JP2869544B2 - Control device for machining fluid for electric discharge machine - Google Patents
Control device for machining fluid for electric discharge machineInfo
- Publication number
- JP2869544B2 JP2869544B2 JP1318161A JP31816189A JP2869544B2 JP 2869544 B2 JP2869544 B2 JP 2869544B2 JP 1318161 A JP1318161 A JP 1318161A JP 31816189 A JP31816189 A JP 31816189A JP 2869544 B2 JP2869544 B2 JP 2869544B2
- Authority
- JP
- Japan
- Prior art keywords
- electric discharge
- machining
- machining fluid
- fluid
- discharge machine
- 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 - Fee Related
Links
Landscapes
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、放電加工機用加工液の制御装置に関する。Description: TECHNICAL FIELD The present invention relates to a control device for a machining fluid for an electric discharge machine.
［従来の技術］ 従来の放電加工装置のなかには、水等の加工液を使用
して放電加工するものがある。濾過された加工液は加工
液タンクから加工部へ供給され、汚れた加工液は加工液
タンクに戻されるが、水等の加工液はイオン化して比抵
抗値が低下しやすいので、この種の放電加工装置では、
加工液タンクに貯溜される加工液を循環させて濾過する
循環部の他に、加工液を純水器に通して脱イオンを行な
う純水器部を設けている。[Prior Art] Some conventional electric discharge machines perform electric discharge machining using a machining fluid such as water. The filtered machining fluid is supplied from the machining fluid tank to the machining section, and the dirty machining fluid is returned to the machining fluid tank.However, machining fluid such as water is ionized and the specific resistance value tends to decrease. In the electric discharge machine,
In addition to a circulating unit for circulating and filtering the working fluid stored in the working fluid tank, a pure water unit for passing the working fluid through a pure water device for deionization is provided.
［発明が解決しようとする課題］ 上記のような従来装置においては、加工液タンク内に
加工液が滞留している状態では加工液全体が空気に接触
しにくく加工液の比抵抗値は低下しにくいが、フィルタ
に通すために加工液を循環させると加工液の比抵抗値が
より低下しやすくなる。比抵抗値が低下しやすければし
やすい程、純水器を動作させる必要が生じ、それだけ脱
イオンを行なうためにのイオン交換樹脂の寿命が短くな
る。[Problems to be Solved by the Invention] In the conventional apparatus as described above, in a state where the machining fluid is retained in the machining fluid tank, the entire machining fluid hardly comes into contact with air, and the resistivity of the machining fluid decreases. Although it is difficult, when the working fluid is circulated to pass through the filter, the specific resistance value of the working fluid is more likely to decrease. The easier it is to lower the specific resistance value, the more it becomes necessary to operate the water purifier, and the shorter the life of the ion exchange resin for performing deionization.
本発明は、イオン交換樹脂の寿命を長くすることがで
きる放電加工機用加工液の制御装置を提供することを目
的とするものである。An object of the present invention is to provide a control device for a machining fluid for an electric discharge machine, which can prolong the life of an ion exchange resin.
［課題を解決するための手段］ 本発明は、加工液タンク内に貯溜される放電加工機用
加工液を脱イオンする純水器と、上記加工液の比抵抗値
が所定値になるように、上記純水器に脱イオンさせる純
水器制御手段と、上記放電加工機用加工液を濾過するフ
ィルタとを有する放電加工機用加工液の制御装置であっ
て、上記放電加工機用加工液の制御装置の電源を投入し
てから所定時間が経過するまで、または、放電加工を停
止してから所定時間が経過するまでは、上記フィルタを
介して上記加工液を濾過させるとともに、上記所定時間
が経過するまで放電加工が行われずしかも上記所定時間
が経過した後に放電加工が行なわなければ、上記濾過を
停止させる濾過制御手段を有する放電加工機用加工液の
制御装置である。[Means for Solving the Problems] The present invention provides a pure water device for deionizing a machining fluid for an electric discharge machine stored in a machining fluid tank, and a dewatering device so that a specific resistance value of the machining fluid becomes a predetermined value. A control device for a machining fluid for an electric discharge machine, comprising: a pure water device control means for deionizing the pure water device; and a filter for filtering the machining fluid for the electric discharge machine, wherein the machining fluid for the electric discharge machine is provided. Until a predetermined time elapses after the power of the control device is turned on, or until a predetermined time elapses after the electric discharge machining is stopped, the machining fluid is filtered through the filter, and the predetermined time elapses. This is a control device for a machining fluid for an electric discharge machine, which has a filtration control means for stopping the filtration if the electric discharge machining is not performed until the predetermined time has elapsed and the electric discharge machining is not performed after the predetermined time has elapsed.
［作用］ 本発明において、放電加工機用加工液の制御装置の電
源投入後の所定時間中はフィルタで濾過し、加工液が十
分に濾過された所定時間経過後は加工液をフィルタに通
さないようにする。また、放電加工停止後所定時間中
は、加工によって汚れた加工液をフィルタで濾過する。
そして、加工液が十分に濾過された所定時間経過後は加
工液をフィルタに通さないようにする。このため、放電
加工が行なわれず加工液が浄化されている間は、循環部
に加工液を循環させないから、加工液が空気と接触する
度合いが少なくなり、比抵抗値が低下しにくくなり、そ
れだけ純水器を動作させるに必要な時間が短くなり、イ
オン交換樹脂の寿命が長くなる。[Operation] In the present invention, the filter is filtered with a filter for a predetermined time after the power of the control device for the machining fluid for the electric discharge machine is turned on, and the machining fluid is not passed through the filter after a lapse of a prescribed time after the machining fluid is sufficiently filtered. To do. Also, during a predetermined time after the stop of the electric discharge machining, the machining fluid contaminated by machining is filtered by a filter.
Then, after a lapse of a predetermined time after the processing liquid has been sufficiently filtered, the processing liquid is prevented from passing through the filter. Therefore, while the electric discharge machining is not performed and the machining fluid is purified, the machining fluid is not circulated to the circulating portion, so that the degree of contact of the machining fluid with the air is reduced, and the specific resistance value is hardly reduced. The time required to operate the water purifier is reduced, and the life of the ion exchange resin is extended.
［実施例］ 第１図は、本発明の一実施例の説明図である。Embodiment FIG. 1 is an explanatory diagram of an embodiment of the present invention.
この実施例は、加工液タンクＴ内の加工液を循環ポン
プP1で循環し、この循環ループの中にフィルタＦが設け
られている。また、純水器用ポンプP2によって加工液が
純水器Ｊに送られ、脱イオンが行なわれる。コントロー
ラＣは、循環ポンプP1と純水用ポンプP2とを制御するも
のである。In this embodiment, the working fluid in the working fluid tank T is circulated by a circulation pump P1, and a filter F is provided in this circulation loop. Further, the processing liquid is sent to the water purifier J by the water purifier pump P2, and deionized. The controller C controls the circulation pump P1 and the pure water pump P2.
なお、コントローラＣは、加工液の比抵抗値が所定値
以下のときに脱イオンし、比抵抗値が所定値よりも大き
いときには脱イオンさせないようにする純水器制御手段
の例である。また、コントローラＣは、放電加工機用加
工液の制御装置の電源投入後または加工停止後所定時間
が経過するまでの間は加工液を濾過させ、加工せずに所
定時間が経過した後なお加工が行なわれないときは、加
工液を濾過させないようにする濾過制御手段の例であ
る。The controller C is an example of a deionizer control unit that deionizes when the specific resistance value of the working fluid is equal to or less than a predetermined value and does not deionize when the specific resistance value is larger than the predetermined value. Further, the controller C filters the machining fluid until a predetermined time elapses after the power of the control device for the machining fluid for the electric discharge machine is turned on or the machining is stopped, and the machining is performed after a predetermined time elapses without machining. This is an example of filtration control means for preventing the processing liquid from being filtered when the processing is not performed.
次に、上記実施例におけるコントローラＣの動作につ
いて説明する。Next, the operation of the controller C in the above embodiment will be described.
第２図は、上記実施例におけるコントローラＣの動作
を示すフローチャートである。FIG. 2 is a flowchart showing the operation of the controller C in the above embodiment.
まず、加工液の基準となる比抵抗値を設定し、この設
定した値をαとする。First, a specific resistance value serving as a reference of the working fluid is set, and the set value is set to α.
そして、放電加工の途中である（S1）か、放電加工が
終了してから２時間以内である（S2）か、制御装置の電
源スイッチを投入してから２時間以内である（S4）場合
には、循環ポンプP1をオンし（S5）、フィルタＦによっ
て加工液を濾過する。このときに、加工液の比抵抗値を
測定し、この測定した比抵抗値が既に設定してある基準
の比抵抗値αよりも小さければ（S6）、純水器用ポンプ
P2をオンレ（S7）、タンクＴ内の加工液を脱イオンす
る。When the electric discharge machining is in progress (S1), within 2 hours after the electric discharge machining is completed (S2), or within 2 hours after turning on the power switch of the control device (S4). Turns on the circulation pump P1 (S5), and filters the machining fluid by the filter F. At this time, the specific resistance value of the working fluid is measured, and if the measured specific resistance value is smaller than the already set reference specific resistance value α (S6), the pump for the pure water device is used.
P2 is turned on (S7), and the machining fluid in the tank T is deionized.
S6において、測定した比抵抗値が基準の比抵抗値αよ
りも大きければ（S6）、純水器用ポンプP2をオフし（S
8）、タンクＴ内の加工液の脱イオン動作を停止する。In S6, if the measured specific resistance value is larger than the reference specific resistance value α (S6), the pure water pump P2 is turned off (S6).
8) Stop the deionization operation of the working fluid in the tank T.
ところで、放電加工が終了してから２時間経過した場
合、または制御装置の電源スイッチを投入してから２時
間経過した場合には、循環ポンプP1を強御的にオフする
（S11）。このときに、加工液の比抵抗値を測定し、基
準の比抵抗値αよりも小さければ（S6）、純水器用ポン
プP2をオンし（S7）、タンクＴ内の加工液を脱イオンす
る。S6において、測定した比抵抗値が基準の比抵抗値α
以上であれば（S6）、純水器用ポンプP2をオフし（S
8）、タンクＴ内の加工液の脱イオン動作を停止する。By the way, when two hours have passed since the end of the electric discharge machining, or when two hours have passed since the power switch of the control device was turned on, the circulation pump P1 is forcibly turned off (S11). At this time, the resistivity of the working fluid is measured, and if it is smaller than the reference resistivity α (S6), the pure water pump P2 is turned on (S7), and the working fluid in the tank T is deionized. . In S6, the measured specific resistance value is the standard specific resistance value α.
If so (S6), the pump P2 for pure water is turned off (S6).
8) Stop the deionization operation of the working fluid in the tank T.
上記のように、放電加工が終了してから２時間経過し
た場合に循環ポンプP1を強制的にオフするので、加工液
が空気と接触する度合が少なくなり、加工液の比抵抗値
が低下する要因が減少し、純水器Ｊを動作させる必要が
少なくなって、したがって、純水器Ｊ内のイオン交換樹
脂の寿命がその分だけ長くなる。As described above, the circulation pump P1 is forcibly turned off two hours after the end of the electric discharge machining, so that the degree of contact of the machining fluid with the air decreases, and the specific resistance value of the machining fluid decreases. Factors are reduced and the need to operate the water purifier J is reduced, thus extending the life of the ion exchange resin in the water purifier J.
また、電源スイッチを投入してから２時間経過した場
合にも循環ポンプP1を強制的にオフするので、上記と同
様に、加工液が空気と接触する度合が少なく、純水器Ｊ
を動作させる必要が少なくなり、したがって、純水器Ｊ
内のイオン交換樹脂の寿命がその分だけ長くなる。In addition, since the circulation pump P1 is forcibly turned off two hours after the power switch is turned on, the degree of contact of the working fluid with the air is small as in the above case.
Needs to be operated, and therefore the pure water J
The life of the ion-exchange resin inside is prolonged accordingly.
なお、上記実施例においては、時間を２時間とした
が、２時間以外の所定間に設定してもよい。また、その
所定時間は図示しないタイマでカウントされ、そのタイ
マは、放電加工を開始したときに今までカウントしてい
た値を０にするものである。そして、そのタイマは、放
電加工を終了したときから所定時間のカウントを行な
う。また、電源を遮断したときに、今までカウントして
いたタイマの値を０にするものである。In the above embodiment, the time is set to 2 hours, but may be set to a predetermined time other than 2 hours. The predetermined time is counted by a timer (not shown), and the timer sets the value counted up to 0 when electric discharge machining is started. Then, the timer counts a predetermined time from when the electric discharge machining is completed. Further, when the power is turned off, the value of the timer that has been counting is set to 0.
［発明の効果］ 本発明によれば、イオン交換樹脂の寿命を長くするこ
とができるという効果を奏する。[Effects of the Invention] According to the present invention, there is an effect that the life of the ion exchange resin can be extended.
第１図は、本発明の一実施例の説明図である。 第２図は、上記実施例におけるコントローラＣの動作を
示すフローチャートである。 Ｆ…フィルタ、Ｊ…純水器、P1…循環ポンプ、P2…純水
器用ポンプ、Ｃ…コントローラ。FIG. 1 is an explanatory diagram of one embodiment of the present invention. FIG. 2 is a flowchart showing the operation of the controller C in the above embodiment. F: filter, J: pure water, P1: circulation pump, P2: pure water pump, C: controller.
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) B23H 1/10 B23H 7/36 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 6 , DB name) B23H 1/10 B23H 7/36
Claims (1)
加工液を脱イオンする純水器と、上記加工液の比抵抗値
が所定値になるように、上記純水器に脱イオンさせる純
水器制御手段と、上記放電加工機用加工液を濾過するフ
ィルタとを有する放電加工機用加工液の制御装置であっ
て、 上記放電加工機用加工液の制御装置の電源を投入してか
ら所定時間が経過するまで、または、放電加工を停止し
てから所定時間が経過するまでは、上記フィルタを介し
て上記加工液を濾過させるとともに、上記所定時間が経
過するまで放電加工が行われずしかも上記所定時間が経
過した後に放電加工が行なわれなければ、上記濾過を停
止させる濾過制御手段を有することを特徴とする放電加
工機用加工液の制御装置。1. A deionizer for deionizing a machining fluid for an electric discharge machine stored in a machining fluid tank, and a deionizer for deionizing the machining fluid so that a specific resistance value of the machining fluid becomes a predetermined value. A control device for a machining fluid for an electric discharge machine, comprising: a water purifier control means to be controlled; and a filter for filtering the machining fluid for the electric discharge machine. Until a predetermined time has elapsed since the start of the electric discharge machining, or until the predetermined time has elapsed since the stop of the electric discharge machining, the machining fluid is filtered through the filter, and the electric discharge machining is performed until the predetermined time elapses. A machining fluid control device for an electric discharge machine, further comprising a filtration control means for stopping the filtration if the electric discharge machining is not performed after the predetermined time has elapsed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1318161A JP2869544B2 (en) | 1989-12-07 | 1989-12-07 | Control device for machining fluid for electric discharge machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1318161A JP2869544B2 (en) | 1989-12-07 | 1989-12-07 | Control device for machining fluid for electric discharge machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03178729A JPH03178729A (en) | 1991-08-02 |
| JP2869544B2 true JP2869544B2 (en) | 1999-03-10 |
Family
ID=18096158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1318161A Expired - Fee Related JP2869544B2 (en) | 1989-12-07 | 1989-12-07 | Control device for machining fluid for electric discharge machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2869544B2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6125724A (en) * | 1984-07-10 | 1986-02-04 | Inoue Japax Res Inc | Processing liquid controller for electric discharge processing equipment |
-
1989
- 1989-12-07 JP JP1318161A patent/JP2869544B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03178729A (en) | 1991-08-02 |
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