JP2709670B2 - Electric discharge machine - Google Patents
Electric discharge machineInfo
- Publication number
- JP2709670B2 JP2709670B2 JP4051476A JP5147692A JP2709670B2 JP 2709670 B2 JP2709670 B2 JP 2709670B2 JP 4051476 A JP4051476 A JP 4051476A JP 5147692 A JP5147692 A JP 5147692A JP 2709670 B2 JP2709670 B2 JP 2709670B2
- Authority
- JP
- Japan
- Prior art keywords
- processing
- machining
- supply device
- working fluid
- processing liquid
- 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.)
- Expired - Lifetime
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- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、放電加工装置に係り、
さらに詳しくは、加工液が外部にあふれ出すことがない
独立した複数の加工液供給装置を備えた放電加工装置に
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric discharge machine,
More specifically, the present invention relates to an electric discharge machining apparatus provided with a plurality of independent machining fluid supply devices that prevent the machining fluid from overflowing to the outside.
【０００２】[0002]
【従来の技術】図７は従来の形彫り放電加工装置の一例
を示す斜視図である。１は形彫り放電加工装置で、２は
ベッド、３，４はベッド２上に設けられたサドル及びテ
ーブル、５はテーブル４上に取付けられた加工槽であ
る。６は加工槽５の内部に貯留された加工液、７は被加
工物（図示せず）を加工槽５内に固定するための板状の
部材からなるテーブル定盤である。８はベッド２からの
びたコラム、９はコラム８に取付けられたヘッド、１０
はヘッド９に固定された電極取付定盤、１１は電極取付
定盤１０を介してヘッド９に固定された加工用電極であ
る。なお、１２はＹ軸駆動用モータ、１３はＸ軸駆動用
モータである。2. Description of the Related Art FIG. 7 is a perspective view showing an example of a conventional die sinking electric discharge machine. Reference numeral 1 denotes a sinker electric discharge machine, 2 denotes a bed, 3 and 4 denote saddles and tables provided on the bed 2, and 5 denotes a machining tank mounted on the table 4. Reference numeral 6 denotes a processing liquid stored in the processing tank 5, and reference numeral 7 denotes a table base made of a plate-like member for fixing a workpiece (not shown) in the processing tank 5. 8 is a column extending from the bed 2, 9 is a head attached to the column 8, 10
Denotes an electrode mounting plate fixed to the head 9, and 11 denotes a processing electrode fixed to the head 9 via the electrode mounting plate 10. Reference numeral 12 denotes a Y-axis driving motor, and 13 denotes an X-axis driving motor.
【０００３】図８は図７に示したの形彫り放電加工装置
１の加工液の流れを示す模式図である。ところで、放電
加工に用いられる加工液は一般に水系または炭化水素系
であり、通常一種類からなる。しかし、図８に示すよう
に、加工の状態によっては使用する加工液の種類を切り
替えた方がよい場合もある。例えば、通常、荒加工領域
では炭化水素系の加工液を用い、仕上げ領域では炭化水
素系の加工液に微粉末を混入した加工液を用いると仕上
げ加工が安定して、通常の炭化水素系の加工液では不可
能な大面積鏡面加工が可能になる。また水系の加工液を
用いる場合にも、加工によって比抵抗を変化させたほう
が、加工性能が向上したりランニングコストが安くなっ
たりする。この加工液を切り替える手段には、一つの加
工液供給装置の内部を二層に分ける場合と、図８で示す
ように加工液供給装置を完全に分離してしまう場合とが
ある。一般に粉末を混入した加工液を使用する場合は後
者が採用されることが多く、片方の加工液供給装置には
通常の炭化水素系の加工液を入れ、もう一方の加工液供
給装置には粉末を混入した加工液を入れる。FIG. 8 is a schematic diagram showing a flow of a machining fluid in the electrical discharge machining apparatus 1 shown in FIG. By the way, the machining fluid used for electric discharge machining is generally water-based or hydrocarbon-based, and usually consists of one type. However, as shown in FIG. 8, it may be better to switch the type of processing fluid to be used depending on the processing state. For example, normally, when a rough machining region is used with a hydrocarbon-based machining fluid, and in a finishing region, a machining fluid in which fine powder is mixed with a hydrocarbon-based machining fluid is used, the finishing process is stable, and a normal hydrocarbon-based machining fluid is used. Large-area mirror processing, which is impossible with a processing liquid, becomes possible. Also, when a water-based processing liquid is used, changing the specific resistance by processing improves processing performance and lowers running cost. As means for switching the processing fluid, there are a case where the inside of one processing fluid supply device is divided into two layers, and a case where the processing fluid supply device is completely separated as shown in FIG. Generally, when using a machining fluid mixed with powder, the latter is often adopted. One machining fluid supply device is filled with a normal hydrocarbon-based machining fluid, and the other machining fluid supply device is powdered. Add the working fluid mixed with.
【０００４】以下図８について説明する。１４，１５は
相互に完全に独立し各々に異なった種類の加工液が入れ
られた第１の加工液供給装置及び第２の加工液供給装置
で、加工液を貯留する加工槽５に供給する加工液を加工
の目的に応じて切り替えて供給する。１６，１７は第
１、第２の加工液供給装置１４，１５内に入れられた第
１の加工液及び第２の加工液である。１８は加工槽５か
ら第１、第２の加工液供給装置１４，１５に加工液を排
出する主排出流路、１９，２０は主排出流路１８から分
岐してそれぞれ第１、第２の加工液供給装置１４，１５
に加工液を排出する第１の排出流路及び第２の排出流路
である。２１，２２はそれぞれ第１、第２の排出流路１
９，２０の途中に設けられた第１の排出バルブ及び第２
の排出バルブである。FIG. 8 will be described below. Reference numerals 14 and 15 denote a first working fluid supply device and a second working fluid supply device which are completely independent of each other and contain different types of working fluid, respectively, and supply the working fluid to a working tank 5 for storing the working fluid. The processing liquid is switched and supplied according to the purpose of processing. Reference numerals 16 and 17 denote a first working fluid and a second working fluid which are put in the first and second working fluid supply devices 14 and 15, respectively. Reference numeral 18 denotes a main discharge flow path for discharging the processing liquid from the processing tank 5 to the first and second processing liquid supply devices 14 and 15, and 19 and 20 are branched from the main discharge flow path 18 and respectively correspond to the first and second flow paths. Processing fluid supply devices 14, 15
A first discharge flow path and a second discharge flow path for discharging the processing liquid. 21 and 22 are the first and second discharge channels 1 respectively.
A first discharge valve provided in the middle of
Discharge valve.
【０００５】２３，２４は第１、第２の加工液供給装置
１４，１５から加工槽５に加工液を供給するための第１
の供給流路及び第２の供給流路、２５は第１、第２の供
給流路２３，２４から供給された供給液を加工槽５に送
る主供給流路である。２６，２７はそれぞれ第１、第２
の供給流路２３，２４に設けられた第１の加工液供給ポ
ンプ及び第２の加工液供給ポンプである。２８は加工中
に発生した加工屑などを除去するため主供給流路２５に
設けられたフィルタユニット、２９は被加工物の加工中
に第１、第２の加工液１６，１７の温度を一定に保つた
め主供給流路２５に設けられた加工液温度制御装置であ
る。[0005] Reference numerals 23 and 24 denote the first and second processing fluid supply devices 14 and 15 for supplying a processing fluid to the processing tank 5.
The supply flow path and the second supply flow path 25 are main supply flow paths for feeding the supply liquid supplied from the first and second supply flow paths 23 and 24 to the processing tank 5. 26 and 27 are the first and second
The first processing liquid supply pump and the second processing liquid supply pump provided in the supply flow paths 23 and 24 of FIG. Reference numeral 28 denotes a filter unit provided in the main supply flow path 25 for removing processing debris generated during processing, and 29 denotes a constant temperature of the first and second processing liquids 16 and 17 during processing of the workpiece. This is a working fluid temperature control device provided in the main supply channel 25 to maintain the temperature.
【０００６】次に上記のように構成した放電加工装置の
作用を、まず図７により説明する。Ｙ軸駆動モータ１２
を駆動すると、サドル３はベッド２上をＹ軸方向に移動
し、テーブル定盤７上に取り付けられた被加工物（図示
せず）もＹ軸方向に移動する。また、Ｘ軸駆動モータ１
３を駆動すると、テーブル４はサドル３上をＸ軸方向に
移動し、テーブル定盤７上に取り付けられた被加工物も
Ｘ軸方向に移動する。さらに、ヘッド９内のＺ軸駆動モ
ータ（図示せず）を駆動すると電極取付定盤１０はＺ軸
方向に移動し、加工用電極８もＺ軸方向に移動する。こ
うして加工液６が貯留された加工槽５内で、加工用電極
１１と被加工物との間に加工液６を介して放電加工がお
こなわれ、被加工物に所望の形状の形彫りをおこなう。Next, the operation of the electric discharge machine configured as described above will be described with reference to FIG. Y-axis drive motor 12
, The saddle 3 moves on the bed 2 in the Y-axis direction, and the workpiece (not shown) mounted on the table 7 also moves in the Y-axis direction. Also, the X-axis drive motor 1
When the table 3 is driven, the table 4 moves on the saddle 3 in the X-axis direction, and the workpiece mounted on the table base 7 also moves in the X-axis direction. Further, when a Z-axis drive motor (not shown) in the head 9 is driven, the electrode mounting platen 10 moves in the Z-axis direction, and the machining electrode 8 also moves in the Z-axis direction. In this way, in the processing tank 5 in which the processing liquid 6 is stored, electric discharge machining is performed between the processing electrode 11 and the workpiece through the processing liquid 6, and the workpiece is engraved in a desired shape. .
【０００７】次に、加工液を用いて放電加工をおこなう
場合の作用を、図８により説明する。まず、第１の加工
液供給装置１４内の第１の加工液１６は、第１の加工液
供給ポンプ２６により加工槽５に供給される。供給途中
で、加工中に発生した加工屑等はフィルタユニット２８
によって除去され、さらに加工液温度制御装置２９によ
って温度が一定に保たれる。なお、放電加工をおこなっ
ている間は、第１の排出バルブ２１と第２の排出バルブ
２２は閉じられている。放電加工が終了すると、第１の
排出バルブ２１が開き、加工槽５の内部に貯留されてい
た加工液は、主排出流路１８、第１の排出流路１９を通
って第１の加工液供給装置１４にもどる。なお、第２の
加工液１７を用いて放電加工をおこなう場合も、第１の
加工液１６を用いて放電加工をおこなった場合に対応す
る装置が同様に作動する。Next, the operation when electric discharge machining is performed using a machining fluid will be described with reference to FIG. First, the first processing liquid 16 in the first processing liquid supply device 14 is supplied to the processing tank 5 by the first processing liquid supply pump 26. During the supply, processing waste generated during processing is removed by the filter unit 28.
And the temperature is kept constant by the working fluid temperature control device 29. During the discharge machining, the first discharge valve 21 and the second discharge valve 22 are closed. When the electric discharge machining is completed, the first discharge valve 21 is opened, and the machining fluid stored in the machining tank 5 passes through the main discharge channel 18 and the first discharge channel 19 to the first machining fluid. Return to the supply device 14. In addition, when performing the electric discharge machining using the second machining fluid 17, the device corresponding to the case where the electric discharge machining is performed using the first machining fluid 16 operates similarly.
【０００８】[0008]
【発明が解決しようとする課題】上記のように構成した
従来の放電加工装置では、何等かの原因で加工液が一方
の加工液供給装置にのみ集中した場合に、加工液が加工
液供給装置の外部にあふれ出すという問題があった。す
なわち、加工槽５から第１、第２の加工液供給装置１
４，１５に加工液を排出する場合、第１、第２の排出流
路１９，２０内部に残留する加工液を完全になくすのは
不可能である。In the conventional electric discharge machine configured as described above, when the machining fluid concentrates on only one machining fluid supply device for some reason, the machining fluid is supplied to the machining fluid supply device. There was a problem of overflowing into the outside. That is, the first and second working fluid supply devices 1
When the machining fluid is discharged into the first and second discharge channels 19 and 20, it is impossible to completely eliminate the machining fluid remaining inside the first and second discharge channels 19 and 20.
【０００９】たとえ、第１、第２の排出流路１９，２
０、第１、第２の排出バルブ２１，２２を等しく設計、
製作しても、配管系等の微少な誤差などによって加工液
が残留する。このため、加工槽５に供給された加工液の
量と、第１、第２の加工液供給装置１４，１５に戻され
る加工液の量とに差がでてくる。従って、第１の加工液
１６→第２の加工液１７→第１の加工液１６→…と加工
液の切り替えを連続すると、加工液が徐々に一方の加工
液供給装置に集中してくる。一般に種類の異なる加工液
が少量混合しても加工性能にはそれほど大きな影響はで
ないが、最終的には加工液が外部にあふれだすことにな
る。これは工場内を汚すばかりでなく、環境汚染という
重大な問題も引き起こす。For example, the first and second discharge passages 19 and 2
0, the first and second discharge valves 21 and 22 are equally designed,
Even if it is manufactured, machining fluid remains due to minute errors in the piping system and the like. Therefore, there is a difference between the amount of the processing liquid supplied to the processing tank 5 and the amount of the processing liquid returned to the first and second processing liquid supply devices 14 and 15. Therefore, when the switching of the first working fluid 16 → the second working fluid 17 → the first working fluid 16 →... Is continued, the working fluid gradually concentrates on one of the working fluid supply devices. Generally, even if a small amount of different types of processing fluids are mixed, the processing performance is not so greatly affected, but the processing liquid eventually overflows to the outside. This not only pollutes the factory, but also causes serious environmental pollution.
【００１０】本発明は上記の課題を解決するためになさ
れたもので、加工液が一方の加工液供給装置内に集中し
た場合でも、加工液が外部にあふれだすおそれのない加
工液供給装置を備えた、放電加工装置を得ることを目的
とする。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and a working fluid supply device that does not have a possibility of overflowing the working fluid to the outside even when the working fluid is concentrated in one of the working fluid supply devices. It is an object of the present invention to obtain an electric discharge machine equipped with the electric discharge machining apparatus.
【００１１】[0011]
【課題を解決するための手段】本発明にかかる放電加工
装置は、複数の加工液供給装置を同水準に設置すると共
に、相互間を連通する連通管の開口端が１個所または複
数個所所望の満水位より上部となるように備えたもので
ある。In the electric discharge machining apparatus according to the present invention, a plurality of machining fluid supply devices are installed at the same level, and one or a plurality of open ends of communication pipes communicating with each other are provided. It is provided so as to be above the full water level.
【００１２】また、本発明にかかる放電加工装置は、加
工槽から排出した加工液をそれぞれの加工液供給装置へ
導く排出流路に加工液の流量を検出する流量検出装置を
設け、この流量検出装置が加工液供給装置に流れる加工
液流量の異常を検出したときは、その検出状況に応じて
加工槽の加工液排出流路に設けた排出バルブを制御する
ようにしたものである。Further, the electric discharge machining apparatus according to the present invention is provided with a flow rate detecting device for detecting a flow rate of the machining fluid in a discharge channel for guiding the machining fluid discharged from the machining tank to each machining fluid supply device. When the apparatus detects an abnormality in the flow rate of the working fluid flowing through the working fluid supply device, the discharge valve provided in the working fluid discharge flow path of the working tank is controlled in accordance with the detection status.
【００１３】[0013]
【作用】同水準に設置した一個または複数個の加工液供
給装置に加工液が集中すると液面が上昇し、この液面が
連通管の開口端に達すると余剰の加工液はこの加工液供
給装置から他方の加工液供給装置に流れ込む。When the working fluid concentrates on one or a plurality of working fluid supply devices installed at the same level, the fluid level rises, and when the fluid level reaches the opening end of the communication pipe, excess working fluid is supplied to the working fluid supply device. It flows into the other processing fluid supply device from the device.
【００１４】流量検出装置が流量の異常を検出すると、
排出バルブが全て閉じられ、あるいは流量の検出状況に
応じて所定量だけ開閉されて、加工槽から排出される加
工液の流れを制御する。When the flow rate detecting device detects a flow rate abnormality,
The discharge valves are all closed, or are opened and closed by a predetermined amount according to the detection state of the flow rate to control the flow of the processing liquid discharged from the processing tank.
【００１５】[0015]
【実施例】実施例１ 図１は本発明に係る加工液供給装置の第１の実施例を示
す模式図である。なお、放電加工装置の構成は図７に示
した従来例と同一なので説明は省略し、また図８の従来
例と同一部分には同じ符号を付し、説明を省略する。３
０は、同水準に設置した第１の加工液供給装置１４と第
２の加工液供給装置１５を連結するＵ字型の連通管で、
その開口端が所望の満水位より上部となるように備えた
ものある。Embodiment 1 FIG. 1 is a schematic view showing a first embodiment of a working fluid supply device according to the present invention. Since the configuration of the electric discharge machine is the same as that of the conventional example shown in FIG. 7, the description is omitted, and the same parts as those in the conventional example of FIG. 3
Numeral 0 is a U-shaped communication pipe connecting the first working fluid supply device 14 and the second working fluid supply device 15 installed at the same level.
In some cases, the opening end is located above a desired full water level.
【００１６】次に、上記のように構成した第１の実施例
の作用を説明する。図８の従来例で示した原因によっ
て、例えば第１の加工液供給装置１４内に第１の加工液
１６が集中すると、第１の加工液供給装置１４の液面が
上昇し、第２の加工液供給装置１５の液面は下降する。
第１の加工液供給装置１４の液面が連通管３０の開口端
に達すると、サイフォンの原理によって、所望の満水位
を越えた余剰の第１の加工液１６は第１の加工液供給装
置１４から第２の加工液供給装置１５へ流れ込む。この
とき、第１、第２の加工液１６，１７は一部混合する
が、異種の加工液が少量混合しても加工性能には大きな
影響ない。この場合、連通管３０の管路抵抗が十分に小
さければ、第１の加工液１６が第１の加工液供給装置１
４から外部にあふれだすのを防止できる。Next, the operation of the first embodiment configured as described above will be described. For example, when the first processing liquid 16 is concentrated in the first processing liquid supply device 14 due to the cause shown in the conventional example of FIG. 8, the liquid level of the first processing liquid supply device 14 rises, The liquid level of the processing liquid supply device 15 drops.
When the liquid level of the first processing liquid supply device 14 reaches the opening end of the communication pipe 30, the surplus first processing liquid 16 exceeding the desired water level is supplied to the first processing liquid supply device by the siphon principle. From 14 flows into the second working fluid supply device 15. At this time, the first and second working fluids 16 and 17 are partially mixed, but even if a different kind of working fluid is mixed in a small amount, the working performance is not significantly affected. In this case, if the line resistance of the communication pipe 30 is sufficiently small, the first processing liquid 16 is supplied to the first processing liquid supply device 1.
4 can be prevented from overflowing to the outside.
【００１７】実施例２ 図２は本発明の第２の実施例を示す模式図である。３１
は、同水準に設置した第１の加工液供給装置１４と第２
の加工液供給装置１５を、第１の加工液供給装置１４の
所望の満水位より上部と第２の加工液供給装置１５の下
部で連通するように備えたＬ字型の連通管である。この
実施例においても、例えば第１の加工液供給装置１４内
に第１の加工液１６が集中すると、第１の加工液供給装
置１４の液面が上昇し、その液面が連通管３１の開口端
に達し、所望の満水位を越えた余剰の加工液１６は加工
液供給装置１４から第２の加工液供給装置１５へ流れ込
む。このとき、第１、第２の加工液１６、１７は少量混
合するが加工性能には大きな影響はなく、この場合にお
いても、連通管３１の管路抵抗が十分に小さければ、第
１の加工液１６が第１の加工液供給装置１４から外部に
あふれだすのを防止できる。Embodiment 2 FIG. 2 is a schematic view showing a second embodiment of the present invention. 31
Is the same as the first working fluid supply device 14 installed at the same level
Is an L-shaped communication pipe provided so as to communicate above the desired water level of the first working fluid supply device 14 and below the second working fluid supply device 15. Also in this embodiment, for example, when the first processing liquid 16 is concentrated in the first processing liquid supply device 14, the liquid level of the first processing liquid supply device 14 rises, and the liquid surface of the first processing liquid supply device 14 Excess working fluid 16 reaching the opening end and exceeding the desired water level flows from the working fluid supply device 14 to the second working fluid supply device 15. At this time, the first and second working fluids 16 and 17 are mixed in a small amount, but do not greatly affect the working performance. In this case as well, if the conduit resistance of the communication pipe 31 is sufficiently small, the first working fluid 16 and 17 are not mixed. The liquid 16 can be prevented from overflowing from the first processing liquid supply device 14 to the outside.
【００１８】実施例３ 図３は本発明の第３の実施例を示す模式図である。３２
は、前記第２の実施例と同様に、同水準に設置した第１
の加工液供給装置１４と第２の加工液供給装置１５を、
第１の加工液供給装置１４の所望の満水位より上部と第
２の加工液供給装置１５の所望の満水位より上部を直線
状に連通するように備えた橋架け型の連通管である。こ
の実施例においても、例えば第１の加工液供給装置１４
内に第１の加工液１６が集中すると、第１の加工液供給
装置１４の液面が上昇し、その液面が連通管３２の開口
端に達し、所望の満水位を越えた余剰の加工液１６は加
工液供給装置１４から第２の加工液供給装置１５へ流れ
込み、第１、第２の加工液１６、１７は少量混合するが
加工性能には大きな影響はなく、連通管３２の管路抵抗
が十分に小さければ、第１の加工液１６が第１の加工液
供給装置１４から外部にあふれだすのを防止できること
は前記と同様である。Embodiment 3 FIG. 3 is a schematic view showing a third embodiment of the present invention. 32
Is the same as that of the second embodiment, the first installed at the same level.
The working fluid supply device 14 and the second working fluid supply device 15
This is a bridge-type communication pipe provided so as to linearly communicate a portion above the desired water level of the first working fluid supply device 14 and a portion above the desired water level of the second working fluid supply device 15. Also in this embodiment, for example, the first working fluid supply device 14
When the first processing liquid 16 is concentrated in the inside, the liquid level of the first processing liquid supply device 14 rises, the liquid level reaches the open end of the communication pipe 32, and the excess processing exceeding the desired water level is performed. The liquid 16 flows from the processing liquid supply device 14 to the second processing liquid supply device 15, and the first and second processing liquids 16 and 17 are mixed in a small amount, but do not greatly affect the processing performance. If the path resistance is sufficiently small, it is possible to prevent the first working fluid 16 from overflowing from the first working fluid supply device 14 to the outside in the same manner as described above.
【００１９】実施例４ 図４は本発明の第４の実施例を示す模式図で、同水準に
設置した加工液供給装置が３個ある場合を示している。
３７は第３の加工液供給装置であり、３８は第１、第２
の加工液供給装置１４，１５の所望の満水位より上部を
連通するように備えたＵ字型の連通管３０から第３の加
工液供給装置３７の所望の満水位より上部に至るように
備えた連通管である。この実施例においても、例えば第
１の加工液供給装置１４内に第１の加工液１６が集中す
ると、第１の加工液供給装置１４の液面が連通管３２の
開口端に達し、所望の満水位を越えた余剰の加工液１６
は加工液供給装置１４から第２の加工液供給装置１５ま
たはおよび第３の加工液供給装置３７へ流れ込み、少量
混合するが加工性能には大きな影響はなく、連通管３
０、３８の管路抵抗が十分に小さければ、第１の加工液
１６が第１の加工液供給装置１４から外部にあふれだす
のを防止できることは前記と同様である。Embodiment 4 FIG. 4 is a schematic view showing a fourth embodiment of the present invention, in which there are three working fluid supply devices installed at the same level.
37 is a third working fluid supply device, and 38 is the first and second working fluid supply devices.
Of the third working fluid supply device 37 from above the desired full water level of the third working fluid supply device 37. Communication pipe. Also in this embodiment, for example, when the first processing liquid 16 is concentrated in the first processing liquid supply device 14, the liquid level of the first processing liquid supply device 14 reaches the open end of the communication pipe 32, and Excess working fluid 16 above the water level
Flows into the second working fluid supply device 15 or the third working fluid supply device 37 from the working fluid supply device 14 and is mixed in a small amount, but does not greatly affect the working performance.
If the line resistances 0 and 38 are sufficiently small, the first working fluid 16 can be prevented from overflowing from the first working fluid supply device 14 to the outside in the same manner as described above.
【００２０】なお、第４の実施例では加工液供給装置が
３個ある場合を示したが、４個以上であってもよい。そ
のとき、前記連通管の開口端の１個所または複数個所を
満水位より下部に備えてもよい。すなわち、開口端の１
個所が満水位より下部に備えられていても各加工液供給
装置の液面が満水位より下部では加工液は混合せず、加
工液が混合しても別段支障がない加工液供給装置の満水
位より下部同士を連結することによって加工液量の不均
衡を未然に防止することができる。さらに、第１〜第４
の実施例では、連通管の形状をＵ字型，Ｌ字型及び橋架
け型としたが、特に形状を限定するものではなく他の形
状であってもよい。Although the fourth embodiment has shown the case where there are three machining liquid supply devices, the number may be four or more. At this time, one or more of the open ends of the communication pipe may be provided below the full water level. That is, 1 at the open end
Even if the location is below the water level, the processing fluid does not mix when the liquid level of each processing fluid supply device is below the full water level, and there is no problem even if the processing fluid mixes. By connecting the lower portions of the working fluid to each other, it is possible to prevent imbalance in the amount of the working fluid. Furthermore, first to fourth
In the embodiment, the shape of the communication pipe is U-shaped, L-shaped, and bridge-shaped, but the shape is not particularly limited and may be another shape.
【００２１】実施例５ 図５は本発明の第５の実施例を示す模式図である。３
３，３４はそれぞれ第１、第２の加工液供給装置１４，
１５の内部に取付けられ、その加工液量を検出する第１
の加工液量検出装置及び第２の加工液量検出装置で、液
量の増減を加工液面の上昇、下降で検出する。なお、第
５の実施例では、第１，第２の加工液検出装置１４，１
５として液面検出装置を用いている。また、第５の実施
例では加工液量検出装置を加工液供給装置内に２個設け
た場合を示したが、加工液供給装置内のいずれか一方に
設けてもよい。Embodiment 5 FIG. 5 is a schematic view showing a fifth embodiment of the present invention. 3
Reference numerals 3 and 34 denote first and second working fluid supply units 14,
15 which is attached to the inside of
And the second machining fluid amount detection device detect an increase or decrease in the fluid amount by increasing or decreasing the machining fluid level. In the fifth embodiment, the first and second working fluid detection devices 14, 1
5, a liquid level detection device is used. Further, in the fifth embodiment, the case where two processing liquid amount detection devices are provided in the processing liquid supply device is shown, but they may be provided in any one of the processing liquid supply devices.
【００２２】上記のように構成した第５の実施例の作用
を説明する。例えば、第１の加工液供給装置１４内に加
工液が集中すると、第１の加工液供給装置１４の液量が
増加し、第２の加工液供給装置１５の液量は減少する。
この液量の変化を第１、第２の加工液量検出装置３３，
３４で検出し、異常と判断されたときは第１、第２の加
工液量検出装置３３，３４からの情報に基づいて第１、
第２の排出バルブ２１，２２が閉じられる。こうして、
第１の加工液１６が第１の加工液供給装置１４の外部に
あふれだすのを防止できる。また、第１の加工液供給装
置１４に加工液が集中していると判断された場合、第１
の排出バルブ２１を閉じ、第２の排出バルブ２２を開く
と、余剰の加工液は第２の加工液供給装置１５に排出さ
れ、加工液が第１の加工液供給装置１４の外部にあふれ
だすのを防止できる。The operation of the fifth embodiment configured as described above will be described. For example, when the processing liquid is concentrated in the first processing liquid supply device 14, the liquid amount of the first processing liquid supply device 14 increases, and the liquid amount of the second processing liquid supply device 15 decreases.
The change in the fluid amount is detected by the first and second machining fluid amount detectors 33,
34, when it is determined that there is an abnormality, based on information from the first and second working fluid amount detection devices 33, 34, the first,
The second discharge valves 21 and 22 are closed. Thus,
The first working fluid 16 can be prevented from overflowing to the outside of the first working fluid supply device 14. If it is determined that the processing fluid is concentrated on the first processing fluid supply device 14,
When the second discharge valve 22 is opened and the second discharge valve 22 is opened, the surplus processing liquid is discharged to the second processing liquid supply device 15, and the processing liquid overflows to the outside of the first processing liquid supply device 14. Can be prevented.
【００２３】なお、第５の実施例（図５）では第１、第
２の加工液量検出装置３３，３４として液面検出装置を
用いたが、例えば、第１、第２の加工液供給装置１４，
１５の内部の加工液のヘッドを圧力検出装置で検出して
もよく、内部の加工液の液量を検出するものであれば特
に検出装置を限定するものではない。In the fifth embodiment (FIG. 5), a liquid level detecting device is used as the first and second working fluid amount detecting devices 33 and 34. For example, the first and second working fluid supply devices are used. Device 14,
The head of the working fluid inside 15 may be detected by a pressure detecting device, and the detecting device is not particularly limited as long as it detects the amount of the working fluid inside.
【００２４】実施例６ 図６は本発明の第６の実施例を示す模式図である。３
５，３６はそれぞれ第１、第２の排出流路１９，２０に
設けられ、加工液の流量を検出する第１の流量検出装置
及び第２の流量検出装置である。Embodiment 6 FIG. 6 is a schematic diagram showing a sixth embodiment of the present invention. 3
Reference numerals 5 and 36 denote a first flow detecting device and a second flow detecting device provided in the first and second discharge flow paths 19 and 20, respectively, for detecting the flow rate of the processing liquid.
【００２５】上記のように構成した第６の実施例におい
て、例えば、第１の加工液供給装置１４内に加工液が集
中する場合、第１の排出流路１９の流量は増加し、第２
の排出流路２０の流量は減少する。この流量の変化を第
１、第２の流量検出装置３５，３６で検出し、異常と判
断されたときは第１、第２の排出バルブ１８，１９を全
閉あるいは所定量開閉する。すなわち、加工液供給装置
内に保有する液量または液面位置に左右されることな
く、この検出装置が異常を検出したときには排出バルブ
をすべて閉じ、あるいはその検出状況に応じて排出バル
ブを所定量の開閉制御できるので、加工液が第１の加工
液供給装置１４から外部にあふれだすのを防止できる。In the sixth embodiment constructed as described above, for example, when the processing liquid is concentrated in the first processing liquid supply device 14, the flow rate of the first discharge flow path 19 increases and the second
The flow rate of the discharge flow path 20 decreases. This change in the flow rate is detected by the first and second flow rate detection devices 35 and 36, and when it is determined that the flow rate is abnormal, the first and second discharge valves 18 and 19 are fully closed or opened and closed by a predetermined amount. That is, regardless of the amount or level of the liquid held in the processing liquid supply device, when the detection device detects an abnormality, all the discharge valves are closed, or the discharge valve is set to a predetermined amount according to the detection status. Can be controlled to prevent the working fluid from overflowing from the first working fluid supply device 14 to the outside.
【００２６】なお、上記の各実施例（実施例１〜実施例
６）では、放電加工装置が全て形彫り放電加工装置であ
る場合について示したが、他の種類の放電加工装置、例
えばワイヤカット放電加工装置であってもよい。In each of the above embodiments (Embodiments 1 to 6), the case where all of the electric discharge machines are die-sinking electric discharge machines has been described. It may be an electric discharge machine.
【００２７】[0027]
【発明の効果】以上の説明から明らかなように、本発明
は同水準に設置した複数の加工液供給装置を連通する連
通管の開口端が１個所または複数個所所望の満水位より
上部となるように備えたので、連通管に弁またはポンプ
等を必要とせず、加工液が一個または複数の加工液供給
装置に集中した場合にも、加工液が外部にあふれだすこ
とはない。また、加工槽からそれぞれの加工液供給装置
に至る排出流路に流量検出装置を設けたので、加工液供
給装置内に保有する液量または液面位置に左右されるこ
となく、この検出装置が異常を検出したときには排出バ
ルブをすべて閉じ、あるいはその検出状況に応じて排出
バルブを所定量開閉して、加工液が一個の加工液供給装
置に集中した場合にも、加工液が外部にあふれだすこと
はない。As is apparent from the above description, according to the present invention, the open end of one or more communicating pipes communicating a plurality of working fluid supply devices installed at the same level is located above a desired water level. With this arrangement, no valve or pump is required for the communication pipe, and even when the machining fluid is concentrated on one or more machining fluid supply devices, the machining fluid does not overflow to the outside. In addition, since a flow rate detection device is provided in the discharge flow path from the processing tank to each processing liquid supply device, this detection device can be used without being affected by the amount or level of the liquid held in the processing liquid supply device. When an abnormality is detected, all the discharge valves are closed, or the discharge valve is opened and closed by a predetermined amount according to the detection status, so that the processing fluid overflows even when the processing fluid is concentrated on one processing fluid supply device. Never.
【図１】本発明の第１の実施例を示す模式図である。FIG. 1 is a schematic diagram showing a first embodiment of the present invention.
【図２】本発明の第２の実施例の要部を示す模式図であ
る。FIG. 2 is a schematic view showing a main part of a second embodiment of the present invention.
【図３】本発明の第３の実施例の要部を示す模式図であ
る。FIG. 3 is a schematic view showing a main part of a third embodiment of the present invention.
【図４】本発明の第４の実施例の要部を示す模式図であ
る。FIG. 4 is a schematic view showing a main part of a fourth embodiment of the present invention.
【図５】本発明の第５の実施例を示す模式図である。FIG. 5 is a schematic view showing a fifth embodiment of the present invention.
【図６】本発明の第６の実施例を示す模式図である。FIG. 6 is a schematic diagram showing a sixth embodiment of the present invention.
【図７】従来の放電加工装置の一例を示す斜視図であ
る。FIG. 7 is a perspective view showing an example of a conventional electric discharge machine.
【図８】図７の加工液の流れを示す模式図である。FIG. 8 is a schematic diagram showing a flow of the working fluid in FIG. 7;
１ 放電加工装置 ５ 加工槽 １４，１５，３７ 加工液供給装置 １６，１７ 加工液 ２１，２２ 排出バルブ ３０，３１，３２，３８ 連通管 ３３，３４ 加工液量検出装置 ３５，３６ 流量検出装置 DESCRIPTION OF SYMBOLS 1 Electric discharge machining apparatus 5 Machining tank 14,15,37 Machining fluid supply apparatus 16,17 Machining fluid 21,22 Discharge valve 30,31,32,38 Communication pipe 33,34 Machining fluid quantity detecting apparatus 35,36 Flow rate detecting apparatus
Claims (2)
該加工液供給装置から加工槽へ供給する加工液を、被加
工物の加工目的に応じて切り替えて前記被加工物の加工
をおこなう放電加工装置において、 前記加工液供給装置を同水準に設置すると共に、相互間
を連結する連通管の開口端が１個所または複数個所所望
の満水位より上部となるように備えたことを特徴とする
放電加工装置。A plurality of independent machining fluid supply devices,
In an electric discharge machine for processing the workpiece by switching a processing fluid supplied from the processing fluid supply device to a processing tank in accordance with a processing purpose of the workpiece, the machining fluid supply device is installed at the same level . In addition, an electric discharge machining apparatus is provided in which one or more open ends of the communication pipes connecting each other are located above a desired water level.
該加工液供給装置から加工槽へ供給する加工液を、被加
工物の加工目的に応じて切り替えて前記被加工物の加工
をおこなう放電加工装置において、 前記加工槽から排出した加工液をそれぞれの加工液供給
装置へ導く排出流路に加工液の流量を検出する流量検出
装置を設け、 該流量検出装置が前記加工液供給装置に流れる加工液流
量の異常を検出したときは、その検出状況に応じて前記
加工槽の加工液排出流路に設けた排出バルブを制御する
ことを特徴とする放電加工装置。 2. A method according to claim 1, further comprising a plurality of independent processing fluid supply devices,
The processing liquid supplied from the processing liquid supply device to the processing tank is added
Switch the processing according to the processing purpose of the workpiece and process the workpiece
The machining fluid discharged from the machining tank is supplied to each machining fluid in the electric discharge machining device.
Flow rate detection that detects the flow rate of machining fluid in the discharge channel leading to the device
A flow of the machining fluid flowing through the machining fluid supply device.
When an abnormality in the amount is detected,
Controls the discharge valve provided in the processing liquid discharge channel of the processing tank
An electric discharge machine characterized by the above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4051476A JP2709670B2 (en) | 1992-03-10 | 1992-03-10 | Electric discharge machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4051476A JP2709670B2 (en) | 1992-03-10 | 1992-03-10 | Electric discharge machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05253755A JPH05253755A (en) | 1993-10-05 |
| JP2709670B2 true JP2709670B2 (en) | 1998-02-04 |
Family
ID=12888008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4051476A Expired - Lifetime JP2709670B2 (en) | 1992-03-10 | 1992-03-10 | Electric discharge machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2709670B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110039140B (en) * | 2019-04-09 | 2021-06-15 | 清华大学 | Device and method for aligning surface of insulating material workpiece and regulating and controlling immersion depth |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59193637U (en) * | 1983-06-13 | 1984-12-22 | 株式会社ソディック | Machining fluid circulation device for electrical discharge machine |
| JPS6446128U (en) * | 1987-09-16 | 1989-03-22 | ||
| JPH0761573B2 (en) * | 1988-07-15 | 1995-07-05 | 三菱電機株式会社 | Machining fluid treatment device for electric discharge machine |
-
1992
- 1992-03-10 JP JP4051476A patent/JP2709670B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05253755A (en) | 1993-10-05 |
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