction device 48 is stopped, the suction by the suction device 95 is started, and the air in the wire electrode passage is sucked from the lower side of the upper die 43. At this time, the rotation of the feed roller 21 is slowed or stopped.
- the suction by the suction device 95 is stopped, the switching valve 97 is switched, the liquid pump 96 is connected to the nozzle passage 98, and the processing liquid to the nozzle passage 98 is supplied.
- the feed roller 21 is rotated and the wire electrode 1 is sent out.
- the liquid pump 96 sucks the processing liquid from the processing liquid tank 99.
- the machining liquid ejected from the jet nozzle 45 is ejected downward from the upper machining liquid nozzle 46, sucks the wire electrode 1 and sends it downward, and the lower end of the wire electrode guide passes through the machining start hole of the workpiece 51. Send to part 60.
- a sensor (not shown) detects this and sends a detection signal to the determination unit 91 of the NC device 90.
- the determination unit 91 determines the position of the tip of the wire electrode 1 and instructs the control unit 92 to stop the supply of the processing liquid to the jet nozzle 45 by the liquid pump 96.
- the wire recovery rollers 81a and 81b Since the wire electrode feed speed is faster than the feed speed of the feed roller 21, the feed roller 21 is pulled to increase the rotational speed.
- the determination unit 91 of the NC device 90 determines this and issues a carry-out completion command. After a certain amount of play time has elapsed, the connection command and the carry-out completion command are canceled, and a series of automatic wire connection work for the wire electrode 1 is completed.
- the upper wire electrode guide portion 40 is provided with the suction device 48 for sucking air from the lower side of the lower guide 44b of the upper wire electrode guide portion 40.
- a very fine wire electrode 1 can be passed through.
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- 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)
Abstract
Description
図1は、本発明に係るワイヤ放電加工装置の実施の形態のワイヤ電極走行系を示す模式図であり、図2は、実施の形態の上部ワイヤ電極ガイド部の縦断面図であり、図3は、実施の形態の上部ワイヤ電極ガイド部の図2とは別位相の拡大縦断面図であり、図4は、実施の形態の下部ワイヤ電極ガイド部及び下部ワイヤ電極送り部を示す断面図であり、図5は、実施の形態の上部ワイヤ電極ガイド部のワイヤ電極送りタイムチャートである。
Claims (5)
- ワイヤ電極を送り出す送りローラと、前記ワイヤ電極を下方へ案内する上部案内パイプと、該上部案内パイプ内にエアーを下向きに送る案内パイプヘッドと、を有する上部ワイヤ電極送り部と、
前記ワイヤ電極に接触して該ワイヤ電極に電流を供給する上部給電子と、該上部給電子の上側に配置された上側ガイド及び下側に配置された下側ガイドからなり前記ワイヤ電極が前記上部給電子に接触するようにガイドする上部ガイドと、放電加工中に被加工物へ加工液を吹きかける上部加工液ノズルと、該上部加工液ノズルの噴出口に配置され放電加工中のワイヤ電極を位置決めする上部ダイスと、を有する上部ワイヤ電極ガイド部と、
を備えるワイヤ放電加工装置において、
前記上部ワイヤ電極ガイド部の下側ガイドの下側からエアーを吸引する吸引器を設けたことを特徴とするワイヤ放電加工装置。 - 前記上部ワイヤ電極ガイド部の上部ダイスの下側からエアーを吸引する吸引器を設けたことを特徴とする請求項1に記載のワイヤ放電加工装置。
- 前記上部ワイヤ電極ガイド部は、前記下側ガイドの下側に配置され前記ワイヤ電極を下方へ送るための加工液を噴出させるジェットノズルを備え、前記吸引器は、前記ジェットノズルに接続する管に接続され該管を介して前記上部ダイスの下側からエアーを吸引することを特徴とする請求項2に記載のワイヤ放電加工装置。
- 前記上側ガイドと前記上部給電子との間及び前記下側ガイドと前記上部ダイスとの間に、間隙を埋める部材を配置したことを特徴とする請求項2に記載のワイヤ放電加工装置。
- 送りローラのワイヤ電極送り出し量に基づいて、ワイヤ電極の先端が上部ワイヤ電極ガイド部の下側ガイドに到達したことを判断する判断部と、
前記判断部の判断に基づいて、前記上部ワイヤ電極ガイド部の下側ガイドの下側からエアーを吸引する吸引器の吸引を停止させ、上部ワイヤ電極ガイド部の上部ダイスの下側からエアーを吸引する吸引器の吸引を開始させる制御部と、
を有するNC装置を備えることを特徴とするワイヤ放電加工装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2014/054093 WO2015125258A1 (ja) | 2014-02-20 | 2014-02-20 | ワイヤ放電加工装置 |
CN201480075885.XA CN106029274B (zh) | 2014-02-20 | 2014-02-20 | 线放电加工装置 |
JP2014545024A JP5784243B1 (ja) | 2014-02-20 | 2014-02-20 | ワイヤ放電加工装置 |
DE112014006240.5T DE112014006240B4 (de) | 2014-02-20 | 2014-02-20 | Drahterosionsgerät |
Applications Claiming Priority (1)
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PCT/JP2014/054093 WO2015125258A1 (ja) | 2014-02-20 | 2014-02-20 | ワイヤ放電加工装置 |
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WO2015125258A1 true WO2015125258A1 (ja) | 2015-08-27 |
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PCT/JP2014/054093 WO2015125258A1 (ja) | 2014-02-20 | 2014-02-20 | ワイヤ放電加工装置 |
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JP (1) | JP5784243B1 (ja) |
CN (1) | CN106029274B (ja) |
DE (1) | DE112014006240B4 (ja) |
WO (1) | WO2015125258A1 (ja) |
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JP6647604B1 (ja) | 2019-02-25 | 2020-02-14 | ニッタモールド株式会社 | ロックファスナ具 |
KR102516531B1 (ko) | 2019-03-29 | 2023-04-03 | 세이부덴키 가부시키가이샤 | 와이어 전극 송출 장치 및 와이어 전극 송출 방법 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5417597A (en) * | 1977-07-10 | 1979-02-08 | Toshihiko Furukawa | Wire cut electrospark machining device provided with automatic wire set mechanism |
JPH04504086A (ja) * | 1989-03-17 | 1992-07-23 | フオート・ウエイン・ワイヤ・ダイ・インコーポレーテツド | 放電加工装置の移動線電極案内組立品 |
JPH07136853A (ja) * | 1993-11-22 | 1995-05-30 | Makino Milling Mach Co Ltd | ワイヤ放電加工機 |
JP2000005934A (ja) * | 1998-06-18 | 2000-01-11 | Seibu Electric & Mach Co Ltd | ワイヤ放電加工機におけるワイヤ送り装置 |
Family Cites Families (5)
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JP2644540B2 (ja) | 1988-08-08 | 1997-08-25 | 株式会社アマダ | ワイヤカット放電加工機における自動結線方法 |
JP3097793B2 (ja) * | 1993-06-15 | 2000-10-10 | 矢崎総業株式会社 | 放電加工機用ワイヤの誘導装置を備えたワイヤ切断機 |
CN2626656Y (zh) * | 2003-05-20 | 2004-07-21 | 徕通科技股份有限公司 | 线切割机的废线自动排出装置 |
CN102120279A (zh) * | 2010-01-07 | 2011-07-13 | 台湾线割科技股份有限公司 | 线切割机的自动排线装置及其自动排线方法 |
JP5225516B1 (ja) * | 2011-10-13 | 2013-07-03 | 三菱電機株式会社 | ワイヤ電極送り装置およびワイヤ放電加工機 |
-
2014
- 2014-02-20 DE DE112014006240.5T patent/DE112014006240B4/de active Active
- 2014-02-20 WO PCT/JP2014/054093 patent/WO2015125258A1/ja active Application Filing
- 2014-02-20 JP JP2014545024A patent/JP5784243B1/ja active Active
- 2014-02-20 CN CN201480075885.XA patent/CN106029274B/zh active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5417597A (en) * | 1977-07-10 | 1979-02-08 | Toshihiko Furukawa | Wire cut electrospark machining device provided with automatic wire set mechanism |
JPH04504086A (ja) * | 1989-03-17 | 1992-07-23 | フオート・ウエイン・ワイヤ・ダイ・インコーポレーテツド | 放電加工装置の移動線電極案内組立品 |
JPH07136853A (ja) * | 1993-11-22 | 1995-05-30 | Makino Milling Mach Co Ltd | ワイヤ放電加工機 |
JP2000005934A (ja) * | 1998-06-18 | 2000-01-11 | Seibu Electric & Mach Co Ltd | ワイヤ放電加工機におけるワイヤ送り装置 |
Also Published As
Publication number | Publication date |
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JPWO2015125258A1 (ja) | 2017-03-30 |
DE112014006240T5 (de) | 2016-11-03 |
DE112014006240B4 (de) | 2019-07-11 |
JP5784243B1 (ja) | 2015-09-24 |
CN106029274B (zh) | 2017-09-29 |
CN106029274A (zh) | 2016-10-12 |
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