JPH0843075A - Portable roundness measuring instrument - Google Patents
Portable roundness measuring instrumentInfo
- Publication number
- JPH0843075A JPH0843075A JP19602194A JP19602194A JPH0843075A JP H0843075 A JPH0843075 A JP H0843075A JP 19602194 A JP19602194 A JP 19602194A JP 19602194 A JP19602194 A JP 19602194A JP H0843075 A JPH0843075 A JP H0843075A
- Authority
- JP
- Japan
- Prior art keywords
- main shaft
- bearing
- spindle
- detector
- measuring device
- 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.)
- Granted
Links
Landscapes
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、別の取付治具によって
被測定物等に取り付け、シリンダの真円度や円柱形状を
測定する可搬式真円度測定器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable roundness measuring instrument for measuring a roundness or a cylindrical shape of a cylinder, which is attached to an object to be measured by another mounting jig.
【０００２】[0002]
【従来の技術】一般的な真円度円柱形状測定機はコラム
に測定手段が取り付けられ、被測定物（以下、「ワー
ク」という）をベースに設けられた回転テーブルに載置
し測定手段の検出器を上下動して、または、ワークをベ
ースに載置し測定手段の検出器を回転及び上下動して、
ワークの真円度や円柱形状を測定するが、大形のワーク
の場合は、回転テーブルやベースに載置することが困難
であること等から可搬式真円度測定器が用いられる。可
搬式真円度測定器は、その自体に自立手段がなく、別の
取付治具によって支持されて使用される。2. Description of the Related Art In a general roundness cylindrical shape measuring machine, a measuring means is attached to a column, and an object to be measured (hereinafter referred to as "workpiece") is placed on a rotary table provided on the base of the measuring means. By moving the detector up and down, or by placing the work on the base and rotating and moving the detector of the measuring means up and down,
The roundness and cylindrical shape of a work are measured, but in the case of a large work, a portable roundness measuring instrument is used because it is difficult to place it on a rotary table or a base. The portable roundness measuring device has no self-supporting means by itself, and is used by being supported by another mounting jig.
【０００３】このような可搬式真円度測定器の例が、
「特公平２−５４４８２号（中空シリンダ内面測定装
置）」の中に開示されており、その内容は概略次のよう
になっている。以下、説明する部品名のうち「特公平２
−５４４８２号」の中で説明されている部品については
その名称を（）内に記載する。すなわち、測定器本体
（ハウジング）、測定器本体に回転自在に支持された主
軸（測定アーム）、主軸に沿って軸方向移動自在なスラ
イドヘッド（測定スライド）、スライドヘッドに取り付
けられた検出器（測定ヘッド）、主軸に回転自在に設け
られた送りネジ、スライドヘッドに固着された送りナッ
ト、送りネジを回転駆動するモータ（第２駆動装置）、
主軸を回転駆動するモータ（第１駆動装置）等から構成
されている。また、検出器は主軸の半径方向に変位検出
機能を有しており、検出センサとしては歪ゲージが用い
られている。さらに、検出器から主軸の軸方向に引き出
されたケーブルは、主軸に設けられた案内ローラを介し
て測定器本体の外周方向に曲げられ、測定器本体に設け
られた２個の案内ローラで再び主軸の軸方向に案内され
た後、再度測定器本体の外周方向に曲げられて測定器本
体の外周に回転自在に支持されたリングに巻き掛けられ
るとともに、引っ張りバネによってリングの外周方向に
引っ張られた案内ローラに巻き掛けられＵターンして固
定端に接続されている。引っ張りバネ自体も測定器本体
の外周方向に巻き掛けられ後、主軸の軸方向に案内され
ている。An example of such a portable roundness measuring instrument is
It is disclosed in "Japanese Patent Publication No. 2-54482 (measuring device for inner surface of hollow cylinder)", and its contents are roughly as follows. Among the parts names described below,
The names of the parts described in “-54482” are described in parentheses. That is, a measuring device main body (housing), a main shaft (measuring arm) rotatably supported by the measuring device main body, a slide head (measuring slide) axially movable along the main shaft, and a detector attached to the slide head ( Measurement head), a feed screw rotatably provided on the main shaft, a feed nut fixed to the slide head, a motor (second drive device) for rotationally driving the feed screw,
It is composed of a motor (first drive device) and the like for rotating the main shaft. Further, the detector has a displacement detection function in the radial direction of the main shaft, and a strain gauge is used as a detection sensor. Further, the cable pulled out from the detector in the axial direction of the main shaft is bent in the outer peripheral direction of the measuring instrument main body via the guide roller provided on the main spindle, and is again re-guided by the two guide rollers provided on the measuring instrument main body. After being guided in the axial direction of the main shaft, it is bent again in the outer peripheral direction of the measuring instrument body and wrapped around a ring rotatably supported on the outer periphery of the measuring instrument body, and is pulled in the outer peripheral direction of the ring by a tension spring. It is wound around the guide roller and makes a U-turn and is connected to the fixed end. The tension spring itself is also wound around the outer circumference of the measuring instrument body and then guided in the axial direction of the main shaft.
【０００４】これによって、検出器がワーク（例えばシ
リンダブロック）のシリンダ内を回転及び軸方向移動し
て、ワークのシリンダ各断面の形状を検出し、得られた
測定データから真円度や円柱形状が算出される。この場
合、検出器が回転及び軸方向移動すると接続ケーブルは
Ｕターンした部分がリングの外周上を移動することによ
って、検出器から固定端までの長さの変動を吸収する。
なお、この可搬式真円度測定器は別の取付治具によって
ワークに固定されて使用されている。As a result, the detector rotates and axially moves in the cylinder of the work (for example, a cylinder block) to detect the shape of each cross section of the cylinder of the work, and based on the obtained measurement data, the roundness and the cylindrical shape. Is calculated. In this case, when the detector rotates and moves in the axial direction, the U-turned portion of the connecting cable moves on the outer circumference of the ring to absorb the variation in the length from the detector to the fixed end.
This portable roundness measuring device is used by being fixed to a work by another mounting jig.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、「特公
平２−５４４８２号」に開示された可搬式真円度測定器
では、主軸を回転自在に支持する軸受が玉軸受であり、
玉軸受は内輪・ボール・外輪の３部品で構成されている
ため回転精度を上げること難しいとともに、玉軸受の内
輪と主軸との嵌合度合いによっても主軸の回転精度が影
響されるので、主軸の回転精度を向上させることが困難
であるという問題がある。真円度測定器は検出器の回転
精度がそのまま真円度測定精度に現れるため、非常に重
要である。また、検出器から固定端までの接続ケーブル
の案内が前述した方法であるため、接続ケーブルの移動
量は測定器本体の外周に回転自在に支持されたリングの
外周長程度しかとれず、検出器の回転量及び軸方向移動
量が大きくとれないという問題がある。これによって測
定範囲が制限される。However, in the portable roundness measuring instrument disclosed in Japanese Patent Publication No. 2-54482, the bearing that rotatably supports the main shaft is a ball bearing,
Since the ball bearing is made up of three parts, the inner ring, the ball, and the outer ring, it is difficult to improve the rotation accuracy, and the degree of fitting of the inner ring of the ball bearing and the spindle also affects the rotation accuracy of the spindle. There is a problem that it is difficult to improve the rotation accuracy. The roundness measuring device is very important because the rotation accuracy of the detector directly appears in the roundness measuring accuracy. Also, since the guide of the connection cable from the detector to the fixed end is the method described above, the movement amount of the connection cable can be about the outer peripheral length of the ring rotatably supported on the outer periphery of the measuring device main body. There is a problem that the rotation amount and the axial movement amount cannot be set large. This limits the measuring range.
【０００６】本発明はこのような事情を鑑みてなされた
もので、主軸の回転精度を上げることが容易であるとと
もに、検出器の回転量及び軸方向移動量を大きくとるこ
とができ、真円度測定精度が高く測定範囲が広い可搬式
真円度測定器を提供することを目的とする。The present invention has been made in view of such circumstances, and it is easy to improve the rotation accuracy of the main shaft, and the rotation amount and the axial movement amount of the detector can be made large, which results in a perfect circle. It is an object of the present invention to provide a portable roundness measuring instrument having a high degree of accuracy in measuring a degree and a wide measuring range.
【０００７】[0007]
【課題を解決するための手段】本発明は前記目的を達成
するために、測定器本体１１と、測定器本体１１に回転
自在に支持された主軸２１と、主軸２１に沿って主軸２
１の軸方向（以下、単に「軸方向」という）に移動自在
なスライドヘッド３１と、スライドヘッド３１に取り付
けられ主軸２１の半径方向（以下、単に「半径方向」と
いう）に変位検出機能を有する検出器４０と、主軸２１
の回転及びスライドヘッド３１の移動を駆動する駆動手
段５０及び６０と、検出器４０と外部出力部とを接続す
るケーブル７１の案内をする配線手段７０と、から構成
された可搬式真円度測定器において、測定器本体１１に
設けられ、主軸２１を回転自在に支持する軸受を、
（イ）軸方向２箇所に設けられ、主軸２１の半径方向を
支持する滑り軸受のラジアル軸受と、測定器本体１１の
上端に設けられ、主軸２１の軸方向を支持する滑り軸受
のスラスト軸受１６と、から構成し、（ロ）ラジアル軸
受を、円周角約１２０度間隔で３箇所に分割構成し、３
箇所中２箇所が固定軸受１２で１箇所が半径方向に付勢
された予圧軸受１３とするとともに、固定軸受１２の主
軸２１との接触面は主軸２１の形状（円）とほぼ同一形
状に形成した。In order to achieve the above object, the present invention provides a measuring device main body 11, a main shaft 21 rotatably supported by the measuring device main body 11, and a main shaft 2 along the main shaft 21.
The slide head 31 is movable in one axial direction (hereinafter, simply referred to as “axial direction”), and has a displacement detection function in the radial direction of the main shaft 21 attached to the slide head 31 (hereinafter, simply referred to as “radial direction”). Detector 40 and spindle 21
Portable roundness measurement comprising drive means 50 and 60 for driving rotation of the head and movement of the slide head 31, and wiring means 70 for guiding a cable 71 connecting the detector 40 and an external output section. In the measuring instrument, a bearing provided on the measuring instrument main body 11 and rotatably supporting the main shaft 21 is
(A) A radial bearing of a slide bearing which is provided at two locations in the axial direction and supports the radial direction of the main shaft 21, and a thrust bearing 16 of a slide bearing which is provided at the upper end of the measuring device body 11 and supports the axial direction of the main shaft 21. And (b) the radial bearing is divided into three parts at intervals of a circumferential angle of about 120 degrees.
Two of the locations are fixed bearings 12, and one location is a preloaded bearing 13 that is biased in the radial direction, and the contact surface of the fixed bearing 12 with the main shaft 21 is formed to have substantially the same shape as the main shaft 21 (circle). did.
【０００８】また、配線手段７０は、ケーブル７１の軸
方向案内を主軸２１に内蔵された軸方向伸縮自在なスパ
イラルチューブ７２によって行い、ケーブル７１の回転
側と外部出力部の固定側との接続をスリップリングによ
って行うようにした。The wiring means 70 guides the cable 71 in the axial direction by means of an axially expandable / contractible spiral tube 72 incorporated in the main shaft 21 to connect the rotating side of the cable 71 and the fixed side of the external output section. The slip ring was used.
【０００９】[0009]
【作用】本発明によれば、可搬式真円度測定器は軸方向
を上下方向にして用いられ、主軸２１は、半径方向が予
圧軸受け１３により２箇所の固定軸受１２に押圧されて
支持され、軸方向がスラスト軸受１６で支持される。ま
た、検出器４０から出たケーブル７１の軸方向案内はス
パイラルチューブ７２によって行われ、ケーブル７１の
回転側と外部出力部の固定側とはスリップリング機構に
よって接続される。According to the present invention, the portable roundness measuring device is used with the axial direction being the vertical direction, and the main shaft 21 is supported by being pressed in the radial direction by the preload bearings 13 at the two fixed bearings 12. The axial direction is supported by the thrust bearing 16. The spiral tube 72 guides the cable 71 from the detector 40 in the axial direction, and the rotation side of the cable 71 and the fixed side of the external output unit are connected by a slip ring mechanism.
【００１０】[0010]
【実施例】図１及び図２に本発明に係る可搬式真円度測
定器（以下、単に「測定器」ともいう）の実施例の全体
図を示す。図１は側面図、図２は図１のＡ矢視図であ
る。図１に示すように、測定器は、大きく分けて本体部
１０、主軸部２０、スライドヘッド部３０、検出器４
０、主軸回転駆動手段５０、スライドヘッド移動駆動手
段６０、及び図１には符号を付していないが配線手段７
０から構成されていてる。また、図３は図２のＢ−Ｂ断
面で、軸方向の一部を省略して示しているとともに、説
明のために一部はＢ−Ｂ断面と別の断面を表示してい
る。図４は図３のＣ−Ｃ断面、図５は図３のＤ−Ｄ断
面、図６は図３のＥ−Ｅ断面、図７は図３のＦ−Ｆ断
面、図８は図３のスリップリング部分の拡大図である。1 and 2 show an overall view of an embodiment of a portable roundness measuring instrument (hereinafter, also simply referred to as "measuring instrument") according to the present invention. 1 is a side view, and FIG. 2 is a view taken in the direction of arrow A in FIG. As shown in FIG. 1, the measuring device is roughly divided into a main body part 10, a main shaft part 20, a slide head part 30, and a detector 4.
0, the spindle rotation driving means 50, the slide head movement driving means 60, and the wiring means 7 although not shown in FIG.
It consists of zero. Further, FIG. 3 is a cross-sectional view taken along the line BB of FIG. 2, omitting a part in the axial direction, and for the sake of explanation, a part of the cross-section is different from the BB cross-section. 4 is a cross section taken along the line CC of FIG. 3, FIG. 5 is a cross section taken along the line DD of FIG. 3, FIG. 6 is a cross section taken along the line EE of FIG. 3, FIG. 7 is a cross section taken along the line FF of FIG. It is an enlarged view of a slip ring portion.
【００１１】本体部１０は図３及び図４に示すように、
測定器の支持体である測定器本体１１の軸方向２箇所
に、主軸２１の半径方向を支持するラジアル軸受が設け
られている。ラジアル軸受は、円周角約１２０度間隔で
３箇所に分割構成され、３箇所中２箇所が固定軸受１２
で、１箇所が半径方向に圧縮バネ１４で半径方向に付勢
された予圧軸受１３である。また、固定軸受１２及び予
圧軸受１３は摺動材料（含油軸受材料やテフロン含侵材
料等で、特別な給油が不要なもの）であり、固定軸受１
２の主軸２１との接触面は主軸２１の形状（円）とほぼ
同一形状に形成されている。圧縮バネ１４の押圧力はバ
ネ押さえ１５によって調整する。さらに、測定器本体１
１の上端にはラジアル軸受と同様の摺動材料のスラスト
軸受１６が固着されている。測定器本体１１の外側には
測定器を取付治具に取り付けるフランジ１１ａが形成さ
れている。なお、図３で、図２のＢ−Ｂ断面では固定軸
受１２は現れないが、説明のため表示した。The main body 10 is, as shown in FIGS.
Radial bearings that support the main shaft 21 in the radial direction are provided at two locations in the axial direction of the measuring device main body 11, which is the support of the measuring device. The radial bearing is divided into three parts at a circumferential angle of about 120 degrees, and two of the three parts are fixed bearings 12.
Then, one position is the preload bearing 13 which is biased in the radial direction by the compression spring 14. The fixed bearing 12 and the preload bearing 13 are sliding materials (oil bearing materials, Teflon-impregnated materials, etc. that do not require special lubrication).
The contact surface of the second main shaft 21 with the main shaft 21 is formed in substantially the same shape as the main shaft 21 (circle). The pressing force of the compression spring 14 is adjusted by the spring retainer 15. Furthermore, the measuring instrument body 1
A thrust bearing 16 made of a sliding material similar to that of the radial bearing is fixed to the upper end of 1. A flange 11a for attaching the measuring instrument to a mounting jig is formed on the outside of the measuring instrument body 11. In FIG. 3, the fixed bearing 12 does not appear in the BB cross section of FIG. 2, but it is shown for the sake of explanation.
【００１２】主軸部２０は図３及び図４に示すように、
主軸２１は半径方向が本体部１０の２箇所のラジアル軸
受に支持され、軸方向がスラスト軸受１６で支持され
て、回転自在になっている。主軸２１の上部内側には内
筒２２が固着され、内筒２２の下端にはラジアル玉軸受
２３が設けられている。また、主軸２１の下端２１ｂに
はラジアル玉軸受２４と２個のスラスト玉軸受２５が設
けられ、これらとラジアル玉軸受２３によって送りネジ
２６が回転自在に支持されている。The main shaft portion 20 is, as shown in FIGS. 3 and 4,
The main shaft 21 is rotatably supported by two radial bearings in the main body 10 in the radial direction and by thrust bearings 16 in the axial direction. An inner cylinder 22 is fixed inside the upper part of the main shaft 21, and a radial ball bearing 23 is provided at the lower end of the inner cylinder 22. Further, a radial ball bearing 24 and two thrust ball bearings 25 are provided at the lower end 21b of the main shaft 21, and a feed screw 26 is rotatably supported by these and a radial ball bearing 23.
【００１３】スライドヘッド部３０は図３及び図５に示
すように、スライドヘッド３１の内側上下２箇所にラジ
アル軸受が設けられ、ラジアル軸受は、本体部１０のラ
ジアル軸受と同様に、円周角約１２０度間隔で３箇所に
分割構成され、３箇所中２箇所が固定軸受３２で、１箇
所が半径方向に圧縮バネ３４で半径方向に付勢された予
圧軸受３３である。また、固定軸受３２及び予圧軸受３
３は摺動材料であり、固定軸受３２の主軸２１との接触
面は主軸２１の形状（円）とほぼ同一形状に形成されて
いる。圧縮バネ３４の押圧力はバネ押さえ３５によって
調整する。また、スライドヘッド３１の内側に固着され
たスペーサ３６を介して略コの字形のナットホルダ３７
が取り付けられ、ナットホルダ３７の略コの字形の部分
に送りナット３８が設けられている。送りナット３８は
上下に形成された突起部分３８ａがナットホルダ３７の
略コの字形の上下部分に当接して移動方向（軸方向）が
規制されるとともに、端面３８ｂがナットホルダ３７の
略コの字形の側面に当接して回転方向が規制されてい
る。さらに、スペーサ３６の両側には摺動片３６ａが固
着され、摺動片３６ａは主軸２１の軸方向に形成された
案内面２１ｃの両側に当接しており、スライドヘッド３
１が主軸２１に対して回転しないようになっている。As shown in FIGS. 3 and 5, the slide head portion 30 is provided with radial bearings at two upper and lower positions inside the slide head 31, and the radial bearing has a circumferential angle similar to that of the radial bearing of the main body portion 10. The bearings are divided into three portions at intervals of about 120 degrees, two of the three portions are fixed bearings 32, and one portion is a preload bearing 33 which is biased radially by a compression spring 34 in the radial direction. In addition, the fixed bearing 32 and the preload bearing 3
Reference numeral 3 is a sliding material, and the contact surface of the fixed bearing 32 with the main shaft 21 is formed to have substantially the same shape as the main shaft 21 (circle). The pressing force of the compression spring 34 is adjusted by the spring retainer 35. In addition, a substantially U-shaped nut holder 37 is provided via a spacer 36 fixed inside the slide head 31.
Is attached, and a feed nut 38 is provided in a substantially U-shaped portion of the nut holder 37. In the feed nut 38, the moving portions (axial direction) of the feed nut 38 are regulated by the protrusions 38a formed on the upper and lower sides contacting the substantially U-shaped upper and lower portions of the nut holder 37, and the end surface 38b is formed on the nut holder 37. The rotation direction is regulated by contacting the side surface of the character shape. Further, sliding pieces 36a are fixed to both sides of the spacer 36, and the sliding pieces 36a are in contact with both sides of a guide surface 21c formed in the axial direction of the main shaft 21.
1 does not rotate with respect to the main shaft 21.
【００１４】検出器４０は図１・図２・図３・図５に示
すように、先端に検出センサ４１が設けられ、検出セン
サ４１の接触子４１ａがワークに接触する。検出器４０
は主軸２１を挟むようにスライドヘッド３１に２個のボ
ルト４２で取り付けられるとともに、検出センサ４１の
方向にスライドヘッド３１に対する位置が調整できるよ
うになっている。As shown in FIG. 1, FIG. 2, FIG. 3, and FIG. 5, the detector 40 is provided with a detection sensor 41 at its tip, and the contact 41a of the detection sensor 41 contacts the work. Detector 40
Is attached to the slide head 31 with two bolts 42 so as to sandwich the main shaft 21, and the position with respect to the slide head 31 can be adjusted in the direction of the detection sensor 41.
【００１５】主軸回転駆動手段５０は図３及び図６に示
すように、測定器本体１１の上端に固着されたベース５
１、ベース５１に設けられたラジアル玉軸受５２、ラジ
アル玉軸受５２の内輪に固着された駆動盤５３、駆動盤
５３に固着された歯車５４、駆動盤５３の下面で互いに
約１８０度離れた２箇所に取り付けられたローラ５５、
主軸２１の上端面でローラ５５から約９０度離れた位置
２箇所に取り付けられたローラ５６、駆動盤５３の下面
と主軸２１の上端面の間に載置された伝動盤５７、歯車
５４にモータ（図示省略）の回転を伝動する歯車５８か
ら構成されている。なお、図３で、図２のＢ−Ｂ断面で
はローラ５５は現れないが、説明のため表示した。同様
に駆動盤５３も厳密な断面形状ではない。As shown in FIGS. 3 and 6, the spindle rotation driving means 50 is a base 5 fixed to the upper end of the measuring device main body 11.
1, a radial ball bearing 52 provided on the base 51, a drive plate 53 fixed to an inner ring of the radial ball bearing 52, a gear 54 fixed to the drive plate 53, and a lower surface of the drive plate 53 separated from each other by about 180 degrees 2 Roller 55 attached to the location,
A roller 56 mounted at two positions on the upper end surface of the main shaft 21 at a position separated by about 90 degrees from the roller 55, a transmission plate 57 mounted between the lower surface of the drive plate 53 and the upper end surface of the main shaft 21, a motor on the gear 54. It is composed of a gear 58 that transmits rotation (not shown). In FIG. 3, the roller 55 does not appear in the BB cross section of FIG. 2, but it is shown for the sake of explanation. Similarly, the drive board 53 does not have a strict cross-sectional shape.
【００１６】スライドヘッド移動駆動手段６０は図３に
示すように、ベース５１の上端に固着されたベース６
１、ベース６１に設けられたラジアル玉軸受６２、駆動
盤５３に設けられたラジアル玉軸受６３、ラジアル玉軸
受６２とラジアル玉軸受６３に回転自在に支持された駆
動軸６４、駆動軸６４に固着された歯車６５、歯車６５
にモータ（図示省略）の回転を伝動する歯車６６、駆動
軸６４と送りネジ２６を連結するカップリング６７から
構成されている。As shown in FIG. 3, the slide head movement driving means 60 is a base 6 fixed to the upper end of the base 51.
1, a radial ball bearing 62 provided on the base 61, a radial ball bearing 63 provided on the drive panel 53, a drive shaft 64 rotatably supported by the radial ball bearing 62 and the radial ball bearing 63, and a drive shaft 64 Gear 65, gear 65
Further, it is composed of a gear 66 for transmitting the rotation of a motor (not shown), a coupling 67 for connecting the drive shaft 64 and the feed screw 26.
【００１７】配線手段７０は図３・図７・図８に示すよ
うに、スパイラルチューブ７２が一方の端７２ａがナッ
トホルダ３７の上面に、他方の端７２ｂが内筒２２の下
面に固定されていて、軸方向に伸縮自在となっている。
検出器４０から引き出されたケーブル７１はスライドヘ
ッド３１の溝３１ａ、スペーサ３６の穴３６ｂを通って
スパイラルチューブ７２の一方の端７２ａに入り、スパ
イラルチューブ７２を通って他方の端７２ｂから、歯車
５４の上面に固着された導電性のスリップリング７３に
接続されている。スリップリング７３は絶縁リング７４
で他と絶縁されて、ケーブル７１の本数に相当する数
（実施例では４個）だけ設けられており、スリップリン
グ７３にはホルダ７５に支持された導電性のスプリング
バー７６が両側から接触している。スプリングバー７６
は同一のスリップリング７３に接触している２本が接続
されて外部出力部（図示省略）に接続されている。スプ
リングバー７６を一つのスリップリング７３に２本ずつ
設けているのは導通の安定性をよくするためであり、機
能上は１本でよい。As shown in FIGS. 3, 7, and 8, the wiring means 70 has a spiral tube 72 having one end 72a fixed to the upper surface of the nut holder 37 and the other end 72b fixed to the lower surface of the inner cylinder 22. It is expandable and contractible in the axial direction.
The cable 71 pulled out from the detector 40 passes through the groove 31a of the slide head 31 and the hole 36b of the spacer 36 to enter one end 72a of the spiral tube 72, and passes through the spiral tube 72 from the other end 72b to the gear 54. Is connected to a conductive slip ring 73 fixed to the upper surface of the. The slip ring 73 is an insulating ring 74
The number of cables 71 (four in the embodiment) that is insulated from the others is provided, and the conductive spring bars 76 supported by the holder 75 come into contact with the slip ring 73 from both sides. ing. Spring bar 76
Are connected to the same slip ring 73 and are connected to an external output section (not shown). Two spring bars 76 are provided on each slip ring 73 for the purpose of improving the stability of conduction, and only one is required in terms of function.
【００１８】このように構成された可搬式真円度測定器
でワークの真円度や円柱形状を測定する場合、作業者は
検出器４０の変位検出範囲がワークの測定範囲をカバー
するように検出器４０の位置を調整し設定した後、測定
器を取付治具によってワークに取り付け、測定器の位置
や姿勢を調整してから測定に入る。測定時の検出器４０
の駆動は次のようになる。まず、検出器４０を回転する
場合は、主軸回転駆動手段５０のモータ（図示省略）を
起動すると、主軸回転駆動手段５０のモータからの回転
が歯車５８を介して歯車５４に伝動されて駆動盤５３が
回転し、駆動盤５３の下面に取り付けられたローラ５５
によって伝動盤５７が回転され、ローラ５６を介して主
軸２１が回転される。また、検出器４０を軸方向に移動
する場合は、スライドヘッド移動駆動手段６０のモータ
（図示省略）を起動すると、スライドヘッド移動駆動手
段６０のモータからの回転が歯車６６を介して歯車６５
に伝動されて駆動軸６４が回転し、カップリング６７を
介して送りネジ２６が回転する。送りネジ２６が回転す
ると、送りナット３８が上下に移動するので、スライド
ヘッド３１が上下に移動する。When measuring the roundness and the cylindrical shape of the work with the portable roundness measuring device constructed as described above, the operator should make the displacement detection range of the detector 40 cover the measurement range of the work. After the position of the detector 40 is adjusted and set, the measuring device is attached to the work by a mounting jig, and the position and orientation of the measuring device are adjusted before starting the measurement. Detector 40 at the time of measurement
Is driven as follows. First, when the detector 40 is rotated, when a motor (not shown) of the spindle rotation driving means 50 is started, the rotation from the motor of the spindle rotation driving means 50 is transmitted to the gear 54 via the gear 58 to drive the drive board. 53 rotates, and the roller 55 mounted on the lower surface of the drive board 53
Thus, the transmission plate 57 is rotated, and the main shaft 21 is rotated via the roller 56. Further, when the detector 40 is moved in the axial direction, when the motor (not shown) of the slide head movement driving means 60 is started, the rotation of the motor of the slide head movement driving means 60 is rotated through the gear 66 to the gear 65.
Is transmitted to the drive shaft 64, and the feed screw 26 is rotated via the coupling 67. When the feed screw 26 rotates, the feed nut 38 moves up and down, so that the slide head 31 moves up and down.
【００１９】この場合、固定軸受１２及び予圧軸受１３
は摺動材料であり、２箇所が固定軸受１２で、１箇所が
圧縮バネ１４で半径方向に付勢された予圧軸受１３であ
るので、主軸２１の回転精度は主軸２１そのものの真円
度精度のみによって決まり、主軸２１の回転精度の向上
が容易である。また、固定軸受１２の主軸２１との接触
面は主軸２１の形状（円）とほぼ同一形状に形成されて
いるので、面当たりとなり圧縮バネ１４による予圧軸受
１３の押圧力を小さくすることができる。予圧軸受１３
の押圧力を小さくすると、固定軸受１２及び予圧軸受１
３に形成される油膜が保持されやすくなり、回転精度が
安定するとともに、回転トルクが小さくなるので駆動モ
ータに小型のものを用いることができる。なお、スライ
ドヘッド３１のラジアル軸受についても基本構造は同じ
であるので、同様の効果がある。In this case, the fixed bearing 12 and the preload bearing 13
Is a sliding material, and two locations are a fixed bearing 12 and one location is a preload bearing 13 biased in a radial direction by a compression spring 14. Therefore, the rotation accuracy of the spindle 21 is the circularity accuracy of the spindle 21 itself. It is easy to improve the rotation accuracy of the main shaft 21 because it is determined only by. Further, since the contact surface of the fixed bearing 12 with the main shaft 21 is formed in substantially the same shape as the shape (circle) of the main shaft 21, it comes into contact with the surface and the pressing force of the compression spring 14 on the preload bearing 13 can be reduced. . Preload bearing 13
When the pressing force of is reduced, the fixed bearing 12 and the preload bearing 1
Since the oil film formed in 3 is easily held, the rotation accuracy is stable, and the rotation torque is small, a small drive motor can be used. Since the radial bearing of the slide head 31 has the same basic structure, the same effect can be obtained.
【００２０】また、検出器４０から出たケーブル７１
は、主軸２１の内部を案内されているので測定の妨げと
ならないし、スパイラルチューブ７２によって案内され
ているので送りネジ２６との干渉もない。また、主軸２
１とともに回転する部分にスリップリング７３が設けら
れ、外部出力部の固定側とはスプリングバー７６で接続
されているので主軸２１の回転量に制限がない。A cable 71 coming out of the detector 40
Does not interfere with the measurement because it is guided inside the main shaft 21 and does not interfere with the feed screw 26 because it is guided by the spiral tube 72. Also, the spindle 2
Since the slip ring 73 is provided in the portion that rotates together with 1, and the fixed side of the external output portion is connected by the spring bar 76, the rotation amount of the main shaft 21 is not limited.
【００２１】なお、実施例では主軸回転駆動手段５０と
スライドヘッド移動駆動手段６０のモータを別々のモー
タとして説明したが、モータを１個としクラッチ等によ
り切り換えて駆動する方法でもよい。また、本発明にお
いて検出器４０の検出センサは特に問わない。さらに、
取付治具がどのようなものでも本発明は適用できる。In the embodiment, the motors of the spindle rotation driving means 50 and the slide head movement driving means 60 are described as separate motors, but a single motor may be used to switch and drive the clutches or the like. Further, in the present invention, the detection sensor of the detector 40 is not particularly limited. further,
The present invention can be applied to any mounting jig.
【００２２】[0022]
【発明の効果】以上説明したように本発明によれば、可
搬式真円度測定器の主軸２１の半径方向の軸受を、軸方
向２箇所に設けられた滑り軸受のラジアル軸受とし、円
周角約１２０度間隔で３箇所に分割構成し、３箇所中２
箇所が固定軸受１２で１箇所が半径方向に付勢された予
圧軸受１３とするとともに、固定軸受１２の主軸２１と
の接触面は主軸２１の形状（円）とほぼ同一形状に形成
した。また、検出器４０から出たケーブル７１の軸方向
案内を主軸２１に内蔵された軸方向伸縮自在なスパイラ
ルチューブ７２によって行い、接続ケーブル７１の回転
側と外部出力部の固定側との接続をスリップリング機構
によって行うようにした。これによって、主軸２１の回
転精度は主軸２１そのものの真円度精度のみによって決
まり、主軸２１の回転精度の向上が容易である。また、
固定軸受１２の主軸２１との接触面は面当たりとなり予
圧軸受１３の押圧力を小さくすることができるので、固
定軸受１２及び予圧軸受１３に形成される油膜が保持さ
れやすくなり回転精度が安定するとともに、回転トルク
が小さくなることから駆動モータに小型のものを用いる
ことができる。さらに、検出器４０から出たケーブル７
１は、主軸２１の内部を案内されているので測定の妨げ
とならないし、スパイラルチューブ７２によって案内さ
れているので送りネジ２６との干渉もない。また、主軸
２１とともに回転する部分にスリップリング７３が設け
られ、外部出力部の固定側とはスプリングバー７６で接
続されているので主軸２１の回転量に制限がない。As described above, according to the present invention, the radial bearing of the main shaft 21 of the portable roundness measuring device is a radial bearing of a sliding bearing provided at two locations in the axial direction, and Divided into 3 parts at intervals of about 120 degrees, 2 out of 3 parts
A fixed bearing 12 is provided at one location and a preload bearing 13 is biased at one location in the radial direction, and the contact surface of the fixed bearing 12 with the main shaft 21 is formed to have substantially the same shape as the shape (circle) of the main spindle 21. In addition, the axial guide of the cable 71 coming out of the detector 40 is performed by the axially expandable / contractible spiral tube 72 incorporated in the main shaft 21, and the connection between the rotating side of the connecting cable 71 and the fixed side of the external output section is slipped. The ring mechanism is used. As a result, the rotation accuracy of the spindle 21 is determined only by the roundness accuracy of the spindle 21 itself, and it is easy to improve the rotation accuracy of the spindle 21. Also,
Since the contact surface of the fixed bearing 12 with the main shaft 21 comes into contact with the surface, the pressing force of the preload bearing 13 can be reduced, so that the oil film formed on the fixed bearing 12 and the preload bearing 13 can be easily held and the rotation accuracy can be stabilized. At the same time, since the rotation torque becomes small, a small drive motor can be used. Furthermore, the cable 7 from the detector 40
No. 1 does not interfere with the measurement because it is guided inside the main shaft 21, and there is no interference with the feed screw 26 because it is guided by the spiral tube 72. Further, since the slip ring 73 is provided in the portion that rotates together with the main shaft 21 and is connected to the fixed side of the external output portion by the spring bar 76, there is no limit to the amount of rotation of the main shaft 21.
【００２３】したがって、主軸の回転精度を上げること
が容易であるとともに、検出器の回転量及び軸方向移動
量を大きくとることができ、真円度測定精度が高く測定
範囲が広い可搬式真円度測定器を提供することができ
る。Therefore, the rotation accuracy of the main shaft can be easily improved, and the rotation amount and the axial movement amount of the detector can be made large, the roundness measurement accuracy is high, and the portable roundness is wide. A degree measuring device can be provided.
【図１】本発明に係る可搬式真円度測定器の実施例の全
体を示す側面図FIG. 1 is a side view showing an entire embodiment of a portable roundness measuring instrument according to the present invention.
【図２】図１のＡ矢視図FIG. 2 is a view on arrow A in FIG.
【図３】図２のＢ−Ｂ断面図3 is a sectional view taken along line BB of FIG.
【図４】図３のＣ−Ｃ断面図FIG. 4 is a sectional view taken along line CC of FIG.
【図５】図３のＤ−Ｄ断面図5 is a cross-sectional view taken along the line DD of FIG.
【図６】図３のＥ−Ｅ断面図6 is a sectional view taken along line EE of FIG.
【図７】図３のＦ−Ｆ断面図7 is a sectional view taken along line FF of FIG.
【図８】図３のスリップリング部分の拡大図FIG. 8 is an enlarged view of the slip ring portion of FIG.
１１……測定器本体 １２……固定軸受 １３……予圧軸受 １６……スラスト軸受 ２１……主軸 ２６……送りネジ ３１……スライドヘッド ３８……送りナット ４０……検出器 ５４……歯車 ６５……歯車 ７１……ケーブル ７２……スパイラルチューブ ７３……スリップリング ７６……スプリングバー 11 …… Measuring device main body 12 …… Fixed bearing 13 …… Preload bearing 16 …… Thrust bearing 21 …… Main shaft 26 …… Feed screw 31 …… Slide head 38 …… Feed nut 40 …… Detector 54 …… Gear 65 …… Gear 71 …… Cable 72 …… Spiral tube 73 …… Slip ring 76 …… Spring bar
Claims (2)
に支持された主軸と、前記主軸に沿って移動自在なスラ
イドヘッドと、前記スライドヘッドに取り付けられ前記
主軸の半径方向に変位検出機能を有する検出器と、前記
主軸の回転及び前記スライドヘッドの移動を駆動する駆
動手段と、前記検出器と外部出力部とを接続するケーブ
ルの案内をする配線手段と、から構成された可搬式真円
度測定器において、 前記測定器本体に設けられ、前記主軸を回転自在に支持
する軸受が、 前記主軸の軸方向２箇所に設けられ、前記主軸の半径方
向を支持する滑り軸受のラジアル軸受と、 前記測定器本体の上端に設けられ、前記主軸の軸方向を
支持する滑り軸受のスラスト軸受けと、 から構成され、 前記ラジアル軸受が、円周角約１２０度間隔で３箇所に
分割構成され、３箇所中２箇所が固定軸受で１箇所が前
記主軸の半径方向に付勢された予圧軸受であるととも
に、前記固定軸受の前記主軸との接触面を前記主軸の外
形状とほぼ同一形状に形成したことを特徴とする可搬式
真円度測定器。1. A measuring device main body, a main shaft rotatably supported by the measuring device main body, a slide head movable along the main shaft, and displacement detection in the radial direction of the main shaft attached to the slide head. A portable type including a detector having a function, a driving unit that drives the rotation of the main shaft and a movement of the slide head, and a wiring unit that guides a cable connecting the detector and an external output unit. In a roundness measuring instrument, a bearing that is provided in the measuring instrument body and that rotatably supports the spindle is provided in two axial positions of the spindle and is a radial bearing of a sliding bearing that supports the spindle in a radial direction. And a thrust bearing of a plain bearing which is provided at the upper end of the measuring device body and supports the main shaft in the axial direction, and the radial bearing has a circumferential angle of about 120 degrees at intervals of 3 degrees. The pre-load bearing is divided into two parts and two of the three parts are fixed bearings, and one part is a biased bearing in the radial direction of the main shaft, and the contact surface of the fixed bearing with the main shaft is the outer shape of the main shaft. A portable roundness measuring instrument characterized in that it is formed in substantially the same shape as.
に支持された主軸と、前記主軸に沿って移動自在なスラ
イドヘッドと、前記スライドヘッドに取り付けられ前記
主軸の半径方向に変位検出機能を有する検出器と、前記
主軸の回転及び前記スライドヘッドの移動を駆動する駆
動手段と、前記検出器と外部出力部とを接続するケーブ
ルの案内をする配線手段と、から構成された可搬式真円
度測定器において、 前記配線手段が、前記ケーブルの前記主軸の軸方向案内
を前記主軸に内蔵され前記主軸の軸方向に伸縮自在なス
パイラルチューブによって行い、前記ケーブルの回転側
と外部出力部の固定側との接続をスリップリング機構に
よって行うことを特徴とする可搬式真円度測定器。2. A measuring device main body, a main shaft rotatably supported by the measuring device main body, a slide head movable along the main shaft, and displacement detection in the radial direction of the main shaft attached to the slide head. A portable type including a detector having a function, a driving unit that drives the rotation of the main shaft and a movement of the slide head, and a wiring unit that guides a cable connecting the detector and an external output unit. In the roundness measuring device, the wiring means guides the cable in the axial direction of the main shaft by means of a spiral tube which is built in the main shaft and is expandable and contractible in the axial direction of the main shaft. A portable roundness measuring device characterized in that a slip ring mechanism is used to connect to the fixed side of the.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6196021A JP3035881B2 (en) | 1994-07-27 | 1994-07-27 | Portable roundness measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6196021A JP3035881B2 (en) | 1994-07-27 | 1994-07-27 | Portable roundness measuring instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0843075A true JPH0843075A (en) | 1996-02-16 |
| JP3035881B2 JP3035881B2 (en) | 2000-04-24 |
Family
ID=16350907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6196021A Expired - Fee Related JP3035881B2 (en) | 1994-07-27 | 1994-07-27 | Portable roundness measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3035881B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103105153A (en) * | 2013-01-23 | 2013-05-15 | 宁波大学 | Radial locating method of main shaft of roundness measuring instrument |
| CN105004293A (en) * | 2015-05-05 | 2015-10-28 | 萧山工业研究院 | Hub bearing ferrule part channel axial comprehensive position variation measurement method |
| CN112268499A (en) * | 2020-11-02 | 2021-01-26 | 新昌县羽林街道立锋轴承厂 | Bearing performance detection device |
| CN112444182A (en) * | 2020-10-26 | 2021-03-05 | 徐正涛 | Handheld bearing detection device |
-
1994
- 1994-07-27 JP JP6196021A patent/JP3035881B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103105153A (en) * | 2013-01-23 | 2013-05-15 | 宁波大学 | Radial locating method of main shaft of roundness measuring instrument |
| CN105004293A (en) * | 2015-05-05 | 2015-10-28 | 萧山工业研究院 | Hub bearing ferrule part channel axial comprehensive position variation measurement method |
| CN105004293B (en) * | 2015-05-05 | 2017-09-29 | 萧山工业研究院 | A kind of axial integrated location variation measuring method of hub bearing lasso part raceway groove |
| CN112444182A (en) * | 2020-10-26 | 2021-03-05 | 徐正涛 | Handheld bearing detection device |
| CN112268499A (en) * | 2020-11-02 | 2021-01-26 | 新昌县羽林街道立锋轴承厂 | Bearing performance detection device |
| CN112268499B (en) * | 2020-11-02 | 2022-06-10 | 德尔玛轴承有限公司 | Bearing performance detection device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3035881B2 (en) | 2000-04-24 |
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