JP5344885B2 - Wheel stiffness measuring device and wheel stiffness measuring method - Google Patents

Wheel stiffness measuring device and wheel stiffness measuring method Download PDF

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JP5344885B2
JP5344885B2 JP2008273738A JP2008273738A JP5344885B2 JP 5344885 B2 JP5344885 B2 JP 5344885B2 JP 2008273738 A JP2008273738 A JP 2008273738A JP 2008273738 A JP2008273738 A JP 2008273738A JP 5344885 B2 JP5344885 B2 JP 5344885B2
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wheel
load
measuring
measurement
measurement surface
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JP2010101761A (en
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尚哉 廣瀬
寿之 佐野
正樹 河合
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Topy Industries Ltd
IHI Inspection and Instrumentation Co Ltd
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Topy Industries Ltd
IHI Inspection and Instrumentation Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a wheel rigidity measuring instrument and a wheel rigidity measuring method. <P>SOLUTION: This wheel rigidity measuring instrument includes a seat table 16 for fixing the periphery of a wheel 4, a load arm 17 fixed on a hub face 12 of the wheel 4 so as to be located on an axis line of the wheel 4, a load generating means 18 for imposing a load on the wheel 4 by inclining the load arm 17, a target member 20 connected to an end of the load arm 17 on the wheel 4 side with its measurement surface 19 disposed so that it parallels a direction perpendicular to the axis of the wheel 4, and an inclination measuring means for the measurement surface 19. The inclination of the measurement surface 19 of the target member 20 is detected from the inclination of the measurement surface 19 and a distance measuring means 21 while the rigidity of the wheel 4 is measured from the inclination of the measurement surface 19 and the load of the load generating means 18. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

本発明は、ホイールの剛性について測定を行うホイール剛性測定装置及びホイール剛性の測定方法に関するものである。   The present invention relates to a wheel stiffness measuring apparatus and a wheel stiffness measuring method for measuring the stiffness of a wheel.

近年、車両用のホイールについて剛性を測定する際にはホイール剛性測定装置を用いている。   In recent years, when measuring the rigidity of a vehicle wheel, a wheel rigidity measuring device is used.

ホイール剛性測定装置は、図８に示す如く、床面１に配置された立体状のフレーム２と、フレーム２に配置されるロッド状の負荷アーム３とを備えている。フレーム２は、上面に、ホイール４を固定するクリップ等の固定手段（図示せず）を配した台座面５を形成している。また負荷アーム３は、台座面５に形成された通過孔６を介して配置され、上端に水平な固定面７を形成する固定部８を備えると共に、下端にはジャッキ等の荷重発生手段（図示せず）と、負荷アーム３の傾斜を測定するダイヤルゲージ９とを備えている。   As shown in FIG. 8, the wheel stiffness measuring device includes a three-dimensional frame 2 disposed on the floor surface 1 and a rod-shaped load arm 3 disposed on the frame 2. The frame 2 forms a pedestal surface 5 on the upper surface of which a fixing means (not shown) such as a clip for fixing the wheel 4 is arranged. The load arm 3 is disposed through a passage hole 6 formed in the pedestal surface 5 and includes a fixing portion 8 that forms a horizontal fixing surface 7 at the upper end, and a load generating means such as a jack at the lower end (see FIG. (Not shown) and a dial gauge 9 for measuring the inclination of the load arm 3.

一方、ホイール４は、タイヤ（図示せず）を装着するリム１０と、円盤状のディスク１１とを備えて構成されており、ディスク１１の中央には、車両のハブ（図示せず）に取付けるハブ面１２が備えられ、ハブ面１２には、車両のハブとボルト締結し得るボルト穴（図示せず）と、ホイール４の軸心に位置するハブ穴１３とが形成されている。   On the other hand, the wheel 4 includes a rim 10 on which a tire (not shown) is mounted and a disk-like disk 11, and is attached to a hub (not shown) of the vehicle at the center of the disk 11. A hub surface 12 is provided, and a bolt hole (not shown) that can be bolted to the hub of the vehicle and a hub hole 13 that is positioned at the axis of the wheel 4 are formed in the hub surface 12.

ホイール４の剛性を計測する際には、準備段階で、ホイール４を車両に取付けたとき車両側になる面を下面に向けるようにホイール４を載置し、ホイール４のリム１０の周囲側端部を固定手段で固定し、次に、ホイール４のハブ面１２に下方側から負荷アーム３の固定面７を接触させてハブ面１２のボルト孔（図示せず）を介してボルト１２ａにより締結し、計測段階へ移行する。計測段階では、荷重発生手段により負荷アーム３を傾けてホイール４に負荷荷重をかけると同時に、ダイヤルゲージ９で負荷アーム３の傾斜を計測し、負荷アーム３の傾斜をホイール４のハブ面１２の傾斜変動と推定し、ホイール４を１ｒａｄねじるために必要な力としてホイール４の剛性（Ｎ・ｍ／ｒａｄ）を算出するようにしている。   When measuring the rigidity of the wheel 4, in the preparation stage, the wheel 4 is placed so that the surface that becomes the vehicle side when the wheel 4 is attached to the vehicle is directed to the lower surface. Next, the fixing surface 7 of the load arm 3 is brought into contact with the hub surface 12 of the wheel 4 from below and is fastened by a bolt 12a through a bolt hole (not shown) of the hub surface 12. And move to the measurement stage. At the measurement stage, the load arm 3 is tilted by the load generating means to apply a load to the wheel 4, and at the same time, the inclination of the load arm 3 is measured by the dial gauge 9, and the inclination of the load arm 3 is measured on the hub surface 12 of the wheel 4. Inclination fluctuation is estimated, and the rigidity (N · m / rad) of the wheel 4 is calculated as a force necessary to twist the wheel 4 by 1 rad.

ここで負荷アーム３はホイール４へ負荷荷重をかける際に負荷アーム３自身に撓みを生じるため、撓み分の誤差を解消するように負荷アーム３の材質を考慮して材料計算によりホイール４の剛性を補正するようにしている。   Here, since the load arm 3 is bent when the load load is applied to the wheel 4, the rigidity of the wheel 4 is calculated by material calculation in consideration of the material of the load arm 3 so as to eliminate the error of the deflection. I am trying to correct.

なおホイール４の剛性を測定する装置や方法としては、下記の先行技術文献が存在している。
特開２００４−１０９１３２号公報 The following prior art documents exist as devices and methods for measuring the rigidity of the wheel 4.
JP 2004-109132 A

しかしながら、ホイール４はディスク１１に様々な意匠が形成されているため、意匠の種類によってはホイール４のねじれ方向が異なり、負荷荷重の作用方向と負荷アーム３の傾斜方向とがズレて、ホイール４の剛性の測定に誤差を生じるという問題があった。また、負荷アーム３の撓みを含まないように測定し、測定の正確さを向上させることが求められていた。   However, since the wheel 4 has various designs formed on the disk 11, the twisting direction of the wheel 4 differs depending on the type of the design, and the direction in which the load load acts and the direction in which the load arm 3 tilts are misaligned. There was a problem that an error was caused in the measurement of the rigidity of the. Moreover, it was calculated | required to measure so that the bending of the load arm 3 might not be included and to improve the accuracy of a measurement.

本発明は上述の実情に鑑みてなしたもので、ホイールのねじれによる負荷荷重の作用方向と負荷アームの傾斜方向のズレに伴う誤差を低減すると共に、負荷アームの撓みを含まないように測定して測定の正確さを向上させるホイール剛性測定装置及びホイール剛性の測定方法を提供することを目的としている。   The present invention has been made in view of the above-mentioned circumstances, and is measured so as to reduce an error caused by a deviation between a load load acting direction and a load arm inclination direction due to a twist of a wheel and not including a load arm deflection. It is an object of the present invention to provide a wheel stiffness measuring device and a wheel stiffness measuring method that improve measurement accuracy.

本発明のホイール剛性測定装置は、ホイールの周囲を固定する台座テーブルと、固定面を形成する固定部を備え前記ホイールの軸線上に位置するようにホイールのハブ面に該固定面を接触させて固定される負荷アームと、該負荷アームを傾けてホイールに負荷荷重をかける荷重発生手段と、前記負荷アームのホイール側先端に接続されてホイールの軸と垂直の方向に沿うように形成された測定面を有する測定体を配するターゲット部材と、前記負荷アームと前記測定体との間には前記ホイールのハブ穴に挿通し得るピンと、前記測定面の傾斜計測手段とを備え、
前記測定面の傾斜と荷重発生手段の負荷荷重とからホイールの剛性を測定するように構成されたことを特徴とするものである。 The wheel stiffness measuring device of the present invention includes a pedestal table for fixing the periphery of the wheel and a fixing portion for forming a fixing surface, and the fixing surface is brought into contact with the hub surface of the wheel so as to be positioned on the axis of the wheel. a load arm which is fixed, the load generation means for applying a load onto the wheel by tilting the load arm, the connected to the wheel side tip of the load arm measurements which are formed along the direction perpendicular to the axis of the wheel A target member for disposing a measuring body having a surface, a pin that can be inserted into the hub hole of the wheel between the load arm and the measuring body, and an inclination measuring means for the measuring surface,
The wheel rigidity is measured from the inclination of the measurement surface and the load applied by the load generating means.

本発明のホイール剛性測定装置において、ホイールのハブ穴に挿通して負荷アームとターゲット部材を接続し、ホイールのディスク面の隣接位置にターゲット部材の測定面を配置することが好ましい。   In the wheel stiffness measuring apparatus of the present invention, it is preferable that the load arm and the target member are connected through the hub hole of the wheel, and the measurement surface of the target member is disposed adjacent to the disk surface of the wheel.

本発明のホイール剛性測定装置において、傾斜計測手段は、前記ターゲット部材の前記測定面からの距離を測定する距離計測手段によるものであり、距離を計測するゲージが少なくとも２箇所以上の計測地点に配置されることが好ましい。   In the wheel stiffness measuring device of the present invention, the inclination measuring means is based on distance measuring means for measuring the distance of the target member from the measurement surface, and gauges for measuring the distance are disposed at at least two measurement points. It is preferred that

本発明のホイール剛性測定装置において、距離計測手段は、少なくとも２箇所の計測地点が、負荷荷重の作用方向に沿うように配置されることが好ましい。   In the wheel stiffness measuring device of the present invention, it is preferable that the distance measuring means is arranged so that at least two measurement points are along the acting direction of the load.

本発明のホイール剛性の測定方法は、ホイールの周囲を固定し且つホイールの軸心に、固定面を形成する固定部を備えた負荷アームを固定し、該負荷アームに、測定面を配したターゲット部材を接続するとともに、前記負荷アームと前記測定面との間にはホイールのハブ穴に挿通したピンを配置し、前記負荷アームを傾けてホイールに負荷荷重をかけ、ターゲット部材の測定面の傾斜を検出し、測定面の傾斜とホイールへの負荷荷重とからホイールの剛性を測定することを特徴とするものである。 The wheel rigidity measuring method of the present invention is a target in which a load arm having a fixing portion that forms a fixing surface is fixed to the wheel center and the measurement surface is arranged on the load arm. with connecting members, wherein between the load arm and the measuring surface is arranged a pin inserted through the hub hole of the wheel, applying a load onto wheel tilting the load arm, the inclination of the measuring surface of the target member And the rigidity of the wheel is measured from the inclination of the measurement surface and the load applied to the wheel.

上記した本発明によれば、負荷アームのホイール側先端に接続されて且つ測定面を配するターゲット部材を備え、負荷アームを傾けてホイールに負荷荷重をかけ、ターゲット部材の測定面の傾斜を検出し、測定面の傾斜と荷重発生手段の負荷荷重とからホイールの剛性を測定するので、ターゲット部材の測定面を基準とした測定を行うことができる。また、ターゲット部材は、測定面をホイールの軸と垂直の方向に沿うように配して、距離の測定方向を測定面へ向かう方向に変更すると共にハブ面の変移量を拡大するので、ホイールのねじれによる負荷荷重の作用方向と負荷アームの傾斜方向のズレに伴う誤差を低減することができる。更に、負荷アームに撓みを生じてもターゲット部材の測定面には影響を与えないので、負荷アームの撓みを含まないように測定することが可能となり、ホイールの剛性を測定する際に測定の正確さを向上させることができるという種々の優れた効果を奏し得る。   According to the present invention described above, the target member connected to the wheel-side tip of the load arm and provided with the measurement surface is provided, the load arm is inclined to apply a load load to the wheel, and the inclination of the measurement surface of the target member is detected. And since the rigidity of a wheel is measured from the inclination of a measurement surface and the load load of a load generation means, it can measure on the basis of the measurement surface of a target member. In addition, the target member is arranged so that the measurement surface is along the direction perpendicular to the wheel axis, and the distance measurement direction is changed to the direction toward the measurement surface and the shift amount of the hub surface is increased. It is possible to reduce an error due to a deviation between the acting direction of the load due to torsion and the inclination direction of the load arm. In addition, even if the load arm is bent, it does not affect the measurement surface of the target member. Therefore, it is possible to measure so as not to include the load arm's deflection. Various excellent effects of being able to improve the thickness can be obtained.

以下、本発明の実施例を添付図面を参照して説明する。   Embodiments of the present invention will be described below with reference to the accompanying drawings.

図１〜図６は本発明のホイール剛性測定装置及びホイール剛性の測定方法を実施する第１の形態例である。   FIGS. 1-6 is the 1st form example which implements the wheel rigidity measuring apparatus and wheel rigidity measuring method of this invention.

本発明のホイール剛性計測装置の第１の形態例は、図１〜図６に示す如く、床面１に底面１４及び脚部１５を介して配置した台座テーブル１６と、台座テーブル１６に配置されるロッド状の負荷アーム１７と、負荷アーム１７の下部に接続される荷重発生手段１８と、負荷アーム１７の上端に接続され且つ測定面１９を配するターゲット部材２０と、測定面１９の傾斜を測定する距離計測手段２１からなる傾斜計測手段と、荷重発生手段１８及び距離計測手段２１に接続されるＰＣ等の制御器２２とを備えている。   As shown in FIGS. 1 to 6, the first embodiment of the wheel stiffness measuring device of the present invention is disposed on a pedestal table 16 disposed on the floor surface 1 via a bottom surface 14 and legs 15, and the pedestal table 16. Rod-shaped load arm 17, load generating means 18 connected to the lower portion of load arm 17, target member 20 connected to the upper end of load arm 17 and having measurement surface 19 disposed thereon, and inclination of measurement surface 19 An inclination measuring means comprising a distance measuring means 21 to be measured and a controller 22 such as a PC connected to the load generating means 18 and the distance measuring means 21 are provided.

台座テーブル１６は、上面に、ホイール４を固定するクリップ等の固定手段（図示せず）を配した板状の台座部２３を備えており、台座部２３の中央部には所定径の通過孔２４を形成している。また台座部２３の両側には、上部フレーム部材２５と両側の側部フレーム部材２６とからなる門型フレーム２７が備えられ、ホイール４及びターゲット部材２０を跨ぐように配置されている。更に台座テーブル１６の台座部２３は、所定の厚みと剛性により荷重発生手段１８等の作動によるゆがみが生じないようになっている。ここで、ホイール４を固定する固定手段（図示せず）は、クリップに限定されるものでなく、台座テーブル１６に凹凸を形成してホイール４を固定しても良いし、また、他の挟み込む手段を備えて固定しても良い。また固定手段は、ホイール４のリム１０部分を固定するならば、リム１０のホイール軸方向内側の周囲端面を固定しても良いし、リム１０のホイール軸方向外側の周囲端面を固定しても良い。なお、ホイール４を車両に取付けたとき車両側となる側をホイール軸方向内側、その反対側をホイール軸方向外側とする。更に門型フレーム２７の上部フレーム部材２５は、負荷荷重の作用方向に沿うように配置されることが好ましい。   The pedestal table 16 includes a plate-like pedestal portion 23 provided with a fixing means (not shown) such as a clip for fixing the wheel 4 on the upper surface, and a passage hole having a predetermined diameter is formed at the center of the pedestal portion 23. 24 is formed. Further, on both sides of the pedestal portion 23, a portal frame 27 including an upper frame member 25 and side frame members 26 on both sides is provided, and is disposed so as to straddle the wheel 4 and the target member 20. Further, the pedestal portion 23 of the pedestal table 16 is prevented from being distorted by the operation of the load generating means 18 or the like due to a predetermined thickness and rigidity. Here, the fixing means (not shown) for fixing the wheel 4 is not limited to the clip, and the wheel 4 may be fixed by forming irregularities on the pedestal table 16, or other pinching is performed. Means may be provided and fixed. If the fixing means fixes the rim 10 portion of the wheel 4, the peripheral end surface on the inner side in the wheel axial direction of the rim 10 may be fixed, or the peripheral end surface on the outer side in the wheel axial direction of the rim 10 may be fixed. good. When the wheel 4 is attached to the vehicle, the side that becomes the vehicle side is the inside in the wheel axis direction, and the opposite side is the outside in the wheel axis direction. Furthermore, it is preferable that the upper frame member 25 of the portal frame 27 is disposed so as to follow the acting direction of the load.

負荷アーム１７は、台座部２３に形成された通過孔２４を介して配置されており、負荷アーム１７の上端には水平な固定面２８を形成する円盤状の固定部２９が備えられている。固定部２９の中心位置には中心取付孔３０（図２参照）が形成されると共に、中心取付孔３０の周囲には、ホイール４のハブ面１２のボルト孔（図示せず）に対応する複数のボルト対応孔（図示せず）が形成されている。また負荷アーム１７の下部には荷重発生手段１８を接続し得る接続部３１が備えられている。ここで負荷アーム１７は、ホイール４に固定前に、下方に位置する支持部（図示せず）で支持されても良いし、荷重発生手段１８で支持されても良い。   The load arm 17 is disposed through a passage hole 24 formed in the pedestal portion 23, and a disc-shaped fixing portion 29 that forms a horizontal fixing surface 28 is provided at the upper end of the load arm 17. A center mounting hole 30 (see FIG. 2) is formed at the center position of the fixing portion 29, and a plurality of bolt holes (not shown) corresponding to the hub surface 12 of the wheel 4 are formed around the center mounting hole 30. Bolt corresponding holes (not shown) are formed. Further, a connecting portion 31 to which the load generating means 18 can be connected is provided below the load arm 17. Here, the load arm 17 may be supported by a support portion (not shown) positioned below or fixed by the load generating means 18 before being fixed to the wheel 4.

荷重発生手段１８は、進退動可能なロッド３２を配する負荷荷重シリンダ３３であって台座テーブル１６の脚部１５に固定されており、ロッド３２は、チェーンやロッド部材等の連結体３４によって負荷アーム１７の接続部３１に接続されている。またロッド３２の端側には、負荷荷重シリンダ３３から発生した負荷荷重を計測するロードセル３５が配置されている。   The load generating means 18 is a load load cylinder 33 for arranging a rod 32 that can move forward and backward, and is fixed to the leg portion 15 of the pedestal table 16. The rod 32 is loaded by a connecting body 34 such as a chain or a rod member. It is connected to the connection part 31 of the arm 17. A load cell 35 for measuring the load generated from the load cylinder 33 is disposed on the end side of the rod 32.

ターゲット部材２０は、ホイール４のハブ穴１３に挿通し得るピン３６と、ピン３６の上端に形成されて所定径の測定面１９を有する円盤状の測定体３７とを備えて構成されている。ピン３６の下端には挿入突起部３８が備えられており、負荷アーム１７の固定面２８に形成された中心取付孔３０に挿入して固定し得るようになっている。ここでターゲット部材２０は測定面１９の測定体３７のみからなり、負荷アーム１７に、ホイール４のハブ穴１３に挿通し得るピンを備えても良い。また負荷アーム１７に挿入突起部を備えると共にターゲット部材２０に取付孔を形成して負荷アーム１７とターゲット部材２０とを固定しても良い。更にターゲット部材２０と負荷アーム１７とは、接続構造を特に制限するものではなく、ホイール４のハブ穴１３を介してターゲット部材２０と負荷アーム１７とを固定し得るならば、ネジ溝による結合、嵌入による結合、磁石による結合等のどのような結合でも良い。また、ターゲット部材２０の測定面（ターゲット）１９は負荷アーム１７だけでなく、ホイール４のハブ面１２と同じ変形をする。ターゲット部材２０を固定する部位は、ホイール固定ボルトやディスク１１に固定しても良い。またホイール４のディスク１１等で上記同じ変形をする部位に本計測が可能な平面があれば、当該平面を直接測定面（ターゲット）として測定しても良い。   The target member 20 includes a pin 36 that can be inserted into the hub hole 13 of the wheel 4, and a disk-shaped measurement body 37 that is formed at the upper end of the pin 36 and has a measurement surface 19 having a predetermined diameter. An insertion protrusion 38 is provided at the lower end of the pin 36 so that the pin 36 can be inserted and fixed in a center mounting hole 30 formed in the fixing surface 28 of the load arm 17. Here, the target member 20 may be composed of only the measurement body 37 of the measurement surface 19, and the load arm 17 may be provided with a pin that can be inserted into the hub hole 13 of the wheel 4. In addition, the load arm 17 may be provided with an insertion protrusion and an attachment hole may be formed in the target member 20 to fix the load arm 17 and the target member 20. Further, the connection structure between the target member 20 and the load arm 17 is not particularly limited. If the target member 20 and the load arm 17 can be fixed via the hub hole 13 of the wheel 4, the connection by a screw groove, Any coupling such as coupling by insertion or coupling by magnets may be used. Further, the measurement surface (target) 19 of the target member 20 is deformed not only in the load arm 17 but also in the hub surface 12 of the wheel 4. The portion for fixing the target member 20 may be fixed to a wheel fixing bolt or the disk 11. In addition, if there is a plane that can perform the main measurement at the same deformation site as the disk 11 of the wheel 4, the plane may be directly measured as a measurement surface (target).

距離計測手段（傾斜計測手段）２１は、距離を測定するゲージとして、測定面１９に接触して距離を計測するダイヤルゲージ等の接触ゲージ、及び／又は測定面１９に非接触で距離を計測するレーザ距離計等の非接触ゲージを備えており、接触ゲージ及び／又は非接触ゲージは門型フレーム２７の上部フレーム部材２５に固定され、少なくとも２箇所以上の計測地点に配置されるようになっている（図５では非接触ゲージが２箇所に配置されている）。また距離計測手段２１は、少なくとも２箇所の計測地点が、負荷荷重の作用方向に沿うように測定面１９の両側に配置されている。   The distance measuring means (tilt measuring means) 21 measures a distance without contact with the measurement surface 19 and / or a contact gauge such as a dial gauge that measures the distance by contacting the measurement surface 19 as a gauge for measuring the distance. A non-contact gauge such as a laser distance meter is provided, and the contact gauge and / or the non-contact gauge is fixed to the upper frame member 25 of the portal frame 27 and is arranged at at least two measurement points. (Non-contact gauges are arranged in two places in FIG. 5). Moreover, the distance measurement means 21 is arrange | positioned at the both sides of the measurement surface 19 so that at least 2 measurement points may follow the action direction of a load load.

図７に本発明の第２の形態例を示す。第２の形態例では、測定面１９の傾斜を計測する手段として距離計測手段２１に代えて、オートコリメーターなどの角度計測手段４１を備えている。また、測定面１９は小さくても良いため、ハブ穴１３より小さくすることが可能であり、ホイール４のハブ面１２と固定部２９との間にターゲット部材２０をはさんで取付けることができ、別の測定対象のホイール４を測定する場合も固定したままで良い。   FIG. 7 shows a second embodiment of the present invention. In the second embodiment, an angle measuring means 41 such as an autocollimator is provided instead of the distance measuring means 21 as a means for measuring the inclination of the measuring surface 19. Further, since the measurement surface 19 may be small, it can be made smaller than the hub hole 13, and the target member 20 can be attached between the hub surface 12 of the wheel 4 and the fixing portion 29. Even when measuring another wheel 4 to be measured, it may remain fixed.

制御器２２は、荷重発生手段１８のロードセル３５から信号ライン３５ａを介して信号データを受けると共に、距離計測手段２１から信号ライン２１ａ及びセンサーアンプ３９を介して信号データを受けるようになっている。更に制御器２２は荷重発生手段１８に駆動指令を出すように制御ライン（図示せず）を備えても良い。   The controller 22 receives signal data from the load cell 35 of the load generating means 18 via the signal line 35 a and receives signal data from the distance measuring means 21 via the signal line 21 a and the sensor amplifier 39. Further, the controller 22 may be provided with a control line (not shown) so as to issue a drive command to the load generating means 18.

以下本発明を実施する形態例の作用を説明する。   The operation of the embodiment for carrying out the present invention will be described below.

ホイール４の剛性を測定する際には、最初に準備段階としてホイール４を測定可能な状態に配置する。具体的には、ホイール４の軸方向外側を上面に向けるようにホイール４を台座テーブル１６の台座部２３に載置し、ホイール４のリム１０の周囲側端部をクリップ等の固定手段により固定する。またホイール４のハブ面１２に下方側から負荷アーム１７の固定面２８を接触させてハブ面１２のボルト孔（図示せず）を介してボルト１２ａにより締結して固定する（ステップＳ１）。ここで、ホイール４の周囲の固定と負荷アーム１７の固定とはどちらが先でも良いし、同時に行っても良い。   When measuring the rigidity of the wheel 4, the wheel 4 is first placed in a state where it can be measured as a preparation stage. Specifically, the wheel 4 is placed on the pedestal portion 23 of the pedestal table 16 so that the outer side in the axial direction of the wheel 4 faces the upper surface, and the peripheral end of the rim 10 of the wheel 4 is fixed by a fixing means such as a clip. To do. Further, the fixing surface 28 of the load arm 17 is brought into contact with the hub surface 12 of the wheel 4 from below, and is fastened and fixed by bolts 12a through bolt holes (not shown) of the hub surface 12 (step S1). Here, either the fixing of the periphery of the wheel 4 or the fixing of the load arm 17 may be performed first or simultaneously.

次に、ホイール４のハブ穴１３を介してターゲット部材２０と負荷アーム１７とを接続して固定し、ターゲット部材２０の測定面１９をホイール４のディスク１１の上方隣接位置に配置して準備段階を完了する（ステップＳ２）。ここで、ターゲット部材２０は、測定面１９をディスク１１のハブ面１２に近接し且つホイール４の軸と垂直の方向に配置することにより、距離の測定方向を負荷アーム１７の傾斜方向（ホイール４の軸と垂直の方向）から測定面１９へ向かう方向（ホイール４の軸方向）に変更すると共に、ハブ面１２の変移量を拡大している。また、ターゲット部材２０にピン３６を備える場合には、ターゲット部材２０のピン３６をホイールのハブ穴１３に挿通してターゲット部材２０と負荷アーム１７を接続しており、負荷アーム１７にピンを備える場合には、負荷アーム１７のピン３６をホイールのハブ穴１３に挿通してターゲット部材２０と負荷アーム１７を接続している。   Next, the target member 20 and the load arm 17 are connected and fixed via the hub hole 13 of the wheel 4, and the measurement surface 19 of the target member 20 is arranged at an upper adjacent position of the disk 11 of the wheel 4 to prepare. Is completed (step S2). Here, the target member 20 is arranged so that the measurement surface 19 is close to the hub surface 12 of the disk 11 and perpendicular to the axis of the wheel 4, so that the distance measurement direction is the inclination direction of the load arm 17 (the wheel 4 The direction of the movement of the hub surface 12 is increased as well as the direction toward the measurement surface 19 (the axial direction of the wheel 4). When the target member 20 includes the pin 36, the target member 20 and the load arm 17 are connected by inserting the pin 36 of the target member 20 into the hub hole 13 of the wheel, and the load arm 17 includes the pin. In this case, the pin 36 of the load arm 17 is inserted into the hub hole 13 of the wheel to connect the target member 20 and the load arm 17.

続いて測定段階としてホイール剛性の計測を開始する際には、距離計測手段２１と荷重発生手段１８のロードセル３５から制御器２２へ信号データを送る状態にし、距離計測手段２１によりターゲット部材２０の測定面１９に対して距離の測定を開始する（ステップＳ３）。ここで、距離計測手段２１がダイヤルゲージ等の接触ゲージの場合には、ダイヤルゲージの接触面をターゲット部材２０の測定面１９に接触させて測定面１９の変動距離を計測可能な状態にし、距離計測手段２１がレーザ距離計等の非接触ゲージの場合には、非接触で測定面１９の変動距離を計測可能な状態にする。   Subsequently, when the measurement of the wheel stiffness is started as a measurement step, signal data is sent from the load cell 35 of the distance measuring means 21 and the load generating means 18 to the controller 22, and the target member 20 is measured by the distance measuring means 21. Measurement of the distance with respect to the surface 19 is started (step S3). Here, when the distance measuring means 21 is a contact gauge such as a dial gauge, the contact surface of the dial gauge is brought into contact with the measurement surface 19 of the target member 20 so that the variation distance of the measurement surface 19 can be measured. When the measuring means 21 is a non-contact gauge such as a laser distance meter, it is in a state in which the variable distance of the measurement surface 19 can be measured without contact.

次に荷重発生手段１８により負荷アーム１７を傾動させて固定面２８からホイール４のハブ面１２に負荷荷重をかけ、ホイール４にねじれを発生させる（ステップＳ４）。   Next, the load generating means 18 tilts the load arm 17 to apply a load load from the fixed surface 28 to the hub surface 12 of the wheel 4 to cause the wheel 4 to twist (step S4).

この時、ターゲット部材２０の測定面１９は、ホイール４のねじれの発生場所であるハブ面１２に近接してハブ面１２の変化に追従しており、距離計測手段２１は、ターゲット部材２０の測定面１９からの距離を測定し、距離変化により測定面１９の傾きを連続的に算出する（ステップＳ５）。ここで、ホイール４のねじれにより負荷荷重の作用方向と負荷アーム１７の傾斜方向のズレによる誤差がある場合であっても、ターゲット部材２０が、距離の測定方向を測定面１９へ向かう方向（ホイール４の軸方向）にすると共にハブ面１２の変移量を拡大することにより、ホイール４のねじれの誤差を低減する。また負荷アーム１７に撓みを生じても、荷重発生手段１８の負荷荷重は固定面２８からハブ面１２に全て伝わると共に、ターゲット部材２０は、負荷アーム１７の撓みの影響を受けることがない。更に距離計測手段２１は、負荷荷重の方向に沿ってターゲット部材２０の測定面１９の少なくとも２点で計測することにより、測定面１９の上下の変動を検出して負荷荷重の方向に沿うターゲット部材２０の測定面１９の傾斜を適切に算出する。   At this time, the measurement surface 19 of the target member 20 follows the change of the hub surface 12 close to the hub surface 12 where the twist of the wheel 4 occurs, and the distance measuring means 21 measures the target member 20. The distance from the surface 19 is measured, and the inclination of the measurement surface 19 is continuously calculated from the distance change (step S5). Here, even when there is an error due to a deviation between the acting direction of the load and the inclination direction of the load arm 17 due to the twist of the wheel 4, the target member 20 moves the distance measurement direction toward the measurement surface 19 (wheel 4 axial direction) and the displacement amount of the hub surface 12 is increased to reduce the twisting error of the wheel 4. Even if the load arm 17 is bent, the load load of the load generating means 18 is all transmitted from the fixed surface 28 to the hub surface 12 and the target member 20 is not affected by the deflection of the load arm 17. Further, the distance measuring means 21 measures at least two points on the measurement surface 19 of the target member 20 along the direction of the load load, thereby detecting the vertical fluctuation of the measurement surface 19 and along the direction of the load load. The inclination of the 20 measurement surfaces 19 is appropriately calculated.

そしてターゲット部材２０の測定面１９の傾斜を測定した際には、距離計測手段２１からの信号データをセンサーアンプ３９を介して制御器２２に送ると共に、その時の荷重発生手段１８のロードセル３５からの信号データを制御器２２に送り、距離計測手段２１によるターゲット部材２０の測定面１９の傾きと、荷重発生手段１８による負荷荷重とから、ホイール４を１ｒａｄねじるために必要な力としてホイール４の剛性（Ｎ・ｍ／ｒａｄ）を算出する（ステップＳ６）。   When the inclination of the measurement surface 19 of the target member 20 is measured, signal data from the distance measuring means 21 is sent to the controller 22 via the sensor amplifier 39, and the load generating means 18 at that time from the load cell 35 is sent. The signal data is sent to the controller 22, and the rigidity of the wheel 4 as a force required to twist the wheel 4 by 1 rad from the inclination of the measurement surface 19 of the target member 20 by the distance measuring unit 21 and the load applied by the load generating unit 18. (N · m / rad) is calculated (step S6).

而して、このように実施の形態例によれば、負荷アーム１７のホイール４側先端の固定面２８に接続されて且つ測定面１９を配するターゲット部材２０を備え、負荷アーム１７を傾けてホイール４に負荷荷重をかけ、ターゲット部材２０の測定面１９からの距離を測定してターゲット部材２０の測定面１９の傾斜を検出し、測定面１９の傾斜と荷重発生手段１８の負荷荷重とからホイール４の剛性を測定するので、固定面２８を基準とした測定を行うことができる。また、ターゲット部材２０は、測定面１９をホイール４の軸と垂直の方向に沿うように配して、距離の測定方向を負荷アーム１７の傾斜方向（ホイール４の軸と垂直の方向）から測定面１９へ向かう方向（ホイール４の軸方向）に変更すると共に、ハブ面１２の変移量を拡大するので、ホイール４のねじれによる負荷荷重の作用方向と負荷アーム１７の傾斜方向のズレに伴う誤差を低減することができる。更に、負荷アーム１７に撓みを生じてもターゲット部材２０の測定面１９には影響を与えないので、負荷アーム１７の撓みを含まないように測定することが可能となり、ホイール４の剛性を測定する際に測定の正確さを向上させることができる。   Thus, according to the embodiment as described above, the load member 17 is provided with the target member 20 connected to the fixed surface 28 at the tip of the wheel 4 side and disposed on the measurement surface 19, and the load arm 17 is tilted. A load is applied to the wheel 4, the distance from the measurement surface 19 of the target member 20 is measured to detect the inclination of the measurement surface 19 of the target member 20, and the inclination of the measurement surface 19 and the load load of the load generating means 18 are detected. Since the rigidity of the wheel 4 is measured, the measurement based on the fixed surface 28 can be performed. In addition, the target member 20 is arranged so that the measurement surface 19 extends along the direction perpendicular to the axis of the wheel 4, and the distance measurement direction is measured from the inclination direction of the load arm 17 (direction perpendicular to the axis of the wheel 4). Since the distance to the surface 19 (the axial direction of the wheel 4) is changed and the shift amount of the hub surface 12 is enlarged, an error caused by a deviation between the acting direction of the load load due to the twist of the wheel 4 and the inclination direction of the load arm 17 Can be reduced. Further, even if the load arm 17 is bent, the measurement surface 19 of the target member 20 is not affected. Therefore, the load arm 17 can be measured so as not to be bent, and the rigidity of the wheel 4 is measured. The accuracy of the measurement can be improved.

実施の形態例において、ホイール４のハブ穴１３を挿通して負荷アーム１７とターゲット部材２０を接続し、ホイール４のディスク１１面の隣接位置にターゲット部材２０の測定面１９を配置すると、ターゲット部材２０の測定面１９を、ディスク１１面のハブ面１２に近接し且つホイール４の軸と垂直の方向に配置し、距離計測手段２１による距離の測定方向を容易に変更すると共にハブ面１２の変移量を好適に拡大するので、ホイール４のねじれにより負荷荷重の作用方向と負荷アーム１７の傾斜方向のズレに伴う誤差を大幅に低減することができる。   In the embodiment, when the load arm 17 and the target member 20 are connected through the hub hole 13 of the wheel 4 and the measurement surface 19 of the target member 20 is disposed adjacent to the disk 11 surface of the wheel 4, the target member The measurement surface 19 of 20 is arranged in the direction close to the hub surface 12 of the disk 11 and perpendicular to the axis of the wheel 4 to easily change the distance measuring direction by the distance measuring means 21 and to change the hub surface 12. Since the amount is suitably enlarged, the error caused by the deviation between the acting direction of the load and the inclination direction of the load arm 17 due to the twist of the wheel 4 can be greatly reduced.

実施の形態例において、傾斜計測手段は、ターゲット部材２０の測定面１９からの距離を測定する距離計測手段２１によるものであり、距離を計測するゲージが少なくとも２箇所以上の計測地点に配置されると、固定面２８を基準にしてハブ面１２の傾斜を適切に測定し、結果的に負荷荷重の作用方向と負荷アーム１７の傾斜方向のズレによる誤差を好適に低減すると共に、負荷アーム１７の撓みを含まないように測定して測定の正確さを向上させることができる。また測定面１９の周方向に沿って３箇所以上配置されると、測定面１９の傾斜を好適に測定することができる。   In the embodiment, the inclination measurement means is based on the distance measurement means 21 that measures the distance from the measurement surface 19 of the target member 20, and gauges that measure the distance are arranged at at least two measurement points. Then, the inclination of the hub surface 12 is appropriately measured with reference to the fixed surface 28. As a result, an error due to a deviation between the applied direction of the load load and the inclination direction of the load arm 17 is preferably reduced, and the load arm 17 Measurements can be made to include no deflection to improve measurement accuracy. Further, when three or more locations are arranged along the circumferential direction of the measurement surface 19, the inclination of the measurement surface 19 can be suitably measured.

実施の形態例において、距離計測手段２１は、少なくとも２箇所の計測地点が、負荷荷重の作用方向に沿うように測定面１９の両側に配置されると、距離計測手段２１による距離のハブ面１２の変移量を拡大して測定面１９の傾斜を好適に測定し、結果的に負荷荷重の作用方向と負荷アーム１７の傾斜方向のズレによる誤差を好適に低減すると共に、負荷アーム１７の撓みを含まないように測定して測定の正確さを向上させることができる。   In the embodiment, the distance measuring means 21 is configured such that when at least two measurement points are arranged on both sides of the measuring surface 19 so as to be along the direction of the applied load, the distance measurement means 21 distances the hub surface 12. The inclination of the measuring surface 19 is preferably measured by increasing the amount of displacement of the load, and as a result, an error due to a deviation between the acting direction of the load load and the inclination direction of the load arm 17 is preferably reduced, and the deflection of the load arm 17 is reduced. The measurement accuracy can be improved by measuring so as not to include it.

実施の形態例において、荷重発生手段１８は、負荷アーム１７を傾ける負荷荷重シリンダ３３と、負荷荷重シリンダ３３の負荷荷重を計測するロードセル３５とを備えると、ホイール４のハブ面１２に作用する負荷荷重を適切に測定し、結果的に負荷荷重の作用方向と負荷アーム１７の傾斜方向のズレによる誤差を好適に低減すると共に、負荷アーム１７の撓みを含まないように測定して測定の正確さを向上させることができる。   In the embodiment, when the load generating means 18 includes a load load cylinder 33 that tilts the load arm 17 and a load cell 35 that measures the load load of the load load cylinder 33, the load acting on the hub surface 12 of the wheel 4. The load is appropriately measured, and as a result, the error due to the deviation between the acting direction of the load load and the inclination direction of the load arm 17 is preferably reduced, and the measurement is performed so as not to include the deflection of the load arm 17 to accurately measure the load. Can be improved.

尚、本発明のホイール剛性測定装置及びホイール剛性の測定方法は、上述の形態例にのみ限定されるものではなく、本発明の要旨を逸脱しない範囲内において種々変更を加え得ることは勿論である。   The wheel stiffness measuring device and the wheel stiffness measuring method of the present invention are not limited to the above-described embodiments, and various changes can be made without departing from the scope of the present invention. .

本発明を実施する第１の形態例を示す概念図である。It is a conceptual diagram which shows the 1st example of an embodiment which implements this invention. 本発明を実施する前の状態を示す概念図である。It is a conceptual diagram which shows the state before implementing this invention. ホイール及び負荷アームを固定した状態を示す概念図である。It is a conceptual diagram which shows the state which fixed the wheel and the load arm. ターゲット部材を固定した状態を示す概念図である。It is a conceptual diagram which shows the state which fixed the target member. 本発明を実施する形態例を示す平面図である。It is a top view which shows the example of an embodiment which implements this invention. 本発明を実施する手順を示すフローである。It is a flow which shows the procedure which implements this invention. 本発明を実施する第２の形態例を示す概念図である。It is a conceptual diagram which shows the 2nd example which implements this invention. 従来のホイール剛性測定装置を示す概念図である。It is a conceptual diagram which shows the conventional wheel rigidity measuring apparatus.

符号の説明Explanation of symbols

４ ホイール
１０ リム
１１ ディスク
１２ ハブ面
１３ ハブ穴
１６ 台座テーブル
１７ 負荷アーム
１８ 荷重発生手段
１９ 測定面
２０ ターゲット部材
２１ 距離計測手段
２８ 固定面
２９ 固定部
３６ ピン
３７ 測定体
４１ 角度計測手段 4 Wheel 10 Rim 11 Disc 12 Hub surface 13 Hub hole 16 Base table 17 Load arm 18 Load generating means 19 Measuring surface 20 Target member 21 Distance measuring means
28 fixed surface
29 fixed part
36 pins
37 measuring body 41 angle measuring means

Claims (5)

ホイールの周囲を固定する台座テーブルと、固定面を形成する固定部を備え前記ホイールの軸線上に位置するようにホイールのハブ面に該固定面を接触させて固定される負荷アームと、該負荷アームを傾けてホイールに負荷荷重をかける荷重発生手段と、前記負荷アームのホイール側先端に接続されてホイールの軸と垂直の方向に沿うように形成された測定面を有する測定体を配するターゲット部材と、前記負荷アームと前記測定体との間には前記ホイールのハブ穴に挿通し得るピンと、前記測定面の傾斜計測手段とを備え、
前記測定面の傾斜と荷重発生手段の負荷荷重とからホイールの剛性を測定するように構成されたことを特徴とするホイール剛性測定装置。 A pedestal table that fixes the periphery of the wheel, a load arm that includes a fixing portion that forms a fixing surface and is fixed by contacting the fixing surface with the hub surface of the wheel so as to be positioned on the axis of the wheel; A target for providing a load generating means for applying a load to the wheel by inclining the arm, and a measuring body connected to the wheel side tip of the load arm and having a measurement surface formed along the direction perpendicular to the wheel axis A member, a pin that can be inserted into the hub hole of the wheel between the load arm and the measuring body, and a tilt measuring means of the measurement surface,
A wheel stiffness measuring device configured to measure a stiffness of a wheel from an inclination of the measurement surface and a load applied by a load generating means. ホイールのハブ穴に挿通して負荷アームとターゲット部材を接続し、ホイールのディスクの隣接位置にターゲット部材の測定面を配置したことを特徴とする請求項１に記載のホイール剛性測定装置。   The wheel rigidity measuring device according to claim 1, wherein the load arm and the target member are connected through a hub hole of the wheel, and a measurement surface of the target member is arranged at a position adjacent to the disk of the wheel. 傾斜計測手段は、前記ターゲット部材の前記測定面からの距離を測定する距離計測手段によるものであり、距離を計測するゲージが少なくとも２箇所以上の計測地点に配置されたことを特徴とする請求項１または２に記載のホイール剛性測定装置。   The inclination measuring means is based on distance measuring means for measuring a distance of the target member from the measurement surface, and gauges for measuring the distance are arranged at at least two measurement points. The wheel stiffness measuring device according to 1 or 2. 距離計測手段は、少なくとも２箇所の計測地点が、負荷荷重の作用方向に沿うように配置されたことを特徴とする請求項１〜３のいずれかに記載のホイール剛性測定装置。   The wheel stiffness measuring device according to any one of claims 1 to 3, wherein the distance measuring means is arranged so that at least two measurement points are along the direction of the applied load. ホイールの周囲を固定し且つホイールの軸心に、固定面を形成する固定部を備えた負荷アームを固定し、該負荷アームに、測定面を配したターゲット部材を接続するとともに、前記負荷アームと前記測定面との間にはホイールのハブ穴に挿通したピンを配置し、前記負荷アームを傾けてホイールに負荷荷重をかけ、ターゲット部材の測定面の傾斜を検出し、測定面の傾斜とホイールへの負荷荷重とからホイールの剛性を測定することを特徴するホイール剛性の測定方法。 A load arm having a fixing portion that forms a fixing surface is fixed to the wheel center and the wheel arm is fixed to the wheel center , and a target member having a measurement surface is connected to the load arm. A pin inserted through the hub hole of the wheel is arranged between the measurement surface, the load arm is tilted to apply a load to the wheel, the inclination of the measurement surface of the target member is detected, the inclination of the measurement surface and the wheel A method for measuring wheel stiffness, comprising measuring the stiffness of a wheel from a load applied to the wheel.
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