JP2743251B2 - Method and apparatus for measuring dimensions of circular object - Google Patents
Method and apparatus for measuring dimensions of circular objectInfo
- Publication number
- JP2743251B2 JP2743251B2 JP15933394A JP15933394A JP2743251B2 JP 2743251 B2 JP2743251 B2 JP 2743251B2 JP 15933394 A JP15933394 A JP 15933394A JP 15933394 A JP15933394 A JP 15933394A JP 2743251 B2 JP2743251 B2 JP 2743251B2
- Authority
- JP
- Japan
- Prior art keywords
- measuring
- circular object
- arc
- circular
- measurement
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
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- Length Measuring Devices By Optical Means (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Description
【0001】[0001]
【産業上の利用分野】本発明は円形物体の寸法測定方法
および寸法測定装置に関する。さらに詳しくは、測定箇
所が限定されていても少なくとも半径の測定がなし得る
円形物体の寸法測定方法および寸法測定装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for measuring the size of a circular object. More specifically, the present invention relates to a dimension measuring method and a dimension measuring device for a circular object capable of measuring at least a radius even when a measurement location is limited.
【0002】[0002]
【従来の技術】例えば、鉄道車両に用いられている車輪
は、走行中におけるレールとの摩耗や、ブレーキシュー
との摩耗のために、車両が使用されている間にその形状
が変化して円形でなくなる。そのため、走行中に車両に
振動を生じさせ、乗り心地の悪化を招くことになる。こ
れを避けるために、車輪は所定の距離を走行した後、車
輪旋盤により削正されて円形に回復させられている。こ
の際、切削量の算定および切削量の確認のために、車輪
の直径の測定がなされている。従来、この測定は、特殊
なゲージを用いて人手によりなされている。2. Description of the Related Art For example, a wheel used in a railway vehicle changes its shape while the vehicle is in use due to abrasion with a rail during running and abrasion with a brake shoe, and the shape of the wheel changes. No longer. As a result, the vehicle is caused to vibrate during traveling, and the ride quality is degraded. In order to avoid this, the wheel is cut by a wheel lathe after traveling a predetermined distance, and is restored to a circular shape. At this time, the diameter of the wheel is measured for calculating the cutting amount and confirming the cutting amount. Conventionally, this measurement is performed manually using a special gauge.
【0003】しかしながら、人手により車輪の直径を測
定しようとすると、車両を検査坑上に停止させておい
て、この検査坑に作業員をもぐり込ませて測定しなけれ
ばならず、しかも通常1台の車両につき4対の車輪が装
着されているから、測定に多大な時間を要するというこ
とになる。また、車両によっては、このゲージによる測
定がなし得ないということもある。However, in order to measure the diameter of the wheels manually, the vehicle must be stopped on an inspection pit, and an operator must go into the inspection pit to perform the measurement. Since four pairs of wheels are mounted on each of the vehicles, a large amount of time is required for measurement. Further, depending on the vehicle, there is also a case where measurement by the gauge cannot be performed.
【0004】かかるゲージを用いた車輪の寸法測定方法
の問題に鑑み、従来より種々の提案がなされている。例
えば、特公平5ー46881号公報には、検査ゾーンの
軌道に、レールを走行する両側の車輪の内側に一対の接
触子を当てて車輪一対の内側距離を検出する内側距離検
出器と対をなして設けられ、レールを貫通する接触子を
フランジ外面に当てて車輪のフランジ厚を検出するフラ
ンジ厚検出器と、接触子をレールの内側位置でフランジ
外周面に当てて車輪のフランジ高を検出するフランジ高
検出器と、レールに沿って延びる内梁の両端に車輪のフ
ランジ外周面に接するベアリングを設けるとともにその
中央位置で車輪のフランジ外周面の高さを接触子で測定
し、演算によりフランジの直径を求めるフランジ直径検
出器とを配設し、これらの各検出器に検出値を演算処理
して表示する演算処理装置を接続したことを特徴とする
鉄道車両用車輪測定装置が提案されている。あるいは、
車輪に測定ローラーを押し当て、その回転量から車輪の
外周を測定し、その値から直径を測定する方法などが提
案されている。[0004] In view of the problem of the method of measuring the dimensions of a wheel using such a gauge, various proposals have conventionally been made. For example, Japanese Patent Publication No. 5-46881 discloses a pair of an inner distance detector for detecting the inner distance between a pair of wheels by applying a pair of contacts to the inside of wheels on both sides running on a rail on a track of an inspection zone. A flange thickness detector that detects the flange thickness of the wheel by applying a contact penetrating the rail to the outer surface of the flange, and detects the flange height of the wheel by applying the contact to the outer peripheral surface of the flange at the position inside the rail Provide a flange height detector and bearings at both ends of the inner beam extending along the rail, in contact with the outer peripheral surface of the wheel flange, measure the height of the outer peripheral surface of the wheel flange at the center position with a contact, and calculate the flange And a flange diameter detector for determining the diameter of the vehicle, and an arithmetic processing unit for processing and displaying the detected value is connected to each of these detectors. Constant apparatus has been proposed. Or,
A method has been proposed in which a measuring roller is pressed against a wheel, the outer circumference of the wheel is measured from the amount of rotation, and the diameter is measured from the value.
【0005】しかしながら、これらはいずれも接触式で
あるために、切削中は寸法測定がなし得ないという問題
がある。However, since these are all of the contact type, there is a problem that the dimensions cannot be measured during cutting.
【0006】また、特公表平1ー501785号公報に
は、通過中の鉄道車輪の車輪輪郭の軌道基準検出装置と
して、a)一つ以上の静止点から車輪上の複数の反射点
までの距離を電磁波で測る一つ以上の距離測定装置を備
え、上記測定装置は一つ以上の車輪軸に対して固定状の
測定基準線に沿って行われ、b)全測定中にレール上を
通過する車輪の横方向の直接位置を測定する別の距離測
定装置と、c)測定・記憶したデータを収集、変換、修
正および記憶するデータ処理装置とを備えたことを特徴
とする軌道上の測定領域を通過する時に通過中の鉄道車
輪の車輪輪郭の軌道基準検出装置が提案されている。[0006] Japanese Patent Publication No. 1-501785 discloses a track reference detecting device for the wheel contour of a passing railway wheel. A) Distances from one or more stationary points to a plurality of reflection points on the wheel. With one or more distance measuring devices, which measure along an electromagnetic wave by a fixed measuring reference line for one or more wheel axles, b) pass on rails during the whole measurement A measurement area on the track, comprising: a further distance measuring device for measuring the direct position of the wheel in the lateral direction; and c) a data processing device for collecting, converting, correcting and storing the measured and stored data. A trajectory reference detection device for the wheel profile of a railway wheel passing when passing through a road has been proposed.
【0007】しかしながら、この提案にかかわる車輪輪
郭の軌道基準検出装置は、走行している鉄道車両の車輪
輪郭を測定することを目的として構成されているため
に、静止させられている車両の車輪の直径を測定する装
置として適用することはできないという問題がある。[0007] However, since the track contour trajectory detecting device according to this proposal is designed to measure the wheel contour of a running railway vehicle, it is necessary to measure the wheel contour of a stationary vehicle. There is a problem that it cannot be applied as a device for measuring a diameter.
【0008】[0008]
【発明が解決しようとする課題】本発明はかかる従来技
術の問題点に鑑みなされたものであって、非接触により
車輪などの円形物体の少なくとも半径を測定する寸法測
定方法および寸法測定装置を提供することを目的として
いる。SUMMARY OF THE INVENTION The present invention has been made in view of the problems of the prior art, and provides a dimension measuring method and a dimension measuring apparatus for measuring at least a radius of a circular object such as a wheel by non-contact. It is intended to be.
【0009】[0009]
【課題を解決するための手段】本発明の円形物体の寸法
測定方法は、同一の円弧上に等角度間隔で、その円弧の
中心を臨むように配設されている3個の測定部を有する
非接触式距離測定手段を用いて、その円弧に円弧部を臨
ませて配置されている円形物体の少なくとも半径を測定
する方法であって、前記各測定部により円弧面までの
距離を測定する手順と、前記測定部のうち、外側に位
置するものの測定値を比較して、その差がなくなるま
で、前記各測定部をその相対的位置関係を保持しながら
移動させる手順と、中央に位置する測定部の測定値と
外側の測定部との測定値を比較して、その差がなくなる
まで、前記各測定部をその相対的位置関係を保持しなが
ら移動させる手順と、測定部が配設されている円弧の
曲率半径と前記測定値との差を求めることにより円形物
体の半径を求める手順とを含んでなることを特徴とする
ものである。SUMMARY OF THE INVENTION A method for measuring the size of a circular object according to the present invention comprises three measuring units arranged on the same arc at equal angular intervals so as to face the center of the arc. A method of measuring at least the radius of a circular object arranged with its arc portion facing the arc using a non-contact distance measuring means, wherein the measuring section measures the distance to the arc surface. And comparing the measured values of the outermost ones of the measuring units, moving the respective measuring units while maintaining their relative positional relationship until the difference disappears, and measuring the centrally located measurement unit. Comparing the measured values of the unit and the measured values of the outer measuring unit, and moving the measuring units while maintaining their relative positional relationship until the difference disappears, and a measuring unit is provided. Difference between the radius of curvature of the arc and the measured value And it is characterized in that it comprises a procedure for determining the radius of the circular object by obtaining.
【0010】本発明の円形物体の寸法測定方法において
は、前記円形物体の測定個所を変えて複数個所の寸法測
定を行い、その平均値により円形物体の半径を算出する
のが好ましく、また前記円形物体の直径および/または
中心位置を算出する手順が付加されているのも好まし
い。In the method of measuring the size of a circular object according to the present invention, it is preferable to measure the dimensions of the circular object at a plurality of locations while changing the measurement location of the circular object, and calculate the radius of the circular object based on the average value. It is also preferable that a procedure for calculating the diameter and / or the center position of the object is added.
【0011】ここで、前記における移動は、例えば回
転移動とされ、前記における移動は、例えば昇降移動
とされる。また、前記非接触式距離測定手段は、例えば
レーザ変位計とされる。Here, the above movement is, for example, a rotational movement, and the above movement is, for example, a vertical movement. The non-contact distance measuring means is, for example, a laser displacement meter.
【0012】一方、本発明の円形物体の寸法測定装置
は、円弧面を有する保持部材と、該保持部材の円弧面
に、その曲率中心を臨ませて等角度間隔で配設されてい
る3個の測定部を有する非接触式距離測定手段と、前記
保持手段を回動および昇降させる駆動手段と、前記測定
結果を処理するとともに、前記駆動手段を制御する演算
処理手段とを備えてなることを特徴とする。On the other hand, a circular object dimension measuring apparatus according to the present invention comprises a holding member having an arc surface, and three holding members arranged at equal angular intervals on the arc surface of the holding member so as to face the center of curvature thereof. A non-contact distance measuring unit having a measuring unit, a driving unit for rotating and lifting the holding unit, and an arithmetic processing unit for processing the measurement result and controlling the driving unit. Features.
【0013】本発明の円形物体の寸法測定装置において
は、円形物体を回転させる円形物体回転手段が付加され
てなるのが好ましい。In the apparatus for measuring the size of a circular object according to the present invention, a circular object rotating means for rotating the circular object is preferably added.
【0014】ここで、前記非接触式距離測定手段は、例
えばレーザ変位計とされる。また、前記保持部材の円弧
面は、例えば凹面あるいは凸面とされる。Here, the non-contact distance measuring means is, for example, a laser displacement meter. Further, the arc surface of the holding member is, for example, a concave surface or a convex surface.
【0015】[0015]
【作用】本発明は前記のごとく構成されているので、一
部しか露出していない場合においても、円形物体の少な
くとも半径を非接触で測定することができる。また、円
形物体を回転させて複数個所について測定し、その平均
値により半径を算出するようにした本発明の好ましい態
様においては、その精度向上が図られる。しかして、直
径はこの半径を用いて容易に算出される。Since the present invention is configured as described above, at least the radius of a circular object can be measured in a non-contact manner even when only a part is exposed. Further, in a preferred embodiment of the present invention in which a circular object is rotated and measured at a plurality of locations and the radius is calculated based on the average value, the accuracy is improved. Thus, the diameter is easily calculated using this radius.
【0016】[0016]
【実施例】以下、添付図面を参照しながら本発明を実施
例に基づいて説明するが、本発明はかかる実施例のみに
限定されるものではない。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described based on embodiments with reference to the attached drawings, but the present invention is not limited to only such embodiments.
【0017】本発明の円形物体の寸法測定方法に用いる
寸法測定装置の一実施例を図1および図2に示し、同寸
法測定装置は、非接触式距離測定手段(距離測定装置)
1と、この距離測定手段1の測定部11を保持している
保持部材2と、この保持部材2を回転および移動させる
駆動手段(駆動装置)3と、円形物体回転手段(回転装
置)4と、距離測定手段1からの測定結果の処理および
駆動手段3の制御ならびに円形物体回転手段4の制御を
行う演算処理手段(演算処理装置)5とを主要部として
なる。FIGS. 1 and 2 show an embodiment of a dimension measuring device used in the method for measuring the size of a circular object according to the present invention. The dimension measuring device is a non-contact type distance measuring means (distance measuring device).
1, a holding member 2 holding the measuring section 11 of the distance measuring means 1, a driving means (driving device) 3 for rotating and moving the holding member 2, a circular object rotating means (rotating device) 4, And an arithmetic processing means (arithmetic processing device) 5 for processing the measurement result from the distance measuring means 1, controlling the driving means 3 and controlling the circular object rotating means 4.
【0018】非接触式距離測定手段1としては、例えば
測定部11と計測器12とからなるレーザ変位計が用い
られる。このレーザ変位計1の測定部11は、図3に示
すように、3個とされるとともに保持部材2の円弧をな
している上面21に等角度間隔で、その曲率中心ORを
臨まさせ埋設されている。この角度は、測定対象となる
円形物体6のサイズに応じて適宜選定され特に限定はな
い。また、昇降機構32を両端の測定部11,11の中
央に置けば、測定部11は等間隔でなくてもよい。通
常、測定部11の配置角度としては、30度〜45度程
度が実用的に用いられるが、レーザ変位計1の精度によ
り10度以下とすることもできる。As the non-contact distance measuring means 1, for example, a laser displacement meter comprising a measuring section 11 and a measuring instrument 12 is used. Measuring unit 11 of the laser displacement meter 1, as shown in FIG. 3, at equal angular intervals on the upper surface 21 that is an arc of the holding member 2 together are three, buried allowed to face the center of curvature O R Have been. This angle is appropriately selected according to the size of the circular object 6 to be measured, and is not particularly limited. If the lifting mechanism 32 is placed at the center of the measuring units 11 at both ends, the measuring units 11 need not be at equal intervals. Usually, the arrangement angle of the measuring unit 11 is practically about 30 to 45 degrees, but may be 10 degrees or less depending on the accuracy of the laser displacement meter 1.
【0019】保持部材2は、前述したように、前記非接
触式距離測定手段1の測定部11が円弧上に埋設される
ように保持できる形式とされていればよい。また、その
下面22には、接合部23が設けられている。この接合
部23には、この保持部材2を回転させる駆動手段3の
回転機構31の回転軸31aが装着されている。そし
て、この保持部材2の上面21に形成されている円弧の
曲率半径Rは、測定対象の円形物体6の半径rより若干
大きな寸法とされているのが好ましい。なお、円形物体
6が円筒体とされ、その内径を測定する場合には、円弧
は凸とされるとともに、その曲率半径は円筒体の内径よ
り小さくされる。As described above, the holding member 2 only needs to be of a type that can hold the measuring part 11 of the non-contact distance measuring means 1 so as to be embedded in an arc. Further, a bonding portion 23 is provided on the lower surface 22. A rotation shaft 31a of a rotation mechanism 31 of the driving means 3 for rotating the holding member 2 is mounted on the joint 23. The radius of curvature R of the arc formed on the upper surface 21 of the holding member 2 is preferably slightly larger than the radius r of the circular object 6 to be measured. When the circular object 6 is a cylindrical body and its inner diameter is measured, the arc is made convex and the radius of curvature is made smaller than the inner diameter of the cylindrical body.
【0020】駆動手段3は、回転軸31aが保持部材2
の下面22に設けられている接合部23に装着されてい
る回転機構31と、この回転機構31を昇降させる昇降
機構32とからなる。回転機構31は、例えばパルスモ
ータとされる。また、昇降機構32は、例えば、前記パ
ルスモータ31を適宜手段により保持しているめねじ体
33にボールねじ34を螺合させて、このボールねじ3
4をサーボモータ35により回転させてなるものとされ
る。The driving means 3 is configured such that the rotating shaft 31a is
A rotating mechanism 31 mounted on the joint 23 provided on the lower surface 22 of the slab, and an elevating mechanism 32 for moving the rotating mechanism 31 up and down. The rotation mechanism 31 is, for example, a pulse motor. The elevating mechanism 32 is, for example, by screwing a ball screw 34 into a female screw body 33 holding the pulse motor 31 by appropriate means.
4 is rotated by a servomotor 35.
【0021】円形物体回転手段4は、例えば、駆動ロー
ラー41と従動ローラー42との対を2組用いて、円形
物体6の両端部6a,6bを支持するようにしたものと
される。この円形物体回転手段4も、演算処理手段5に
より制御されるものとされている。The circular object rotating means 4 supports both ends 6a and 6b of the circular object 6 by using two pairs of a driving roller 41 and a driven roller 42, for example. The circular object rotating means 4 is also controlled by the arithmetic processing means 5.
【0022】演算処理手段5は、非接触式距離測定手段
1からの測定結果に基づいて、前記駆動手段3の操作量
および円形物体回転手段4の操作量を算出するととも
に、円形物体6の直径を算出する機能を有するものとさ
れる。具体的には、例えばワークステーションに対応す
るプログラムを格納させて構成される。The arithmetic processing means 5 calculates the amount of operation of the driving means 3 and the amount of operation of the circular object rotating means 4 based on the measurement result from the non-contact distance measuring means 1, and calculates the diameter of the circular object 6 Is calculated. Specifically, for example, it is configured by storing a program corresponding to a workstation.
【0023】次に、このように構成された寸法測定装置
Mによる寸法測定について、図3および図4を参照しな
がら説明する。なお、距離測定手段1の測定部11は、
図の左側から第1測定部11A、第2測定部11Bおよ
び第3測定部11Cの順に配列されているものとする。Next, the dimension measurement by the dimension measuring apparatus M configured as described above will be described with reference to FIGS. The measuring unit 11 of the distance measuring means 1
Assume that the first measuring unit 11A, the second measuring unit 11B, and the third measuring unit 11C are arranged in this order from the left side of the drawing.
【0024】第1測定部11A、第2測定部11Bお
よび第3測定部11Cの各々により、円形物体6の表面
までの距離L1,L2,L3を測定する。The distances L 1 , L 2 , and L 3 to the surface of the circular object 6 are measured by each of the first measuring unit 11A, the second measuring unit 11B, and the third measuring unit 11C.
【0025】L1とL3とが等しくない場合、演算処理
手段5により駆動手段3の回転機構31の操作量を算出
して、その操作量により回転機構31を操作して両者を
等しくする。例えば、L1がL3より小さいとすれば、回
転によりL1は若干大きなL1´となり、L3は回転によ
り若干小さなL3´となる。あるいは、回転機構31を
逐次操作させて両者を等しくする。これにより、第2測
定部11Bが円形物体6の中心Orの真下に位置するこ
とになる(図3参照)。When L 1 and L 3 are not equal, the operation amount of the rotation mechanism 31 of the driving means 3 is calculated by the arithmetic processing means 5 and the rotation mechanism 31 is operated based on the operation amount to make them equal. For example, if L 1 is the L 3 is less than, L 1 slightly larger L 1 by rotation 'next, L 3 slightly by rotating small L 3' becomes. Alternatively, the two are made equal by operating the rotation mechanism 31 sequentially. Thereby, the second measuring portion 11B is positioned directly below the center O r of the circular object 6 (see FIG. 3).
【0026】L1´とL2とが等しくない場合、演算処
理手段5により駆動手段3の昇降機構32の操作量を算
出して、その操作量により昇降機構32を操作して、L
2を若干変化させてL2´として両者を等しくする。これ
により、円形物体6の中心Orと保持部材2の上面21
の円弧の曲率中心ORとが一致することになる(図4参
照)。ここで、L1,L3の大小判別により両者が等しく
なる方向に傾けるのみ、あるいはL1,L2の距離が等し
くなるように接近・退避を行うのみで、途中の数値演算
を省略することもできる。When L 1 ′ is not equal to L 2 , the operation amount of the raising / lowering mechanism 32 of the driving means 3 is calculated by the arithmetic processing means 5, and the lifting / lowering mechanism 32 is operated based on the operation amount.
2 is slightly changed so that both are equal as L 2 ′. Thus, the upper surface of the center O r and the holding member 2 of a circular object 6 21
So that the center of curvature O R of the arc of the match (see FIG. 4). Here, it is only necessary to incline in the direction in which the two are equal according to the magnitude discrimination of L 1 and L 3 , or to perform approach / retreat so that the distance between L 1 and L 2 is equal, and omit the numerical calculation in the middle Can also.
【0027】演算処理手段5において、保持部材2の
上面21の円弧の曲率半径Rから円弧表面と円形部材6
の外表面との距離L2´を引いて円形物体6の半径rを
求め、それを2倍することにより円形物体2の直径を算
出する。ついで、所望により円形物体6の中心Or位置
を算出する。これは、保持部材2の円弧面の曲率中心O
Rと円形物体の中心Orが一致しているので、容易に算出
される。In the arithmetic processing means 5, the arc surface and the circular member 6 are determined from the radius of curvature R of the arc on the upper surface 21 of the holding member 2.
The radius r of the circular object 6 is obtained by subtracting the distance L 2 ′ from the outer surface of the circular object 6, and the radius r is doubled to calculate the diameter of the circular object 2. Next, the center Or position of the circular object 6 is calculated as desired. This is because the center of curvature O of the arc surface of the holding member 2 is
Since the center O r R and the circular object are matched, it is easily calculated.
【0028】円形物体回転手段4により円形物体6を
所定角度回転する。The circular object rotating means 4 rotates the circular object 6 by a predetermined angle.
【0029】この寸法測定および円形物体6の回転を所
定回繰り返して、円形物体6の直径の平均値を算出す
る。The measurement of the size and the rotation of the circular object 6 are repeated a predetermined number of times, and the average value of the diameter of the circular object 6 is calculated.
【0030】このように本実施例によれば、非接触によ
り円形物体の半径あるいは直径を測定することができ
る。また、円形物体の複数個所について測定を行い、そ
の平均値により半径あるいは直径を求めているので、精
度よく半径あるいは直径を算出できる。さらに、円形物
体の中心位置が必要な場合には、それも算出できる。As described above, according to this embodiment, the radius or diameter of a circular object can be measured without contact. In addition, since the radius or the diameter is obtained from the average value by measuring at a plurality of positions of the circular object, the radius or the diameter can be calculated with high accuracy. Further, when the center position of the circular object is required, it can be calculated.
【0031】以上、本発明を実施例に基づいて説明して
きたが、本発明はかかる実施例のみに限定されるもので
はなく、種々改変が可能である。例えば、簡易迅速に直
径を求める場合には、円形物体を回転させることなく、
一回の測定のみにより直径を求めるようにしてもよい。Although the present invention has been described based on the embodiments, the present invention is not limited to only the embodiments, and various modifications are possible. For example, when finding the diameter simply and quickly, without rotating the circular object,
The diameter may be obtained by only one measurement.
【0032】[0032]
【発明の効果】以上説明してきたように、本発明によれ
ば、非接触により円形物体の半径や直径あるいは内径を
測定できるという優れた効果が得られる。そのため、本
発明を車輪旋盤に適用すれば、車輪の修正加工中におい
ても車輪の直径の測定がなし得、作業能率を損なわない
という優れた効果も得られる。また、円形物体の一部か
ら直径を算出できるので、円形物体の大部分が被覆され
ていても直径の測定がなし得るという優れた効果も得ら
れる。鉄道車両に用いられる車輪はフード等に覆われて
いる部分が多いので、この点からも本発明は車輪旋盤に
おける車輪の寸法測定に好適に適用できる。さらに、寸
法測定の際に、円形物体の中心位置も同時に測定できる
という効果も得られる。このため、本発明を車輪旋盤に
適用すれば、切削工具等の位置調整が容易になし得ると
いう効果も得られる。As described above, according to the present invention, an excellent effect that the radius, diameter or inner diameter of a circular object can be measured without contact is obtained. Therefore, if the present invention is applied to a wheel lathe, the diameter of the wheel can be measured even during the correction processing of the wheel, and an excellent effect of not impairing the working efficiency can be obtained. Further, since the diameter can be calculated from a part of the circular object, an excellent effect that the diameter can be measured even when most of the circular object is covered can be obtained. Since many wheels used in railway vehicles are covered with a hood or the like, the present invention can be suitably applied to the measurement of wheel dimensions in a wheel lathe from this point as well. Further, there is an effect that the center position of the circular object can be measured at the same time when the dimension is measured. For this reason, if the present invention is applied to a wheel lathe, there is also obtained an effect that the position of a cutting tool or the like can be easily adjusted.
【図1】本発明の測定方法に用いられる測定装置のブロ
ック図である。FIG. 1 is a block diagram of a measuring device used in a measuring method of the present invention.
【図2】同測定装置の概略図である。FIG. 2 is a schematic diagram of the measurement device.
【図3】本発明の測定方法の説明図であって、第2測定
部を円形物体の中心の真下に位置させた状態を示すもの
である。FIG. 3 is an explanatory diagram of the measuring method of the present invention, showing a state where the second measuring unit is located directly below the center of the circular object.
【図4】本発明の測定方法の説明図であって、保持部材
の上面の曲率中心と円形物体の中心を一致させた状態を
示すものである。FIG. 4 is an explanatory view of the measuring method of the present invention, showing a state in which the center of curvature of the upper surface of the holding member and the center of the circular object are matched.
1 非接触式距離測定手段(測定装置)、レーザ
変位計 11 測定部 12 計測器 2 保持手段 21 上面 22 下面 23 接合部 3 駆動手段(駆動装置) 31 回転機構 32 昇降機構 4 円形物体回転手段(円形物体回転装置) 41 駆動ローラー 42 従動ローラー 5 演算処理手段(演算処理装置) 6 円形物体 M 寸法測定装置DESCRIPTION OF SYMBOLS 1 Non-contact distance measuring means (measuring device), laser displacement meter 11 Measuring part 12 Measuring device 2 Holding means 21 Upper surface 22 Lower surface 23 Joining part 3 Driving means (driving device) 31 Rotating mechanism 32 Elevating mechanism 4 Circular object rotating means ( Circular object rotating device) 41 drive roller 42 driven roller 5 arithmetic processing means (arithmetic processing device) 6 circular object M dimension measuring device
Claims (10)
の中心を臨むように配設されている3個の測定部を有す
る非接触式距離測定手段を用いて、その円弧に円弧部を
臨ませて配置されている円形物体の少なくとも半径を測
定する方法であって、 前記各測定部により円弧面までの距離を測定する手順
と、 前記測定部の内、外側に位置するものの測定値を比較
して、その差がなくなるまで、前記各測定部をその相対
的位置関係を保持しながら移動させる手順と、 中央に位置する測定部の測定値と外側の測定部との測
定値を比較して、その差がなくなるまで、前記各測定部
をその相対的位置関係を保持しながら移動させる手順
と、 測定部が配設されている円弧の曲率半径と前記測定値
との差を求めることにより円形物体の半径を求める手順 とを含んでなることを特徴とする円形物体の寸法測定方
法。1. A non-contact type distance measuring means having three measuring portions disposed at equal angular intervals on the same circular arc so as to face the center of the circular arc. A method of measuring at least the radius of a circular object that is disposed facing the surface, a procedure of measuring a distance to an arc surface by each of the measurement units, and a measurement value of an outer one of the measurement units And moving the measuring units while maintaining their relative positional relationship until the difference disappears, and comparing the measured value of the centrally located measuring unit with the measured value of the outer measuring unit. And moving the respective measuring units while maintaining their relative positional relationship until the difference disappears, and obtaining a difference between the radius of curvature of an arc provided with the measuring unit and the measured value. To find the radius of a circular object by Dimension measuring method of a circular object, characterized by comprising Nde.
所の寸法測定を行い、その平均値により円形物体の半径
を算出することを特徴とする請求項1記載の円形物体の
寸法測定方法。2. The method for measuring the size of a circular object according to claim 1, wherein the measurement of the size of the circular object is performed by changing the measurement position of the circular object, and the radius of the circular object is calculated based on the average value.
位置を算出する手順が付加されていることを特徴とする
請求項1または2記載の円形物体の寸法測定方法。3. The method for measuring the size of a circular object according to claim 1, further comprising a step of calculating a diameter and / or a center position of the circular object.
記における移動が昇降移動であることを特徴とする請
求項1記載の円形物体の寸法測定方法。4. The method according to claim 1, wherein the movement is a rotational movement, and the movement is a vertical movement.
位計であることを特徴とする請求項1、2、3または4
記載の円形物体の寸法測定方法。5. The non-contact distance measuring means is a laser displacement meter.
The method for measuring the dimensions of the circular object described.
の円弧面に、その曲率中心を臨ませて等角度間隔で配設
されている3個の測定部を有する非接触式距離測定手段
と、前記保持手段を回動および昇降させる駆動手段と、
前記測定結果を処理するとともに、前記駆動手段を制御
する演算処理手段とを備えてなることを特徴とする円形
物体の寸法測定装置。6. A non-contact distance measuring means comprising: a holding member having an arc surface; and three measuring portions arranged at equal angular intervals on the arc surface of the holding member with the center of curvature thereof facing the arc member. Driving means for rotating and lifting the holding means,
An apparatus for measuring the size of a circular object, comprising: an arithmetic processing unit that processes the measurement result and controls the driving unit.
が付加されてなることを特徴とする請求項6記載の円形
物体の寸法測定装置。7. An apparatus for measuring the size of a circular object according to claim 6, further comprising a circular object rotating means for rotating the circular object.
計であることを特徴とする請求項6また7記載の円形物
体の寸法測定装置。8. The apparatus for measuring the size of a circular object according to claim 6, wherein said non-contact distance measuring means is a laser displacement meter.
ることを特徴とする請求項6記載の寸法測定装置。9. The dimension measuring device according to claim 6, wherein an arc surface of the holding member is concave.
なることを特徴とする請求項6記載の寸法測定装置。10. The dimension measuring device according to claim 6, wherein an arc surface of the holding member is formed as a convex surface.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15933394A JP2743251B2 (en) | 1994-06-16 | 1994-06-16 | Method and apparatus for measuring dimensions of circular object |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15933394A JP2743251B2 (en) | 1994-06-16 | 1994-06-16 | Method and apparatus for measuring dimensions of circular object |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH085356A JPH085356A (en) | 1996-01-12 |
JP2743251B2 true JP2743251B2 (en) | 1998-04-22 |
Family
ID=15691538
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Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15933394A Expired - Lifetime JP2743251B2 (en) | 1994-06-16 | 1994-06-16 | Method and apparatus for measuring dimensions of circular object |
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JP (1) | JP2743251B2 (en) |
Families Citing this family (2)
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---|---|---|---|---|
KR20140071534A (en) * | 2012-11-19 | 2014-06-12 | 주식회사 한광 | Method for measuring bar-like workpieces information of laser machining apparatus for machining bar-like workpieces |
CN112815895A (en) * | 2020-12-23 | 2021-05-18 | 中国铁路乌鲁木齐局集团有限公司科学技术研究所 | Wheel set size measuring device and wheel set size on-machine measuring method in rotary repair operation |
-
1994
- 1994-06-16 JP JP15933394A patent/JP2743251B2/en not_active Expired - Lifetime
Also Published As
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