JP2014035237A - Diameter measuring apparatus for tapered hole ends - Google Patents

Diameter measuring apparatus for tapered hole ends Download PDF

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JP2014035237A
JP2014035237A JP2012175805A JP2012175805A JP2014035237A JP 2014035237 A JP2014035237 A JP 2014035237A JP 2012175805 A JP2012175805 A JP 2012175805A JP 2012175805 A JP2012175805 A JP 2012175805A JP 2014035237 A JP2014035237 A JP 2014035237A
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diameter
tapered hole
taper
head
adapter
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Yuya Nakata
有哉 中田
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MARUKIYA SEISAKUSHO KK
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MARUKIYA SEISAKUSHO KK
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Abstract

PROBLEM TO BE SOLVED: To provide a diameter measuring apparatus for tapered hole ends that enables with a simple and inexpensive structure diameters of the tapered hole ends, including even a diameter of a virtual crossing between a side face and a flat part of a tapered hole, in an extremely short period of time.SOLUTION: A diameter measuring apparatus comprises: a cylinder 2; an adapter 3 that is fixed to one end of the cylinder, hollow inside and flat at the other end; a head 4 inserted into the adapter having at one end a taper 4b in contact with a tapered face of an examined object and at the other end a claw 4c engaged with the adapter and moving within the adapter; a tubular stem 5a fixed to the cylinder; a spindle 5b having a measuring element 5c inserted into the stem and keeping contact with the head in the cylinder and pressing the head with a spring pressure in a direction of forcing out the head out of the cylinder; and a dial gauge 5 that displays the extent of the measuring element motion by a difference from a reference value.

Description

本発明は、テーパー孔端部に形成される円の直径（内径）を簡易に検査することができるテーパー孔端部の直径測定装置に関する。   The present invention relates to a diameter measuring device for a tapered hole end that can easily inspect the diameter (inner diameter) of a circle formed at the tapered hole end.

従来から、３次元形状を測定する装置として、特許文献１、２などがある。特許文献１の三次元形状測定装置は、測定物の上面も側面も１０〜１００ナノメートルの超高精度で走査測定することができる。即ち、上面スタイラス１ａは、エアスライド１ｃによりＸＹ方向には振れずに測定物の上面を走査測定でき、第１のミラー１ｂとレンズ２ｄｅによりＺ座標も精度良く測定でき、側面スタイラス２ｉａは、ＸＹ方向にのみ変位可能でＺ方向には振れないので測定物の側面を走査測定でき、側面スタイラス２ｉａのＺ座標測定は前記第１のミラー１ｂのＺ座標測定値を利用して、より高精度に側面スタイラスのＸＹ変位を傾斜角度測定部２ｊで測定することができるというものである。   Conventionally, there are Patent Documents 1 and 2 as apparatuses for measuring a three-dimensional shape. The three-dimensional shape measuring apparatus of Patent Document 1 can perform scanning measurement with ultra-high accuracy of 10 to 100 nanometers on both the upper surface and the side surface of a measurement object. That is, the upper surface stylus 1a can scan and measure the upper surface of the measurement object without swinging in the XY direction by the air slide 1c, and can accurately measure the Z coordinate by the first mirror 1b and the lens 2de. Since it can be displaced only in the direction and cannot move in the Z direction, the side surface of the measurement object can be scanned and measured, and the Z coordinate measurement of the side stylus 2ia can be performed with higher accuracy using the Z coordinate measurement value of the first mirror 1b. The XY displacement of the side stylus can be measured by the tilt angle measuring unit 2j.

特許文献２の三次元形状測定装置は、光パルスの検出タイミングにかかわらず、奥行き方向の空間分解能及び測定精度を向上可能するため、色が規則的に経時変化する光パルスを生成するチャープ導入装置と、前記光パルスをワークに照射し切り出すことで該光パルスの反射光像を取得する反射光像取得部と、反射光像を分光し複数のカラーチャンネルでの各色情報を二次元位置毎に取得する色情報取得部とを備える。前記各色情報に対応する分光特性は、前記光パルスの波長範囲において少なくとも２つが交差するというものである。   The three-dimensional shape measuring apparatus of Patent Document 2 is a chirp introducing apparatus that generates a light pulse whose color regularly changes over time in order to improve the spatial resolution and measurement accuracy in the depth direction regardless of the detection timing of the light pulse. A reflected light image acquisition unit that acquires a reflected light image of the light pulse by irradiating the work with the light pulse and cutting out the reflected light image, and for each color information in a plurality of color channels for each two-dimensional position. A color information acquisition unit to acquire. The spectral characteristic corresponding to each color information is such that at least two intersect in the wavelength range of the optical pulse.

しかしながら、特許文献１、２では、初期投資が極めて高いこと、また検査時間も長く多数の検体を検査するには向かない。   However, in Patent Documents 1 and 2, the initial investment is extremely high, and the inspection time is long and is not suitable for testing a large number of specimens.

特開２０１２−７８３４４号公報JP 2012-78344 A 特開２０１２−１３７３９４号公報JP 2012-137394 A

そこで、本発明は、簡易な構造で低廉で、極めて短時間でテーパー孔端部の直径を測定することができるとともに、テーパー孔側面とテーパー孔端部平坦部の交点である仮想交点間の直径も測定することができるテーパー孔端部の直径測定装置を提供することを目的とするものである。   Therefore, the present invention has a simple structure, is inexpensive and can measure the diameter of the tapered hole end in an extremely short time, and also has a diameter between virtual intersections that are intersections of the tapered hole side surface and the tapered hole end flat part. It is an object of the present invention to provide a diameter measuring device for the end of a tapered hole that can also be measured.

本発明は、上記課題を解決するため、
（１）
筒体と、前記筒体の一端に固定され内部中空で他端が平坦なアダプターと、前記アダプター内に挿入され一端には被検査体のテーパー面に当接するテーパーが外周に形成され他端側には前記アダプターに係止するツメを備えるとともに前記アダプター内を移動するヘッドと、前記筒体に固定される管状のステムと、前記ステムに挿通し前記筒体内で前記ヘッドと接触する測定子を備えるとともに前記ヘッドを前記筒体から押し出す方向へバネ付勢で押圧するスピンドルと、前記測定子の移動度を基準値からの差で表示するダイヤルゲージと、からなることを特徴とするテーパー孔端部の直径測定装置の構成とした。
（２）
さらに、目的の直径が形成されているテーパー孔が穿設された校正用マスターを備え、前記ヘッドを前記テーパー孔に挿入して前記ダイヤルゲージの０点校正をすることを特徴とする（１）に記載のテーパー孔端部の直径測定装置の構成とした。
（３）
（２）のテーパー孔端部の直径測定装置を用いて、テーパー孔端部の円の直径を測定することを特徴とするテーパー孔端部の直径の測定方法の構成とした。
（４）
前記テーパー孔端部が、断面弧状で、テーパー孔のテーパーと端部平坦面との交点である仮想交点間の直径を求めることを特徴とする（３）に記載のテーパー孔端部の直径の測定方法の構成とした。 In order to solve the above problems, the present invention
(1)
A cylindrical body, an adapter that is fixed to one end of the cylindrical body and is hollow inside and flat at the other end, and a taper that is inserted into the adapter and that contacts the tapered surface of the object to be inspected is formed on the outer periphery. Includes a claw that engages with the adapter and moves within the adapter, a tubular stem that is fixed to the cylinder, and a probe that is inserted through the stem and contacts the head in the cylinder. A tapered hole end comprising: a spindle that presses the head in a direction to push the head out of the cylindrical body with a spring bias; and a dial gauge that displays the mobility of the probe as a difference from a reference value. Part diameter measuring device.
(2)
And a calibration master having a taper hole having a desired diameter formed therein, wherein the head is inserted into the taper hole and zero calibration of the dial gauge is performed (1) It was set as the structure of the diameter measuring apparatus of the taper hole edge part as described in above.
(3)
The diameter of the tapered hole end is measured by using the diameter measuring device for the tapered hole end in (2), and the diameter of the tapered hole is measured.
(4)
The diameter of the tapered hole end portion according to (3), wherein the tapered hole end portion is arc-shaped in cross section, and a diameter between virtual intersection points that are intersection points between the taper of the tapered hole and the end flat surface is obtained. The measurement method was configured.

本発明は、以上の構成であるため、低廉で、極めて簡易かつ短時間でテーパー孔端部の円の直径を測定できる。テーパー孔端部が断面弧状であっても、テーパー孔側面と端部平坦面との交点である仮想交点間の直径を測定することができる。   Since the present invention has the above-described configuration, the diameter of the circle at the end of the tapered hole can be measured at a low cost, extremely simply and in a short time. Even if the end portion of the tapered hole has an arc shape in cross section, the diameter between the virtual intersections that are the intersection points between the side surface of the tapered hole and the flat surface of the end portion can be measured.

本発明であるテーパー孔端部の直径測定装置の正面部分透視模式図である。It is a front partial perspective schematic diagram of the diameter measuring apparatus of the taper hole edge part which is the present invention. 校正用マスターの説明図である。（Ａ）が平面図、（Ｂ）が（Ａ）のＡ−Ａ線断面図である。It is explanatory drawing of the master for calibration. (A) is a top view, (B) is the sectional view on the AA line of (A). ダイヤルゲージの０点校正の説明図である。It is explanatory drawing of 0 point calibration of a dial gauge. 被検査体のテーパー孔端部の直径の測定状況（直径適正±０）を説明する図である。It is a figure explaining the measurement condition (diameter appropriateness +/- 0) of the diameter of the taper hole edge part of a to-be-inspected object. 被検査体のテーパー孔端部の直径の測定状況（直径小）を説明する図である。It is a figure explaining the measurement condition (diameter small) of the diameter of the taper hole edge part of a to-be-inspected object. 被検査体のテーパー孔端部の直径の測定状況（直径大）を説明する図である。It is a figure explaining the measurement condition (diameter large) of the diameter of the taper hole edge part of a to-be-inspected object. ダイヤルゲージ目盛りと直径との相関関係（換算）及び被検査体の適否を示す換算表である。It is a conversion table which shows the correlation (conversion) of a dial gauge scale and a diameter, and the suitability of a to-be-inspected object. 被検査体と継手の結合断面模式図である。It is a joint section schematic diagram of a to-be-inspected object and a joint. テーパー孔側面とテーパー孔端部平坦部との仮想交点の説明図である。It is explanatory drawing of the virtual intersection of a taper hole side surface and a taper hole edge part flat part.

以下、図面に基づき本発明について詳細に説明する。なお、本発明は実施例に限定されるものではない。   Hereinafter, the present invention will be described in detail with reference to the drawings. In addition, this invention is not limited to an Example.

図１に示すように、本発明であるテーパー孔端部の直径測定装置１は、筒体２と、アダプター３と、ヘッド４と、ダイヤルゲージ５とからなる。さらに、必要に応じて、図２に示す校正用マスター６を備え、図８、９に示すように、継手８とＯリング９で気密的に嵌合する被検査体７のテーパー孔７ｈの端部に形成される円の直径、或いは図９に示すような端部断面が弧状７ｇに湾曲した場合の仮想交点７ｆ間の直径（ここでは、直径φ＝１５．６が目標値である。）を求める装置である。   As shown in FIG. 1, the diameter measuring device 1 at the end of the tapered hole according to the present invention includes a cylindrical body 2, an adapter 3, a head 4, and a dial gauge 5. Further, if necessary, the end of the taper hole 7h of the object 7 to be inspected is fitted with the joint 8 and the O-ring 9 as shown in FIGS. The diameter of the circle formed in the part, or the diameter between the virtual intersections 7f when the end cross section as shown in FIG. 9 is curved into an arc 7g (here, the diameter φ = 15.6 is the target value). Is a device for obtaining

筒体２は、ダイヤルゲージ５のステム５ａ及び測定子５ｃを収納するとともに、ヘッド４を可動（図１上下）可能に収納するに貫通（図１上下）する貫通孔２ａが穿設されている。筒体２は、テーパー孔端部の直径測定時に測定者が把持する部分である。   The cylindrical body 2 accommodates the stem 5a and the measuring element 5c of the dial gauge 5, and is provided with a through hole 2a that penetrates (upward and downward in FIG. 1) to accommodate the head 4 so as to be movable (upward and downward in FIG. 1). . The cylindrical body 2 is a portion that is measured by the measurer when measuring the diameter of the end portion of the tapered hole.

なお、ステム５ａを収納する貫通孔２ａ部をステム５ａの略同長とし、さらにステム５ａの外径と略同径の内径とすることで、測定時及び経時的なステム５ａの固定位置の歪みが発生せず、精度よい前記直径の測定が可能になる。   The through hole 2a for accommodating the stem 5a has substantially the same length as the stem 5a, and further has an inner diameter that is substantially the same as the outer diameter of the stem 5a. Therefore, the diameter can be measured with high accuracy.

アダプター３は、内部が中空で、筒体２の一端にネジ３ｄなどで固定されるフランジ３ｂと、フランジ３ｂに連設する筒状のガイド３ａからなり、ガイド３ａの反フランジ３ｂ側は平坦面３ｃとなっており、テーパー孔６ａ、７ｈの平坦な平坦面３ｃ、端部７ｃに当接する。   The adapter 3 is hollow and includes a flange 3b fixed to one end of the cylindrical body 2 with a screw 3d and the like, and a cylindrical guide 3a connected to the flange 3b, and the opposite side of the guide 3a on the side opposite to the flange 3b is a flat surface. 3c, which contacts the flat flat surface 3c and the end 7c of the tapered holes 6a and 7h.

ヘッド４は、ガイド３ａ内に上下動可能（図１上下方向白抜き矢印）に挿入される軸部４ａと、軸部４ａの一端の外周に形成され校正用マスター６のテーパー６ｂ、被検査体のテーパー７ｄに当接するテーパー４ｂと、テーパー４ｂの他端側にアダプター３に筒体２内で係止するツメ４ｃとからなる。   The head 4 is inserted into the guide 3a so as to be movable up and down (the white arrow in FIG. 1), the taper 6b of the calibration master 6 formed on the outer periphery of one end of the shaft 4a, the object to be inspected A taper 4b that abuts against the taper 7d, and a claw 4c that is engaged with the adapter 3 in the cylindrical body 2 at the other end of the taper 4b.

後述のように、ヘッド４の上方向の移動度（図１白抜き上向き矢印）、即ちテーパー孔６ａ、７ｈの深さをテーパー孔端部の円の直径に換算する（図７）。ここでは、テーパー４ｂの傾きは、図１の上下方向（テーパー４ｂ部に記載の波線）に対して１５°の傾きのあるテーパー４ｂを例示した。   As will be described later, the upward mobility of the head 4 (the white upward arrow in FIG. 1), that is, the depth of the tapered holes 6a and 7h is converted into the diameter of the circle at the end of the tapered hole (FIG. 7). Here, the inclination of the taper 4b is exemplified by the taper 4b having an inclination of 15 ° with respect to the vertical direction in FIG. 1 (the wavy line described in the taper 4b portion).

ダイヤルゲージ５は、測定子５ｃを備えたスピンドル５ｂの上下の動きを、ラック及びピニオンなどの歯車５ｋを利用して、拡大回転運動に変換して、測定子５ｃの上下移動度を指針する比較測定器であり、別の基準物と比較してその変位量から測定値や差を求めるものである。例えば、株式会社ミツトヨなどの各種ダイヤルゲージ（http://www.mitutoyo.co.jp/products/dialgauge/dialgauge.html）が市場に流通している。   The dial gauge 5 uses a gear 5k such as a rack and a pinion to convert the vertical movement of the spindle 5b provided with the measuring element 5c into an enlarged rotational movement, and compares the vertical movement of the measuring element 5c. It is a measuring instrument, and is used to obtain measured values and differences from the amount of displacement compared with another reference object. For example, various dial gauges such as Mitutoyo Corporation (http://www.mitutoyo.co.jp/products/dialgauge/dialgauge.html) are distributed in the market.

ダイヤルゲージ５は、図１に示すように、例えば、内部に歯車５ｋなどのギヤシステムを収納するケース（図１裏面図示省略）と、前記ケース前面を覆い側面に回転可能に取り付けられた外枠５ｄと、外枠５ｄとともに回転する目盛り盤５ｅと、外枠５ｄを前記ケースに位置固定するストッパ５ｍと、前記ケースに固定されるとともに筒体２内に挿入され固定される管状のステム５ａと、スピンドル５ｂと、測定子５ｃと、前記ケースに取り付けられスピンドル５ｂの他端を収納するキャップ５ｌと、スピンドル５ｂの上下動に伴って回転（図１中点線弧状両矢印）する歯車５ｋの回転によって比例回転する長針５ｈ及び短針５ｉと、目盛り単位幅などが表記され前記ケースに固定された文字盤５ｆと、からなり、測定子５ｃの移動度（図１上向き白抜き矢印）を長針５ｈ、短針５ｉの回転表示に変換する装置である。   As shown in FIG. 1, the dial gauge 5 includes, for example, a case (not shown in the back of FIG. 1) that houses a gear system such as a gear 5k, and an outer frame that covers the front of the case and is rotatably attached to a side surface. 5d, a scale plate 5e that rotates together with the outer frame 5d, a stopper 5m that fixes the position of the outer frame 5d to the case, and a tubular stem 5a that is fixed to the case and inserted into the cylinder 2 and fixed. The spindle 5b, the measuring element 5c, the cap 5l attached to the case and housing the other end of the spindle 5b, and the rotation of the gear 5k that rotates with the vertical movement of the spindle 5b (dotted arc double arrow in FIG. 1). 1 and a dial 5f, which has a scale unit width and the like, and is fixed to the case. The mobility of the probe 5c (FIG. 1) Orientation outline arrow) a long needle 5h, a device for converting the rotation display of the hour hand 5i.

スピンドル５ｂは、ステム５ａに挿通し、筒体２内でヘッド４の後端４ｄと接触する測定子５ｃを先端に備え、ヘッド４を筒体２から押し出す方向へバネ付勢で押圧するとともに、前記ケースを貫通しヘッド４の上下動（図１中の点線両矢印）に伴って上下動し、歯車５ｋに上下動を伝達し、長針５ｈ及び短針５ｉを回転させる。長針５ｈが１回転することで、短針５ｉは所定目盛り回転する。   The spindle 5b is inserted into the stem 5a, and is provided with a measuring element 5c that contacts the rear end 4d of the head 4 in the cylinder 2 at the tip, and presses the head 4 in a direction of pushing the head 4 from the cylinder 2 with a spring bias, Through the case, it moves up and down as the head 4 moves up and down (dotted arrow in FIG. 1), transmits the up and down movement to the gear 5k, and rotates the long hand 5h and the short hand 5i. By rotating the long hand 5h once, the short hand 5i rotates by a predetermined scale.

測定子５ｃ（スピンドル５ｂ）の上下方向の移動度を回転運動へ変換するには、例えばスピンドル５ｂにラック（歯）が形成され、歯車５ｋがピニオンとなり、ラック・アンド・ピニオン機構で、測定子５ｃの移動度を複数の歯車で拡大させ、長針５ｈ、短針５ｉを回転させる。   In order to convert the vertical mobility of the measuring element 5c (spindle 5b) into a rotational motion, for example, a rack (tooth) is formed on the spindle 5b, the gear 5k becomes a pinion, and the measuring element is measured by a rack-and-pinion mechanism. The mobility of 5c is expanded with a plurality of gears, and the long hand 5h and the short hand 5i are rotated.

ダイヤルゲージ５を筒体２に固定するには、ステム５ａにクランプなどの固定具２ｂをネジ２ｃなど固定した上で、固定具２ｂをネジ２ｄなどで筒体２に固定するなどの方法がある。   In order to fix the dial gauge 5 to the cylinder 2, there is a method of fixing the fixture 2 b such as a clamp to the stem 5 a and fixing the fixture 2 b to the cylinder 2 with the screw 2 d and the like. .

長針５ｈ、短針５ｉには、それぞれ専用の目盛り盤５ｅ、５ｎがある。被検査体７のテーパー孔７ｈの基準深さ（＝テーパー孔７ｈの端部の円の直径）のときの長針５ｈの位置に外枠５ｄを回転させ、目盛り盤５ｅの０を合わせる。外枠５ｄの回転にともなって、目盛り盤５ｅも回転する。   The long hands 5h and the short hands 5i have dedicated scale plates 5e and 5n, respectively. The outer frame 5d is rotated to the position of the long hand 5h when the reference depth of the tapered hole 7h of the object 7 to be inspected (= the diameter of the circle at the end of the tapered hole 7h), and the scale plate 5e is set to zero. As the outer frame 5d rotates, the scale plate 5e also rotates.

長針５ｈの０位置が目的のテーパー孔端部の直径で、実施例１の場合、長針５ｈが０より左方向で停止すれば、スピンドル５ｂの上方向への移動度が基準より少ないことからテーパー孔端部の円の直径が目的の直径より大きいことを意味する。長針５ｈが０より右方向で停止すれば、スピンドル５ｂの上方向への移動度が基準より大きいことからテーパー孔端部の円の直径が目的の直径より小さいことを意味する。   The 0 position of the long needle 5h is the diameter of the target tapered hole end. In the case of Example 1, if the long hand 5h stops in the left direction from 0, the upward mobility of the spindle 5b is less than the reference, and the taper is reduced. It means that the diameter of the hole end circle is larger than the target diameter. If the long hand 5h stops in the right direction from 0, the upward mobility of the spindle 5b is larger than the reference, which means that the diameter of the circle at the end of the tapered hole is smaller than the target diameter.

ここでは、目的の直径（φ）を１５．６５ｍｍとして、目盛り盤５ｅの０位置とした。そして、許容範囲は、１５．６０ｍｍ（目盛り盤５ｅの数字９０）以上１５．７ｍｍ（目盛り盤５ｅの数値１０）より小さい直径とした。即ち、目盛り盤５ｅのグレー着色部分は規格外であることを意味する。図１では、長針が−０．０３を示しており、そのときのテーパー孔端部の円の仮想直径は、図７に示すように１５．６３４ｍｍとなる。   Here, the target diameter (φ) was 15.65 mm, and the 0 position of the scale plate 5e was set. The allowable range is a diameter smaller than 15.60 mm (number 90 of the scale plate 5e) and 15.7 mm (number 10 of the scale plate 5e). That is, it means that the gray colored portion of the scale 5e is out of specification. In FIG. 1, the long hand indicates −0.03, and the virtual diameter of the circle at the end of the tapered hole at that time is 15.634 mm as shown in FIG.

校正用マスター６は、図２に示すように、図２下方に向かって細くなる断面（Ｂ）逆円錐台のテーパー孔６ａを備える。ここでは、図２（Ｂ）上下方向の波線から１５°の傾きで細くなるテーパー孔６ａとした。テーパー孔６ａの内側面がテーパー６ｂである。平坦面６ｃは、アダプター３のガイド３ａ下端の平坦面３ｃと当接する。   As shown in FIG. 2, the calibration master 6 includes a tapered hole 6a having a cross-section (B) inverted truncated cone that narrows downward in FIG. Here, the tapered hole 6a is narrowed at an inclination of 15 ° from the vertical wavy line in FIG. 2B. The inner surface of the taper hole 6a is a taper 6b. The flat surface 6 c comes into contact with the flat surface 3 c at the lower end of the guide 3 a of the adapter 3.

テーパー孔６ａの端部の直径は、１５．６５０ｍｍとした。傾き１５°は、ヘッド４のテーパー４ｂ及び被検査体７のテーパー孔７ｈのテーパー７ｄと同じ傾きで、被検査体７のテーパー７ｄの基準となり、被検査体７のテーパー端部の円の直径の基準となる。   The diameter of the end of the taper hole 6a was 15.650 mm. The inclination 15 ° is the same inclination as the taper 4b of the head 4 and the taper 7d of the taper hole 7h of the object 7 to be inspected, and serves as a reference for the taper 7d of the object 7 to be inspected. It becomes the standard.

次に、図３を参照して、基準位置校正（０点校正）方法について説明する。先ず、ヘッド４のテーパー４ｂ及び校正用マスター６のテーパー６ｂを生地できれいに拭き取る。   Next, a reference position calibration (0 point calibration) method will be described with reference to FIG. First, the taper 4b of the head 4 and the taper 6b of the calibration master 6 are wiped clean with a cloth.

ヘッド４は、ガイド内を上下動できるとともに、図３（Ａ）に下向き矢印で示すように、アダプター３の外に突出するように押圧されている。そして、ヘッド４を校正用マスター６のテーパー孔６ａに嵌め、アダプター３の平坦面３ｃを校正用マスター６の上面の平坦面６ｃに当接させる。ヘッド４は、ツメ４ｃがアダプター３に係止され、アダプター３から脱落しない。   The head 4 can move up and down in the guide and is pressed so as to protrude out of the adapter 3 as indicated by a downward arrow in FIG. Then, the head 4 is fitted into the tapered hole 6 a of the calibration master 6, and the flat surface 3 c of the adapter 3 is brought into contact with the flat surface 6 c on the upper surface of the calibration master 6. In the head 4, the claw 4 c is locked to the adapter 3 and does not fall off from the adapter 3.

ヘッド４は、押圧力でテーパー孔６ａに挿入され、ヘッド４のテーパー４ｂが校正用マスター６のテーパー６ｂに当接する。そのときの長針５ｈの位置に目盛り盤５ｅの０を合わせるように、外枠５ｄを回転させる。そして、ストッパ５ｍで外枠５ｄを前記ケースに固定する。このときのヘッド４の進入位置（深度）が被検査体７のテーパー孔７ｈ端部の円の直径（φ１５．６５０ｍｍ）と１対１で相関する。   The head 4 is inserted into the taper hole 6 a by pressing force, and the taper 4 b of the head 4 abuts on the taper 6 b of the calibration master 6. The outer frame 5d is rotated so that the zero of the scale plate 5e is aligned with the position of the long hand 5h at that time. Then, the outer frame 5d is fixed to the case with the stopper 5m. The approach position (depth) of the head 4 at this time has a one-to-one correlation with the diameter of the circle (φ15.650 mm) at the end of the tapered hole 7h of the inspection object 7.

次に、被検査体７の検査方法について説明する。ここに示す被検査体７は、図８に示すように、継手８と気密的に螺合する。   Next, an inspection method for the inspection object 7 will be described. The object to be inspected 7 shown here is airtightly engaged with the joint 8 as shown in FIG.

図８に示すように、被検査体７は、内部に流路７ａが貫通する管で、流路７ａの一端部内側に継手８と螺合するネジ山７ｂが形成される。また被検査体７の端部には底が平坦な端部７ｃが形成され、継手８と嵌合する。流路７ａと端部７ｃは連通し、接続部にテーパー７ｄ及び切り欠き７ｅが形成される。テーパー７ｄ部にテーパー孔７ｈが形成される。   As shown in FIG. 8, the inspected object 7 is a tube through which the flow path 7a penetrates, and a thread 7b that is screwed into the joint 8 is formed inside one end of the flow path 7a. Further, an end 7 c having a flat bottom is formed at the end of the object 7 to be inspected, and is fitted to the joint 8. The flow path 7a and the end 7c communicate with each other, and a taper 7d and a notch 7e are formed at the connection part. A tapered hole 7h is formed in the tapered portion 7d.

被検査体７を成形するには、先ず、流路７ａにネジ山７ｂを切り込んだ後に、テーパー孔７ｈを穿設する。従って、テーパー孔７ｈのみを穿設すると、テーパー孔の穿設端部にバリが発生するため、テーパー孔とともに切り欠き７ｅも穿孔する。これにより、テーパー７ｄにバリがなく、継手８との螺合時に気密性を阻害しなくなる。   In order to mold the object 7 to be inspected, first, a thread 7b is cut into the flow path 7a, and then a tapered hole 7h is formed. Accordingly, when only the tapered hole 7h is drilled, burrs are generated at the drilling end of the tapered hole, so that the notch 7e is also drilled together with the tapered hole. Thereby, there is no burr | flash in the taper 7d, and it does not inhibit airtightness at the time of screwing with the joint 8.

ここで、継手８は、図７（Ａ）に示すように、内部に流路８ａが貫通する管で、一端外周部には被検査体７のネジ山７ｂと螺合するネジ部８ｂが設けられる。ネジ部８ｂの端部の平坦面８ｃの位置に、Ｏリング９が嵌められる。   Here, as shown in FIG. 7A, the joint 8 is a tube through which the flow path 8a penetrates, and a threaded portion 8b that is screwed with the thread 7b of the object to be inspected 7 is provided on the outer periphery of one end. It is done. An O-ring 9 is fitted at the position of the flat surface 8c at the end of the screw portion 8b.

被検査体７と継手８が気密的に嵌合することで、液体の流路７ａ、８ａが連通する。それらが螺合状態のとき、Ｏリング９がテーパー７ｄに位置して、螺合で圧縮変形することで、被検査体７と継手８を気密的にシールする（図７（Ｂ））。   Since the device under test 7 and the joint 8 are fitted in an airtight manner, the liquid flow paths 7a and 8a communicate with each other. When they are in a screwed state, the O-ring 9 is positioned at the taper 7d and is compressed and deformed by screwing to hermetically seal the device under test 7 and the joint 8 (FIG. 7B).

液体としては、高圧のオイルなどが例示できる。Ｏリング９が気密的に被検査体７と継手８をシールするためには、この場合１５°のテーパー７ｄが極めて重要である。   Examples of the liquid include high-pressure oil. In order for the O-ring 9 to hermetically seal the object 7 to be inspected and the joint 8, a 15 ° taper 7 d is extremely important in this case.

図９に示すように、被検査体７のテーパー孔７ｈの端部７ｃは、テーパー７ｄと接続するものの、接続部は、弧状７ｇになっている。このように弧状７ｇのテーパー孔７ｈ端部７ｃの円の直径は、簡単には測定できない。なお、他の図において、弧状７ｇは湾曲することなく、簡易的に角状で示している。   As shown in FIG. 9, although the end 7c of the tapered hole 7h of the device under test 7 is connected to the taper 7d, the connecting portion has an arc shape 7g. Thus, the diameter of the circle of the arcuate 7g tapered hole 7h end 7c cannot be measured easily. In other drawings, the arc 7g is simply shown as a square without being curved.

弧状７ｄの端部７ｃと、テーパー７ｄとの延設交点が、仮想交点７ｆで、検査されるテーパー孔７ｈ端部の円の直径である。   The extending intersection of the end 7c of the arc 7d and the taper 7d is the virtual intersection 7f, which is the diameter of the circle at the end of the tapered hole 7h to be inspected.

図４〜図６に、テーパー孔端部の円の直径を測定している状況を示した。図４には、検査した被検査体７のテーパー孔７ｈの直径が、目的の直径である場合を示した。ヘッド４の先端部が目標深度（図中左向き矢印）にあるので、テーパー孔端部の円の直径も目標直径である。   4 to 6 show a situation in which the diameter of the circle at the end of the tapered hole is being measured. FIG. 4 shows a case where the diameter of the tapered hole 7h of the inspected object 7 is a target diameter. Since the tip of the head 4 is at the target depth (left arrow in the figure), the diameter of the circle at the end of the tapered hole is also the target diameter.

即ち、ヘッド４の後端４ｄの押し上げ位置は校正用マスター６で校正したときと同じ位置（目標位置±０）で、このとき図１の長針５ｈは、目盛り盤５ｅの０を指針する。そして、テーパー孔端部の直径は、図７に示すように、１５．６５０ｍｍとなる。   That is, the push-up position of the rear end 4d of the head 4 is the same position (target position ± 0) as that when calibrated by the calibration master 6, and at this time, the long hand 5h in FIG. 1 points to 0 on the scale plate 5e. And the diameter of a taper hole edge part will be 15.650 mm, as shown in FIG.

図５には、検査した被検査体７のテーパー孔７ｈの直径が、目的の直径より小さい場合を示した。ヘッド４の先端部が目標深度より−αだけ上に位置するので、テーパー孔端部の円の直径は目標直径より小さい。   FIG. 5 shows a case where the diameter of the tapered hole 7h of the inspected object 7 is smaller than the target diameter. Since the tip portion of the head 4 is located at −α above the target depth, the diameter of the circle at the end of the tapered hole is smaller than the target diameter.

即ち、ヘッド４の後端４ｄの押し上げ位置は校正用マスター６で校正したときより上に位置（目標位置−α）し、このとき図１の長針５ｈは、目盛り盤５ｅの０より−側を指針する。そして、テーパー孔端部の直径は、図７に示すように、１５．６５０ｍｍより小さい。   In other words, the push-up position of the rear end 4d of the head 4 is positioned higher than when calibrated by the calibration master 6 (target position -α). At this time, the long hand 5h in FIG. To guide. And the diameter of a taper hole edge part is smaller than 15.650 mm, as shown in FIG.

図６には、検査した被検査体７のテーパー孔７ｈの直径が、目的の直径より大きい場合を示した。ヘッド４の先端部が目標深度より＋βだけ上に位置するので、テーパー孔端部の円の直径は目標直径より大きい。   FIG. 6 shows a case where the diameter of the tapered hole 7h of the inspected object 7 is larger than the target diameter. Since the tip portion of the head 4 is located above the target depth by + β, the diameter of the circle at the end of the tapered hole is larger than the target diameter.

即ち、ヘッド４の後端４ｄの押し上げ位置は校正用マスター６で校正したときより下に位置（目標位置＋β）し、このとき図１の長針５ｈは、目盛り盤５ｅの０より＋側を指針する。そして、テーパー孔端部の直径は、図７に示すように、１５．６５０ｍｍより大きい。   In other words, the push-up position of the rear end 4d of the head 4 is positioned below (target position + β) than when it is calibrated by the calibration master 6. At this time, the long hand 5h in FIG. 1 points the + side from 0 on the scale 5e. To do. And the diameter of a taper hole edge part is larger than 15.650 mm, as shown in FIG.

図７に示すように、本実施例では、基準直径値（長針５ｈの０）を１５．６５０ｍｍとし、１５．６０ｍｍ＜φ仮想値ｍｍ＜１５．７０ｍｍを規格内としている。図１の目盛り盤５ｅの非グレー部に長針５ｈが位置する場合である。   As shown in FIG. 7, in this embodiment, the reference diameter value (0 of the long hand 5h) is 15.650 mm, and 15.60 mm <φ virtual value mm <15.70 mm is within the standard. This is a case where the long hand 5h is located in the non-gray portion of the scale plate 5e in FIG.

本実施例では、テーパー孔７ｈのテーパー７ｄの傾斜角を１５°とした被検査体７の場合を示したが、勿論テーパー孔のテーパーの傾斜角、仮想直径、ダイヤルゲージ５の目盛り盤５ｅの０点等、校正用マスター６は、検査対象物のテーパー孔形状により、適宜変更できるものである。   In the present embodiment, the case of the inspection object 7 in which the inclination angle of the taper 7d of the taper hole 7h is 15 ° is shown. Of course, the inclination angle of the taper of the taper hole, the virtual diameter, the dial 5 The calibration master 6 such as 0 point can be appropriately changed depending on the tapered hole shape of the inspection object.

１ テーパー孔端部の直径測定装置
２ 筒体
２ａ 貫通孔
２ｂ 固定具
２ｃ ネジ
３ アダプター
３ａ ガイド
３ｂ フランジ
３ｃ 平坦面
３ｄ ネジ
４ ヘッド
４ａ 軸部
４ｂ テーパー
４ｃ ツメ
４ｄ 後端
５ ダイヤルゲージ
５ａ ステム
５ｂ スピンドル
５ｃ 測定子
５ｄ 外枠
５ｅ 目盛り盤
５ｆ 文字盤
５ｈ 長針
５ｉ 短針
５ｋ 歯車
５ｌ キャップ
５ｍ ストッパ
５ｎ 目盛り盤
６ 校正用マスター
６ａ テーパー孔
６ｂ テーパー
６ｃ 平坦面
７ 被検査体
７ａ 流路
７ｂ ネジ山
７ｃ 端部
７ｄ テーパー
７ｅ 切り欠き
７ｆ 仮想交点
７ｇ 弧状
７ｈ テーパー孔
８ 継手
８ａ 流路
８ｂ ネジ部
８ｃ 平坦面
９ Ｏリング DESCRIPTION OF SYMBOLS 1 Diameter measuring apparatus 2 of taper hole 2 Cylindrical body 2a Through-hole 2b Fixing tool 2c Screw 3 Adapter 3a Guide 3b Flange 3c Flat surface 3d Screw 4 Head 4a Shaft part 4b Taper 4c Claw 4d Rear end
5 Dial gauge 5a Stem
5b Spindle 5c Measuring element 5d Outer frame 5e Scale 5f Dial 5h Long hand 5i Short hand 5k Gear 5l Cap 5m Stopper 5n Scale 6 Calibration master 6a Taper hole 6b Taper 6c Flat surface
7 Inspected object 7a Channel 7b Thread 7c End 7d Taper 7e Notch 7f Virtual intersection 7g Arc 7h Taper hole 8 Joint 8a Channel 8b Threaded portion 8c Flat surface 9 O-ring

Claims (4)

筒体と、前記筒体の一端に固定され内部中空で他端が平坦なアダプターと、前記アダプター内に挿入され一端には被検査体のテーパー面に当接するテーパーが外周に形成され他端側には前記アダプターに係止するツメを備えるとともに前記アダプター内を移動するヘッドと、前記筒体に固定される管状のステムと、前記ステムに挿通し前記筒体内で前記ヘッドと接触する測定子を備えるとともに前記ヘッドを前記筒体から押し出す方向へバネ付勢で押圧するスピンドルと、前記測定子の移動度を基準値からの差で表示するダイヤルゲージと、からなることを特徴とするテーパー孔端部の直径測定装置。 A cylindrical body, an adapter that is fixed to one end of the cylindrical body and is hollow inside and flat at the other end, and a taper that is inserted into the adapter and that contacts the tapered surface of the object to be inspected is formed on the outer periphery. Includes a claw that engages with the adapter and moves within the adapter, a tubular stem that is fixed to the cylinder, and a probe that is inserted through the stem and contacts the head in the cylinder. A tapered hole end comprising: a spindle that presses the head in a direction to push the head out of the cylindrical body with a spring bias; and a dial gauge that displays the mobility of the probe as a difference from a reference value. Part diameter measuring device. さらに、目的の直径が形成されているテーパー孔が穿設された校正用マスターを備え、前記ヘッドを前記テーパー孔に挿入して前記ダイヤルゲージの０点校正をすることを特徴とする請求項１に記載のテーパー孔端部の直径測定装置。 2. A calibration master having a taper hole having a target diameter formed therein, wherein the head is inserted into the taper hole to perform zero-point calibration of the dial gauge. The diameter measuring apparatus of the taper hole edge part as described in 2. 請求項２のテーパー孔端部の直径測定装置を用いて、テーパー孔端部の円の直径を測定することを特徴とするテーパー孔端部の直径の測定方法。 3. A method for measuring a diameter of a tapered hole end, wherein the diameter of a circle at the tapered hole end is measured using the diameter measuring device for a tapered hole end according to claim 2. 前記テーパー孔端部が、断面弧状で、テーパー孔のテーパーと端部平坦面との交点である仮想交点間の直径を求めることを特徴とする請求項３に記載のテーパー孔端部の直径の測定方法。 4. The diameter of the tapered hole end portion according to claim 3, wherein the diameter of the tapered hole end portion according to claim 3, wherein the tapered hole end portion is arc-shaped in cross section, and a diameter between virtual intersection points that are intersection points between the taper of the tapered hole and the end flat surface is obtained. Measuring method.
JP2012175805A 2012-08-08 2012-08-08 Diameter measuring apparatus for tapered hole ends Pending JP2014035237A (en)

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JP2015203601A (en) * 2014-04-11 2015-11-16 トヨタ車体株式会社 position measurement jig
CN105115404A (en) * 2015-08-28 2015-12-02 航天精工股份有限公司 Countersunk angle measurement method
KR20160015477A (en) * 2014-07-30 2016-02-15 현대자동차주식회사 Small sealing gauge
CN106352771A (en) * 2016-09-28 2017-01-25 哈尔滨建成集团有限公司 Oval inner diameter measuring device
CN106907979A (en) * 2017-03-31 2017-06-30 长春市美科汽车零部件有限公司 taper hole diameter measuring tool
CN109202540A (en) * 2018-10-16 2019-01-15 中国航发南方工业有限公司 Shaft-like workpiece outer conical surface processing method
JP2020101414A (en) * 2018-12-20 2020-07-02 株式会社Ｓｕｂａｒｕ Hole part shape measurement inspection instrument, hole part shape measurement device and hole part shape measurement method
CN117516312A (en) * 2024-01-08 2024-02-06 成都乘风阀门有限责任公司 Vernier caliper for online measurement of cock conical surface and measuring method

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015203601A (en) * 2014-04-11 2015-11-16 トヨタ車体株式会社 position measurement jig
US9599446B2 (en) 2014-07-30 2017-03-21 Hyundai Motor Company Small sealing gauge
KR20160015477A (en) * 2014-07-30 2016-02-15 현대자동차주식회사 Small sealing gauge
KR101693924B1 (en) * 2014-07-30 2017-01-09 현대자동차주식회사 Small sealing gauge
CN104713458A (en) * 2015-04-01 2015-06-17 航天精工股份有限公司 Countersunk head angle gauge for counterbore and measurement method of countersunk head angle gauge
CN105115404A (en) * 2015-08-28 2015-12-02 航天精工股份有限公司 Countersunk angle measurement method
CN106352771A (en) * 2016-09-28 2017-01-25 哈尔滨建成集团有限公司 Oval inner diameter measuring device
CN106352771B (en) * 2016-09-28 2019-03-08 哈尔滨建成集团有限公司 A kind of oval inner diameter measuring device
CN106907979A (en) * 2017-03-31 2017-06-30 长春市美科汽车零部件有限公司 taper hole diameter measuring tool
CN109202540A (en) * 2018-10-16 2019-01-15 中国航发南方工业有限公司 Shaft-like workpiece outer conical surface processing method
JP2020101414A (en) * 2018-12-20 2020-07-02 株式会社Ｓｕｂａｒｕ Hole part shape measurement inspection instrument, hole part shape measurement device and hole part shape measurement method
JP7235496B2 (en) 2018-12-20 2023-03-08 株式会社Subaru HOLE SHAPE MEASURING AND CHECKING DEVICE, HOLE SHAPE MEASURING DEVICE, AND HOLE SHAPE MEASURING METHOD
CN117516312A (en) * 2024-01-08 2024-02-06 成都乘风阀门有限责任公司 Vernier caliper for online measurement of cock conical surface and measuring method
CN117516312B (en) * 2024-01-08 2024-04-09 成都乘风阀门有限责任公司 Vernier caliper for online measurement of cock conical surface and measuring method

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