WO2016199301A1 - 放電加工電源装置 - Google Patents
放電加工電源装置 Download PDFInfo
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- WO2016199301A1 WO2016199301A1 PCT/JP2015/067067 JP2015067067W WO2016199301A1 WO 2016199301 A1 WO2016199301 A1 WO 2016199301A1 JP 2015067067 W JP2015067067 W JP 2015067067W WO 2016199301 A1 WO2016199301 A1 WO 2016199301A1
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- WIPO (PCT)
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- power supply
- current
- voltage
- electric discharge
- discharge machining
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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
- B23H1/00—Electrical discharge machining, i.e. removing metal with a series of rapidly recurring electrical discharges between an electrode and a workpiece in the presence of a fluid dielectric
- B23H1/02—Electric circuits specially adapted therefor, e.g. power supply, control, preventing short circuits or other abnormal discharges
Definitions
- FIG. 2 is a diagram for explaining the operation of the electric discharge machining power supply apparatus according to the first embodiment.
- the first power supply unit 5 has a first discharge voltage application pattern in which the electrode 2 is on the positive electrode side and the workpiece 3 is on the negative electrode side. applying the voltages V 1 to the path A1.
- the electric discharge machining power supply device 1 supplies a current from the second power supply unit 8 and the transformer 6 to the second path A2, so that the rough machining by the third power supply unit 10 is performed from the discharge by the first power supply unit 5.
- the current can be supplied to the gap 4 before the current I 5 is supplied, and the energy efficiency can be improved.
- FIG. 11 is a diagram for explaining the operation of the electric discharge machining power supply apparatus according to the first embodiment.
- the first power supply unit 5 uses the second discharge voltage application pattern in which the workpiece 3 is on the positive electrode side and the electrode 2 is on the negative electrode side. the voltage V 11 is applied to the path A1.
- the electric discharge machining power supply device 1A applies a voltage to the first path A1 connected to the electrode 2 for passing a current between the workpiece 3 and the gap 4 formed by the workpiece 3 and the electrode 2.
- Current flowing from the first power supply unit 5 to the stray capacitance 7 of the second path A2 and the transformer 6 disposed on the second path A2 connected to the gap 4 A second power supply unit 8 that applies a voltage in a direction to suppress the current to the second path A2 via the transformer 6, and a control unit 9 that controls the second power supply unit 8.
- the electrical discharge machining power supply device 1A performs finishing machining. Therefore, the connection object 12 connected to the second path A2 may be the third power supply unit 10 or another object. Other examples include various substrates for detecting the state of the gap 4 or the case of an electric discharge machine.
- the electric discharge machining power supply device 1A can accelerate the rise of the interelectrode voltage V.
- electric discharge machining power supply apparatus 1A as compared with the case of not provided with the second power supply unit 8 and the transformer 6, suppressing the peak of the current between the electrodes I between the timing t 11 to the timing t 12 it is possible, it is possible to shorten the electrode current I flows time from the timing t 11 to the timing t 12.
- the electric discharge machining power supply device 1A can reduce the amount of energy per discharge by keeping the peak of the interelectrode current I low and shortening the time during which the interelectrode current I flows. Thereby, 1 A of electric discharge machining power supplies can make the surface roughness of the to-be-processed surface fine after finishing.
- the toroidal transformer 21 includes a toroidal core 21a.
- a winding 21b is wound around the toroidal core 21a.
- the winding 21 b is connected to the second power supply unit 8.
- the cable C3 is passed through the opening 21c of the toroidal core 21a.
- FIG. 18 is a diagram illustrating mounting of the electric discharge machining power supply apparatus according to the third embodiment.
- the electrode 2 is stretched between a lower block 23a and an upper block 23b arranged in the processing tank 22.
- the workpiece 3 is also disposed in the processing tank 22.
- a highly insulating liquid is stored in the processing tank 22. Examples of the highly insulating liquid include deionized water or oil.
- the toroidal core 21 is disposed at a location near the lower block 23 a in the processing tank 22.
- the electric discharge machining power supply apparatus 1C according to the fourth embodiment performs finishing as with the electric discharge machining power supply apparatus 1A according to the second embodiment.
- the fourth power supply unit 31 is connected to the primary winding 32 a of the second transformer 32.
- the secondary winding 32b of the second transformer 32 is connected to the cables C1 and C2.
- the tertiary winding 32 c of the second transformer 32 is connected to the primary winding 6 a of the transformer 6.
- the fourth power source 31 When the fourth power source 31 outputs a voltage to the primary winding 32a of the second transformer 32, the secondary winding 32b and the voltage is induced in, together with the voltage V 21 is applied to the first path A1 , is induced a voltage in the tertiary winding 32c, the voltage V 22 is applied to the second path A2.
- the fourth power supply unit 31, the primary winding 32a and the secondary winding 32b of the second transformer 32 correspond to the first power supply unit 5 of the electric discharge machining power supply apparatus 1A according to the second embodiment. Further, the fourth power supply unit 31, the primary winding 32a and the tertiary winding 32c of the second transformer 32 correspond to the second power supply unit 8 of the electric discharge machining power supply device 1A according to the second embodiment.
- the electrical discharge machining power supply device 1D according to the fifth embodiment performs rough machining in the same manner as the electrical discharge machining power supply device 1 according to the first embodiment.
- the electrical discharge machining power supply device 1D includes a first winding 32c between the tertiary winding 32c of the second transformer 32 and the primary winding 6a of the transformer 6. 2 control part 41 is further provided.
- the processing of the second control unit 41 is the same as the processing of the control unit 9 of the electric discharge machining power supply device 1 according to the first embodiment shown in the flowchart of FIG.
- the electric discharge machining power supply device 1D has the same effect as the electric discharge machining power supply device 1 according to the first embodiment.
- FIG. 21 is a diagram illustrating a circuit configuration of the electric discharge machining power supply device according to the sixth embodiment.
- symbol is attached
- the electric discharge machining power supply device 1E has the same effect as the electric discharge machining power supply device 1C according to the fourth embodiment.
- the electric discharge machining power supply device 1E includes a toroidal transformer 21 instead of the transformer 6, and includes a second toroidal transformer 33 instead of the second transformer 32.
- the toroidal transformer 21 and the second toroidal transformer 33 have a high degree of freedom of attachment. Therefore, the electric discharge machining power supply device 1E has an effect that the mounting becomes easy.
- the configuration described in the above embodiment shows an example of the contents of the present invention, and can be combined with another known technique, and can be combined with other configurations without departing from the gist of the present invention. It is also possible to omit or change the part.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
Description
図1は、実施の形態1にかかる放電加工電源装置の回路構成を示す図である。放電加工電源装置1は、被加工物3との間に電流を流す電極2と、被加工物3と電極2とで構成される極間4に接続された第1の経路A1に電圧を印加する第1の電源部5と、極間4に接続された第2の経路A2に配置されたトランス6と、第1の電源部5から第2の経路A2の浮遊容量7に流入する電流を抑制する方向の電圧を、トランス6を介して第2の経路A2に印加する第2の電源部8と、第2の電源部8を制御する制御部9と、を備える。
図13は、実施の形態2にかかる放電加工電源装置の回路構成を示す図である。なお、実施の形態1と同様の構成要素には、同一の符号を付して説明を省く。
図17は、実施の形態3にかかる放電加工電源装置の回路構成を示す図である。なお、実施の形態1及び実施の形態2と同様の構成要素には、同一の符号を付して説明を省く。
図19は、実施の形態4にかかる放電加工電源装置の回路構成を示す図である。なお、実施の形態1から実施の形態3までと同様の構成要素には、同一の符号を付して説明を省く。
図20は、実施の形態5にかかる放電加工電源装置の回路構成を示す図である。なお、実施の形態1から実施の形態4までと同様の構成要素には、同一の符号を付して説明を省く。
図21は、実施の形態6にかかる放電加工電源装置の回路構成を示す図である。なお、実施の形態1から実施の形態5までと同様の構成要素には、同一の符号を付して説明を省く。
Claims (7)
- 被加工物との間に電流を流す電極と、
前記被加工物と前記電極とで構成される極間に接続された第1の経路に電圧を印加する第1の電源部と、
前記極間に接続された第2の経路に配置されたトランスと、
前記第1の電源部から前記第2の経路の浮遊容量に流入する電流を抑制する方向の電圧を、前記トランスを介して前記第2の経路に印加する第2の電源部と、
を備えることを特徴とする放電加工電源装置。 - 前記第1の電源部から前記第2の経路の浮遊容量に流入する電流を抑制する方向の電圧を前記第2の経路に印加させるように前記第2の電源部を制御する制御部を更に備えることを特徴とする請求項1に記載の放電加工電源装置。
- 前記第1の電源部が印加する電圧によって前記極間で放電が発生したら、前記第2の経路を介して前記極間に荒加工電流を流す第3の電源部を更に備え、
前記制御部は、
前記荒加工電流が増加する期間では、前記荒加工電流を増加する方向の電圧を前記第2の経路に印加させるように前記第2の電源部を制御し、前記荒加工電流が減少する期間では、前記荒加工電流を抑制する方向の電圧を前記第2の経路に印加させるように前記第2の電源部を制御することを特徴とする請求項2に記載の放電加工電源装置。 - 前記トランスは、トロイダルトランスであることを特徴とする請求項1に記載の放電加工電源装置。
- 前記トロイダルトランスは、前記極間が配置されている加工槽内に配置されていることを特徴とする請求項4に記載の放電加工電源装置。
- 前記第1の電源部は、第4の電源部、第2のトランスの1次巻線及び2次巻線で構成され、
前記第2の電源部は、前記第4の電源部、前記第2のトランスの1次巻線及び3次巻線で構成されていることを特徴とする請求項1に記載の放電加工電源装置。 - 前記トランス及び前記第2のトランスの各々は、トロイダルトランスであることを特徴とする請求項6に記載の放電加工電源装置。
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DE112015006523.7T DE112015006523B4 (de) | 2015-06-12 | 2015-06-12 | Stromversorgungsvorrichtung für eine Funkenerosionsbearbeitungsvorrichtung |
JP2015560458A JP5940229B1 (ja) | 2015-06-12 | 2015-06-12 | 放電加工電源装置 |
PCT/JP2015/067067 WO2016199301A1 (ja) | 2015-06-12 | 2015-06-12 | 放電加工電源装置 |
CN201580080675.4A CN107635705B (zh) | 2015-06-12 | 2015-06-12 | 放电加工电源装置 |
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JP2020066079A (ja) * | 2018-10-23 | 2020-04-30 | ファナック株式会社 | ワイヤ放電加工機および放電加工方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5233148A (en) * | 1990-11-29 | 1993-08-03 | Mitsubishi Denki K.K. | Electrical discharge machine with machining gap voltage control |
JPH07276142A (ja) * | 1994-03-31 | 1995-10-24 | Makino Milling Mach Co Ltd | 放電加工機の電源装置 |
JP5323283B1 (ja) * | 2012-10-30 | 2013-10-23 | 三菱電機株式会社 | 放電加工装置 |
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JPH04135119A (ja) * | 1990-07-20 | 1992-05-08 | Toyota Motor Corp | 放電加工装置 |
CN1184043C (zh) * | 2000-05-15 | 2005-01-12 | 三菱电机株式会社 | 放电加工用电源装置 |
WO2013080347A1 (ja) * | 2011-11-30 | 2013-06-06 | 三菱電機株式会社 | 放電加工機用電源装置 |
WO2014162822A1 (ja) * | 2013-04-04 | 2014-10-09 | 西部電機株式会社 | 放電加工装置、放電加工方法及び設計方法 |
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Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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US5233148A (en) * | 1990-11-29 | 1993-08-03 | Mitsubishi Denki K.K. | Electrical discharge machine with machining gap voltage control |
JPH07276142A (ja) * | 1994-03-31 | 1995-10-24 | Makino Milling Mach Co Ltd | 放電加工機の電源装置 |
JP5323283B1 (ja) * | 2012-10-30 | 2013-10-23 | 三菱電機株式会社 | 放電加工装置 |
Cited By (1)
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JP2020066079A (ja) * | 2018-10-23 | 2020-04-30 | ファナック株式会社 | ワイヤ放電加工機および放電加工方法 |
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DE112015006523B4 (de) | 2019-06-13 |
JPWO2016199301A1 (ja) | 2017-06-22 |
CN107635705A (zh) | 2018-01-26 |
JP5940229B1 (ja) | 2016-06-29 |
DE112015006523T5 (de) | 2018-02-15 |
CN107635705B (zh) | 2019-05-10 |
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