JPH0776694B2 - Clog measuring device - Google Patents
Clog measuring deviceInfo
- Publication number
- JPH0776694B2 JPH0776694B2 JP21163293A JP21163293A JPH0776694B2 JP H0776694 B2 JPH0776694 B2 JP H0776694B2 JP 21163293 A JP21163293 A JP 21163293A JP 21163293 A JP21163293 A JP 21163293A JP H0776694 B2 JPH0776694 B2 JP H0776694B2
- Authority
- JP
- Japan
- Prior art keywords
- compressed air
- air tank
- clogging
- flow hole
- measured
- 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
- Measuring Arrangements Characterized By The Use Of Fluids (AREA)
- Examining Or Testing Airtightness (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、測定対象物の複雑な形
状の流通孔が目詰まりしているか否かを容易に検査する
ことができる目詰まり測定器に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clogging measuring device which can easily inspect whether or not a complicated shape of a through hole of a measuring object is clogged.
【０００２】[0002]
【従来の技術】例えば自動車のエンジンブロックやデフ
キャリアのような多数の流通孔を有する製品の製造工程
においては、その流通孔の内部が切粉や鋳造欠陥等によ
り目詰まりしていないことを確認する必要がある。従
来、このような検査は肉眼によって行われていたのであ
るが、流通孔が直線状のものである場合には容易に検査
することができるものの、途中で屈曲している流通孔に
ついてはその目詰まりの有無を検査することは容易では
なく、きわめて煩雑な手数を要していた。2. Description of the Related Art In the manufacturing process of a product having a large number of through holes such as an automobile engine block or a differential carrier, it is confirmed that the inside of the through holes is not clogged due to chips or casting defects. There is a need to. Conventionally, such an inspection was performed by the naked eye, but if the through hole is a straight one, it can be easily inspected, but if the through hole is bent in the middle, the It was not easy to inspect for the presence or absence of clogging, and it was extremely troublesome.
【０００３】[0003]
【発明が解決しようとする課題】本発明は上記した従来
の問題点を解決して、測定対象物の非直線状の流通孔に
ついても、容易に目詰まりの程度を測定し、その結果を
自動的に表示させることができる目詰まり測定器を提供
するために完成されたものである。DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned conventional problems, and easily measures the degree of clogging of a non-linear flow hole of an object to be measured, and the result is automatically calculated. The present invention has been completed to provide a clogging measuring device that can be displayed on a screen.
【０００４】[0004]
【課題を解決するための手段】上記の課題を解決するた
めになされた本発明の目詰まり測定器は、測定対象物の
流通孔に空気洩れなく密着できる測定ヘッドと、温度検
出手段及び圧力検出手段を備えた圧縮空気タンクと、圧
縮空気タンクと測定ヘッドとの間に設けられ、測定対象
物の流通孔の有効断面積よりも十分に大きい有効断面積
を持つソレノイドバルブと、空気吹き込みによる圧縮空
気タンクの内圧低下速度を測定するタイマーと、圧縮空
気の温度、圧力及びタイマーにより測定された内圧低下
速度から流通孔の目詰まり状態を演算する演算表示部
と、圧縮空気タンクを繰り返し充填使用するための圧縮
空気充填用ソレノイドバルブとからなることを特徴とす
るものである。The clogging measuring instrument of the present invention, which has been made to solve the above-mentioned problems, has a measuring head capable of closely contacting a through hole of a measuring object without air leakage, a temperature detecting means and a pressure detecting means. A compressed air tank provided with a means, a solenoid valve provided between the compressed air tank and the measuring head, having an effective area that is sufficiently larger than the effective area of the flow hole of the object to be measured, and compression by air blowing A timer that measures the rate of decrease in the internal pressure of the air tank, a calculation display that calculates the clogging state of the flow holes from the temperature and pressure of the compressed air, and the rate of decrease in the internal pressure that is measured by the timer, and repeatedly fills the compressed air tank. And a solenoid valve for charging compressed air for the purpose.
【０００５】[0005]
【作用】本発明の目詰まり測定器を使用するには、まず
圧縮空気タンク内の圧力を例えば5kgf/cm2としたうえ、
測定ヘッドを測定対象物の流通孔の開口部に密着させ、
演算表示部の制御下にあるソレノイドバルブを開く。そ
の結果、圧縮空気タンク内の圧縮空気が測定対象物の流
通孔に吹き込まれ、圧縮空気タンク内の圧力は次第に低
下するので、圧力が所定値（例えば2kgf/cm2）まで低下
するに要する時間をタイマーによって測定する。あるい
はソレノイドバルブを開いた後、所定時間経過時点にお
ける圧縮空気タンク内の圧力を測定し、圧縮空気タンク
の内圧低下速度を求める。演算表示部は圧縮空気の温
度、圧力及びタイマーにより測定された内圧低下速度か
ら流通孔の目詰まり状態を演算し、その結果を表示器に
自動的に表示する。このように本発明の目詰まり測定器
によれば自動的に目詰まりの検査を行うことができ、肉
眼によっては検査が困難な屈曲した流通孔についても容
易かつ確実に検査を行うことができる。To use the clogging measuring device of the present invention, first set the pressure in the compressed air tank to 5 kgf / cm 2, and
Adhere the measurement head to the opening of the flow hole of the object to be measured,
Open the solenoid valve under the control of the calculation display. As a result, the compressed air in the compressed air tank is blown into the flow hole of the object to be measured, and the pressure in the compressed air tank gradually decreases, so the time required for the pressure to decrease to a specified value (for example, 2 kgf / cm 2 ). Is measured by a timer. Alternatively, after the solenoid valve is opened, the pressure in the compressed air tank is measured at the time when a predetermined time has elapsed, and the rate of decrease in the internal pressure of the compressed air tank is obtained. The calculation display unit calculates the clogging state of the flow holes from the temperature and pressure of the compressed air and the internal pressure decrease speed measured by the timer, and automatically displays the result on the display. As described above, according to the clogging measuring instrument of the present invention, the clogging can be automatically inspected, and the curved flow hole, which is difficult to inspect with the naked eye, can be easily and surely inspected.
【０００６】[0006]
【実施例】以下に本発明を図示の実施例によって更に詳
細に説明する。図１は実施例を回路図として示したもの
で、１は圧縮空気タンク、２はその圧力検出手段である
圧力スイッチ、３はその温度検出手段である温度計であ
る。この圧縮空気タンク１は圧縮空気充填用ソレノイド
バルブ４を介して圧縮空気源に接続されており、繰り返
し充填が可能となっている。圧縮空気タンク１内の圧縮
空気はソレノイドバルブ５を介して測定ヘッド６に送ら
れ、測定対象物Ｗの流通孔に吹き込まれるようになって
いる。この測定ヘッド６は測定対象物(W) の流通孔に空
気洩れなく密着できる構造を有するもので、自動的に測
定対象物(W) の流通孔に密着できる構造としておくこと
が好ましい。The present invention will be described below in more detail with reference to the illustrated embodiments. FIG. 1 shows an embodiment as a circuit diagram, in which 1 is a compressed air tank, 2 is a pressure switch as its pressure detecting means, and 3 is a thermometer as its temperature detecting means. The compressed air tank 1 is connected to a compressed air source via a compressed air charging solenoid valve 4 and can be repeatedly charged. The compressed air in the compressed air tank 1 is sent to the measuring head 6 via the solenoid valve 5 and blown into the flow hole of the measuring object W. The measuring head 6 has a structure capable of being brought into close contact with the flow hole of the object to be measured (W) without air leakage, and preferably has a structure capable of being brought into close contact with the flow hole of the object to be measured (W) automatically.
【０００７】ソレノイドバルブ５は測定対象物(W) の流
通孔の有効断面積よりも十分に大きい有効断面積を持つ
もので、単一のソレノイドバルブ５を使用してもよい
が、この実施例では有効断面積の異なる３種類のソレノ
イドバルブ５を並列に接続し、測定対象物(W) の流通孔
の有効断面積に応じて選択的に使用できるようになって
いる。例えば各ソレノイドバルブ５の有効断面積をそれ
ぞれS1,S2,S3とすると、S1,S2,S3,S1+S2,S1+S3,S2+S3,S
1+S2+S3 の合計７通りの使用が可能となる。The solenoid valve 5 has an effective area which is sufficiently larger than the effective area of the flow hole of the object to be measured (W), and a single solenoid valve 5 may be used. In the above, three types of solenoid valves 5 having different effective sectional areas are connected in parallel so that they can be selectively used according to the effective sectional areas of the flow holes of the object to be measured (W). For example, if the effective sectional areas of the solenoid valves 5 are S 1 , S 2 , S 3 , respectively, S 1 , S 2 , S 3 , S 1 + S 2 , S 1 + S 3 , S 2 + S 3 , S
1 + S 2 + S 3 can be used in total of 7 ways.
【０００８】７は全体の動作を制御する制御ボックスで
あり、演算器８とタイマー９と表示ランプのような表示
器10とからなる演算表示部11を備えている。制御ボック
ス７には圧力検出手段２や温度検出手段３から圧縮空気
タンク１の温度と圧力が入力されている。また制御ボッ
クス７は３種類のソレノイドバルブ５や圧縮空気充填用
ソレノイドバルブ４の動作を制御している。Reference numeral 7 is a control box for controlling the entire operation, and is provided with a calculation display section 11 including a calculation unit 8, a timer 9 and a display unit 10 such as a display lamp. The temperature and pressure of the compressed air tank 1 are input to the control box 7 from the pressure detecting means 2 and the temperature detecting means 3. The control box 7 controls the operation of the three types of solenoid valves 5 and the compressed air filling solenoid valve 4.
【０００９】図２は実施例の装置を斜視図で示したもの
で、図１に対応する部品に同一の番号を付してある。こ
こでは測定対象物Ｗとして自動車のデフキャリヤが示さ
れており、測定ヘッド４がシリンダ12によって自動的に
デフキャリヤの端面に押し付けられ、流通孔に圧縮空気
が吹き込まれる構造となっている。FIG. 2 is a perspective view of the apparatus of the embodiment, in which parts corresponding to those in FIG. 1 are designated by the same reference numerals. Here, a differential carrier of an automobile is shown as the measuring object W, and the measuring head 4 is automatically pressed against the end surface of the differential carrier by the cylinder 12 so that compressed air is blown into the flow hole.
【００１０】なお、図１の実施例では測定対象物Ｗの流
通孔の有効断面積に応じて選択的に使用できるように３
種類のソレノイドバルブ５を並列に接続した例を示した
のであるが、測定対象物Ｗの流通孔の有効断面積に応じ
て選択的に使用される複数個の圧縮空気タンク(1) を並
列に設けておくことも可能である。このようにすれば、
測定レンジを一段と拡げることができる。またソレノイ
ドバルブ５は、図３に示すように配置することもでき、
種々の変形が可能であることはいうまでもない。It should be noted that in the embodiment shown in FIG. 1, the measuring object W can be selectively used depending on the effective sectional area of the through hole.
An example is shown in which different types of solenoid valves 5 are connected in parallel. A plurality of compressed air tanks (1) that are selectively used according to the effective cross-sectional area of the flow hole of the object to be measured W are connected in parallel. It is also possible to provide it. If you do this,
The measurement range can be expanded further. The solenoid valve 5 can also be arranged as shown in FIG.
It goes without saying that various modifications are possible.
【００１１】次にこの目詰まり測定器の使用方法を説明
する。まず、圧縮空気タンク１内の圧力を基準圧力（例
えば5kg/cm2 ）としておき、図示しない測定開始ボタン
をオンとすると、制御ボックス７よりソレノイドバルブ
５が「閉」状態にあるか否かの確認動作が開始される。
ソレノイドバルブ５が「開」状態にある場合には安全
性、経済性確保のため、異常信号が発せられる。ソレノ
イドバルブ５が「閉」状態にある場合には、圧縮空気充
填用ソレノイドバルブ４が「開」状態となり、圧縮空気
源より圧縮空気タンク１に圧縮空気が充填される。そし
て圧縮空気タンク１内の圧力が所定値に達したことを圧
力検出手段２が検出し、制御ボックス７より圧縮空気充
填用ソレノイドバルブ４に充填完了信号（圧縮空気充填
用ソレノイドバルブ４オフ）が出力され、測定準備完了
となる。Next, a method of using the clogging measuring device will be described. First, when the pressure in the compressed air tank 1 is set to a reference pressure (for example, 5 kg / cm 2 ) and a measurement start button (not shown) is turned on, whether or not the solenoid valve 5 is in the “closed” state from the control box 7 is checked. The confirmation operation is started.
When the solenoid valve 5 is in the "open" state, an abnormal signal is issued to ensure safety and economy. When the solenoid valve 5 is in the "closed" state, the compressed air filling solenoid valve 4 is in the "open" state, and the compressed air tank 1 is filled with the compressed air from the compressed air source. Then, the pressure detection means 2 detects that the pressure in the compressed air tank 1 has reached a predetermined value, and the control box 7 sends a filling completion signal (compressed air filling solenoid valve 4 off) to the compressed air filling solenoid valve 4. It is output and the measurement is ready.
【００１２】次いで制御ボックス７の指示により、いず
れかのソレノイドバルブ５が開かれる。それと同時に圧
縮空気タンク１から圧縮空気が測定ヘッド６に送られ、
測定ヘッド６を介して測定対象物Ｗの流通孔に吹き込ま
れる。この吹き込みに連れて圧縮空気タンク１内の圧力
は次第に低下するが、流通孔が目詰まりしていると圧力
低下は緩やかであり、流通孔が目詰まりしていない場合
には圧力低下は速やかである。そこで吹き込み開始から
圧力が例えば2kgf/cm2となるまでの時間をタイマー９に
よって測定し、2kgf/cm2となると同時にソレノイドバル
ブ５を閉じるとともに、タイマー９も停止させる。Then, according to an instruction from the control box 7, one of the solenoid valves 5 is opened. At the same time, compressed air is sent from the compressed air tank 1 to the measuring head 6,
It is blown into the flow hole of the measuring object W via the measuring head 6. The pressure in the compressed air tank 1 gradually decreases with this blowing, but if the flow holes are clogged, the pressure drop is slow, and if the flow holes are not clogged, the pressure drop is rapid. is there. Therefore blowing the time from the start until the pressure is, for example, 2 kgf / cm 2 as measured by the timer 9, closes the solenoid valve 5 at the same time a 2 kgf / cm 2, the timer 9 is also stopped.
【００１３】このようにして内圧低下速度の測定が終了
したら、そのデータが演算表示部11に送られて流通孔の
有効断面積が算出される。測定された時間をｔ秒とし、
圧縮空気タンク１の容積をＶリットルとし、絶対温度を
Ｔ度とすると、流通孔の有効断面積Ｓmm2 は次式によっ
て求められる。 Ｓ＝12.9Ｖ／ｔ×log(6.03/3.03)×(273/ Ｔ)1/2 その結果は設定値と比較され、有効断面積Ｓの大きさに
よって良否の判定が下される。その結果は表示ランプの
ような表示器10により示される。なお、本発明において
は流通孔の有効断面積Ｓの絶対値を演算することは必須
要件ではなく、予め限度見本等によって許容範囲を設定
しておき、相対比較によって良否の判断を行うことも可
能である。When the measurement of the internal pressure decrease rate is completed in this way, the data is sent to the calculation display section 11 to calculate the effective cross-sectional area of the flow hole. Let the measured time be t seconds,
Assuming that the volume of the compressed air tank 1 is V liter and the absolute temperature is T degrees, the effective cross-sectional area Smm 2 of the flow hole is calculated by the following equation. S = 12.9V / t × log (6.03 / 3.03) × (273 / T) 1/2 The result is compared with the set value, and the quality is judged by the size of the effective area S. The result is indicated by an indicator 10 such as an indicator lamp. In the present invention, it is not an essential requirement to calculate the absolute value of the effective cross-sectional area S of the flow hole, and it is also possible to set the allowable range in advance by a limit sample or the like and judge the quality by relative comparison. Is.
【００１４】なお、上記のように圧縮空気タンク１内の
圧力が基準圧力から所定圧力まで低下するに要する時間
を測定する方法のほか、所定時間内における圧縮空気タ
ンク１内の圧力低下を測定し、これによって圧縮空気タ
ンク１の内圧低下速度の測定を行うこともできる。この
方法によれば圧縮空気の使用量を抑制できる利点があ
る。In addition to the method of measuring the time required for the pressure in the compressed air tank 1 to drop from the reference pressure to the predetermined pressure as described above, the pressure drop in the compressed air tank 1 within the predetermined time is measured. Therefore, the rate of decrease in the internal pressure of the compressed air tank 1 can be measured. This method has an advantage that the amount of compressed air used can be suppressed.
【００１５】このようにして１回の測定が終了したら、
制御ボックス７の指示により充填用ソレノイドバルブ４
が開かれ、圧縮空気源から圧縮空気が圧縮空気タンク１
に充填されされる。また、圧縮空気タンク１からの空気
放出によりその内部の温度が低下し、しばらくすると室
温に復帰することとなるので、このよう温度変動による
測定誤差を避けるためにタイマーにより測定タクトを設
定できるようにしておくことが好ましい。When one measurement is completed in this way,
The solenoid valve 4 for filling is instructed by the control box 7.
Is opened and compressed air from compressed air source is compressed air tank 1
Is filled. In addition, the temperature inside the compressed air tank 1 decreases due to air release from the compressed air tank 1, and the temperature returns to room temperature after a while. Therefore, in order to avoid a measurement error due to such temperature fluctuation, it is possible to set a measurement tact by a timer. It is preferable to keep.
【００１６】[0016]
【発明の効果】以上に説明したように、本発明の目詰ま
り測定器によれば、圧縮空気の吹き込みにより測定対象
物の流通孔の目詰まり状態の判定を行うようにしたの
で、途中で屈曲している流通孔についても目詰まりの有
無を正確に、かつ自動的に検査することができる。この
ため、複雑な形状の流通孔を持つ自動車用部品等の検査
を迅速に行うことができる利点がある。また本発明によ
れば測定対象物の流通孔に対して圧縮空気を吹き込むの
で、内部に詰まったごみ等を吹き飛ばすことができる利
点もある。As described above, according to the clogging measuring instrument of the present invention, the clogging state of the flow hole of the object to be measured is judged by blowing the compressed air, so that the clogging in the middle is bent. The presence or absence of clogging can also be accurately and automatically inspected for the circulation holes. Therefore, there is an advantage that it is possible to quickly inspect an automobile part or the like having a complicatedly shaped through hole. Further, according to the present invention, since compressed air is blown into the flow hole of the object to be measured, there is also an advantage that dust or the like stuck inside can be blown off.
【図１】本発明の実施例を示す回路図である。FIG. 1 is a circuit diagram showing an embodiment of the present invention.
【図２】本発明の実施例を示す斜視図である。FIG. 2 is a perspective view showing an embodiment of the present invention.
【図３】本発明の他の実施例を示す回路図である。FIG. 3 is a circuit diagram showing another embodiment of the present invention.
１ 圧縮空気タンク ２ 圧力検出手段である圧力スイッチ ３ 温度検出手段である温度計 ４ 圧縮空気充填用ソレノイドバルブ ５ ソレノイドバルブ ６ 測定ヘッド ７ 制御ボックス ８ 演算器 ９ タイマー 10 表示器 11 演算表示部 12 シリンダ Ｗ 測定対象物 1 Compressed air tank 2 Pressure switch which is pressure detecting means 3 Thermometer which is temperature detecting means 4 Solenoid valve for charging compressed air 5 Solenoid valve 6 Measuring head 7 Control box 8 Computing unit 9 Timer 10 Indicator 11 Computing display unit 12 Cylinder W measurement object
フロントページの続き (56)参考文献 特開 平１−196503（ＪＰ，Ａ) 特開 昭52−481（ＪＰ，Ａ) 特開 昭52−483（ＪＰ，Ａ) 実開 昭63−7344（ＪＰ，Ｕ) 実開 昭57−130209（ＪＰ，Ｕ) 実開 昭51−81745（ＪＰ，Ｕ) 特公 昭55−44322（ＪＰ，Ｂ２)Continuation of the front page (56) Reference JP-A-1-196503 (JP, A) JP-A-52-481 (JP, A) JP-A-52-483 (JP, A) Actual development Sho-63-7344 (JP , U) Actually open 57-130209 (JP, U) Actually open 51-81745 (JP, U) Japanese Patent Sho 55-44322 (JP, B2)
Claims (3)
密着できる測定ヘッド(6) と、温度検出手段及び圧力検
出手段を備えた圧縮空気タンク(1) と、圧縮空気タンク
(1) と測定ヘッド(6) との間に設けられ、測定対象物
(W) の流通孔の有効断面積よりも十分に大きい有効断面
積を持つソレノイドバルブ(5) と、空気吹き込みによる
圧縮空気タンク(1) の内圧低下速度を測定するタイマー
(9) と、圧縮空気の温度、圧力及びタイマー(9) により
測定された内圧低下速度から流通孔の目詰まり状態を演
算する演算表示部(11)と、圧縮空気タンク(1) を繰り返
し充填使用するための圧縮空気充填用ソレノイドバルブ
(4) とからなることを特徴とする目詰まり測定器。1. A measuring head (6) which can be brought into close contact with a flow hole of a measurement object (W) without air leakage, a compressed air tank (1) equipped with a temperature detecting means and a pressure detecting means, and a compressed air tank.
An object to be measured is provided between the measuring head (6) and the measuring head (6).
A solenoid valve (5) with an effective area that is sufficiently larger than the effective area of the (W) flow hole, and a timer that measures the internal pressure drop rate of the compressed air tank (1) due to air blowing.
(9), the temperature and pressure of the compressed air, and the calculation display unit (11) that calculates the clogging state of the flow holes from the internal pressure decrease rate measured by the timer (9), and the compressed air tank (1) is repeatedly filled. Solenoid valve for compressed air filling for use
(4) A clogging measuring instrument characterized by comprising:
応じて選択的に使用される複数個のソレノイドバルブ
(5) を持つ請求項１記載の目詰まり測定器。2. A plurality of solenoid valves selectively used according to the effective cross-sectional area of the flow hole of the object to be measured (W).
The clogging measuring device according to claim 1, which has (5).
応じて選択的に使用される複数個の圧縮空気タンク(1)
を持つ請求項１記載の目詰まり測定器。3. A plurality of compressed air tanks (1) that are selectively used according to the effective cross-sectional area of the flow hole of the measurement object (W).
The clogging measuring device according to claim 1, further comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21163293A JPH0776694B2 (en) | 1993-08-26 | 1993-08-26 | Clog measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21163293A JPH0776694B2 (en) | 1993-08-26 | 1993-08-26 | Clog measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0763541A JPH0763541A (en) | 1995-03-10 |
| JPH0776694B2 true JPH0776694B2 (en) | 1995-08-16 |
Family
ID=16608997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21163293A Expired - Fee Related JPH0776694B2 (en) | 1993-08-26 | 1993-08-26 | Clog measuring device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0776694B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001330593A (en) | 2000-05-19 | 2001-11-30 | Ryoei Engineering Kk | Communicating hole inspection method of cast molding and its device |
| JP2008296303A (en) * | 2007-05-30 | 2008-12-11 | Tokyo Seimitsu Co Ltd | Method of controlling pressure and temperature of compressed air for measuring machine |
| JP5143543B2 (en) * | 2007-08-30 | 2013-02-13 | 株式会社酉島製作所 | Pump bearing diagnosis apparatus and method |
| JP5294451B2 (en) * | 2008-08-29 | 2013-09-18 | アズビルＴａｃｏ株式会社 | Seating distance determination method and apparatus |
-
1993
- 1993-08-26 JP JP21163293A patent/JPH0776694B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0763541A (en) | 1995-03-10 |
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