JPH0262902A - Inside diameter measuring device - Google Patents
Inside diameter measuring deviceInfo
- Publication number
- JPH0262902A JPH0262902A JP21610788A JP21610788A JPH0262902A JP H0262902 A JPH0262902 A JP H0262902A JP 21610788 A JP21610788 A JP 21610788A JP 21610788 A JP21610788 A JP 21610788A JP H0262902 A JPH0262902 A JP H0262902A
- Authority
- JP
- Japan
- Prior art keywords
- probes
- measured
- measuring device
- main body
- inner diameter
- 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
- 239000000523 sample Substances 0.000 claims abstract description 20
- 210000000078 claw Anatomy 0.000 claims description 22
- 238000005259 measurement Methods 0.000 abstract description 12
- 230000002093 peripheral effect Effects 0.000 abstract description 9
- 239000000126 substance Substances 0.000 abstract 2
- 235000015842 Hesperis Nutrition 0.000 abstract 1
- 235000012633 Iberis amara Nutrition 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Landscapes
- A Measuring Device Byusing Mechanical Method (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、内径測定装置に係り、特に生産ラインにおい
て被測定物の内径を精密に測定する内径測定装置に関す
る。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an inner diameter measuring device, and more particularly to an inner diameter measuring device for precisely measuring the inner diameter of a workpiece in a production line.
従来内径測定装置として特開昭６１−５７８０５号公報
に開示されている。この内径測定装置には、ケーンング
内に、開閉可能に支持された一対の可り部材と、これら
の可動部材に支持された一対の測定子と、一対の可動部
材の開閉量を検出する検出器を備えている。A conventional inner diameter measuring device is disclosed in Japanese Patent Application Laid-open No. 61-57805. This inner diameter measuring device includes a pair of flexible members supported in a caning so as to be openable and closable, a pair of probes supported by these movable members, and a detector that detects the opening/closing amount of the pair of movable members. It is equipped with
この内径測定装置は、一対の測定子に被測定物に当接す
る測定部材を設け、それぞれの測定部材をマスターピー
スの内周面に当接させ、その時の可動部材の拡径位置を
検出器で検知してマスターｌ：′−ｘの内径の測定値を
基準値として記憶させ、この基準値を基に被測定物の内
径を測定することが出来る。This inner diameter measuring device has a pair of probes equipped with measuring members that come into contact with the object to be measured, each measuring member is brought into contact with the inner peripheral surface of the master piece, and a detector detects the expanded diameter position of the movable member at that time. Then, the measured value of the inner diameter of the master l:'-x is stored as a reference value, and the inner diameter of the object to be measured can be measured based on this reference value.
しかしながら、従来の内径測定装置では、測定子を被測
定物の測定孔に挿入する場合、内径測定装置と測定孔と
が同軸に保たれない虞がある。この状態で、内径測定装
置の測定子を測定孔に挿入し、測定子を測定孔に接触さ
せ測定すると測定誤差の原因となるという問題がある。However, in the conventional inner diameter measuring device, when inserting the probe into the measuring hole of the object to be measured, there is a possibility that the inner diameter measuring device and the measuring hole may not be kept coaxial. In this state, if the probe of the inner diameter measuring device is inserted into the measurement hole and brought into contact with the measurement hole to make a measurement, there is a problem that it will cause a measurement error.
本発明はこのような事情に鑑みてなされたもので、内径
測定装置と測定孔とを同軸線上に位置させ、高精度の測
定値を得ることが出来る内径測定装置を提供することを
目的とする。The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an inner diameter measuring device that can obtain highly accurate measured values by locating the inner diameter measuring device and the measurement hole on the same axis. .
本発明は、前記目的を達成するために、装置本体と、装
置本体内に基端部が揺動自在に支持され、被測定物の内
周面に当接可能゛な測定子と、測定子を互いに外側に拡
径するように付勢する弾性体と、測定子間の間隔を測定
する検出器と、測定子を弾性体の付勢力に抗して互いに
内側に縮径させる第１の作動部材と、円周上に等間隔に
配置され、被測定物の内周面に接触する少なくとも３本
の爪と、３本の爪を拡径又は縮径させる第２の作動部材
と、装置本体内で軸方向移動自在に配置され第１、第２
の作動部材を駆動させる駆動ロッドと、を有することを
特徴としている。In order to achieve the above object, the present invention includes an apparatus main body, a measuring element whose base end is swingably supported within the apparatus main body and which can come into contact with the inner circumferential surface of an object to be measured, and a measuring element. an elastic body that urges the probes to expand outward in diameter; a detector that measures the distance between the probes; and a first operation that causes the probes to contract inwardly against the biasing force of the elastic body. a member, at least three claws arranged at equal intervals on the circumference and in contact with the inner circumferential surface of the object to be measured, a second actuating member that expands or reduces the diameter of the three claws, and a main body of the device. The first and second
A drive rod for driving the actuating member of the drive rod.
本発明によれば、測定子の他に半径方向に移動する爪を
有している。爪を半径方向外側方向に移動させることに
より、被測定物と、内径測定装置の軸線とを同一線上に
配置することが出来る。従って高精度な測定値を得るこ
とが出来る。According to the present invention, in addition to the probe, there is provided a claw that moves in the radial direction. By moving the claws radially outward, the object to be measured and the axis of the inner diameter measuring device can be placed on the same line. Therefore, highly accurate measurement values can be obtained.
以下添付図面に従って本発明に係る内径測定装置の好ま
しい実施例を詳説する。Preferred embodiments of the inner diameter measuring device according to the present invention will be described in detail below with reference to the accompanying drawings.
第１図に示すように、本発明に係る内径測定装置１０は
、装置本体１２、フローティング部１４から構成されて
いる。As shown in FIG. 1, an inner diameter measuring device 10 according to the present invention is composed of a device main body 12 and a floating section 14.
装置本体１２は、ケーシング１５を有し、ケーシング１
５の壁面１５Δに、弾性部材１６．１６が、第２図に示
すように、ポル）１８．１８．１８．１８、を介して固
定されている。弾性部材１６．１６は支点１６Ａ、１６
Ａを中心に上下方向に揺動する。この弾性部？−４１６
には、一対のレバー２０．２０の基端部がボルト２２．
２２を介して連結されている。また、第１図に示すよう
に、レバー２０．２０間には、スプリング２４が圧縮状
態で配設され、レバー２０．２０を離す方向（半径方向
外側）に付勢している。更に、第１図、第３図に示すよ
うに、上側のレバー２０には、電気マイクロメータ２５
のボビン２６を固定し、下側のレバー２０にはコイル２
８を固定している。The device main body 12 has a casing 15, and the casing 1
As shown in FIG. 2, an elastic member 16.16 is fixed to the wall surface 15Δ of the wall 15A through a pole 18.18.18.18. The elastic members 16.16 are the fulcrums 16A, 16
It swings up and down with A as the center. This elastic part? -416
The proximal ends of the pair of levers 20.20 are attached to the bolts 22.
They are connected via 22. Further, as shown in FIG. 1, a spring 24 is disposed in a compressed state between the levers 20, 20, and biases the levers 20, 20 in the direction of separating them (radially outward). Furthermore, as shown in FIGS. 1 and 3, the upper lever 20 is equipped with an electric micrometer 25.
The bobbin 26 is fixed, and the coil 2 is attached to the lower lever 20.
8 is fixed.
これによりレバー２０．２０間の変位量を検出すること
が出来る。このレバー２０の先端部近傍にはテーパ面２
ＯＡが形成され、更に、先端部に、フランジ部２０Ｂが
形成されている。フランジ部２０Ｂには連結線３０を介
して測定子３２が連結されている。This allows the amount of displacement between the levers 20 and 20 to be detected. There is a tapered surface 2 near the tip of this lever 20.
An OA is formed, and a flange portion 20B is further formed at the tip. A measuring element 32 is connected to the flange portion 20B via a connecting line 30.
一方、第１図上でケーシング１５の左側にはシリンダ３
４が形成され、シリンダ３４は、第１のチューブ３６、
第２のチューブ３８を介して図示しない切換弁と、図示
しない空気供給源に連通されている。また、シリンダ３
４内にはピストン４０が指動自在に支持され、ピストン
４０にはロッド４２の左端部が連結されている。ロッド
４２の右端部には第４図に示すように、枠体４４が連結
されている。この枠体４４には、レバー４６がボルト４
８．４８を介して固定されている。レバー４６には、ロ
ーラ５０が回転自在に支持され、このローラ５０は、第
１図、第５図に示すように、前記レバー２０のテーパ面
２ＯＡに当接している。On the other hand, on the left side of the casing 15 in FIG.
4 is formed, the cylinder 34 is connected to a first tube 36,
The second tube 38 communicates with a switching valve (not shown) and an air supply source (not shown). Also, cylinder 3
A piston 40 is movably supported within the piston 4, and the left end of a rod 42 is connected to the piston 40. A frame 44 is connected to the right end of the rod 42, as shown in FIG. A lever 46 is attached to the bolt 4 on this frame 44.
Fixed via 8.48. A roller 50 is rotatably supported by the lever 46, and the roller 50 is in contact with the tapered surface 2OA of the lever 20, as shown in FIGS. 1 and 5.
これにより、ロッド４２が左右に移動すると、ローラ５
０．５０によりレバー２０．２０は拡径又は縮径する。As a result, when the rod 42 moves left and right, the roller 5
0.50 causes the lever 20.20 to expand or contract in diameter.
また、枠体４４には、ロッド５２が連結され、ロッド５
２の略中央部には、箪６図に示すテーパ駒５４が固着さ
れている。テーパ駒５４には、第６図、第７図に示すよ
うに、テーバ部５４Ａ、５４Ａ、５４Ａ、５４Ａが形成
され、このテーバ部５４Ａは、テーパ溝５６を介して移
動駒５８に嵌合されている。更に、移動駒５８には、第
６図に示すように、爪６０が固定されている。従って、
爪６０は、第７図、第８図に示すように、９０゜間隔で
配設されている。また、爪６０．６０．６０．６０は、
テーパ駒５４の軸線方向の移動と共に半径方向に拡径又
は縮径する。更に、第６図に示すように爪６０．６０．
６０．６０の爪先端部６０Ａ、６０Ａ、６０Ａ、６０Ａ
は、互いに平行に形成される。Further, a rod 52 is connected to the frame 44, and a rod 52 is connected to the frame 44.
A taper piece 54 shown in FIG. As shown in FIGS. 6 and 7, the tapered piece 54 is formed with tapered portions 54A, 54A, 54A, and 54A, and the tapered portion 54A is fitted into the movable piece 58 via the tapered groove 56. ing. Further, a claw 60 is fixed to the movable piece 58, as shown in FIG. Therefore,
The claws 60 are arranged at 90° intervals, as shown in FIGS. 7 and 8. Also, the claw 60.60.60.60 is
As the taper piece 54 moves in the axial direction, the diameter expands or contracts in the radial direction. Furthermore, as shown in FIG. 6, claws 60, 60.
60.60 claw tips 60A, 60A, 60A, 60A
are formed parallel to each other.
更に、第１図上で、前記シリンダ３４の左側にフローテ
ィング部１４が形成されている。フローティング部１４
は、第１図に示すように、固定部材６４を有している。Further, in FIG. 1, a floating portion 14 is formed on the left side of the cylinder 34. Floating part 14
has a fixing member 64, as shown in FIG.
この固定部材６４にはフランジ部６４Ａが形成され、フ
ランジ部６４Δには、第９図に示すように孔６４Ｂ、６
４Ｂ、６４Ｂ。This fixing member 64 is formed with a flange portion 64A, and the flange portion 64Δ has holes 64B and 64A as shown in FIG.
4B, 64B.
６４Ｂが形成されている。また、固定部材６４の開口部
６４Ｃには、移動部材６６がベアリング６８．６８・・
・を介して上下方向に移動自在に配設されている。更に
、固定部材６４の上側にはスプリング７０の上端部が係
止され、移動部材６６の下側にはスプリング７０の下端
部が係止されている。64B is formed. Further, in the opening 64C of the fixed member 64, the moving member 66 has bearings 68, 68...
・It is arranged so that it can move freely in the vertical direction. Furthermore, the upper end of a spring 70 is locked to the upper side of the fixed member 64, and the lower end of the spring 70 is locked to the lower side of the moving member 66.
従って、移動部材６６はスプリング７０で、上方に付勢
されている。この移動部材６６の開孔部６６Ａに、シリ
ンダ３４と一体の突出部６２が挿着されている。これに
より装置本体１２はベアリング６８．６８・・・を介し
て固定部材６４に対し、第１図上で微小距離移動自在と
なっている。Therefore, the moving member 66 is urged upward by the spring 70. A protrusion 62 integral with the cylinder 34 is inserted into the opening 66A of the moving member 66. As a result, the main body 12 of the apparatus can be moved by a small distance in FIG. 1 relative to the fixed member 64 via the bearings 68, 68, . . . .
前記の如く構成された本発明に係る内径測定装置につい
て説明する。The inner diameter measuring device according to the present invention configured as described above will be explained.
先ず、被測定物に挿入する為に、爪先端部６０゜Ａ、６
０Ａ、６０Ａ、６ ＤＡと、測定子３２．３２とを縮径
させる。即ち、図示しない切換弁を操作し、図示しない
空気供給源からチューブ３６を経てシリンダ３４内に空
気を供給し、ピストン４０を第１図上で右方向で移動さ
せると、Ｏ−）ド５２はロッド４２、枠体４４と共に右
方向に移動する。従って、テーパ駒５４が右方向に移動
し、テーパ駒５４の移動で移動駒５８は、半径方向内側
へ移動するので、爪６０も半径方向内側へ移動して縮径
する。First, in order to insert it into the object to be measured, the tip of the claw is 60°A, 6
Reduce the diameters of 0A, 60A, 6 DA and probes 32 and 32. That is, when a switching valve (not shown) is operated, air is supplied from an air supply source (not shown) into the cylinder 34 through the tube 36, and the piston 40 is moved in the right direction in FIG. The rod 42 and the frame 44 move to the right. Therefore, the taper piece 54 moves to the right, and the movement of the taper piece 54 causes the movable piece 58 to move radially inward, so that the pawl 60 also moves radially inward and reduces its diameter.
また、枠体４４が右方向へ移動するので、ローラ５０は
レバー４６を介してテーパ面２ＯＡに沿って、右方向に
移動する。従って、レバー２０はローラ５０に押圧され
て半径方向内側に移動するので、測定子３２は、連結棒
３０を介して半径方向内側に移動し、縮径する。この状
態で、マスターピースの内周面に測定子３２．３２と爪
先端部６０Ａ、６０Ａ、６０’Ａ、６０Ａとを挿入させ
る。Further, since the frame body 44 moves to the right, the roller 50 moves to the right via the lever 46 along the tapered surface 2OA. Therefore, the lever 20 is pressed by the roller 50 and moves radially inward, so the measuring element 32 moves radially inward via the connecting rod 30 and reduces its diameter. In this state, the measuring element 32, 32 and the claw tips 60A, 60A, 60'A, 60A are inserted into the inner peripheral surface of the master piece.
次に、マスタピースの孔８０Ａを測定する為に、爪先端
部６０Ａ、６０Ａ、６０Ａ、６０Ａと測定子３２．３２
とを拡径させる。即ち、チューブ３８を経て空気をシリ
ンダ３４内に供給し、ピストン４０を第１図上で左側に
移動させると、ローラ５０が、口７ド４２、枠体４４、
レバー４６を介してテーパ面２ＯＡに沿って、左方向に
移動するので、レバー２０．２０はスプリング２４．２
４の付勢力で半径方向外側に移動する。従って、連結棒
３０を介して測定子３２は半径方向外側に拡径し、マス
ターピースの内周面に当接する。・また、口、−ラ５０
の左方向への移動と共に、テーパ駒５４が左方向に移動
するので、移動駒５６と共に爪先端ｇＢ６０Ａが、半径
方向外側に移動して拡径し、マスターピースの内周面に
当接する。この場合、測定子３２．３２は、爪先端部６
０Ａ、６０Ａ。Next, in order to measure the hole 80A of the master piece, the claw tips 60A, 60A, 60A, 60A and the measuring tip 32.
and expand the diameter. That is, when air is supplied into the cylinder 34 through the tube 38 and the piston 40 is moved to the left in FIG.
Since the lever 20.20 moves to the left along the tapered surface 2OA via the lever 46, the lever 20.20 is moved by the spring 24.2.
It moves radially outward with a biasing force of 4. Therefore, the measuring element 32 expands in diameter outward in the radial direction via the connecting rod 30 and comes into contact with the inner peripheral surface of the master piece.・Also, mouth, -ra 50
As the taper piece 54 moves to the left, the claw tip gB60A moves radially outward together with the moving piece 56, expands in diameter, and comes into contact with the inner circumferential surface of the master piece. In this case, the contact point 32.32 has a claw tip 6.
0A, 60A.
６０Ａ、６０Δがマスターピースの内周面に当接する前
に、その内周面に当接しないように設定されている。こ
れにより、内径測定装置とマスターピースとを同一線上
にセットすると共に、測定子３２．３２を一定圧で内周
面に当接することができる。この状態で検出器２５でマ
スターピースの内径を測定し、基準値として記憶させる
。同様な操作で被測定物の内径を測定することにより、
測定値を求め、前記基準値と比較しワーク８０の内径を
順次測定することが出来る。60A and 60Δ are set so as not to contact the inner peripheral surface of the master piece before contacting the inner peripheral surface of the master piece. Thereby, the inner diameter measuring device and the master piece can be set on the same line, and the probes 32, 32 can be brought into contact with the inner circumferential surface with a constant pressure. In this state, the detector 25 measures the inner diameter of the master piece and stores it as a reference value. By measuring the inner diameter of the object to be measured using the same operation,
The inner diameter of the workpiece 80 can be sequentially measured by obtaining the measured value and comparing it with the reference value.
また、ワーク８０が軽量物の場合は、ワーク８０が移動
して内径測定装置の軸線と、ワーク８０の軸線とを一致
させるが、ワーク８０が重量物の場合は、爪先端部６０
Δがワーク８０の内周面に当接すると同時に、フローテ
ィング部１４の移動部材６６が移動し、内径測定装置の
軸線と、ワーク８０の軸線とを一致させることが出来る
。Further, when the work 80 is a light object, the work 80 is moved to align the axis of the inner diameter measuring device with the axis of the work 80, but when the work 80 is a heavy object, the claw tip 60
At the same time that Δ comes into contact with the inner circumferential surface of the workpiece 80, the moving member 66 of the floating portion 14 moves, making it possible to align the axis of the inner diameter measuring device with the axis of the workpiece 80.
更に、測定子３２．３２と爪先端部６０Ａ、６０Δ、６
０Ａ、６０Δとが、それぞれ拡径又は縮径出来るので、
一つの内径測定袋ばて広範囲の穴径寸法を測定すること
が出来る。従って、測定穴寸法が広範囲におよんでも、
内径測定装置１０を取り替える必要がない。Furthermore, the measuring head 32.32 and the claw tips 60A, 60Δ, 6
Since 0A and 60Δ can be expanded or contracted respectively,
One inner diameter measuring bag can measure a wide range of hole diameter dimensions. Therefore, even if the measurement hole size covers a wide range,
There is no need to replace the inner diameter measuring device 10.
以上説明したように、本発明に係る内径測定装置によれ
ば、先ず爪を被測定物の内周面に当接し、次に測定子を
被測定物の内周面に当接する被測定物と内径測定装置と
を同軸線上に保持することが出来る。As explained above, according to the inner diameter measuring device according to the present invention, first the claw is brought into contact with the inner peripheral surface of the object to be measured, and then the gauge head is brought into contact with the inner peripheral surface of the object to be measured. It is possible to hold the inner diameter measuring device on the same axis.
また、測定子と爪先端部とが、それぞれ拡径又は縮径出
来るので、広範囲の測定穴寸法を内径測定装置の取り替
えを行゛わずに測定することが出来、測定効果を向上さ
せることが出来る。In addition, since the diameter of the probe and the tip of the claw can be expanded or contracted, a wide range of measurement hole dimensions can be measured without replacing the inner diameter measuring device, improving measurement effectiveness. I can do it.
更に、フローティング部を有しているので、被測定物の
位置決めを正確に行わない場合でも、高精度の測定値を
得ることが出来る。Furthermore, since it has a floating portion, highly accurate measurement values can be obtained even when the object to be measured is not accurately positioned.
第１図は本発明に係る内径測定装置の断面図、第２図は
第１図のＡ−Ａ断面図、第３図は第１図のＢ−Ｂ断面図
、第４図は本発明に係る内径測定装置の要部断面図、第
５図は第１図のＣ−Ｃ断面図、第６図は本発明に係る内
径測定装置の要部断面図、第７図は第６図のＤ−Ｄ断面
図、第８図は第１図のＥ−Ｅ矢視図、第９図は第１図の
Ｆ−Ｆ矢視図である。
１０・・・内径測定装置、 １２・・・装置本体、
１４・・・フローティング部、 １５・・・ケーシ
ング、２０・・・レバー ２ＯＡ・・・テーパ面、
２４．７０・・・スプリング、 ２５・・・検出器、
３２・・・測定子、 ３４・・・シリンダ、
４０・・・ピストン、 ４２．５２・・・ロッド、
４４・・・枠体、 ５０・・・ローラ、 ５４・・・テ
ーバ駒、 ５４Ａ・・・テーバ部、５８・・・移動駒、
６０・・・爪、 ６０Ａ・・・爪先端部、６４・・・
固定部材、 ６６・・・移動部材。FIG. 1 is a sectional view of the inner diameter measuring device according to the present invention, FIG. 2 is a sectional view taken along line AA in FIG. 1, FIG. 3 is a sectional view taken along line BB in FIG. 5 is a cross-sectional view of the main part of the inner diameter measuring device according to the present invention, FIG. 5 is a cross-sectional view of the main part of the inner diameter measuring device according to the present invention, FIG. -D sectional view, FIG. 8 is a view taken along the line EE in FIG. 1, and FIG. 9 is a view taken along the line FF in FIG. 10...Inner diameter measuring device, 12...Device main body,
14...Floating part, 15...Casing, 20...Lever 2OA...Tapered surface,
24.70... Spring, 25... Detector,
32... Measuring head, 34... Cylinder,
40...Piston, 42.52...Rod,
44... Frame body, 50... Roller, 54... Taper piece, 54A... Taper part, 58... Moving piece,
60...Claw, 60A...Claw tip, 64...
fixed member, 66... movable member.
Claims (2)
内周面に当接可能な測定子と、 測定子を互いに外側に拡径するように付勢する弾性体と
、 測定子間の間隔を測定する検出器と、 測定子を弾性体の付勢力に抗して互いに内側に縮径させ
る第１の作動部材と、 円周上に等間隔に配置され、被測定物の内周面に接触す
る少なくとも３本の爪と、 ３本の爪を拡径又は縮径させる第２の作動部材と、 装置本体内で軸方向移動自在に配置され第１、第２の作
動部材を駆動させる駆動ロッドと、を有することを特徴
とする内径測定装置。(1) A device main body, a probe whose base end is swingably supported within the device main body and can come into contact with the inner circumferential surface of the object to be measured, and the probes are attached so that their diameters expand outward from each other. a detector for measuring the distance between the probes; a first actuating member that reduces the diameter of the probes inwardly against the biasing force of the elastic body; at least three claws arranged in contact with the inner circumferential surface of the object to be measured; a second actuating member for expanding or contracting the diameters of the three claws; 1. An inner diameter measuring device characterized by having a drive rod that drives a second actuating member.
装置本体の軸線に対して直交する方向に装置本体を移動
可能とすることを特徴とする請求項（１）記載の内径測
定装置。(2) floatingly supporting the device main body with an elastic body;
The inner diameter measuring device according to claim 1, wherein the device body is movable in a direction perpendicular to the axis of the device body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21610788A JPH0262902A (en) | 1988-08-30 | 1988-08-30 | Inside diameter measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21610788A JPH0262902A (en) | 1988-08-30 | 1988-08-30 | Inside diameter measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0262902A true JPH0262902A (en) | 1990-03-02 |
Family
ID=16683351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21610788A Pending JPH0262902A (en) | 1988-08-30 | 1988-08-30 | Inside diameter measuring device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0262902A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5219653A (en) * | 1990-11-27 | 1993-06-15 | Arakawa Chemical Industries, Ltd. | Sheet for assisting in nmr diagnosis |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5187071A (en) * | 1975-01-28 | 1976-07-30 | Tokyo Seimitsu Co Ltd | JIDONAIKEISOKUTEISOCHI |
| JPS6053801A (en) * | 1983-09-02 | 1985-03-27 | Tokyo Seimitsu Co Ltd | Device for measuring inner diameter |
| JPS63135801A (en) * | 1986-11-28 | 1988-06-08 | Toyota Motor Corp | Inner diameter measuring head |
-
1988
- 1988-08-30 JP JP21610788A patent/JPH0262902A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5187071A (en) * | 1975-01-28 | 1976-07-30 | Tokyo Seimitsu Co Ltd | JIDONAIKEISOKUTEISOCHI |
| JPS6053801A (en) * | 1983-09-02 | 1985-03-27 | Tokyo Seimitsu Co Ltd | Device for measuring inner diameter |
| JPS63135801A (en) * | 1986-11-28 | 1988-06-08 | Toyota Motor Corp | Inner diameter measuring head |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5219653A (en) * | 1990-11-27 | 1993-06-15 | Arakawa Chemical Industries, Ltd. | Sheet for assisting in nmr diagnosis |
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