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JP3827299B2 - Wear measurement jig - Google Patents
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JP3827299B2 - Wear measurement jig - Google Patents

Wear measurement jig Download PDF

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Publication number
JP3827299B2
JP3827299B2 JP2002088531A JP2002088531A JP3827299B2 JP 3827299 B2 JP3827299 B2 JP 3827299B2 JP 2002088531 A JP2002088531 A JP 2002088531A JP 2002088531 A JP2002088531 A JP 2002088531A JP 3827299 B2 JP3827299 B2 JP 3827299B2
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Japan
Prior art keywords
hub
wear
jig
mounting surface
wheel mounting
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 - Fee Related
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JP2002088531A
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Japanese (ja)
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JP2003287416A (en
Inventor
島 晴 夫 北
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UD Trucks Corp
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UD Trucks Corp
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Priority to JP2002088531A priority Critical patent/JP3827299B2/en
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Description

【0001】
【発明の属する技術分野】
本発明は、アクスルハブのディスクホイール取付面における摩耗量を計測するために用いられる摩耗計測用冶具に関する。
【0002】
【従来の技術】
図7及び図8に示すように、アクスルハブ10のハブフランジ部11におけるディスクホイール取付面12は、ハブボルト貫通孔13の図示しないピッチサークル円を含み、ハブボルト30の位置決め用フランジ31の直径以上の幅を有する円環状の溝14が形成されている。
【0003】
該溝14の機能は、ハブボルト30を弾性締め付けによってねじの緩みを防止するものである。
【0004】
一方、該溝14の内側の円環部12a、及び外側の円環部12b(前記ディスクホイール取付面12は、溝14の内側の円環部12a及び外側の円環部12bによって構成されている)は、ディスクホイール20から振動や衝撃を伴う作用力を受け、磨耗する。摩耗領域は符号Gで示す。
【0005】
しかし、ハブボルト30の周辺部近傍(図7においてNで示す領域)は、ディスクホイールの孔径より小さく接触が生じない範囲であり摩耗は生じない。
【0006】
摩耗領域Gにおける摩耗量を計測することは、安全性の面からも必要である。そのため、従来の技術では、前記ディスクホイール取付面12(12a、12b)における摩耗量を計測するため、種々の工夫を凝らしている。
【0007】
例えば、図7〜図9で示す様に、第1の方法として、
(1) アクスルからホイールナット40を取外す。
(2) 前記ハブのホイール取付け面12を図示しない手段によって清浄に払拭する。
(3) 少なくとも1面50aが正確に平面で矩形の、例えば定規50の該平面50aを、前記ホイール取付け面12に押し当て、該定規50の1辺50bを以って前記ホイール取付け面で、隣接する2本のハブボルト30間に橋渡し、前記1辺50bを当該2本のハブボルト30のフランジ部31に当接させる。
(4) 前記定規50の正確な平面50aとハブフランジ11の磨耗面との隙間Sを隙間ゲージで測定する。
という手法が存在する。
【0008】
或いは、第2の方法として(図示せず)、
(1) アクスルからハブを分解する。
(2) 分解したハブを定盤上にセットし、磨耗部をダイヤルゲージで測定する。
という手法も存在する。
【0009】
しかし、第1の方法は、測定治具である定規50を測定者が手で押さえている為、前記1辺50bと反対側、即ち隙間ゲージを挿入する側がハブフランジ11側、或いは、その反対側に倒れ込み、正確な測定が出来ない確率が高い。
即ち、非常に狭い領域に定規を上手く当てられないという問題が有る。
【0010】
第2の方法は、分解後の摩耗量計測は容易であるが、アクスルの分解と、定盤へのアクスルのセット等、重量物の揚げ降ろしを含み、大きな労力と時間を要する。
【0011】
【発明が解決しようとする課題】
本発明は、上述した従来技術の問題点に鑑みて提案されたものであり、ディスクホイールをアクスルハブから分解することなく、作業時間を短縮し、正確に摩耗量を測定することの出来る摩耗量測定用治具の提供を目的としている。
【0012】
【課題を解決するための手段】
本発明の摩耗計測用治具は、アクスルハブ(10)のディスクホイール取付面(12、12a、12b)における摩耗量を計測するのに用いられる摩耗計測用冶具(5、52、54)において、ハブボルト(30)が貫通可能な貫通孔(5c、52c、54c)が形成され、前記冶具(5、52、54)の前記ディスクホイール取付面(12、12a、12b)との接触面(5a、52a、54a)のレベルは、貫通したハブボルト(30)の先端にナット(40)を螺合して締め付けた場合におけるハブフランジ部(11)の摩耗していない領域(N)のレベルと同一となり、当該ディスクホイール取付面(12、12a、12b)との接触面(5a)のレベルとハブフランジ部(11)の摩耗した領域(G)のレベルとの差異が、アクスルハブ(10)のディスクホイール取付面(12、12a、12b)における摩耗量となる様に構成されている(請求項1:図1〜図6)。
【0013】
前記貫通孔(5c)は、前記冶具(5)に1つだけ形成されている(請求項2:図2〜4)。
【0014】
上述の構成を具備した本発明の摩耗量測定用治具によれば、タイヤを含むホイールをアクスルハブ(10)から外した後、当該治具(5)をハブボルト(30)に装着し、ホールナット(40)で固定し、形成された隙間(S)に図示しない隙間ゲージを挿入するだけで良く、当該治具(5)は手に持つ必要はなく、且つ、非摩耗面(12a、12b)に堅固に固定されるので、隙間(S)はぶれることなく正確に測定出来る。
構造が簡単であり、ハブボルト貫通孔(5c)が1箇所のタイプは、汎用性に富む。
【0015】
前記貫通孔(52c、54c)は、前記冶具(52、54)に複数形成されている(請求項3:図5、6)。
【0016】
ハブボルト貫通孔(52c)が2箇所のタイプ(52)は、アクスルハブへの固定点が2箇所となり、安定するのでより正確な測定データが得られる。
又、ハブボルト間全域に渡る測定が可能である。
【0017】
ハブボルト貫通孔(54c)が全箇所のタイプ(54)は、当該治具(54)のハブ(10)への取付けは1度で済む為、効率的に計測作業を進められる。
【0018】
【発明の実施の形態】
以下、添付図面を参照して、本発明の実施形態を説明する。
図1は、隙間測定時におけるハブボルト取付け部の構成を示す説明図である。図2〜図4は第1実施形態の摩耗量測定用治具の夫々、立体図、正面図、側断面図を示す。
【0019】
図1〜図4を参照して、摩耗量測定用治具5は直方体であり、ハブボルトの鍔部への乗り上げ防止として測定面5a側に溝幅がBの矩形断面の溝部5bが直方体の外側の互いに平行な2辺5fに平行に形成されている。
該摩耗量測定用治具5は図3に示すように、図示の上下(全幅W)方向において対称形であり、中央には図示しないハブボルトを貫通させるハブボルト貫通孔5cが穿孔されている。
又、前記測定面5aと反対の面5g側には図示せぬホイールナットの球面座と接触し、ホイールナットの球面座と相補の形状の凹部5eが形成されている。
【0020】
ここで、該摩耗量測定用治具5の溝幅Bは、前記測定面5aの範囲以内に、従来技術の説明において言及した、ディスクホイールと接触しない範囲、即ち摩耗を生じない範囲(N)を含む様な幅とする。
【0021】
そのような構成の第1実施形態の摩耗計測用治具5によれば、図1に示すように、タイヤを含む図示しないディスクホイールをハブフランジ部11から外した後、当該摩耗量測定用治具5をハブボルト30に装着し、当該治具5を、ホールナット40で固定し、形成された隙間Sに図示しない隙間ゲージを挿入するだけで良く、計測治具5を手に持つ必要はなく、非摩耗面Nに堅固に固定されるので隙間Sはぶれることなく正確に測定出来る。
又、構造が簡単であり、汎用性に富む。
尚、図1において網掛けした領域Gは、摩耗した領域を示す。
【0022】
次に、図5および図6を参照して第2実施形態を説明する。
図5に示す第2実施形態の一例である摩耗量測定用治具52は図2〜図4の第1実施形態がハブボルト貫通孔5cは1箇所であったのに対して、2箇所としたものである。
【0023】
摩耗量測定用治具52を正面から見て全体の形状が扇形をしており、溝52bの幅B1、全幅W1は、図2〜図4の第1実施形態の溝5bの幅B、全幅Wに等しく、機能は同じである。
【0024】
そのような第2実施形態の一例によれば、作用効果は図2〜図4の第1実施形態と同様であることに加え、アクスルハブへの当該治具52の固定点が2箇所となり安定するので、より正確な測定データが得られる。又、ハブボルト間全域に渡る測定が可能である。
【0025】
更に、図6に示す第2実施形態の他の例である摩耗量測定用治具54は、図2〜図4の第1実施形態がハブボルト貫通孔5cが1箇所であったのに対して、ハブ側10の全ハブボルト貫通孔に対応するように全数の貫通孔54cを有する円環状としたものである。
溝54bの幅、全幅は第1実施形態の溝5bの幅B、全幅Wに等しい。
【0026】
そのような第2実施形態の他の例によれば、作用効果は図2〜図4の第1実施形態と同様であることに加え、当該治具54のハブへの取付けは1度で済む為、効率的に計測作業を進められる。
【0027】
図示の実施形態はあくまでも例示であり、本発明の技術的範囲を限定するものではないことを付記する。
例えば、アクスルフランジのディスクホイール取付け面に、図8で示した溝14が形成されていないアクスルにも本実施例は適応可能である。
【0028】
【発明の効果】
本発明の作用効果を、以下に記す。
(a) 当該治具をハブボルトに装着し、ホールナットで固定し、形成された隙間に隙間ゲージを挿入するだけで良く、当該治具は手に持つ必要はなく、且つ、非摩耗面に堅固に固定されるので、隙間はぶれることなく正確に測定出来る。
(b) 構造が簡単であり、ハブボルト貫通孔が1箇所のタイプは、汎用性に富む。
(c) ハブボルト貫通孔が2箇所のタイプは、アクスルハブへの固定点が2箇所となり、安定するのでより正確な測定データが得られる。又、ハブボルト間の全域に渡る測定が可能である。
(d) ハブボルト貫通孔が全箇所のタイプは、当該治具のハブへの取付けは1度で済む為、効率的に計測作業を進められる。
【図面の簡単な説明】
【図1】本発明の実施形態で、隙間測定時におけるハブボルト取付け部の構成図。
【図2】本発明の第1実施形態の摩耗量測定用治具の立体図。
【図3】本発明の第1実施形態の摩耗量測定用治具の正面図。
【図4】図3のX‐X断面図。
【図5】本発明の第2実施形態で摩耗量測定用治具の一例を示す正面図。
【図6】本発明の第2実施形態で摩耗量測定用治具の他の例を示す正面図。
【図7】アクスルハブのディスクホイール取付け面の摩耗の状態を示す側断面図。
【図8】従来技術での測定状況を示す正面図。
【図9】従来技術での測定状況を示す側断面図。
【符号の説明】
5・・・摩耗計測用治具
5a・・・測定面
5b・・・溝部
5c・・・ハブボルト貫通孔
10・・・アクスルハブ
11・・・ハブフランジ部
12・・・ディスクホイール取付け面
30・・・ハブボルト
40・・・ホイールナット
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a wear measuring jig used for measuring a wear amount on a disc wheel mounting surface of an axle hub.
[0002]
[Prior art]
As shown in FIGS. 7 and 8, the disc wheel mounting surface 12 in the hub flange portion 11 of the axle hub 10 includes a pitch circle circle (not shown) of the hub bolt through hole 13 and has a width equal to or larger than the diameter of the positioning flange 31 of the hub bolt 30. An annular groove 14 is formed.
[0003]
The function of the groove 14 is to prevent the screw from loosening by elastically tightening the hub bolt 30.
[0004]
On the other hand, the inner ring portion 12a and the outer ring portion 12b of the groove 14 (the disk wheel mounting surface 12 is constituted by the inner ring portion 12a and the outer ring portion 12b of the groove 14. ) Receives an acting force accompanied by vibration or impact from the disc wheel 20 and wears. The wear region is indicated by G.
[0005]
However, the vicinity of the peripheral portion of the hub bolt 30 (the region indicated by N in FIG. 7) is a range that is smaller than the hole diameter of the disc wheel and does not cause contact, and no wear occurs.
[0006]
Measuring the amount of wear in the wear region G is also necessary from the viewpoint of safety. Therefore, in the conventional technique, various measures are taken to measure the amount of wear on the disk wheel mounting surface 12 (12a, 12b).
[0007]
For example, as shown in FIGS. 7 to 9, as the first method,
(1) Remove the wheel nut 40 from the axle.
(2) The wheel mounting surface 12 of the hub is wiped clean by means not shown.
(3) At least one surface 50a is exactly flat and rectangular, for example, the flat surface 50a of the ruler 50 is pressed against the wheel mounting surface 12, and the one side 50b of the ruler 50 is used on the wheel mounting surface. Bridging between two adjacent hub bolts 30, the one side 50 b is brought into contact with the flange portion 31 of the two hub bolts 30.
(4) The clearance S between the accurate flat surface 50a of the ruler 50 and the worn surface of the hub flange 11 is measured with a clearance gauge.
There is a technique called.
[0008]
Alternatively, as a second method (not shown),
(1) Disassemble the hub from the axle.
(2) Set the disassembled hub on the surface plate and measure the worn part with a dial gauge.
There is also a technique.
[0009]
However, in the first method, since the measurer holds the ruler 50, which is a measuring jig, by hand, the side opposite to the one side 50b, that is, the side where the gap gauge is inserted is the hub flange 11 side or vice versa. There is a high probability that it will fall to the side and accurate measurement will not be possible.
That is, there is a problem that the ruler cannot be applied well to a very narrow area.
[0010]
The second method is easy to measure the amount of wear after disassembly, but requires heavy labor and time, including disassembling the axle and lifting and unloading heavy objects such as setting the axle on the surface plate.
[0011]
[Problems to be solved by the invention]
The present invention has been proposed in view of the above-described problems of the prior art, and it is possible to reduce the working time and accurately measure the wear amount without disassembling the disc wheel from the axle hub. The purpose is to provide jigs.
[0012]
[Means for Solving the Problems]
The jig for measuring wear of the present invention is a hub bolt in a wear measuring jig (5, 52, 54) used for measuring the amount of wear on the disk wheel mounting surface (12, 12a, 12b) of the axle hub (10). Through holes (5c, 52c, 54c) through which (30) can be penetrated are formed, and contact surfaces (5a, 52a) of the jigs (5, 52, 54) with the disk wheel mounting surfaces (12, 12a, 12b). , 54a) is the same as the level of the non-weared region (N) of the hub flange portion (11) when the nut (40) is screwed and tightened to the tip of the penetrated hub bolt (30), The difference between the level of the contact surface (5a) with the disk wheel mounting surface (12, 12a, 12b) and the level of the worn area (G) of the hub flange portion (11) is Hub disc wheels mounting surface (10) (12, 12a, 12b) are configured so as to be a wear amount of (claim 1: FIGS. 1 to 6).
[0013]
Only one through hole (5c) is formed in the jig (5) (Claim 2: FIGS. 2 to 4).
[0014]
According to the wear amount measuring jig of the present invention having the above-described configuration, after removing the wheel including the tire from the axle hub (10), the jig (5) is attached to the hub bolt (30), and the hole nut is mounted. It is only necessary to insert a gap gauge (not shown) into the formed gap (S), and the jig (5) does not have to be held in the hand, and the non-wear surface (12a, 12b). The gap (S) can be accurately measured without blurring.
The structure is simple, and the type having one hub bolt through hole (5c) is rich in versatility.
[0015]
A plurality of the through holes (52c, 54c) are formed in the jig (52, 54) (Claim 3: FIGS. 5 and 6).
[0016]
The type (52) having two hub bolt through holes (52c) has two fixing points to the axle hub and is stable, so that more accurate measurement data can be obtained.
In addition, measurement across the entire area between the hub bolts is possible.
[0017]
Since the type (54) having all the hub bolt through holes (54c) needs only to be attached to the hub (10) of the jig (54) once, the measurement work can be efficiently advanced.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the accompanying drawings.
FIG. 1 is an explanatory diagram showing a configuration of a hub bolt mounting portion during gap measurement. 2 to 4 show a three-dimensional view, a front view, and a side cross-sectional view, respectively, of the wear amount measuring jig of the first embodiment.
[0019]
1 to 4, the wear amount measuring jig 5 is a rectangular parallelepiped, and a groove 5b having a rectangular cross section with a groove width B on the measurement surface 5a side is provided on the outer side of the rectangular parallelepiped to prevent the hub bolt from climbing onto the flange portion. Are formed in parallel with two parallel sides 5f.
As shown in FIG. 3, the wear amount measuring jig 5 is symmetrical in the illustrated vertical (full width W) direction, and a hub bolt through hole 5c through which a hub bolt (not shown) passes is drilled in the center.
Further, on the surface 5g side opposite to the measurement surface 5a, there is formed a concave portion 5e in contact with a spherical seat of a wheel nut (not shown) and having a shape complementary to the spherical seat of the wheel nut.
[0020]
Here, the groove width B of the wear amount measuring jig 5 is within the range of the measurement surface 5a, as mentioned in the description of the prior art, the range not contacting the disk wheel, that is, the range where no wear occurs (N). Width to include
[0021]
According to the wear measuring jig 5 of the first embodiment having such a configuration, as shown in FIG. 1, after removing a disk wheel (not shown) including a tire from the hub flange portion 11, the wear measuring jig is used. It is only necessary to attach the tool 5 to the hub bolt 30, fix the jig 5 with the hole nut 40, and insert a gap gauge (not shown) into the formed gap S, and there is no need to hold the measuring jig 5 in hand. Since the non-wear surface N is firmly fixed, the gap S can be accurately measured without blurring.
Moreover, the structure is simple and versatile.
In FIG. 1, a shaded area G indicates a worn area.
[0022]
Next, a second embodiment will be described with reference to FIGS.
The wear amount measuring jig 52 which is an example of the second embodiment shown in FIG. 5 has two hub bolt through holes 5c in the first embodiment of FIGS. Is.
[0023]
When the wear amount measuring jig 52 is viewed from the front, the entire shape is a sector, and the width B1 and the total width W1 of the groove 52b are the width B and the total width of the groove 5b of the first embodiment of FIGS. Equal to W and the function is the same.
[0024]
According to such an example of the second embodiment, the operational effect is the same as that of the first embodiment of FIGS. 2 to 4, and the fixing points of the jig 52 to the axle hub are two places and stable. Therefore, more accurate measurement data can be obtained. In addition, measurement across the entire area between the hub bolts is possible.
[0025]
Further, the wear amount measuring jig 54, which is another example of the second embodiment shown in FIG. 6, is different from the first embodiment shown in FIGS. The annular side has a total number of through holes 54c so as to correspond to all the hub bolt through holes on the hub side 10.
The width and full width of the groove 54b are equal to the width B and full width W of the groove 5b of the first embodiment.
[0026]
According to another example of the second embodiment, the operation and effect are the same as those of the first embodiment shown in FIGS. 2 to 4, and the jig 54 is attached to the hub only once. Therefore, the measurement work can be advanced efficiently.
[0027]
It should be noted that the illustrated embodiment is merely an example, and does not limit the technical scope of the present invention.
For example, this embodiment can be applied to an axle in which the groove 14 shown in FIG. 8 is not formed on the disc wheel mounting surface of the axle flange.
[0028]
【The invention's effect】
The effects of the present invention will be described below.
(A) It is only necessary to attach the jig to the hub bolt, fix it with a hole nut, and insert a gap gauge into the formed gap. The jig does not need to be held in the hand and is firmly attached to the non-wear surface. The gap can be accurately measured without shaking.
(B) The structure is simple, and the type with one hub bolt through hole is versatile.
(C) The type with two hub bolt through holes has two fixed points to the axle hub and is stable, so that more accurate measurement data can be obtained. Moreover, the measurement over the whole area between hub bolts is possible.
(D) For the type with all hub bolt through holes, the jig can be attached to the hub only once, so that the measurement work can be carried out efficiently.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of a hub bolt mounting portion when measuring a gap in an embodiment of the present invention.
FIG. 2 is a three-dimensional view of a wear amount measuring jig according to the first embodiment of the present invention.
FIG. 3 is a front view of a wear amount measuring jig according to the first embodiment of the present invention.
4 is a cross-sectional view taken along line XX in FIG.
FIG. 5 is a front view showing an example of a wear amount measuring jig according to a second embodiment of the present invention.
FIG. 6 is a front view showing another example of a wear amount measuring jig according to the second embodiment of the present invention.
FIG. 7 is a side sectional view showing a state of wear on a disc wheel mounting surface of an axle hub.
FIG. 8 is a front view showing a measurement state in the prior art.
FIG. 9 is a side sectional view showing a measurement state in the prior art.
[Explanation of symbols]
5 ... Wear measuring jig 5a ... Measuring surface 5b ... Groove 5c ... Hub bolt through hole 10 ... Axle hub 11 ... Hub flange 12 ... Disc wheel mounting surface 30 ...・ Hub bolt 40 ... wheel nut

Claims (3)

アクスルハブのディスクホイール取付面における摩耗量を計測するのに用いられる摩耗計測用冶具において、ハブボルトが貫通可能な貫通孔が形成され、前記冶具の前記ディスクホイール取付面との接触面のレベルは、貫通したハブボルトの先端にナットを螺合して締め付けた場合におけるハブフランジ部の摩耗していない領域のレベルと同一となり、当該ディスクホイール取付面との接触面のレベルとハブフランジ部の摩耗した領域のレベルとの差異が、アクスルハブのディスクホイール取付面における摩耗量となる様に構成されていることを特徴とする摩耗計測用治具。In the wear measuring jig used to measure the amount of wear on the disc wheel mounting surface of the axle hub, a through hole through which the hub bolt can be penetrated is formed, and the level of the contact surface of the jig with the disc wheel mounting surface is through. When the nut is screwed onto the end of the hub bolt and tightened, the level of the hub flange part is not worn, and the level of the contact surface with the disc wheel mounting surface and the worn area of the hub flange part are the same. A wear measurement jig characterized in that the difference from the level is the amount of wear on the disc wheel mounting surface of the axle hub. 前記貫通孔は、前記冶具に1つだけ形成されている請求項1の摩耗計測用冶具。The wear measuring jig according to claim 1, wherein only one through hole is formed in the jig. 前記貫通孔は、前記冶具に複数形成されている請求項1の摩耗計測用冶具。The wear measuring jig according to claim 1, wherein a plurality of the through holes are formed in the jig.
JP2002088531A 2002-03-27 2002-03-27 Wear measurement jig Expired - Fee Related JP3827299B2 (en)

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Publication number Priority date Publication date Assignee Title
JP5089364B2 (en) * 2007-12-14 2012-12-05 株式会社ブリヂストン Wheel wear amount measuring method and wheel wear amount measuring apparatus
JP5171243B2 (en) * 2007-12-25 2013-03-27 株式会社ブリヂストン Mounting hole inspection tool and inspection method
JP5423365B2 (en) * 2009-12-08 2014-02-19 いすゞ自動車株式会社 Wear amount measuring tool and measuring method using the wear amount measuring tool

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