JP2707335B2 - Ground pressure measurement method for rotating body - Google Patents
Ground pressure measurement method for rotating bodyInfo
- Publication number
- JP2707335B2 JP2707335B2 JP1214129A JP21412989A JP2707335B2 JP 2707335 B2 JP2707335 B2 JP 2707335B2 JP 1214129 A JP1214129 A JP 1214129A JP 21412989 A JP21412989 A JP 21412989A JP 2707335 B2 JP2707335 B2 JP 2707335B2
- Authority
- JP
- Japan
- Prior art keywords
- measurement
- rotating body
- plate
- measurement point
- ground pressure
- 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
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、タイヤなどの回転体の接地圧を効率的にで
きる測定方法に関する。Description: TECHNICAL FIELD The present invention relates to a measuring method capable of efficiently measuring the contact pressure of a rotating body such as a tire.
従来、例えばタイヤなどの回転体の接地圧をトレッド
面のすべり摩擦エネルギーとして測定して、トレッド面
の摩耗程度を評価することが行われている。2. Description of the Related Art Conventionally, for example, a ground pressure of a rotating body such as a tire is measured as sliding friction energy of a tread surface to evaluate a degree of wear of the tread surface.
トレッド面の接地圧の測定は、測定プレートを取り付
けた走行平板の面上にタイヤを回転走行させ、トレッド
面の任意の測定点を測定プレートに設けた圧力センサー
で測定することにより行われる。The measurement of the contact pressure on the tread surface is performed by rotating and running the tire on the surface of a running flat plate to which a measurement plate is attached, and measuring an arbitrary measurement point on the tread surface with a pressure sensor provided on the measurement plate.
この場合、トレッド面の測定点と測定プレートのにお
ける圧力センサーの受感部とが完全に一致しなければ正
常な接地圧は測定できないので、タイヤを回転走行させ
る前に上記測定点と圧力センサーとを一致させるための
位置合わせ作業が行われる。しかし、この作業は、作業
者の勘と経験とによってなされるため、作業に時間がか
かり、かつ位置ズレが頻繁に発生するため、測定データ
が信頼性に欠けるなどの問題があった。In this case, the normal contact pressure cannot be measured unless the measurement point on the tread surface and the sensing portion of the pressure sensor on the measurement plate completely match, so before rotating the tire, the measurement point and the pressure sensor Is performed to match the positions. However, since this work is performed based on the intuition and experience of the operator, the work takes a long time, and a positional shift frequently occurs, so that there is a problem that measurement data lacks reliability.
本発明は、このような事情にかんがみなされたもので
あって、位置合わせ作業を自動化させ、測定の迅速化お
よび測定データの信頼性の向上をはかった回転体の接地
圧測定方法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 provides a method of measuring a ground pressure of a rotating body which automates a positioning operation, speeds up measurement, and improves reliability of measurement data. With the goal.
本発明の接地圧測定方法は、回転体をＸ方向に走行さ
せる走行平板に、Ｘ方向に直交するＹ方向に移動可能に
測定プレートを取り付け、該測定プレートに前記回転体
の接地圧を感知する圧力センサーを組み込むと共にＸ座
標・Ｙ座標を読み取るディジタイザーを設け、さらに、
前記走行平板上の回転体と前記測定プレートとにそれぞ
れサーボモータを設けて接地圧測定装置を構成し、前記
回転体の外周面に接地圧の測定点を転写可能にプロット
し、この回転体を前記走行平板から測定プレートへダミ
ー走行させて該測定点を前記測定プレートに転写し、該
転写された測定点と前記圧力センサーとの位置のズレを
前記ディジタイザーでＸ座標・Ｙ座標として読み取り、
このズレ信号を上記両方のサーボモータにそれぞれ入力
し、これらのサーボモータを駆動させて前記測定プレー
トをＹ方向に修正移動させると共に前記回転体をＸ方向
に修正移動させたのち、前記回転体を本走行させて前記
転写された測定点の位置と圧力センサーの位置とを一致
させることを特徴とする。According to the ground pressure measuring method of the present invention, a measuring plate is attached to a traveling flat plate for moving a rotating body in the X direction so as to be movable in a Y direction orthogonal to the X direction, and the ground pressure of the rotating body is sensed on the measuring plate. A digitizer that incorporates a pressure sensor and reads X and Y coordinates is provided.
Servo motors are respectively provided on the rotating body and the measurement plate on the traveling flat plate to constitute a ground pressure measuring device, and a measurement point of the ground pressure is plotted on the outer peripheral surface of the rotating body so as to be transferable. The dummy traveling from the traveling flat plate to the measurement plate, the measurement point is transferred to the measurement plate, and the deviation of the position of the transferred measurement point and the pressure sensor is read as the X coordinate / Y coordinate with the digitizer,
This shift signal is input to both of the servomotors, and the servomotors are driven to correct and move the measurement plate in the Y direction and to correct the rotator in the X direction. The main running is performed so that the position of the transferred measurement point and the position of the pressure sensor are matched.
以下、図を参照してタイヤの接地圧を測定する場合の
手段につき詳しく説明する。Hereinafter, the means for measuring the contact pressure of the tire will be described in detail with reference to the drawings.
図において、１は被測定体のタイヤ４をＸ方向（長手
方向）に走行させる走行平板である。この走行平板１に
は、Ｘ方向に直交するＹ方向（幅方向）に移動可能に測
定プレート２が取り付けられている。測定プレート２に
は、タイヤの接地圧を感知する圧力センサー６が組み込
まれ、また、Ｘ座標・Ｙ座標を読み取るディジタイザー
Ｔが設けられている。走行平板１上のタイヤ４と測定プ
レート２には、それぞれサーボモータ８および９が設け
られている。このようにして、接地圧測定装置が構成さ
れる。In the drawing, reference numeral 1 denotes a running flat plate for running the tire 4 of the measured object in the X direction (longitudinal direction). A measuring plate 2 is attached to the traveling flat plate 1 so as to be movable in a Y direction (width direction) orthogonal to the X direction. The measurement plate 2 incorporates a pressure sensor 6 for sensing the contact pressure of the tire, and a digitizer T for reading X and Y coordinates. Servo motors 8 and 9 are provided on the tire 4 and the measurement plate 2 on the traveling flat plate 1, respectively. Thus, a ground pressure measuring device is configured.
本発明では、タイヤ４のトレッド面に測定点３をチョ
ークやマジックペン等の転写可能な着色剤でプロット
し、このタイヤ４を一定荷重下に上記走行平板１から測
定プレート２へ向けてダミー走行させる。これにより、
測定点３の着色剤を測定プレート２の面上に転写する。
転写後、タイヤ４は逆転走行させて元のタイヤスタート
位置５に戻す。In the present invention, the measurement point 3 is plotted on the tread surface of the tire 4 with a transferable colorant such as a chalk or a magic pen, and the tire 4 is subjected to dummy running from the running flat plate 1 to the measuring plate 2 under a constant load. Let it. This allows
The colorant at the measurement point 3 is transferred onto the surface of the measurement plate 2.
After the transfer, the tire 4 is caused to run in the reverse direction and return to the original tire start position 5.
ついで、転写された測定点３′と圧力センサー６との
位置のズレをディジタイザーＴでＸ座標・Ｙ座標として
読み取り、このズレ信号をマイクロコンピュータ７を介
して両方のサーボモータ８および９にそれぞれ入力す
る。これによって、これらのサーボモータ８および９を
駆動させ、測定プレート２をＹ方向に修正移動させると
共にタイヤ４をＸ方向に修正移動させて上記ズレ量を解
消する。Then, the displacement between the transferred measurement point 3 'and the pressure sensor 6 is read as an X coordinate and a Y coordinate by a digitizer T, and this displacement signal is sent to both servo motors 8 and 9 via a microcomputer 7, respectively. input. As a result, the servomotors 8 and 9 are driven to correct the displacement of the measurement plate 2 in the Y direction and correct the movement of the tire 4 in the X direction, thereby eliminating the above-mentioned displacement.
この後、測定点の接地圧を測定するためタイヤ４を本
走行させると、タイヤ４のトレッド面上の測定点３の位
置と圧力センサー６の位置とを一致させることができ
る。Thereafter, when the tire 4 is fully driven to measure the contact pressure at the measurement point, the position of the measurement point 3 on the tread surface of the tire 4 and the position of the pressure sensor 6 can be matched.
本発明によれば、このようにしてタイヤスタート位置
５の修正と圧力センサー６の位置の修正とをして本走行
するため、従来におけるように作業者の勘と経験とによ
る位置合わせ作業を必要としないので、多数のタイヤを
自動的に短時間で測定処理することができる。According to the present invention, since the actual running is performed with the correction of the tire start position 5 and the correction of the position of the pressure sensor 6 in this manner, it is necessary to perform a positioning operation based on the intuition and experience of the operator as in the related art. Therefore, a large number of tires can be automatically measured in a short time.
なお、タイヤの接地に際しては、曲面を構成するトレ
ッド面が平面の路面に接することになるために、トレッ
ド面には収縮力が作用する。この収縮力によってトレッ
ド面と路面との間にすべりが生じる。このようなすべり
の大きさ、すなわちすべり量は本発明では上記圧力セン
サー６に変位センサーを組み込むようにすれば同時に測
定することができる。また、タイヤスタート位置５を設
定するに際して、タイヤ４の位置を固定して、走行平板
１および測定プレート２を全体的にＸ方向に修正移動さ
せることもできる。さらに、実施例ではタイヤの場合に
ついて説明したが、本発明は他の同様な回転体にも応用
することができる。When the tire comes into contact with the ground, a contraction force acts on the tread surface because the tread surface that forms the curved surface comes into contact with a flat road surface. The contraction force causes a slip between the tread surface and the road surface. In the present invention, the magnitude of such slip, that is, the amount of slip, can be measured simultaneously by incorporating a displacement sensor into the pressure sensor 6. Further, when setting the tire start position 5, the position of the tire 4 can be fixed, and the traveling flat plate 1 and the measurement plate 2 can be corrected and moved as a whole in the X direction. Furthermore, although the case of the tire has been described in the embodiment, the present invention can be applied to other similar rotating bodies.
以上説明したように本発明によれば、走行平板に対し
測定プレートを横移動可能に取り付け、この走行平板上
を測定プレートに向けて、外周面に接地圧の測定点を転
写可能にプロットした回転体をダミー走行させてこの測
定点を測定プレートに転写せしめ、ついで転写された測
定点の位置を補正してタイヤスタート位置と測定プレー
トの圧力センサーの位置とを修正した後、回転体を本走
行させるため、下記の効果を奏することができる。As described above, according to the present invention, the measurement plate is attached to the traveling plate so as to be able to move laterally, and the traveling plate is turned toward the measurement plate, and the measurement point of the ground pressure is plotted on the outer peripheral surface so as to be transferable. Run the body on a dummy to transfer the measurement points to the measurement plate, and then correct the position of the transferred measurement points to correct the tire start position and the position of the pressure sensor on the measurement plate. Therefore, the following effects can be obtained.
作業者の測定点位置合わせ時間を大幅に短縮でき
る。The measurement point positioning time of the operator can be greatly reduced.
予定した測定点位置と実際の測定点位置との位置ズ
レがなくなるため、測定のやり直し等がなくなるので、
測定効率が飛躍的に向上する。Since there is no positional deviation between the planned measurement point position and the actual measurement point position, there is no need to repeat the measurement.
Measurement efficiency is dramatically improved.
測定データの信頼性が向上する。 The reliability of the measurement data is improved.
図は本発明の接地圧測定方法を実施する装置の一例を示
す斜視説明図である。 １……走行平板、２……測定プレート、３……測定点、
３′……転写された測定点、４……タイヤ、５……タイ
ヤスタート位置、６……圧力センサー、７……マイクロ
コンピュータ、８……サーボモータ、９……サーボモー
タ。FIG. 1 is a perspective explanatory view showing an example of an apparatus for implementing the ground pressure measuring method of the present invention. 1 ... running plate, 2 ... measurement plate, 3 ... measurement point,
3 ': transferred measurement point, 4 ... tire, 5 ... tire start position, 6 ... pressure sensor, 7 ... microcomputer, 8 ... servo motor, 9 ... servo motor.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭52−74376（ＪＰ，Ａ) 特開 昭58−191953（ＪＰ，Ａ) 特開 昭62−34027（ＪＰ，Ａ) 実開 昭56−88135（ＪＰ，Ｕ) 実開 昭62−5248（ＪＰ，Ｕ) ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-52-74376 (JP, A) JP-A-58-191953 (JP, A) JP-A-62-34027 (JP, A) 88135 (JP, U) Actually open 62-5248 (JP, U)
Claims (1)
Ｘ方向に直交するＹ方向に移動可能に測定プレートを取
り付け、該測定プレートに前記回転体の接地圧を感知す
る圧力センサーを組み込むと共にＸ座標・Ｙ座標を読み
取るディジタイザーを設け、さらに、前記走行平板上の
回転体と前記測定プレートとにそれぞれサーボモータを
設けて接地圧測定装置を構成し、前記回転体の外周面に
接地圧の測定点を転写可能にプロットし、この回転体を
前記走行平板から測定プレートへダミー走行させて該測
定点を前記測定プレートに転写し、該転写された測定点
と前記圧力センサーとの位置のズレを前記ディジタイザ
ーでＸ座標・Ｙ座標として読み取り、このズレ信号を上
記両方のサーボモータにそれぞれ入力し、これらのサー
ボモータを駆動させて前記測定プレートをＹ方向に修正
移動させると共に前記回転体をＸ方向に修正移動させた
のち、前記回転体を本走行させて前記転写された測定点
の位置と圧力センサーの位置とを一致させることを特徴
とする回転体の接地圧測定方法。1. A traveling flat plate for moving a rotating body in an X direction,
A measurement plate is mounted so as to be movable in a Y direction orthogonal to the X direction, a pressure sensor for sensing a ground pressure of the rotating body is incorporated in the measurement plate, and a digitizer for reading X and Y coordinates is provided. Servo motors are respectively provided on the rotating body on the flat plate and the measurement plate to constitute a ground pressure measuring device, and a ground pressure measurement point is plotted on the outer peripheral surface of the rotating body so as to be transferable. The measurement point is transferred to the measurement plate by dummy running from the flat plate to the measurement plate, and the deviation between the position of the transferred measurement point and the pressure sensor is read by the digitizer as the X coordinate and the Y coordinate. A signal is input to each of the two servomotors, and these servomotors are driven to correct and move the measurement plate in the Y direction. A method of measuring the ground pressure of the rotating body, wherein after the rotating body is corrected and moved in the X direction, the rotating body is fully driven to make the position of the transferred measurement point coincide with the position of the pressure sensor. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1214129A JP2707335B2 (en) | 1989-08-22 | 1989-08-22 | Ground pressure measurement method for rotating body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1214129A JP2707335B2 (en) | 1989-08-22 | 1989-08-22 | Ground pressure measurement method for rotating body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0378636A JPH0378636A (en) | 1991-04-03 |
| JP2707335B2 true JP2707335B2 (en) | 1998-01-28 |
Family
ID=16650704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1214129A Expired - Lifetime JP2707335B2 (en) | 1989-08-22 | 1989-08-22 | Ground pressure measurement method for rotating body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2707335B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012052926A (en) * | 2010-09-01 | 2012-03-15 | Yokohama Rubber Co Ltd:The | Tire performance measuring method and tire performance measuring device |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100336191B1 (en) * | 1999-11-17 | 2002-05-10 | 신형인 | Apparatus and method for auto-scanning contact force in bead force measuring test |
| JP4719165B2 (en) * | 2007-02-05 | 2011-07-06 | 三菱重工業株式会社 | Brake device |
| JP5243166B2 (en) * | 2008-09-25 | 2013-07-24 | 株式会社ブリヂストン | Method for measuring friction energy of tire ground contact part |
-
1989
- 1989-08-22 JP JP1214129A patent/JP2707335B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012052926A (en) * | 2010-09-01 | 2012-03-15 | Yokohama Rubber Co Ltd:The | Tire performance measuring method and tire performance measuring device |
| KR101325087B1 (en) | 2010-09-01 | 2013-11-06 | 가부시키가이샤 고베 세이코쇼 | Method and apparatus for measuring tire performance |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0378636A (en) | 1991-04-03 |
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