JPH07171753A - Device for controlling slurry temperature for wire saw - Google Patents
Device for controlling slurry temperature for wire sawInfo
- Publication number
- JPH07171753A JPH07171753A JP34320493A JP34320493A JPH07171753A JP H07171753 A JPH07171753 A JP H07171753A JP 34320493 A JP34320493 A JP 34320493A JP 34320493 A JP34320493 A JP 34320493A JP H07171753 A JPH07171753 A JP H07171753A
- Authority
- JP
- Japan
- Prior art keywords
- slurry
- temperature
- storage tank
- control
- wire saw
- 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
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
- B28D1/025—Use, recovery or regeneration of abrasive mediums
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ワイヤソーのスラリ冷
却装置において、スラリの温度を目標温度に制御するス
ラリ温度制御装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slurry temperature control device for controlling the temperature of the slurry to a target temperature in a wire saw slurry cooling device.
【０００２】[0002]
【従来の技術】ワイヤソーのスラリ冷却装置は、切削微
粉末および冷却油からなるスラリを貯留槽に溜めてお
き、貯留槽内のスラリを循環路によりワークやワイヤソ
ーのメインローラに循環状態で供給するとともに、貯留
槽内のスラリを熱交換器へ循環路により供給し、熱交換
器内で冷却水によりスラリを冷却する構成となってい
る。2. Description of the Related Art A wire saw slurry cooling device stores a slurry made of fine cutting powder and cooling oil in a storage tank and supplies the slurry in the storage tank to a main roller of a work or a wire saw in a circulating state through a circulation path. At the same time, the slurry in the storage tank is supplied to the heat exchanger through the circulation path, and the slurry is cooled by the cooling water in the heat exchanger.
【０００３】[0003]
【発明が解決しようとする課題】ワイヤソーのスラリ冷
却装置における従来のスラリ温度制御装置は、熱交換器
の循環路中で、スラリを常時循環させておき、貯留槽内
のスラリの温度を検出しこの検出温度に基づき熱交換器
内の冷却水の流量を制御することにより、貯留槽内のス
ラリの温度を目標温度に制御する構成となっている。し
かし、従来のスラリ温度制御装置では、冷却水による熱
交換過程を経て、換言すると熱交換と並行して、貯留槽
内のスラリを冷却するため、温度制御の応答に遅れが生
じ、応答性が悪いという問題があった。A conventional slurry temperature control device in a wire saw slurry cooling device detects the temperature of the slurry in the storage tank by constantly circulating the slurry in the circulation path of the heat exchanger. By controlling the flow rate of the cooling water in the heat exchanger based on the detected temperature, the temperature of the slurry in the storage tank is controlled to the target temperature. However, in the conventional slurry temperature control device, since the slurry in the storage tank is cooled through the heat exchange process by the cooling water, in other words, in parallel with the heat exchange, the response of the temperature control is delayed and the responsiveness is deteriorated. There was a problem of being bad.
【０００４】[0004]
【発明の目的】本発明の目的は、ワイヤソーのスラリ冷
却装置において、充分に冷却された切削微粉末含有スラ
リの帰還量を直接制御し、温度制御の応答性を向上させ
ることにある。SUMMARY OF THE INVENTION It is an object of the present invention to directly control the feedback amount of a sufficiently cooled slurry containing fine cutting powder in a slurry cooling device for a wire saw to improve the responsiveness of temperature control.
【０００５】[0005]
【課題を解決するための手段】本発明は、ワイヤソーの
スラリ冷却装置において、貯留槽内のスラリの温度を検
出する温度センサと、この温度センサによって検出され
た温度が目標温度より大きいときに制御出力信号を発生
させる制御器と、この制御器からの制御出力信号によっ
て圧力流体の給排を制御する制御弁と、熱交換器から貯
留槽に至る循環路に設けられ、圧力流体の給排によりス
ラリの流量を増減させる圧力応動型絞り弁とを具備する
構成としたものである。DISCLOSURE OF THE INVENTION The present invention relates to a slurry cooling device for a wire saw, wherein a temperature sensor for detecting the temperature of the slurry in the storage tank and a control when the temperature detected by the temperature sensor is higher than a target temperature. A controller that generates an output signal, a control valve that controls the supply and discharge of pressure fluid by the control output signal from this controller, and a circulation path that extends from the heat exchanger to the storage tank. The pressure-responsive throttle valve for increasing or decreasing the flow rate of the slurry is provided.
【０００６】貯留槽内のスラリの温度が目標温度よりも
上昇すると、制御装置は、閉状態の圧力応動型絞り弁を
開き、充分冷却された熱交換器内のスラリを貯留槽に帰
還させ、貯留槽内のスラリの温度が目標温度まで下降す
ると、圧力応動型絞り弁を閉じる。このように、予め充
分に冷却された切削微粉末含有スラリの帰還量を直接制
御することができる。したがって、温度制御の応答速度
を増大させ、応答性を向上させることができる。When the temperature of the slurry in the storage tank rises above the target temperature, the controller opens the pressure-responsive throttle valve in the closed state to return the sufficiently cooled slurry in the heat exchanger to the storage tank. When the temperature of the slurry in the storage tank drops to the target temperature, the pressure-responsive throttle valve is closed. In this way, it is possible to directly control the return amount of the slurry containing cutting fine powder that has been sufficiently cooled in advance. Therefore, the response speed of temperature control can be increased and the responsiveness can be improved.
【０００７】[0007]
【実施例】図１に示すように、ワイヤソー用のスラリ温
度制御装置１は、ワイヤソーのスラリ冷却装置２５に組
み込まれ、温度センサ２と、制御器３と、制御弁４と、
圧力応動型絞り弁５とを具備する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a slurry temperature control device 1 for a wire saw is incorporated in a slurry cooling device 25 for a wire saw, and a temperature sensor 2, a controller 3, a control valve 4 and
The pressure-responsive throttle valve 5 is provided.
【０００８】前記スラリ冷却装置２５は、切削微粉末お
よび冷却油からなるスラリ７を貯留槽６に溜めておき、
貯留槽６内のスラリ７を循環路２７ａ、２７ｂおよび循
環ポンプ２９により冷却対象１０に循環状態で供給する
とともに、貯留槽６内のスラリ７を熱交換器１４へ循環
路１５ａ、１５ｂおよびポンプ２８により供給し、熱交
換器１４内で冷媒としての冷却水２６によりスラリ７を
冷却する。The slurry cooling device 25 stores a slurry 7 composed of cutting fine powder and cooling oil in a storage tank 6,
The slurry 7 in the storage tank 6 is supplied to the cooling target 10 in a circulating state by the circulation paths 27a and 27b and the circulation pump 29, and the slurry 7 in the storage tank 6 is supplied to the heat exchanger 14 by the circulation paths 15a and 15b and the pump 28. And the slurry 7 is cooled in the heat exchanger 14 by the cooling water 26 as a refrigerant.
【０００９】前記温度センサ２は、貯留槽６内に設けら
れ、貯留槽６内のスラリ７の温度ｔを検出する。前記制
御器３は、温度センサ２によって検出された温度ｔが温
度設定器８から送られてきた目標温度ｔ0 より大きいと
きに制御出力信号を発生し、制御弁４に送る。The temperature sensor 2 is provided in the storage tank 6 and detects the temperature t of the slurry 7 in the storage tank 6. The controller 3 generates a control output signal when the temperature t detected by the temperature sensor 2 is higher than the target temperature t 0 sent from the temperature setter 8, and sends it to the control valve 4.
【００１０】この制御弁４は、例えば２位置３ポート型
で、制御出力信号の有無によって圧力流体としての圧縮
エア９の給排を制御する。すなわち、排気ポートＲにサ
イレンサ１１を接続し、ソレノイド１２のオフ動作、つ
まりノーマル位置でバネ１３の付勢力により排気を大気
に逃がし、ソレノイド１２のオン動作により圧縮エア源
３０から圧縮エア９を入力ポートＡを経て出力ポートＢ
から供給する。The control valve 4 is, for example, a 2-position 3-port type, and controls the supply and discharge of the compressed air 9 as a pressure fluid depending on the presence or absence of a control output signal. That is, a silencer 11 is connected to the exhaust port R, the solenoid 12 is turned off, that is, the biasing force of the spring 13 causes the exhaust gas to escape to the atmosphere, and the solenoid 12 is turned on to input the compressed air 9 from the compressed air source 30. Output port B through port A
Supplied from
【００１１】熱交換器１４から貯留槽６に至る循環路１
５ｂに、圧力応動型絞り弁５が設けられ、この圧力応動
型絞り弁５は、圧縮エア９の給排によりスラリ７の流量
を増減させる。すなわち、図２に示すように、筒体１７
内にスリーブ１６がアダプタ１８を介して取り付けら
れ、このスリーブ１６は、ゴム製で、半径方向に弾性的
に膨縮し、スラリ７の流動に対して耐磨耗性を有する内
周面で流路３１が形成されている。スリーブ１６の外周
面と筒体１７の内周面とで筒状の空気圧室２０が形成さ
れ、この空気圧室２０にポート２１を介して圧縮エア９
が給排され、圧縮エア９の供給により、流路３１が閉
じ、圧縮エア９の排気により、流路３１が開く。また、
貯留槽６から熱交換器１４に至る循環路１５ａに循環ポ
ンプ２８が設けられ、この循環ポンプ２８は、スラリ７
の帰還中、貯留槽６内のスラリ７を熱交換器１４に供給
する。Circulation path 1 from heat exchanger 14 to storage tank 6
A pressure-responsive throttle valve 5 is provided at 5b, and the pressure-responsive throttle valve 5 increases or decreases the flow rate of the slurry 7 by supplying and discharging compressed air 9. That is, as shown in FIG.
A sleeve 16 is mounted in the inside via an adapter 18, and the sleeve 16 is made of rubber and elastically expands and contracts in a radial direction, and flows on an inner peripheral surface having abrasion resistance against the flow of the slurry 7. A passage 31 is formed. A cylindrical air pressure chamber 20 is formed by the outer peripheral surface of the sleeve 16 and the inner peripheral surface of the cylindrical body 17, and the compressed air 9 is formed in the air pressure chamber 20 via the port 21.
Are supplied and discharged, and the flow passage 31 is closed by the supply of the compressed air 9, and the flow passage 31 is opened by the discharge of the compressed air 9. Also,
A circulation pump 28 is provided in the circulation path 15a extending from the storage tank 6 to the heat exchanger 14.
During the return of, the slurry 7 in the storage tank 6 is supplied to the heat exchanger 14.
【００１２】次に、本実施例の作用を説明する。循環ポ
ンプ２９の駆動により貯留槽６内のスラリ７を循環路２
７ａ、２７ｂを介してワークなどの冷却対象１０に供給
し続けると、貯留槽６内のスラリ７の温度ｔは冷却対象
１０の熱を吸収することによって、上昇する。これを温
度センサ２が検出し、制御器３に送る。Next, the operation of this embodiment will be described. By driving the circulation pump 29, the slurry 7 in the storage tank 6 is circulated to the circulation path 2
When the supply to the cooling target 10 such as the work is continued via 7a and 27b, the temperature t of the slurry 7 in the storage tank 6 increases by absorbing the heat of the cooling target 10. The temperature sensor 2 detects this and sends it to the controller 3.
【００１３】制御器３では、温度センサ２からの検出温
度ｔが目標温度ｔ0 よりも大きいとき、制御出力信号を
発生させ、制御弁４にオフ動作を、循環ポンプ２８にオ
ン動作をそれぞれ指令する。この指令により、圧力応動
型絞り弁５は開き、充分冷却された熱交換器１４内のス
ラリ７は貯留槽６に帰還する。また、循環ポンプ２８の
駆動により、貯留槽６内の昇温したスラリ７は、熱交換
器１４に供給され、供給分だけ減少する。When the detected temperature t from the temperature sensor 2 is higher than the target temperature t 0 , the controller 3 generates a control output signal to instruct the control valve 4 to turn off and the circulation pump 28 to turn on. To do. In response to this command, the pressure-responsive throttle valve 5 is opened, and the sufficiently cooled slurry 7 in the heat exchanger 14 is returned to the storage tank 6. Further, by driving the circulation pump 28, the temperature of the slurry 7 heated in the storage tank 6 is supplied to the heat exchanger 14, and the supply amount of the slurry 7 decreases.
【００１４】このため、貯留槽６内のスラリ７の温度ｔ
が急速に下降し、目標温度ｔ0 に達すると、制御器３
は、制御出力信号の発生を停止させ、制御弁４にオン動
作を、循環ポンプ２８にオフ動作をそれぞれ指令する。
この指令により、圧力応動型絞り弁５は閉じ、循環ポン
プ２８は停止する。既に供給された熱交換器１４内のス
ラリ７は、冷却水２６により充分に冷却され、貯留槽６
内のスラリ７の次の冷却時に備える。このようなオン・
オフ制御により、貯留槽６内のスラリ７の温度ｔは目標
温度ｔ0 に制御される。Therefore, the temperature t of the slurry 7 in the storage tank 6 is
Rapidly decreases and reaches the target temperature t 0 , the controller 3
Stops the generation of the control output signal, and commands the control valve 4 to turn on and the circulation pump 28 to turn off.
By this command, the pressure-responsive throttle valve 5 is closed and the circulation pump 28 is stopped. The slurry 7 in the heat exchanger 14 that has already been supplied is sufficiently cooled by the cooling water 26, and the storage tank 6
Prepare for the next cooling of the slurry 7 inside. On like this
By the off control, the temperature t of the slurry 7 in the storage tank 6 is controlled to the target temperature t 0 .
【００１５】このように、貯留槽６内のスラリ７の冷却
時に、熱交換器１４での熱交換過程を経ることなく、予
め充分に冷却された必要量の切削微粉末含有スラリ７を
直接供給することができる。したがって、温度制御の応
答速度を増大させ、応答性を向上させることができる。
また、前記圧力応動型絞り弁５は、筒体１７と、この筒
体１７内に設けられるスリーブ１６と、このスリーブ１
６の外周面と筒体１７の内周面とで形成される空気圧室
２０とを備え、摺動部分を有しない構成としたので、ス
ラリ７中の切削微粉末が弁の開閉部分に詰まったり、食
い込んだりせず制御不能とならず、また寿命を延ばすこ
とができる。As described above, when the slurry 7 in the storage tank 6 is cooled, a sufficient amount of the cutting fine powder-containing slurry 7 that has been sufficiently cooled in advance is directly supplied without undergoing a heat exchange process in the heat exchanger 14. can do. Therefore, the response speed of temperature control can be increased and the responsiveness can be improved.
The pressure-responsive throttle valve 5 includes a tubular body 17, a sleeve 16 provided in the tubular body 17, and the sleeve 1.
Since the pneumatic chamber 20 formed by the outer peripheral surface of 6 and the inner peripheral surface of the cylindrical body 17 is provided and has no sliding portion, the cutting fine powder in the slurry 7 is clogged in the opening / closing portion of the valve. , It does not go out of control without biting, and the life can be extended.
【００１６】[0016]
【他の実施例】本発明は、切削微粉末含有スラリ７を用
いた工作機械のスラリ冷却装置に適用することもでき
る。前記実施例において、冷媒として、液化ガスあるい
はフロンガスを用いることもできる。また圧力流体とし
て、油圧を用いることもできる。Other Embodiments The present invention can also be applied to a slurry cooling device for machine tools using the slurry 7 containing fine cutting powder. In the above embodiment, liquefied gas or CFC gas may be used as the refrigerant. Hydraulic pressure can also be used as the pressure fluid.
【００１７】また、前記実施例のものは、オンオフ制御
方式となっているが、制御弁４として、リリーフ用の電
磁弁と給気用の電磁弁とを内蔵した圧力制御弁を設け、
検出した温度ｔと目標温度ｔ0 との偏差量に対応した信
号により両電磁弁を操作し、圧力応動型絞り弁５への圧
縮エア９の給排量を偏差量に比例する状態で制御し、こ
れにより、空気圧室２０内の圧縮エア９の圧力を変えて
流路３１の断面積を連続的に変化させれば、スラリ温度
制御装置１を比例制御方式のものとして構成することも
できる。Further, although the above-mentioned embodiment is an on / off control system, as the control valve 4, a pressure control valve having a relief solenoid valve and an air supply solenoid valve built therein is provided.
Both solenoid valves are operated by a signal corresponding to the deviation amount between the detected temperature t and the target temperature t 0 to control the supply / discharge amount of the compressed air 9 to / from the pressure-responsive throttle valve 5 in a state proportional to the deviation amount. Accordingly, if the pressure of the compressed air 9 in the air pressure chamber 20 is changed to continuously change the cross-sectional area of the flow path 31, the slurry temperature control device 1 can be configured as a proportional control system.
【００１８】[0018]
【発明の効果】以上の説明から明らかなように、本発明
によれば、以下の効果が得られる。すなわち、熱交換器
から貯留槽に至る循環路に、圧力流体の給排によりスラ
リの流量を増減させる圧力応動型絞り弁を設けたので、
スラリの冷却動作時に、予め充分に冷却されかつ必要な
量として貯えられた切削微粉末含有スラリの帰還量を直
接制御することができる。したがって、冷却動作時に、
熱交換器側で現在の冷却のための熱交換が必要とされ
ず、温度制御の応答速度を増大させ、応答性を向上させ
ることができる。As is apparent from the above description, according to the present invention, the following effects can be obtained. That is, since the circulation path from the heat exchanger to the storage tank is provided with the pressure-responsive throttle valve that increases or decreases the flow rate of the slurry by supplying and discharging the pressure fluid,
During the slurry cooling operation, it is possible to directly control the returning amount of the slurry containing the cutting fine powder which has been sufficiently cooled and stored as a necessary amount. Therefore, during the cooling operation,
No heat exchange is currently required for cooling on the heat exchanger side, and the response speed of temperature control can be increased and the responsiveness can be improved.
【図１】ワイヤソー用のスラリ温度制御装置を示すブロ
ック線図である。FIG. 1 is a block diagram showing a slurry temperature control device for a wire saw.
【図２】図１の圧力応動型絞り弁を示す断面図である。FIG. 2 is a sectional view showing the pressure-responsive throttle valve of FIG.
１ ワイヤソー用のスラリ温度制御装置 ２ 温度センサ ３ 制御器 ４ 制御弁 ５ 圧力応動型絞り弁 ６ 貯留槽 ７ スラリ ８ 温度設定器 ９ 圧縮エア（圧力流体） １０ 冷却対象 １１ サイレンサ １２ ソレノイド １３ バネ １４ 熱交換器 １５ａ 循環路 １５ｂ 循環路 １６ スリーブ １７ 筒体 １８ アダプタ ２０ 空気圧室 ２１ ポート ２５ スラリ冷却装置 ２６ 冷却水（冷媒） ２７ａ 循環路 ２７ｂ 循環路 ２８ 循環ポンプ ２９ 循環ポンプ ３０ 圧縮エア源 ３１ 流路 ｔ 温度 ｔ0 目標温度 Ａ 入力ポート Ｂ 出力ポート Ｒ 排気ポート1 Slurry temperature control device for wire saw 2 Temperature sensor 3 Controller 4 Control valve 5 Pressure responsive throttle valve 6 Storage tank 7 Slurry 8 Temperature setting device 9 Compressed air (pressure fluid) 10 Cooling target 11 Silencer 12 Solenoid 13 Spring 14 Heat 14 Exchanger 15a Circulation path 15b Circulation path 16 Sleeve 17 Cylindrical body 18 Adapter 20 Air pressure chamber 21 Port 25 Slurry cooling device 26 Cooling water (refrigerant) 27a Circulation path 27b Circulation path 28 Circulation pump 29 Circulation pump 30 Compressed air source 31 Flow path t Temperature t 0 Target temperature A Input port B Output port R Exhaust port
Claims (1)
（７）を貯留槽（６）に溜めておき、貯留槽（６）内の
スラリ（７）を循環路（２７ａ、２７ｂ）により冷却対
象（１０）に循環状態で供給するとともに、貯留槽
（６）内のスラリ（７）を熱交換器（１４）へ循環路
（１５ａ、１５ｂ）により供給し、熱交換器（１４）内
で冷媒（２６）によりスラリ（７）を冷却するワイヤソ
ーのスラリ冷却装置（２５）において、 貯留槽（６）内のスラリ（７）の温度（ｔ）を検出する
温度センサ（２）と、この温度センサ（２）によって検
出された温度（ｔ）が目標温度（ｔ0 ）より大きいとき
に制御出力信号を発生させる制御器（３）と、この制御
器（３）からの制御出力信号によって圧力流体（９）の
給排を制御する制御弁（４）と、前記熱交換器（１４）
から貯留槽（６）に至る循環路（１５ｂ）に設けられ、
圧力流体（９）の給排によりスラリ（７）の流量を増減
させる圧力応動型絞り弁（５）とを具備することを特徴
とするワイヤソー用のスラリ温度制御装置（１）。1. A slurry (7) made of fine cutting powder and cooling oil is stored in a storage tank (6), and the slurry (7) in the storage tank (6) is cooled by a circulation path (27a, 27b). The slurry (7) in the storage tank (6) is supplied to the heat exchanger (14) through the circulation paths (15a, 15b) while being supplied to the heat exchanger (14) in a circulating state, and the refrigerant is supplied in the heat exchanger (14). A temperature sensor (2) for detecting the temperature (t) of the slurry (7) in the storage tank (6) and a temperature sensor (2) for the slurry cooling device (25) for a wire saw that cools the slurry (7) by (26). A controller (3) for generating a control output signal when the temperature (t) detected by (2) is higher than the target temperature (t 0 ), and a pressure fluid () generated by the control output signal from the controller (3). 9) control valve (4) for controlling the supply and discharge of the heat, Exchanger (14)
Is provided in the circulation path (15b) from the storage tank (6) to the storage tank (6),
A slurry temperature control device (1) for a wire saw, comprising: a pressure-responsive throttle valve (5) for increasing / decreasing a flow rate of the slurry (7) by supplying / discharging a pressure fluid (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34320493A JPH07171753A (en) | 1993-12-17 | 1993-12-17 | Device for controlling slurry temperature for wire saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34320493A JPH07171753A (en) | 1993-12-17 | 1993-12-17 | Device for controlling slurry temperature for wire saw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07171753A true JPH07171753A (en) | 1995-07-11 |
Family
ID=18359726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34320493A Pending JPH07171753A (en) | 1993-12-17 | 1993-12-17 | Device for controlling slurry temperature for wire saw |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07171753A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6773333B2 (en) | 2001-05-10 | 2004-08-10 | Siltronic Ag | Method for cutting slices from a workpiece |
| CN112192415A (en) * | 2020-08-31 | 2021-01-08 | 衡阳迈特制动系统有限公司 | Cutting device is used in brake block processing |
-
1993
- 1993-12-17 JP JP34320493A patent/JPH07171753A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6773333B2 (en) | 2001-05-10 | 2004-08-10 | Siltronic Ag | Method for cutting slices from a workpiece |
| DE10122628B4 (en) * | 2001-05-10 | 2007-10-11 | Siltronic Ag | Method for separating slices from a workpiece |
| CN112192415A (en) * | 2020-08-31 | 2021-01-08 | 衡阳迈特制动系统有限公司 | Cutting device is used in brake block processing |
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