JPS6094225A - Machining liquid supply device in electric discharge machine - Google Patents
Machining liquid supply device in electric discharge machineInfo
- Publication number
- JPS6094225A JPS6094225A JP19999783A JP19999783A JPS6094225A JP S6094225 A JPS6094225 A JP S6094225A JP 19999783 A JP19999783 A JP 19999783A JP 19999783 A JP19999783 A JP 19999783A JP S6094225 A JPS6094225 A JP S6094225A
- Authority
- JP
- Japan
- Prior art keywords
- machining
- pump
- pressure
- machining liquid
- machining fluid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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
- B23H7/08—Wire electrodes
- B23H7/10—Supporting, winding or electrical connection of wire-electrode
- B23H7/101—Supply of working media
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)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野と従来技術
本発明は、／！に重加１１にお番ノる加工液供給装置に
関する。DETAILED DESCRIPTION OF THE INVENTION Industrial Field of Application and Prior Art The present invention is based on /! The present invention relates to a machining fluid supply device that has a load of 11 times.
放電加工は、電極と被加工物とを加工液を介してわずか
な隙間に対向させ、高い繰返し数のパルス状の放電電流
を発生させて、該放電エネルギーにより加工物を溶解し
て加工を行うものであるが、この放電加工の加工速度を
大きくづるには、加工液の加工液圧と流量を増１必要が
ある。一方、＾精度の加工を行う場合には、加工液の液
圧、流量を減する必要がある。従来の放電加工機の加工
液供給装置におけるこの加工液の加工液辻、流ｍ制御は
、放電加工領域に加工液を噴出するノズルに前二［液を
供給するポンプからの管路途中に絞り弁を設け、該絞り
弁を調節して加工液圧、流量を調節していた。そのため
、使用りるポンプは、高速加工を行うとき必要な高加工
液圧、大流量を供給づ゛るために必要な大パワーのポン
プを使用しなくてはならなかった。そして、低加工液圧
、小流量で加工を行うときは絞り弁を絞って低加工液圧
。In electric discharge machining, an electrode and a workpiece are placed facing each other with a small gap between them via a machining fluid, and a pulsed discharge current is generated at a high repetition rate.The discharge energy melts the workpiece and performs machining. However, in order to increase the machining speed of this electrical discharge machining, it is necessary to increase the machining fluid pressure and flow rate. On the other hand, when performing machining with high precision, it is necessary to reduce the hydraulic pressure and flow rate of the machining fluid. In the machining fluid supply device of a conventional electrical discharge machine, the machining fluid flow and flow control of this machining fluid is performed by squeezing the machining fluid in the middle of the pipe from the pump that supplies the fluid to the nozzle that spouts the machining fluid into the electrical discharge machining area. A valve was provided, and the processing fluid pressure and flow rate were adjusted by adjusting the throttle valve. Therefore, the pump used had to have a high power to supply the high machining fluid pressure and large flow rate necessary for high-speed machining. When machining with low machining fluid pressure and small flow rate, reduce the machining fluid pressure by tightening the throttle valve.
小流量として加工を行っていた。その際、ポンプ吐出口
に生じるへ液圧、大流ｍは、該吐出口管路に接続された
リリーフ弁によって加工液タンク１に環流させ、ポンプ
叶出口が一定圧力以上にならないようにしていＩこ。そ
のため、低圧で小流量の加工時にＪ３いても、ポンプの
消費エネルギーは高圧１人流聞のときと大して変わらず
、エネルギーロスが人さく、さらに、ポンプの消費エネ
ルギーが大きいことから、加工液の液温を上昇さυ、そ
の結果、加工粘度の低下等を招く原因となっていＩこ
。Processing was performed at a small flow rate. At this time, the hydraulic pressure and large flow m generated at the pump discharge port are returned to the machining fluid tank 1 by a relief valve connected to the discharge port pipe line, so that the pressure at the pump leaf outlet does not exceed a certain level. child. Therefore, even if J3 is used during machining with low pressure and small flow rate, the energy consumption of the pump is not much different from that when machining with one person at high pressure, and the energy loss is large. This causes the temperature to rise, resulting in a decrease in processing viscosity, etc.
.
発明の目的
本発明は、放電加工１幾におＧＪる加工液供給ポンプの
消費エネルギーロスを少なくし、放電加工条件に含Ｕて
加］二液の加工液圧を放電加工機の数値制御装置から制
御できるようにした放電加工における加工液供給装置を
提供することを目的どしでいる。Purpose of the Invention The present invention aims to reduce the energy loss of the machining fluid supply pump used in electrical discharge machining, and to control the machining fluid pressure of two fluids by including them in the electrical discharge machining conditions. The object of the present invention is to provide a machining fluid supply device for electrical discharge machining that can be controlled from the ground.
発明の４に成
本発明は、放電用Ｉｌｌにお【ノる放電加工領域に加工
液を供給する加工液供給装置において、加工液を供給す
るポンプの電動機を、数値制御Ｉ装置からの信号によっ
て出ツノ周波数が制御される可変周波数電源の出力によ
って駆動覆るようにした放電加工機における加工液供給
装置である。Fourth aspect of the invention The present invention provides a machining fluid supply device for supplying machining fluid to an electrical discharge machining area in an electrical discharge Ill, in which the electric motor of a pump for supplying machining fluid is output by a signal from a numerical control I device. This is a machining fluid supply device for an electrical discharge machine that is driven by the output of a variable frequency power source whose horn frequency is controlled.
実施例
図は、本発明の一実施例を示ず図で、１は加工液を溜め
たタンク、２は該タンク１から加工液をノズル５，６に
供給するポンプ、３は被加工物、４はワイヤ電極で、５
，６は、該被加工物３とワイヤ電ｆ！ｉ４間の放電加工
領域である間隙に加工液を噴出するノズル、７．８は、
上記各ノズル５゜６へ上記ポンプ２から加工液を供給り
−る管路１０途中に設けられた絞り弁、９は上記ポンプ
２の吐出口側の管路に接続され、上記タンクに加工液を
戻１管路に設けられた圧力調整用のリリーフ弁、１１は
、上記ポンプ２の誘導電動機に電ツノを供給Ｊる可変周
波数電源で、電圧形自励式インバータや、または電流形
自励式インバータ等が使用される。１２は、放電加工機
を制御する数値制御装置である。Embodiment The figure does not show an embodiment of the present invention, in which 1 is a tank storing machining fluid, 2 is a pump that supplies machining fluid from the tank 1 to nozzles 5 and 6, 3 is a workpiece, 4 is a wire electrode, 5
, 6 are the workpiece 3 and the wire electric f! The nozzle 7.8 that spouts machining fluid into the gap that is the electrical discharge machining area between i4 is
A throttle valve 9 is provided in the middle of the pipe line 10 for supplying the machining liquid from the pump 2 to each nozzle 5.6, and is connected to the pipe line on the discharge port side of the pump 2, so that the machining liquid is supplied to the tank. 11 is a variable frequency power supply that supplies electric horns to the induction motor of the pump 2, and is connected to a voltage-type self-excited inverter or a current-type self-excited inverter. etc. are used. 12 is a numerical control device that controls the electric discharge machine.
上記のような構成によって、放電加工を高速で行う場合
には、プログラムまたは手操作設定による数値制御装置
１２から信号に基づいて可変周波数電源１１は高周波数
の電力をポンプ２の誘導電動機に供給し、そのＩこめ、
ポンプは高速で回転し、液圧はポンプ回転数に、流量は
回転数の２乗に比例するからノズル５．６に高油圧１人
流量の加工液を供給し、ソイ１２電極４と被加工物の隙
間には高い加工液Ｆｊ］で人流吊の加工液が供給される
こととなる。With the above configuration, when electrical discharge machining is performed at high speed, the variable frequency power supply 11 supplies high frequency power to the induction motor of the pump 2 based on signals from the numerical control device 12 through program or manual settings. , that I rice,
The pump rotates at high speed, and the hydraulic pressure is proportional to the pump rotation speed, and the flow rate is proportional to the square of the rotation speed. Therefore, a high hydraulic pressure per person flow rate of machining fluid is supplied to the nozzle 5.6, and the soi 12 electrode 4 and the workpiece are A high machining fluid Fj] is supplied to the gaps between objects.
一方、高ｒＩ’ｉ ＩＭの加工の際など、低加工液圧で
小流量の加工液を供給づべきときなどは、同様に数値制
御装置１２から信号によって可変周波数電源の出力周波
数を低周波数として誘導電動機に供給し、ポンプ２を低
速で回転さμる。そのため、ポンプ２から吐出される流
ｍは小となり、液圧も低圧となり、ノズル４．５から噴
出される加工液の流儀（よ小、加工液圧は低圧となる。On the other hand, when machining a high rI'i IM or when a small flow rate of machining fluid is to be supplied at low machining fluid pressure, the output frequency of the variable frequency power supply is similarly set to a low frequency by a signal from the numerical controller 12. This is supplied to the induction motor and the pump 2 is rotated at low speed. Therefore, the flow m discharged from the pump 2 becomes small, the liquid pressure becomes low, and the flow of the machining liquid ejected from the nozzle 4.5 becomes small (very small, the machining liquid pressure becomes low pressure).
なＪ３、上記実施例では、ポンプ２の誘導電動機の速度
を可変周波数電源によって制御覆るようにしたが、誘導
電動機の一次電圧ヤニ次電圧を制御づる方式で該誘導電
動機の速度を制御してもよい。J3. In the above embodiment, the speed of the induction motor of the pump 2 is controlled by a variable frequency power supply, but it is also possible to control the speed of the induction motor by controlling the primary voltage and the secondary voltage of the induction motor. good.
発明の効果
本発明は、加工液を供給するポンプの回転速度を制御す
ることによって、ノズルに供給づる加工液の液圧、流量
を制御づるようにしたから、むだな１ネルギーを消費す
ることなく、また、常に大ぎなエネルギーが消費されな
いから、加工液の液温を上背させて加工粘度を低下させ
ることもない。Effects of the Invention The present invention controls the hydraulic pressure and flow rate of the machining fluid supplied to the nozzle by controlling the rotational speed of the pump that supplies the machining fluid, thereby eliminating the need to waste energy. Moreover, since a large amount of energy is not always consumed, the temperature of the processing fluid does not rise and the processing viscosity does not decrease.
また、可変周波数電源を使用しているので、使用する電
力の周波数が５０Ｈｚ 、６０１−１ｚにかかわらず、
同一ポンプ（電動機）を使用りることができ、５０１−
Ｉ Ｚ用、６０Ｈｚ用と区別して生産する必要はなく、
生産管理がしやす′くなる。さらに、６０１−１ ｚ用
に電動機を選択すれば、電動機そのものの型格が小さく
て演むという利点がある。In addition, since a variable frequency power supply is used, regardless of whether the frequency of the power used is 50Hz or 601-1z,
The same pump (electric motor) can be used, 501-
There is no need to produce separate products for IZ and 60Hz.
Production management becomes easier. Furthermore, if an electric motor is selected for the 601-1z, there is an advantage that the size of the electric motor itself is small.
図は、本発明の一実施例の加工液供給装置の説明図であ
る。
１・・・タンク、２・・・ポンプ、３・・・被加工物、
４・・・ワイヤ電極、５．６・・・ノズル、７，８・・
・絞り弁、９・・・リリーフ弁、１０・・・管路、１１
・・・可変周波数電源、１２・・・数値制御ｖＲｉｆｆ
ｉ。
特許出願人
フン・チック 株式会社The figure is an explanatory diagram of a machining fluid supply device according to an embodiment of the present invention. 1...tank, 2...pump, 3...workpiece,
4...Wire electrode, 5.6...Nozzle, 7,8...
- Throttle valve, 9...Relief valve, 10...Pipe line, 11
...Variable frequency power supply, 12...Numerical control vRiff
i. Patent applicant Hung Chik Co., Ltd.
Claims (3)
給する加工液供給装置において、加工液を供給“りるポ
ンプの電動機を、数値制御装置からの信号によって出力
周波数が制御される可変周波数電源の出力によって駆動
す゛るようにした放電加工機における加工液供給装置。(1) In the machining fluid supply device that supplies machining fluid to the electrical discharge machining area of the electrical discharge machine, the output frequency of the motor of the pump that supplies the machining fluid is controlled by a signal from the numerical control device. A machining fluid supply device for an electrical discharge machine that is driven by the output of a variable frequency power supply.
て指令される特許請求の範囲第１項記載の放電加工機に
ａ月ノる加工液供給装置。(2) A machining fluid supply device for an electrical discharge machine according to claim 1, wherein the signals from the above-mentioned control unit are commanded by a program.
令される特許請求の範囲第１項記載の放電加工領域にお
りる加工液供給装置。(3) A machining fluid supply device for an electrical discharge machining area according to claim 1, wherein the signal from the numerical control device is manually commanded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19999783A JPS6094225A (en) | 1983-10-27 | 1983-10-27 | Machining liquid supply device in electric discharge machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19999783A JPS6094225A (en) | 1983-10-27 | 1983-10-27 | Machining liquid supply device in electric discharge machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6094225A true JPS6094225A (en) | 1985-05-27 |
Family
ID=16417079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19999783A Pending JPS6094225A (en) | 1983-10-27 | 1983-10-27 | Machining liquid supply device in electric discharge machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6094225A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62203725A (en) * | 1986-02-28 | 1987-09-08 | Japax Inc | Supply device for electric machining fluid |
| WO1991000160A1 (en) * | 1989-06-29 | 1991-01-10 | Fanuc Ltd | Wire cut electric discharge machining device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5639881B2 (en) * | 1978-05-02 | 1981-09-17 | ||
| JPS58109230A (en) * | 1981-12-22 | 1983-06-29 | Mitsubishi Electric Corp | Wire cut electric spark machining device |
-
1983
- 1983-10-27 JP JP19999783A patent/JPS6094225A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5639881B2 (en) * | 1978-05-02 | 1981-09-17 | ||
| JPS58109230A (en) * | 1981-12-22 | 1983-06-29 | Mitsubishi Electric Corp | Wire cut electric spark machining device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62203725A (en) * | 1986-02-28 | 1987-09-08 | Japax Inc | Supply device for electric machining fluid |
| WO1991000160A1 (en) * | 1989-06-29 | 1991-01-10 | Fanuc Ltd | Wire cut electric discharge machining device |
| US5187342A (en) * | 1989-06-29 | 1993-02-16 | Fanuc Ltd | Wire cut electric discharge machine |
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