JP2001074609A - Gear-testing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To completely eliminate the primary factor of an error caused by an engagement radius, and at the same time the element of the radius of a follower toothed wheel by providing a rotation surface for setting a first cross angle on a surface including an engagement tangential line of two toothed wheels, and at the same time by providing the rotary shaft of the second cross angle of a rotation shaft where an engagement tangential line on the rotation surface is used as a center. SOLUTION: On a surface including the engagement tangential line of toothed wheels 1 and 2, a rotation surface for setting a cross angle θ1 is provided. In addition, the rotation shaft of a cross angle θ2 where an engagement tangential line existing on the rotation surface for setting the cross angle θ1 is set to a center. To cope with the combination of the toothed wheels with a different engagement radius, a calibration mechanism for setting the correct distance between shafts while the θ1 and θ2 are set to 0 deg., thus reducing the fluctuation between the distance between the shafts and the cross angles θ1 and θ2 even when temperature is non-uniformly increased.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】従来の技術は、所定の軸間距離で支持され
た駆動歯車と従動歯車の各々に与える噛合交叉角を各々
の歯車の回転軸心を通る面（すなわち歯車の中心軸）上
で、行き違い交叉角θ_１と“八”の字交叉角θ_２を与え
る。In the prior art, a meshing intersection angle given to each of a driving gear and a driven gear supported at a predetermined center distance is defined on a plane passing through the rotation axis of each gear (ie, the center axis of the gear). It gives the character crossing angle θ ₂ of disagreement crossing angle θ ₁ and the "eight".

【０００２】従来の技術は、θ_１とθ_２を与える際、歯
車の噛合半径だけ噛合点から離れているため軸心距離に
影響し、必然的弊害として軸心距離の再調整、再設定が
必要である。In the prior art, when θ ₁ and θ ₂ are given, the distance between the meshing points of the gears is far from the meshing point, which affects the axial distance. As an inevitable adverse effect, readjustment and resetting of the axial distance are required. is necessary.

【０００３】従来の技術は、噛合運転中の温度上昇が駆
動、従動歯車の半径と線膨張係数を乗じた膨張量とし
て、軸間距離と交叉角θ_１とθ_２の変動となって累積誤
差になる。[0003] The prior art, the temperature rise during the meshing operation is driven, as an expansion amount obtained by multiplying the radius and the linear expansion coefficient of the driven gear, the accumulated error becomes inter-axis distance and variation of cross angle theta ₁ and theta ₂ become.

【０００４】本発明では、θ_２を噛合点の面上で与える
ため、歯車の噛合半径による誤差要因がゼロとなり、軸
心距離に全く影響しない。[0004] In the present invention, to provide a theta ₂ on the surface of the engagement point, error factors due to meshing radius of the gear is zero, it does not affect the axial distance at all.

【０００５】同様に、駆動，従動歯車の「半径」の要素
をゼロにできるため不均一な温度上昇かでも、軸心距離
と交叉角θ_１θ_２は変動が非常に小さい。（無視でき
る。）Similarly, since the "radius" factor of the driving and driven gears can be made zero, the fluctuations in the axial distance and the crossing angle θ ₁ θ ₂ are very small even if the temperature rises unevenly. (Can be ignored)

【０００６】本発明の技術的手段は、２つの歯車の噛合
接線を含む面に、θ_１を設定する回動面を設ける。さら
に、そのθ_１を設定する回動面の中に存在する噛合接線
軸を中心としたθ_２の回動軸を設ける。噛合半径が異な
る歯車の組み合せに対応するため、θ_１＝０°，θ_２＝
０°状態で正しい軸間距離を設定するための較正機構を
有する。[0006] technical means of the present invention, the plane including the engagement tangents of the two gears is provided with a pivot surface for setting the theta _1. Furthermore, providing a rotational shaft of theta ₂ around the meshing tangent shaft present in the rotating surface to set the theta _1. In order to correspond to a combination of gears having different meshing radii, θ ₁ = 0 °, θ ₂ =
It has a calibration mechanism to set the correct center distance in the 0 ° state.

【０００７】本発明の効果は、第一にθ_２を噛合点の面
上で与えるため、歯車の噛合半径による誤差要因がゼロ
となり、軸心距離に全く影響しない。第二に、駆動，従
動歯車の「半径」の要素をゼロにできるため不均一な温
度上昇かでも、軸間距離と交叉角θ_１θ_２は変動が非常
に小さい。（無視できる。）従来、この種の軸交叉角を
一対の歯車の伝達誤差または角速度変動（差）の重要な
因子としてとらえる時、多くの場合は、歯車が（片方か
双方）片持ち構造であることによる、噛合点の反力（ラ
ジアル力と接線力）によって、当初企図した設計状態と
異なる実噛合状態すなわち実際の軸交叉角による影響が
大きかった。本発明の第三の効果は、装置そのもののコ
ンパクト化とそのことによる必然的な、片持状態（すな
わち製品と同一の支持状態）を現出することによって実
体に等しい試験環境を容易に提供することにある。[0007] Effects of the present invention, to provide a first in theta ₂ on the surface of the engagement point, error factors due to meshing radius of the gear is zero, it does not affect the axial distance at all. Second, since the "radius" factor of the driving and driven gears can be made zero, even if the temperature rises unevenly, the inter-axis distance and the intersection angle θ ₁ θ ₂ have very small fluctuations. Conventionally, when this kind of shaft crossing angle is regarded as an important factor of the transmission error or angular velocity fluctuation (difference) of a pair of gears, in many cases, the gears have a cantilevered structure (one or both). Due to this, the reaction force (radial force and tangential force) at the meshing point greatly affected the actual meshing state different from the originally designed design state, that is, the actual shaft crossing angle. A third advantage of the present invention is that it makes it possible to easily provide a test environment equivalent to an entity by making the device itself compact and thereby exhibiting the necessary cantilever state (ie, the same support state as the product). It is in.

【図面の簡単な説明】[Brief description of the drawings]

【図１】構想図FIG. 1 Schematic diagram

【符号の説明】[Explanation of symbols]

Claims (3)

【特許請求の範囲】[Claims] 【請求項１】２つの歯車の噛合接線を含む面に、θ_１を
設定する回動面を設ける。[Claim 1] A plane including the engagement tangents of the two gears, providing the rotating surface to set the theta _1. 【請求項２】さらにそのθ_１を設定する回動面の中に存
在する噛合接線軸を中心としたθ_２の回動軸を設ける。2. A further provision of the center and the theta ₂ of the rotating shaft meshing tangent shaft present in the rotating surface to set the theta _1. 【請求項３】噛合半径が異なる歯車の組み合せに対応す
るためθ_１＝０°，θ_２＝０°状態で、正しい軸間距離
を設定するための較正機構を有する。3. A calibration mechanism for setting a correct inter-axis distance in a state where θ ₁ = 0 ° and θ ₂ = 0 ° in order to correspond to a combination of gears having different meshing radii.