JP3742991B2 - Concentricity measuring gauge - Google Patents

Concentricity measuring gauge Download PDF

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JP3742991B2
JP3742991B2 JP2003332985A JP2003332985A JP3742991B2 JP 3742991 B2 JP3742991 B2 JP 3742991B2 JP 2003332985 A JP2003332985 A JP 2003332985A JP 2003332985 A JP2003332985 A JP 2003332985A JP 3742991 B2 JP3742991 B2 JP 3742991B2
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hole
holder
probe
gauge
concentricity
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JP2005098837A (en
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彰良 吉田
浩二 福井
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京都精密工業株式会社
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Description

この発明は、被測定物の穴位置を正確に測定する同芯度測定ゲージの構造に関する。   The present invention relates to the structure of a concentricity measuring gauge that accurately measures the hole position of an object to be measured.

従来の被測定物の穴位置を測定する同芯度測定ゲージは、図２に示すように、測定ロッド
33の探触子35と反対側に、直角方向からダイヤルゲージ31の測定子を付勢接触させるための面を形成した構造である。 As shown in FIG. 2, the conventional concentricity measuring gauge for measuring the hole position of the object to be measured is a measuring rod.
In this structure, a surface for urging and contacting the probe of the dial gauge 31 from a right angle direction is formed on the opposite side of the 33 probe 35.

しかしながら、以上の技術によれば、測定ロッド33の探触子35を被測定物の測定対象穴に付勢接触させつつ回転させることは、軸受け34を介して測定ロッド33を保持する回転ホルダー36を回転させることになり、ダイヤルホルダー32を介して回転ホルダー36に固定されたダイヤルゲージ31も回転するため、ダイヤルゲージ31の目盛りを読む時、視点がずれ正確な読み取りが困難であり、また測定者のストレスにもなる。
そこでこの発明は、同芯度測定中にダイヤルゲージは固定され、視点がずれず正確な読み取りが可能な同芯度測定ゲージを、従来方法と比較して測定精度レベルを維持向上させるため、簡素な構造で提供することを課題とする。 However, according to the above-described technique, rotating the probe 35 of the measurement rod 33 while being in urging contact with the measurement target hole of the object to be measured is the rotation holder 36 that holds the measurement rod 33 via the bearing 34. The dial gauge 31 fixed to the rotary holder 36 via the dial holder 32 also rotates, so when reading the scale of the dial gauge 31, the viewpoint is misaligned and accurate reading is difficult, and measurement is also possible. It becomes the stress of the person.
Therefore, the present invention provides a concentricity measuring gauge in which the dial gauge is fixed during the concentricity measurement and can be read accurately without shifting the viewpoint. The problem is to provide a simple structure.

以上の課題を解決するために、本発明は、計測治具等に設置される基準ブシュ9と、該基準ブシュ9の軸芯回りに回転可能な回転ホルダー7とを備え、該回転ホルダー7に保持された測定ロッド5の探触子10を被測定物の測定対象穴に付勢接触させつつ360°以上回転させて、基準ブシュ9の穴と被測定物の穴との同芯度を測定する同芯度測定ゲージにおいて、測定ロッド5の長手方向中央部に軸受け6を有する揺動機構と、測定ロッド5の探触子10と反対の端面に形成された斜面に接触するスライドピン4を有するスライド機構とにより、測定ロッド5の探触子10の動きをダイヤルゲージ1のスピンドル軸心方向へ変換する構造とし、基準ブシュ9の穴に固定ブシュ8が嵌入され、該固定ブシュ8の穴に前記回転ホルダー7が嵌入され、固定ブシュ8にダイヤルゲージ1が固定されると共に、スライドピン4が、回転ホルダー7に仕上った穴に回転止め11を有して上下方向のみ自在に嵌入した構造を特徴とする同芯度測定ゲージである。   In order to solve the above problems, the present invention includes a reference bush 9 installed in a measurement jig or the like, and a rotation holder 7 that can rotate around the axis of the reference bush 9. Measure the concentricity between the hole of the reference bush 9 and the hole of the object to be measured by rotating the probe 10 of the measurement rod 5 held by 360 ° or more while urging the probe 10 to the object to be measured. In the concentricity measuring gauge, a rocking mechanism having a bearing 6 in the center in the longitudinal direction of the measuring rod 5 and a slide pin 4 that contacts a slope formed on the end surface of the measuring rod 5 opposite to the probe 10 are provided. The movement of the probe 10 of the measuring rod 5 is converted into the spindle axis direction of the dial gauge 1 by a slide mechanism having a fixed bushing 8 fitted into the hole of the reference bushing 9, and the hole of the fixing bushing 8 The rotating holder 7 is inserted in the dial gauge 1 Is fixed, the slide pin 4, a concentricity measuring gauge, wherein a rotation stopper 11 in the finished rotary holder 7 holes were fitted freely only vertically structure.

本発明によれば、同芯度測定中にダイヤルゲージは回転することなく固定されて
目盛りを読む時視点がずれない構造を、測定ロッド5の揺動機構と、斜面による接触子の変位の方向変換と、スライドピン4の回転ホルダーへの嵌入配置と回転止めにより、探触子の変位をダイヤルゲージに伝達するという簡素な構造で実現する。
また、スライドピンの回転ホルダーへの嵌入配置と回転止めの構造をとることにより、スライドピン軸芯と基準ブシュ軸芯の同芯精度が測定精度に影響することが無いため、精度基準（マスターゲージ）による精度確認無しでも常に正確な同芯度測定ゲージを得られる。
また、探触子の付勢接触の付勢力は、ダイヤルゲージの付勢力を活用可能であり、
新たにバネ等の機構を設ける必要が無く、簡素な構造である。 According to the present invention, the dial gauge is fixed without rotating during concentricity measurement so that the viewpoint does not deviate when reading the scale, and the swing mechanism of the measuring rod 5 and the direction of displacement of the contact by the inclined surface It is realized by a simple structure that transmits the displacement of the probe to the dial gauge by conversion, the placement of the slide pin 4 in the rotary holder and the rotation stop.
In addition, since the slide pin shaft core and the reference bushing shaft core do not affect the measurement accuracy by fitting the slide pin into the rotating holder and adopting a rotation stopper structure, the accuracy standard (master gauge ) Accurate concentricity measurement gauge can always be obtained without checking accuracy.
In addition, the biasing force of the dial gauge can be used as the biasing force of the probe's biasing contact.
There is no need to newly provide a mechanism such as a spring, and the structure is simple.

この発明の一実施形態を、図1に示す。
ダイヤルゲージ1は、ダイヤルホルダー2とダイヤル固定台3を介して固定ブシュ8に固定されている。ダイヤルホルダー2は、穴内径がテーパブシュ構造（図示しない）になっていて、ダイヤルゲージ1のステム部を偏圧無くクランプするため、ステムの変形によるダイヤルゲージの動作不良を発生しにくい。ダイヤルホルダー2は、ダイヤル固定台3にねじ込み固定されている。ダイヤル固定台3は、固定ブシュ8にねじ止め固定されていて動かない。 One embodiment of the present invention is shown in FIG.
The dial gauge 1 is fixed to a fixing bush 8 via a dial holder 2 and a dial fixing base 3. The dial holder 2 has a taper bush structure (not shown) in the inner diameter of the hole, and clamps the stem portion of the dial gauge 1 without uneven pressure. Therefore, it is difficult for the dial gauge to malfunction due to deformation of the stem. The dial holder 2 is screwed and fixed to the dial fixing base 3. The dial fixing base 3 is fixed to the fixing bushing 8 with screws and does not move.

固定ブシュ8は、内外径の同芯度が精度良く形成され、外径仕上げ部が精度良く基準ブシュ9の内径仕上げ部（穴）に嵌合し、ゲージが使用状態にある時、固定ブシュ8の内径仕上げ部と、基準ブシュ9の軸心との同芯度が精度良く実現されている。また、回転ホルダー7が、上下スラスト方向に動かないよう固定ブシュ8に保持されている。測定作業を実施中は、基準ブシュ9の内径に固定ブシュ8が人手で挿入固定されている。基準ブシュ9は、測定治具等の基準穴部に挿入されていて、内外径の同芯度が精度良く実現され、被測定対象物の穴位置測定をする時の基準となる。   The fixed bushing 8 has a concentricity with inner and outer diameters accurately formed, and the outer diameter finished part fits into the inner diameter finished part (hole) of the reference bushing 9 with precision, and when the gauge is in use, the fixed bushing 8 The concentricity between the inner diameter finished portion of the inner sleeve and the axis of the reference bush 9 is realized with high accuracy. The rotary holder 7 is held by a fixed bush 8 so as not to move in the vertical thrust direction. During the measurement operation, the fixed bush 8 is manually inserted and fixed to the inner diameter of the reference bush 9. The reference bush 9 is inserted into a reference hole portion of a measuring jig or the like, and the concentricity of the inner and outer diameters is accurately realized, and becomes a reference when measuring the hole position of the object to be measured.

回転ホルダー7は、外径仕上げ部が固定ブシュ8の内径仕上げ部（穴）に精度良く嵌合し、回転ホルダー7が固定ブシュ8に対して回転する時、その回転中心は、精度良く基準ブシュ9の軸心に一致する。効率良く手回し可能なように、該当部にローレット加工等の滑り止めを施す。また、回転ホルダー7は、正確に仕上がった縦穴を上端部に有し、縦穴にスライドピン4が滑らかにスライド可能に挿入されている。そして、回転ホルダー7は、長手下側の計算された正しい位置に、ボールベアリング等の軸受け部品を挿入固定する横穴を有し、この穴を軸心として、軸受け6が形成され、測定ロッド5が精度良くシーソー（揺動）運動をする。   The rotating holder 7 has an outer diameter finish portion that fits into an inner diameter finishing portion (hole) of the fixed bushing 8 accurately, and when the rotating holder 7 rotates with respect to the fixed bushing 8, the center of rotation of the rotating holder 7 has a high accuracy. Matches the 9 axis. Anti-slip such as knurling is applied to the corresponding part so that it can be turned efficiently. Further, the rotary holder 7 has a precisely finished vertical hole at the upper end portion, and the slide pin 4 is inserted into the vertical hole so as to be smoothly slidable. The rotary holder 7 has a horizontal hole for inserting and fixing a bearing component such as a ball bearing at the calculated correct position on the lower side in the longitudinal direction, the bearing 6 is formed around this hole as an axis, and the measuring rod 5 is Performs seesaw (oscillation) motion with high accuracy.

スライドピン4は、その下端部に、正確に仕上がった超硬球を形成した測定子を固定させ、その超硬球が測定ロッド5の45°斜面に付勢接触している。一方スライドピン4は、前記回転ホルダー7に正確に仕上がった縦穴を滑らかにスライドする。従って測定ロッドの45°斜面の左右の動きは、正確に上下の動きに変換され、スライドピン4が上下することになる。そのスライドピン4の精度良く仕上がった上端面の動きを、ダイヤルゲージ1のスピンドル先端の測定子により検出し、目盛り板に表示する。この精度良く仕上がった上端面は、回転方向に自由なため、スピンドル先端の測定子に回転トルクがかかることは無い。スライドピン4は、回転ホルダー7に対し回転止め11を有すことにより、超硬球と斜面の接点位置を変化させないことにより、測定精度を向上させる。   The slide pin 4 is fixed at its lower end with a measuring element formed with precisely finished super hard balls, and the super hard balls are in urging contact with the 45 ° slope of the measuring rod 5. On the other hand, the slide pin 4 smoothly slides in the vertical hole precisely finished on the rotary holder 7. Accordingly, the left / right movement of the 45 ° slope of the measuring rod is accurately converted into a vertical movement, and the slide pin 4 moves up and down. The movement of the top surface of the slide pin 4 finished with high accuracy is detected by a probe at the tip of the spindle of the dial gauge 1 and displayed on the scale plate. Since the upper end surface finished with high accuracy is free in the rotation direction, no rotational torque is applied to the probe at the tip of the spindle. The slide pin 4 has a rotation stopper 11 with respect to the rotation holder 7, thereby improving the measurement accuracy by not changing the contact position between the superhard ball and the inclined surface.

測定ロッド5は、その一方の端近辺に超硬球のロー付け等を施した探触子10を有し、この探触子10が、被測定物の穴に付勢接触し、穴の位置変化を計測する。探触子10の長手反対端は、正確に45°に形成され、焼き入れ研削で面の硬さの向上と面粗さの向上を計っている。また、探触子10である超硬球の中心と、スライドピン4の測定子の超硬球と45°斜面の接点とを結んだ線上の真半分の位置に、軸受け6の軸が挿入結合される横穴を有する。軸受け6は、その軸部が前記測定ロッド5の横穴に挿入され、ネジ等によりしっかり固定されている。軸部の両端にはボールベアリング等の軽く正確に回る軸受け部品が穴で固定され、軸受け部品の外径部は前記の回転ホルダー7の横穴に固定されている。その結果、回転ホルダー7が回転すると、測定ロッド5は、軸受け6を回転中心とするシーソー（揺動）運動の方向に自由度をもって、回転ホルダー7に同期して回転する。   The measuring rod 5 has a probe 10 with a hard ball brazed or the like near one end thereof, and this probe 10 is in urging contact with the hole of the object to be measured, and the position of the hole changes. Measure. The longitudinally opposite end of the probe 10 is accurately formed at 45 °, and the hardness of the surface and the surface roughness are improved by quench grinding. In addition, the shaft of the bearing 6 is inserted and coupled at a half position on the line connecting the center of the superhard ball, which is the probe 10, and the superhard ball of the probe of the slide pin 4 and the contact point of the 45 ° slope. Has a horizontal hole. The shaft portion of the bearing 6 is inserted into the horizontal hole of the measuring rod 5 and is firmly fixed by screws or the like. Bearing parts such as ball bearings that rotate lightly and accurately are fixed by holes at both ends of the shaft part, and the outer diameter part of the bearing part is fixed in the lateral hole of the rotary holder 7. As a result, when the rotating holder 7 rotates, the measuring rod 5 rotates in synchronization with the rotating holder 7 with a degree of freedom in the direction of the seesaw (swinging) movement around the bearing 6.

この発明の一実施形態を示す同芯度測定ゲージの一部断面平面図である。It is a partial cross section top view of the concentricity measuring gauge which shows one Embodiment of this invention. 従来技術を示す同芯度測定ゲージの一部断面平面図である。It is a partial cross section top view of the concentricity measuring gauge which shows a prior art.

符号の説明Explanation of symbols

１ ダイヤルゲージ
２ ダイヤルホルダー
３ ダイヤル固定台
４ スライドピン
５ 測定ロッド
６ 軸受け
７ 回転ホルダー
８ 固定ブシュ
９ 基準ブシュ
１０ 探触子
１１ 回転止め
３１ ダイヤルゲージ
３２ ダイヤルホルダー
３３ 測定ロッド
３４ 軸受け
３５ 探触子
３６ 回転ホルダー DESCRIPTION OF SYMBOLS 1 Dial gauge 2 Dial holder 3 Dial fixing stand 4 Slide pin 5 Measuring rod 6 Bearing 7 Rotating holder 8 Fixed bush 9 Reference bush 10 Probe 11 Rotation stop 31 Dial gauge 32 Dial holder 33 Measuring rod 34 Bearing 35 Probe 36 Rotating holder

Claims (1)

計測治具等に設置される基準ブシュ9と、該基準ブシュ9の軸芯回りに回転可能な回転ホルダー7とを備え、該回転ホルダー7に保持された測定ロッド5の探触子10を被測定物の測定対象穴に付勢接触させつつ360°以上回転させて、基準ブシュ9の穴と被測定物の穴との同芯度を測定する同芯度測定ゲージにおいて、測定ロッド5の長手方向中央部に軸受け6を有する揺動機構と、測定ロッド5の探触子10と反対の端面に形成された斜面に接触するスライドピン4を有するスライド機構とにより、測定ロッド5の探触子10の動きをダイヤルゲージ1のスピンドル軸心方向へ変換する構造とし、基準ブシュ9の穴に固定ブシュ8が嵌入され、該固定ブシュ8の穴に前記回転ホルダー7が嵌入され、固定ブシュ8にダイヤルゲージ1が固定されると共に、スライドピン4が、回転ホルダー7に仕上った穴に回転止め11を有して上下方向のみ自在に嵌入した構造を特徴とする同芯度測定ゲージ。 A reference bush 9 installed in a measurement jig or the like, and a rotation holder 7 that can rotate around the axis of the reference bush 9, and a probe 10 of the measurement rod 5 held by the rotation holder 7 are covered. In a concentricity measurement gauge that measures the concentricity of the hole of the reference bushing 9 and the hole of the object to be measured by rotating it 360 ° or more while being in urging contact with the measurement object hole of the measurement object, the length of the measuring rod 5 is The probe of the measuring rod 5 by the swing mechanism having the bearing 6 in the center in the direction and the slide mechanism having the slide pin 4 that contacts the inclined surface formed on the end surface opposite to the probe 10 of the measuring rod 5 The movement of 10 is converted to the spindle axis direction of the dial gauge 1, the fixed bushing 8 is inserted into the hole of the reference bushing 9, and the rotating holder 7 is inserted into the hole of the fixing bushing 8, The dial gauge 1 is fixed and the slide pin 4 The concentricity measuring gauge, wherein the vertical only freely fitted structure into a hole finished to the holder 7 has a detent 11.
JP2003332985A 2003-09-25 2003-09-25 Concentricity measuring gauge Expired - Fee Related JP3742991B2 (en)

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CN101886908A (en) * 2010-05-07 2010-11-17 许晓华 Screw rod concentricity detection device and detection method
CN101886908B (en) * 2010-05-07 2012-05-30 许晓华 Screw rod concentricity detection device
CN103542833A (en) * 2013-10-30 2014-01-29 沈阳航天新乐有限责任公司 Hole inclination measuring mechanism and inclined hole measuring method
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