JP6275062B2 - Welding equipment - Google Patents

Welding equipment Download PDF

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JP6275062B2
JP6275062B2 JP2015019060A JP2015019060A JP6275062B2 JP 6275062 B2 JP6275062 B2 JP 6275062B2 JP 2015019060 A JP2015019060 A JP 2015019060A JP 2015019060 A JP2015019060 A JP 2015019060A JP 6275062 B2 JP6275062 B2 JP 6275062B2
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diameter side
rotation axis
welded
welding
joint
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JP2016140892A (en
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厚志 塩川
厚志 塩川
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JATCO Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K15/00—Electron-beam welding or cutting
    • B23K15/04—Electron-beam welding or cutting for welding annular seams

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Arc Welding In General (AREA)
  • Welding Or Cutting Using Electron Beams (AREA)
  • Laser Beam Processing (AREA)
  • General Details Of Gearings (AREA)

Description

本発明は、溶接装置に関する。   The present invention relates to a welding apparatus.

特許文献１には、遊星歯車機構のサンギヤに設けた筒状のボス部の外周に、クラッチハブの環状の連結部を外嵌させたのち、サンギヤとクラッチハブとを回転軸回りに回転させながら、ボス部と連結部との接合部を回転軸方向から溶接して、サンギヤにクラッチハブを固定することが開示されている。   In Patent Literature 1, an annular coupling portion of a clutch hub is fitted on the outer periphery of a cylindrical boss portion provided on a sun gear of a planetary gear mechanism, and then the sun gear and the clutch hub are rotated around a rotation axis. In addition, it is disclosed that a joint portion between a boss portion and a connecting portion is welded from the direction of the rotation axis to fix the clutch hub to the sun gear.

特開平１１−１４１６６２号公報Japanese Patent Application Laid-Open No. 11-141662

この種の溶接には、一般に、電子ビーム溶接（ＥＢＷ）が用いられるが、電子ビーム溶接によりボス部と連結部との接合部を溶接する際には、溶接時に発生するスパッタの飛散を防止するためのカバーを配置する必要がある。   Generally, electron beam welding (EBW) is used for this type of welding. When welding the joint between the boss portion and the connecting portion by electron beam welding, scattering of spatter generated during welding is prevented. It is necessary to arrange a cover for.

サンギヤのボス部とクラッチハブの連結部との接合部は、サンギヤの回転軸方向から見て円環状を成しており、スパッタの飛散を防止するためには、接合部の内径側と外径側に、それぞれカバーを配置する必要がある。   The joint between the boss of the sun gear and the coupling part of the clutch hub has an annular shape when viewed from the rotational axis direction of the sun gear, and in order to prevent spatter scattering, the inner diameter side and the outer diameter of the joint are used. It is necessary to place a cover on each side.

ここで、内径側と外径側のカバーは、溶接時に発生するスパッタの飛散を防ぐために、それぞれサンギヤとクラッチハブに、回転軸方向から隙間なく押し付ける必要がある。
しかし、例えば接合部の径方向外側であって、外径側のカバーが溶接時に当接する位置に、回転軸に対して傾斜する傾斜部が設けられている場合、クラッチハブの作製上の誤差などにより、傾斜部の回転軸方向の位置や回転軸に対する傾斜角が変わることがある。 Here, the covers on the inner diameter side and the outer diameter side need to be pressed against the sun gear and the clutch hub without any gap from the direction of the rotation axis in order to prevent scattering of spatter generated during welding.
However, for example, in the case where an inclined portion that is inclined with respect to the rotation shaft is provided at a position where the outer diameter side cover abuts at the time of welding on the radially outer side of the joint portion, an error in manufacturing the clutch hub, etc. As a result, the position of the inclined portion in the rotation axis direction and the inclination angle with respect to the rotation axis may change.

かかる場合、溶接時に外径側のカバーと傾斜部とが実際に当接する位置が、予定されていた位置から回転軸方向にズレることがあり、このズレに起因して、外径側のカバーが傾斜部に当接できなくなって、外径側のカバーとクラッチハブとの間に隙間が生じることがある。
そうすると、外径側のカバーが、カバーとしての機能を発揮できなくなって、溶接時に発生するスパッタが、接合部の外径側に飛散してしまう虞がある。 In such a case, the position at which the outer diameter side cover and the inclined portion actually abut at the time of welding may deviate from the planned position in the direction of the rotation axis. It may become impossible to contact the inclined portion, and a gap may be generated between the outer diameter side cover and the clutch hub.
As a result, the cover on the outer diameter side cannot exhibit the function as a cover, and there is a possibility that spatter generated during welding may be scattered on the outer diameter side of the joint.

そこで、互いに組み付けられた２つの部材を回転軸回りに回転させながら、これら２つの部材の円環状の接合部を回転軸方向から溶接する際に、スパッタの飛散をより確実に防止できるようにすることが求められている。   Therefore, it is possible to more reliably prevent spatter scattering when welding the annular joint of these two members from the direction of the rotation axis while rotating the two members assembled to each other around the rotation axis. It is demanded.

本発明は、
第１被溶接部材と、当該第１被溶接部材に組み付けられた第２被溶接部材との接合部が、前記第１被溶接部材の回転軸を所定間隔で囲む円環状を成すと共に、前記第２被溶接部材が、前記回転軸の軸方向から見た前記接合部の外径側に、前記回転軸に対して傾斜する傾斜部を有しており、
前記第２被溶接部材が組み付けられた前記第１被溶接部材を、前記回転軸回りに回転させながら前記接合部を溶接する溶接装置であって、
前記接合部の溶接時に、前記接合部の内径側に当接する内径側環状カバー部と、
前記接合部の溶接時に、前記傾斜部が当接する外径側環状カバー部と、
前記内径側環状カバー部と前記外径側環状カバー部とを保持するカバー保持部材と、
前記第２被溶接部材が組み付けられた前記第１被溶接部材を、前記内径側環状カバー部および前記外径側環状カバー部から前記回転軸方向に離間させた位置で支持すると共に、前記接合部を溶接する際に、前記回転軸方向に変位して、前記接合部の内径側と前記傾斜部とに、前記内径側環状カバー部と外径側環状カバー部とをそれぞれ当接させたのち、前記第２被溶接部材が組み付けられた前記第１被溶接部材を前記回転軸回りに回転させる支持部材と、を有すると共に、
前記外径側環状カバー部を、
前記カバー保持部材に保持されるとともに、当該カバー保持部材に対して相対回転可能に設けられた筒状の支持壁部と、
前記支持壁部に保持されるとともに、当該支持壁部に対して前記回転軸方向に移動可能に設けられて、前記接合部の溶接時に前記傾斜部に当接する当接部材と、から構成したことを特徴とする溶接装置とした。 The present invention
A joint portion between the first welded member and the second welded member assembled to the first welded member forms an annular shape surrounding the rotation axis of the first welded member at a predetermined interval, and 2 The member to be welded has an inclined portion that is inclined with respect to the rotating shaft on the outer diameter side of the joint portion viewed from the axial direction of the rotating shaft;
A welding apparatus for welding the joint while rotating the first welded member assembled with the second welded member around the rotation axis,
An inner diameter side annular cover portion that contacts the inner diameter side of the joint portion when welding the joint portion;
An outer diameter side annular cover portion with which the inclined portion abuts when welding the joint portion;
A cover holding member for holding the inner diameter side annular cover portion and the outer diameter side annular cover portion;
The first welded member to which the second welded member is assembled is supported at a position spaced apart from the inner diameter side annular cover part and the outer diameter side annular cover part in the rotational axis direction, and the joint part. Are welded to the inner diameter side of the joint portion and the inclined portion, and the inner diameter side annular cover portion and the outer diameter side annular cover portion are brought into contact with each other, And a support member that rotates the first welded member assembled with the second welded member around the rotation axis,
The outer diameter side annular cover part,
A cylindrical support wall that is held by the cover holding member and is provided so as to be rotatable relative to the cover holding member;
And a contact member that is held by the support wall portion and is movable in the direction of the rotation axis with respect to the support wall portion, and contacts the inclined portion when welding the joint portion. It was set as the welding apparatus characterized by these.

本発明によれば、接合部の溶接時に傾斜部に当接する外径側環状カバー部の当接部材が、回転軸方向に移動可能となっており、製造誤差により回転軸方向における傾斜部の位置にバラツキがあっても当接部材が回転軸方向に変位することで、当接部材と傾斜部とが確実に当接する。
よって、傾斜部の位置のバラツキがあっても、当接部材が傾斜部に当接できなくなって、当接部材と傾斜部との間に隙間が生じることなどがないので、溶接時に発生するスパッタが外径側に飛散することを好適に防止できる。 According to the present invention, the contact member of the outer diameter side annular cover portion that contacts the inclined portion during welding of the joint portion is movable in the rotational axis direction, and the position of the inclined portion in the rotational axis direction due to a manufacturing error. Even if there is variation, the abutting member is displaced in the direction of the rotation axis, so that the abutting member and the inclined portion are surely abutted.
Therefore, even if there is a variation in the position of the inclined portion, the contact member cannot contact the inclined portion, and there is no gap between the contact member and the inclined portion. Can be suitably prevented from scattering to the outer diameter side.

実施の形態にかかる溶接装置を説明する図である。It is a figure explaining the welding apparatus concerning embodiment. 実施の形態にかかる溶接装置を説明する図である。It is a figure explaining the welding apparatus concerning embodiment. 実施の形態にかかる溶接装置の動作を説明する図である。It is a figure explaining operation | movement of the welding apparatus concerning embodiment.

以下、本願発明の実施の形態を、サンギヤ８０とクラッチハブ９０との接合部Ｊに対して電子ビーム溶接を実施する溶接装置１に適用した場合を例に挙げて説明する。
図１は、溶接装置１の構成を説明する図であり、クラッチハブ９０が組み付けられたサンギヤ８０を、支持台１０で支持させた状態を示した断面図である。
図２は、溶接装置１の構成を説明する図であり、（ａ）は、図１における領域Ａの拡大図であり、（ｂ）は、図１における領域Ｂの拡大図であり、（ｃ）は、図１におけるＣ−Ｃ断面図である。なお、図２の（ｃ）では、サンギヤ８０とクラッチハブ９０との接合部Ｊの位置を破線で示している。 Hereinafter, the case where the embodiment of the present invention is applied to the welding apparatus 1 that performs electron beam welding on the joint J between the sun gear 80 and the clutch hub 90 will be described as an example.
FIG. 1 is a diagram illustrating the configuration of the welding apparatus 1, and is a cross-sectional view showing a state where a sun gear 80 with a clutch hub 90 assembled is supported by a support 10.
2A and 2B are diagrams for explaining the configuration of the welding apparatus 1. FIG. 2A is an enlarged view of a region A in FIG. 1, and FIG. 2B is an enlarged view of a region B in FIG. ) Is a cross-sectional view taken along the line CC in FIG. In FIG. 2C, the position of the joint J between the sun gear 80 and the clutch hub 90 is indicated by a broken line.

はじめに、溶接装置１で溶接されるサンギヤ８０とクラッチハブ９０を説明する。
サンギヤ８０は、図示しない遊星歯車機構のサンギヤであり、リング状の基部８１の外周に、図示しないピニオンギヤと噛合する歯部８２が設けられている（図１、図２の（ａ）参照）。
サンギヤ８０の回転軸Ｘ（中心軸）の軸方向における一方の面８１ａ（図１参照）には、円筒状のボス部８３が設けられており、このボス部８３の外周８３ａに、クラッチハブ９０のリング状の連結部９２１が外挿されて、クラッチハブ９０とサンギヤ８０とが互いに組み付けられるようになっている。
この状態において連結部９２１の内周９２１ａとボス部８３の外周８３ａの互いの接合部Ｊ（図２の（ａ）参照）が、溶接装置１で溶接される被溶接部となっており、この接合部Ｊは、回転軸Ｘ方向から見て、回転軸Ｘを所定間隔で囲む円環状を成している（図２の（ｃ）、仮想線参照） First, the sun gear 80 and the clutch hub 90 that are welded by the welding apparatus 1 will be described.
The sun gear 80 is a sun gear of a planetary gear mechanism (not shown), and a tooth portion 82 that meshes with a pinion gear (not shown) is provided on the outer periphery of a ring-shaped base portion 81 (see FIGS. 1 and 2A).
A cylindrical boss portion 83 is provided on one surface 81a (see FIG. 1) of the sun gear 80 in the axial direction of the rotation axis X (center axis), and a clutch hub 90 is provided on an outer periphery 83a of the boss portion 83. The ring-shaped connecting portion 921 is extrapolated, and the clutch hub 90 and the sun gear 80 are assembled to each other.
In this state, the joint portion J (see FIG. 2A) of the inner periphery 921a of the connecting portion 921 and the outer periphery 83a of the boss portion 83 is a welded portion to be welded by the welding apparatus 1. The joint portion J has an annular shape that surrounds the rotation axis X at a predetermined interval when viewed from the direction of the rotation axis X (see (c) in FIG. 2, imaginary line).

図１に示すようにクラッチハブ９０は、円筒状の周壁部９１の一端に、回転軸Ｘの軸方向（以下、回転軸Ｘ方向）から見てリング状を成す底壁部９２が設けられた有底円筒形状の部材であり、底壁部９２の中央部に、サンギヤ８０との連結部９２１が位置している。
この連結部９２１と、底壁部９２の外縁部９２３は、回転軸Ｘ方向でオフセットしており、連結部９２１の外縁部９２３との間が、回転軸Ｘ方向で連結部９２１から外縁部９２３に向かうにつれて内径が大きくなる向きで傾斜した傾斜部９２２となっている。 As shown in FIG. 1, the clutch hub 90 is provided at one end of a cylindrical peripheral wall portion 91 with a bottom wall portion 92 that forms a ring shape when viewed from the axial direction of the rotation axis X (hereinafter referred to as the rotation axis X direction). The bottomed cylindrical member is a bottomed cylindrical member, and a connecting portion 921 to the sun gear 80 is located at the center of the bottom wall portion 92.
The connection portion 921 and the outer edge portion 923 of the bottom wall portion 92 are offset in the rotation axis X direction, and the space between the connection portion 921 and the outer edge portion 923 of the connection portion 921 is from the connection portion 921 to the outer edge portion 923 in the rotation axis X direction. It becomes the inclination part 922 which inclined in the direction where an internal diameter becomes large as heading to.

そのため、クラッチハブ９０をサンギヤ８０に組み付けた状態において、連結部９２１とボス部８３との接合部Ｊの径方向外側に、回転軸Ｘに対して所定角度傾斜した傾斜部９２２が位置している。   Therefore, in a state where the clutch hub 90 is assembled to the sun gear 80, an inclined portion 922 inclined at a predetermined angle with respect to the rotation axis X is located on the radially outer side of the joint portion J between the connecting portion 921 and the boss portion 83. .

溶接装置１は、クラッチハブ９０が組み付けられたサンギヤ８０を支持する支持台１０と、後記する内径側カバー部３０および外径側カバー部４０を支持台１０の上方に配置するカバー保持部材２０と、を有している。   The welding apparatus 1 includes a support base 10 that supports a sun gear 80 to which a clutch hub 90 is assembled, a cover holding member 20 that disposes an inner diameter side cover portion 30 and an outer diameter side cover portion 40 described later above the support base 10, and ,have.

支持台１０は、円板状の支持部１００と、この支持部１００よりも外径の小さい嵌合部１０１と、を有しており、嵌合部１０１は、支持部１００の中央部からカバー保持部材２０側の上方に延出して設けられている。
溶接装置１では、クラッチハブ９０が組み付けられたサンギヤ８０を支持台１０で支持させる際に、サンギヤ８０の基部８１が嵌合部１０１に外挿されるようになっている。 The support base 10 includes a disk-shaped support portion 100 and a fitting portion 101 having an outer diameter smaller than that of the support portion 100, and the fitting portion 101 covers from the central portion of the support portion 100. It is provided to extend upward on the holding member 20 side.
In the welding apparatus 1, when the sun gear 80 to which the clutch hub 90 is assembled is supported by the support base 10, the base portion 81 of the sun gear 80 is extrapolated to the fitting portion 101.

実施の形態では、支持台１０は、図示しない駆動機構により、回転軸Ｘ回りに回転するようになっており、支持台１０においてサンギヤ８０は、支持台１０との相対回転が規制された状態で支持されている。   In the embodiment, the support base 10 is rotated about the rotation axis X by a driving mechanism (not shown), and the sun gear 80 in the support base 10 is in a state where relative rotation with the support base 10 is restricted. It is supported.

カバー保持部材２０は、支持台１０の回転軸Ｘ上で支持台１０に対向配置された円板状の保持部材２００を有しており、この保持部材２００の支持台１０側の下面２００ａに、内径側カバー部３０と、外径側カバー部４０とが設けられている。   The cover holding member 20 has a disk-shaped holding member 200 disposed opposite to the support base 10 on the rotation axis X of the support base 10, and the lower surface 200 a of the holding member 200 on the support base 10 side is An inner diameter side cover portion 30 and an outer diameter side cover portion 40 are provided.

内径側カバー部３０は、保持部材２００の下面２００ａに固定された円柱形状の軸部３１を有しており、この軸部３１は、回転軸Ｘに沿って、支持台１０側の下方に直線状に延出している。
この軸部３１の下端部は、カバー部材３５の保持部３１１となっており、この保持部３１１の下端には、ベアリングＢの支持穴３１２が開口している。 The inner diameter side cover portion 30 has a columnar shaft portion 31 fixed to the lower surface 200 a of the holding member 200, and the shaft portion 31 is straight along the rotation axis X on the lower side of the support base 10. It extends into a shape.
A lower end portion of the shaft portion 31 is a holding portion 311 of the cover member 35, and a support hole 312 of the bearing B is opened at the lower end of the holding portion 311.

保持部３１１では、支持穴３１２の上側に隣接して、支持穴３１２よりも内径の小さい軸収容穴３１３が設けられていると共に、この軸収容穴３１３の上側に隣接して、軸収容穴３１３よりも内径の小さいスプリング収容穴３１４が設けられており、これら支持穴３１２と、軸収容穴３１３と、スプリング収容穴３１４とは、回転軸Ｘ上で同軸に設けられている。
支持穴３１２には、カバー部材３５の軸部３５２が、支持台１０側の下方から挿入されており、カバー部材３５の軸部３５２は、ベアリングＢを介して保持部３１１で回転可能に支持されている。 In the holding portion 311, a shaft accommodation hole 313 having an inner diameter smaller than that of the support hole 312 is provided adjacent to the upper side of the support hole 312, and the shaft accommodation hole 313 is adjacent to the upper side of the shaft accommodation hole 313. A spring accommodating hole 314 having a smaller inner diameter is provided, and the support hole 312, the shaft accommodating hole 313, and the spring accommodating hole 314 are coaxially provided on the rotation axis X.
A shaft portion 352 of the cover member 35 is inserted into the support hole 312 from below on the support base 10 side, and the shaft portion 352 of the cover member 35 is rotatably supported by the holding portion 311 via the bearing B. ing.

軸部３５２の上端には、スプリング収容穴３１４に収容されたスプリングＳｐが、回転軸Ｘ方向から当接しており、保持部３１１で保持されたカバー部材３５は、軸収容穴３１３の回転軸Ｘ方向の高さｈ１分だけ、回転軸Ｘに沿って、保持部材２００側の上方に変位可能となっている。   The spring Sp accommodated in the spring accommodation hole 314 is in contact with the upper end of the shaft portion 352 from the direction of the rotation axis X, and the cover member 35 held by the holding portion 311 is connected to the rotation axis X of the shaft accommodation hole 313. It can be displaced upward along the rotation axis X on the holding member 200 side by the height h1 in the direction.

そのため、軸部３１においてカバー部材３５は、回転軸Ｘ方向への変位と、軸部３１に対する相対回転が許容された状態で設けられている。   Therefore, the cover member 35 in the shaft portion 31 is provided in a state where displacement in the direction of the rotation axis X and relative rotation with respect to the shaft portion 31 are allowed.

カバー部材３５では、円板状の上壁部３５１の中央に軸部３５２が設けられており、上壁部３５１の支持台１０側の下面には、上壁部３５１の周縁を全周に亘って囲む環状壁部３５３が設けられている。
環状壁部３５３の内径Ｄ１は、クラッチハブ９０とサンギヤ８０との環状の接合部Ｊの径Ｄｘよりも小さい径に設定されており、環状壁部３５３が、接合部Ｊの溶接時に接合部Ｊの内径側に当接するようになっている。 In the cover member 35, a shaft portion 352 is provided at the center of the disk-shaped upper wall portion 351, and the lower surface of the upper wall portion 351 on the support base 10 side extends around the periphery of the upper wall portion 351. An annular wall portion 353 is provided.
The inner diameter D1 of the annular wall portion 353 is set to be smaller than the diameter Dx of the annular joint portion J between the clutch hub 90 and the sun gear 80, and the annular wall portion 353 is joined to the joint portion J when welding the joint portion J. It comes in contact with the inner diameter side.

内径側カバー部３０の外径側に位置する外径側カバー部４０は、環状壁部３５３を所定間隔で囲む円筒状の支持壁部４１と、この支持壁部４１の支持台１０側の下部に設けられた円筒状の当接部材４２とを有している。   The outer diameter side cover part 40 located on the outer diameter side of the inner diameter side cover part 30 includes a cylindrical support wall part 41 surrounding the annular wall part 353 at a predetermined interval, and a lower part of the support wall part 41 on the support base 10 side. And a cylindrical abutting member 42 provided on the surface.

支持壁部４１は、カバー部材３５を収容可能な内径Ｄ２を有する筒状の部材であり、保持部材２００の下面２００ａに固定された取付部材４７に、ベアリングＢを介して回転可能に支持されている。
この支持壁部４１の回転軸Ｘ方向の長さＬ１は、当該支持壁部４１の下端４１ａが、前記したカバー部材３５（環状壁部３５３）の下端３５３ａよりも保持部材２００側の上方に位置する長さであって、溶接時にクラッチハブ９０の底壁部９２に当接しない長さに設定されている。 The support wall portion 41 is a cylindrical member having an inner diameter D <b> 2 that can accommodate the cover member 35, and is rotatably supported by a mounting member 47 fixed to the lower surface 200 a of the holding member 200 via a bearing B. Yes.
The length L1 of the support wall portion 41 in the rotation axis X direction is such that the lower end 41a of the support wall portion 41 is positioned above the holding member 200 side with respect to the lower end 353a of the cover member 35 (annular wall portion 353). This length is set so as not to contact the bottom wall 92 of the clutch hub 90 during welding.

この支持壁部４１の下部には、当接部材４２が内挿された状態で取り付けられている。
当接部材４２は、支持壁部４１の内径Ｄ２と整合する外径の円筒状の基部４２０を有しており、この基部４２０の外周には、支持壁部４１を厚み方向に貫通させた取付ボルト４６の係合溝４２１が開口している（図２の（ｂ）、（ｃ）参照）。 A contact member 42 is attached to the lower portion of the support wall portion 41 in an inserted state.
The abutting member 42 has a cylindrical base portion 420 having an outer diameter that matches the inner diameter D2 of the support wall portion 41, and is attached to the outer periphery of the base portion 420 through the support wall portion 41 in the thickness direction. The engagement groove 421 of the bolt 46 is opened (see (b) and (c) of FIG. 2).

図２の（ｃ）に示すように、係合溝４２１は、回転軸Ｘ周りの周方向に所定間隔で４つ設けられている。回転軸Ｘ方向から見た係合溝４２１の幅Ｗ１は、取付ボルト４６の軸部４６１と略整合する幅に設定されており、支持壁部４１と当接部材４２の相対回転が、係合溝４２１に係合させた取付ボルト４６により規制されている。   As shown in FIG. 2C, four engagement grooves 421 are provided at predetermined intervals in the circumferential direction around the rotation axis X. The width W1 of the engagement groove 421 viewed from the direction of the rotation axis X is set to a width that substantially matches the shaft portion 461 of the mounting bolt 46, and the relative rotation between the support wall portion 41 and the contact member 42 is engaged. It is regulated by a mounting bolt 46 engaged with the groove 421.

図２の（ｂ）に示すように、係合溝４２１の回転軸Ｘ方向の長さＬ２は、取付ボルト４６の軸部４６１の幅Ｗ２よりも大きい長さに設定されており、支持壁部４１の下部で支持された当接部材４２は、係合溝４２１の長さＬ２の範囲内で、回転軸Ｘ方向（上下方向）に移動可能となっている。   As shown in FIG. 2B, the length L2 of the engagement groove 421 in the rotation axis X direction is set to be longer than the width W2 of the shaft portion 461 of the mounting bolt 46, and the support wall portion. The abutting member 42 supported at the lower part of 41 is movable in the direction of the rotation axis X (vertical direction) within the range of the length L2 of the engaging groove 421.

当接部材４２では、基部４２０の支持台１０側の下部の外周であって、前記したクラッチハブ９０の傾斜部９２２との対向部に、傾斜面４２０ａが設けられている。
実施の形態では、係合溝４２１の上辺４２１ａ（図２の（ｂ）参照）に取付ボルト４６の軸部４６１が当接した状態で、傾斜面４２０ａが、支持壁部４１の下端４１ａよりも下方に位置するように、基部４２０における係合溝４２１の位置が設定されている。 In the abutting member 42, an inclined surface 420 a is provided on the outer periphery of the lower portion of the base 420 on the support base 10 side and at a portion facing the inclined portion 922 of the clutch hub 90 described above.
In the embodiment, in the state where the shaft portion 461 of the mounting bolt 46 is in contact with the upper side 421a (see FIG. 2B) of the engagement groove 421, the inclined surface 420a is more than the lower end 41a of the support wall portion 41. The position of the engagement groove 421 in the base 420 is set so as to be positioned below.

ここで、当接部材４２の傾斜面４２０ａは、クラッチハブ９０とサンギヤ８０との接合部Ｊを溶接する際に、接合部Ｊの外径側に位置するクラッチハブ９０の傾斜部９２２に、回転軸Ｘ方向から当接するようになっている。
そのため、傾斜面４２０ａの水平線ＨＬに対する傾斜角θは、前記したクラッチハブ９０の傾斜部９２２の傾斜角θと略同じ角度に設定されている。 Here, the inclined surface 420a of the abutting member 42 rotates to the inclined portion 922 of the clutch hub 90 positioned on the outer diameter side of the joint portion J when the joint portion J between the clutch hub 90 and the sun gear 80 is welded. It comes into contact with the axis X direction.
Therefore, the inclination angle θ of the inclined surface 420a with respect to the horizontal line HL is set to be substantially the same as the inclination angle θ of the inclined portion 922 of the clutch hub 90 described above.

なお、当接部材４２は、支持壁部４１を貫通させた取付ボルト４６を介して、支持壁部４１に取り付けられているので、傾斜角θの異なる当接部材４２を複数用意しておき、当接部材４２を当接させるクラッチハブ９０の傾斜部９２２に応じて当接部材４２を交換できるようになっている。   In addition, since the contact member 42 is attached to the support wall portion 41 via the mounting bolt 46 that penetrates the support wall portion 41, a plurality of contact members 42 having different inclination angles θ are prepared in advance. The contact member 42 can be exchanged according to the inclined portion 922 of the clutch hub 90 with which the contact member 42 is contacted.

以下、溶接装置１でのクラッチハブ９０とサンギヤ８０との接合部Ｊの溶接を説明する。
図３は、接合部Ｊの溶接を説明する図であり、（ａ）は、クラッチハブ９０が組み付けられたサンギヤ８０を、支持台１０に支持させた溶接開始前の状態を示した断面図であり、（ｂ）は、支持台１０を、カバー保持部材２０側の上方に移動させて、クラッチハブ９０が組み付けられたサンギヤ８０を、接合部Ｊの溶接開始位置に配置した状態を示した断面図であり、（ｃ）は、（ｂ）におけるＡ−Ａ断面図であり、（ｄ）は、（ｂ）における領域Ｂの拡大図である。
なお、図３の（ｃ）では、接合部Ｊの溶接途上の状態を示しており、溶接前の接合部Ｊと溶接後の溶接部Ｗｅの両方を図示している。 Hereinafter, welding of the joint portion J between the clutch hub 90 and the sun gear 80 in the welding apparatus 1 will be described.
FIG. 3 is a view for explaining welding of the joint portion J. FIG. 3A is a cross-sectional view showing a state before the start of welding in which the sun gear 80 assembled with the clutch hub 90 is supported by the support base 10. And (b) is a cross section showing a state in which the support base 10 is moved upward on the cover holding member 20 side and the sun gear 80 with the clutch hub 90 assembled is arranged at the welding start position of the joint J. (C) is AA sectional drawing in (b), (d) is an enlarged view of the area | region B in (b).
In addition, in FIG.3 (c), the state in the middle of welding of the junction part J is shown, and both the junction part J before welding and the welding part We after welding are shown in figure.

はじめに、カバー保持部材２０の下方に配置された支持台１０に、クラッチハブ９０が組み付けられたサンギヤ８０を、支持台１０との相対回転を規制した状態で支持させる（図３の（ａ）参照）。
続いて、支持台１０をカバー保持部材２０側の上方に移動させて（図３の（ａ）、白抜き矢印参照）、クラッチハブ９０とサンギヤ８０との接合部Ｊの内径側に、カバー部材３５の環状壁部３５３の下端３５３ａを当接させると共に、外径側の傾斜部９２２に、当接部材４２の傾斜面４２０ａを当接させる（図３の（ｂ）参照）。 First, the sun gear 80 in which the clutch hub 90 is assembled is supported on the support base 10 disposed below the cover holding member 20 in a state where relative rotation with the support base 10 is restricted (see FIG. 3A). ).
Subsequently, the support base 10 is moved upward on the cover holding member 20 side (see the white arrow in FIG. 3A), and the cover member is moved to the inner diameter side of the joint portion J between the clutch hub 90 and the sun gear 80. The lower end 353a of the annular wall portion 353 of the 35 is brought into contact, and the inclined surface 420a of the contact member 42 is brought into contact with the inclined portion 922 on the outer diameter side (see FIG. 3B).

ここで、軸部３１においてカバー部材３５は、回転軸Ｘ方向に変位可能となっている。そのため、接合部Ｊの内径側が、カバー部材３５の環状壁部３５３に回転軸Ｘ方向から当接すると、カバー部材３５は、スプリングＳｐを圧縮しながら、保持部材２００側の上方に変位する。   Here, in the shaft part 31, the cover member 35 can be displaced in the rotation axis X direction. Therefore, when the inner diameter side of the joint portion J comes into contact with the annular wall portion 353 of the cover member 35 from the direction of the rotation axis X, the cover member 35 is displaced upward on the holding member 200 side while compressing the spring Sp.

その結果、カバー部材３５の環状壁部３５３が、サンギヤ８０を、スプリングＳｐの圧縮量に応じて決まる付勢力で、支持台１０の支持部１００に押しつけるので、クラッチハブ９０が組み付けられたサンギヤ８０の回転軸Ｘ方向の位置決めが行われた状態となる。   As a result, the annular wall portion 353 of the cover member 35 presses the sun gear 80 against the support portion 100 of the support base 10 with an urging force determined according to the compression amount of the spring Sp, so that the sun gear 80 to which the clutch hub 90 is assembled. Thus, positioning in the direction of the rotation axis X is performed.

また、サンギヤ８０を接合部Ｊの溶接開始位置に配置する前の状態（図３の（ａ）参照）では、外径側カバー部４０は、当接部材４２の傾斜面４２０ａが設けられた下端側を、カバー部材３５の環状壁部３５３の下端３５３ａよりも支持台１０側の下方に位置させている。
そのため、クラッチハブ９０が組み付けられたサンギヤ８０を支持する支持台１０を、カバー保持部材２０側の上方に移動させると、クラッチハブ９０の傾斜部９２２と当接部材４２の傾斜面４２０ａとが、サンギヤ８０とカバー部材３５の環状壁部３５３よりも先に当接することになる。 Further, in the state before the sun gear 80 is arranged at the welding start position of the joint portion J (see FIG. 3A), the outer diameter side cover portion 40 has a lower end provided with the inclined surface 420a of the contact member 42. The side is positioned below the lower end 353a of the annular wall portion 353 of the cover member 35 on the support base 10 side.
Therefore, when the support base 10 that supports the sun gear 80 to which the clutch hub 90 is assembled is moved upward on the cover holding member 20 side, the inclined portion 922 of the clutch hub 90 and the inclined surface 420a of the contact member 42 are The sun gear 80 comes into contact with the annular wall portion 353 of the cover member 35 in advance.

そして、この状態から、サンギヤ８０と環状壁部３５３とを接触させるために、支持台１０をカバー保持部材２０側の上方にさらに移動させると、支持壁部４１で支持された当接部材４２は回転軸Ｘ方向（上下方向）に移動可能となっているので、当接部材４２は傾斜部９２２に押されて保持部材２００側の上方に移動することになる（図３の（ｄ）参照）。
よって、クラッチハブ９０の上方への移動が、傾斜部９２２に当接した当接部材４２により阻害されないので、クラッチハブ９０における傾斜部９２２周りに応力が作用して変形することがない。 Then, when the support base 10 is further moved upward on the cover holding member 20 side in order to bring the sun gear 80 and the annular wall portion 353 into contact with each other, the contact member 42 supported by the support wall portion 41 is Since it can move in the rotation axis X direction (vertical direction), the contact member 42 is pushed by the inclined portion 922 and moves upward on the holding member 200 side (see FIG. 3D). .
Therefore, the upward movement of the clutch hub 90 is not hindered by the contact member 42 that is in contact with the inclined portion 922, so that the stress around the inclined portion 922 in the clutch hub 90 is not deformed.

また、傾斜部９２２の回転軸Ｘ方向の位置や回転軸Ｘに対する傾きに多少のバラツキがあっても、当接部材４２が回転軸Ｘ方向に変位することで、クラッチハブ９０の上方への移動が、当接部材４２により阻害されないので、クラッチハブ９０における傾斜部９２２周りに応力が作用して変形することがない。
よって、接合部Ｊの外径側を変形させることなく、当接部材４２を傾斜部９２２に接触させることができると共に、当接部材４２と傾斜部９２２とを接触状態で保持することができるので、溶接時に発生するスパッタの外径側への飛散を、当接部材４２とこの当接部材４２を支持する支持壁部４１により好適に防止できる。 Further, even if there is some variation in the position of the inclined portion 922 in the rotation axis X direction and the inclination with respect to the rotation axis X, the contact member 42 is displaced in the rotation axis X direction, so that the clutch hub 90 moves upward. However, since the contact member 42 is not hindered, the stress does not act around the inclined portion 922 of the clutch hub 90 and the deformation does not occur.
Therefore, the contact member 42 can be brought into contact with the inclined portion 922 without deforming the outer diameter side of the joint portion J, and the contact member 42 and the inclined portion 922 can be held in contact. The scattering of spatter generated during welding to the outer diameter side can be suitably prevented by the contact member 42 and the support wall portion 41 that supports the contact member 42.

さらに、実施の形態では、クラッチハブ９０が組み付けられたサンギヤ８０を、カバー部材３５の環状壁部３５３に接合部Ｊの内径側を当接させた溶接開始位置に配置した状態で、外径側カバー部４０の支持壁部４１の下端４１ａと、クラッチハブ９０の外縁部９２３との間に隙間Ｗａが確保されるように、回転軸Ｘ方向の支持壁部４１の長さＬ１（図１参照）が設定されている。
支持壁部４１が外縁部９２３に当接した場合には、支持壁部４１から外縁部９２３に応力が作用するので、傾斜部９２２の回転軸Ｘ方向の位置や回転軸Ｘに対する傾きのバラツキの程度によっては、外縁部９２３に作用する応力で、クラッチハブ９０における傾斜部９２２回りに応力が作用して変形する虞があるが、隙間Ｗａを確保するようにしていることで、かかる事態の発生を好適に防止できるようになっている。 Furthermore, in the embodiment, the sun gear 80 assembled with the clutch hub 90 is disposed at the welding start position where the inner diameter side of the joint portion J is in contact with the annular wall portion 353 of the cover member 35, and the outer diameter side The length L1 of the support wall 41 in the direction of the rotation axis X (see FIG. 1) so that a gap Wa is secured between the lower end 41a of the support wall 41 of the cover 40 and the outer edge 923 of the clutch hub 90. ) Is set.
When the support wall portion 41 abuts on the outer edge portion 923, stress acts on the outer edge portion 923 from the support wall portion 41. Therefore, the position of the inclined portion 922 in the direction of the rotation axis X and the variation in inclination with respect to the rotation axis X Depending on the degree, the stress acting on the outer edge portion 923 may be deformed due to the stress acting around the inclined portion 922 in the clutch hub 90, but the occurrence of such a situation occurs by ensuring the gap Wa. Can be suitably prevented.

そして、クラッチハブ９０が組み付けられたサンギヤ８０を、クラッチハブ９０とサンギヤ８０との接合部Ｊの内径側に、カバー部材３５の環状壁部３５３の下端３５３ａを当接させると共に、外径側の傾斜部９２２に当接部材４２の傾斜面４２０ａを当接させた溶接開始位置にしたのち、支持台１０を回転軸Ｘ回りに回転させながら（図３の（ｂ）、白抜き矢印参照）、カバー保持部材２０側に配置した電子ビームの発生源（図示せず）から、電子ビームＥＢを接合部Ｊに照射する。   Then, the sun gear 80 to which the clutch hub 90 is assembled is brought into contact with the lower end 353a of the annular wall portion 353 of the cover member 35 on the inner diameter side of the joint portion J between the clutch hub 90 and the sun gear 80, and on the outer diameter side. After the welding start position in which the inclined surface 420a of the contact member 42 is brought into contact with the inclined portion 922, the support base 10 is rotated around the rotation axis X (see the white arrow in FIG. 3B). The junction J is irradiated with an electron beam EB from an electron beam generation source (not shown) arranged on the cover holding member 20 side.

これにより、接合部Ｊが、回転軸Ｘ周りの周方向に沿って順次溶接される（図３の（ｃ）、溶接部Ｗｅ参照）。そして、接合部Ｊが回転軸Ｘ周りの周方向の全周に亘って溶接された時点で、電子ビーム溶接の照射と、支持台１０の回転を止めて、溶接を終了する。
これにより、サンギヤ８０に組み付けられたクラッチハブ９０が、溶接によりサンギヤ８０に固定されることになる。 Thereby, the joint part J is sequentially welded along the circumferential direction around the rotation axis X (see (c) in FIG. 3, the welded part We). Then, when the joint portion J is welded over the entire circumference in the circumferential direction around the rotation axis X, the irradiation of the electron beam welding and the rotation of the support base 10 are stopped, and the welding is finished.
Thereby, the clutch hub 90 assembled to the sun gear 80 is fixed to the sun gear 80 by welding.

なお、内径側カバー部３０のカバー部材３５は、軸部３１に対して相対回転可能に設けられており、外径側カバー部４０の支持壁部４１は、保持部材２００の下面２００ａに固定された取付部材４７に対して相対回転可能に設けられている。
そのため、接合部Ｊの内径側と外径側に、それぞれカバー部材３５の環状壁部３５３の下端３５３ａと、支持壁部４１で支持された当接部材４２の傾斜面４２０ａを当接させた状態で、支持台１０を回転させて溶接を行っても、環状壁部３５３と当接部材４２とが、サンギヤ８０とクラッチハブ９０との当接部を摺動することがない。 The cover member 35 of the inner diameter side cover portion 30 is provided so as to be rotatable relative to the shaft portion 31, and the support wall portion 41 of the outer diameter side cover portion 40 is fixed to the lower surface 200 a of the holding member 200. The mounting member 47 is provided so as to be relatively rotatable.
Therefore, a state in which the lower end 353a of the annular wall portion 353 of the cover member 35 and the inclined surface 420a of the contact member 42 supported by the support wall portion 41 are brought into contact with the inner diameter side and the outer diameter side of the joint portion J, respectively. Thus, even when welding is performed by rotating the support base 10, the annular wall portion 353 and the contact member 42 do not slide on the contact portion between the sun gear 80 and the clutch hub 90.

環状壁部３５３と当接部材４２とが、サンギヤ８０とクラッチハブ９０との当接部を摺動すると、摺動に起因して発生する振動などにより、接合部Ｊの電子ビームＥＢによる溶接痕（溶接部Ｗｅ）に径方向の振れが生じて、サンギヤ８０とクラッチハブ９０との接合部Ｊを適切に溶接できなくなる結果、サンギヤ８０に対するクラッチハブ９０の固定が不完全となる虞がある。
上記のように構成することで、環状壁部３５３と当接部材４２とが、サンギヤ８０とクラッチハブ９０との当接部を摺動しないので、サンギヤ８０に対するクラッチハブ９０の固定が不完全となることがない。 When the annular wall portion 353 and the abutting member 42 slide on the abutting portion between the sun gear 80 and the clutch hub 90, welding traces due to the electron beam EB at the joint portion J due to vibration generated due to the sliding. As a result of radial deflection at the (welded portion We), the joint portion J between the sun gear 80 and the clutch hub 90 cannot be appropriately welded, and as a result, the fixing of the clutch hub 90 to the sun gear 80 may be incomplete.
With the configuration described above, the annular wall portion 353 and the contact member 42 do not slide on the contact portion between the sun gear 80 and the clutch hub 90, so that the clutch hub 90 is not completely fixed to the sun gear 80. Never become.

以上の通り、実施の形態では、
（１）サンギヤ８０（第１被溶接部材）と、このサンギヤ８０に組み付けられたクラッチハブ９０（第２被溶接部材）との接合部Ｊが、サンギヤ８０の回転軸Ｘを所定間隔で囲む円環状を成すと共に、クラッチハブ９０が、回転軸Ｘ方向から見た接合部Ｊの外径側に、回転軸Ｘに対して傾斜する傾斜部９２２を有しており、
クラッチハブ９０が組み付けられたサンギヤ８０を、回転軸Ｘ回りに回転させながら接合部Ｊを溶接する溶接装置１であって、
接合部Ｊの溶接時に、接合部Ｊの内径側に当接する内径側カバー部３０（内径側環状カバー部）と、
接合部Ｊの溶接時に、傾斜部９２２が当接する外径側カバー部４０（外径側環状カバー部）と、
内径側カバー部３０と外径側カバー部４０とを保持するカバー保持部材２０と、
クラッチハブ９０が組み付けられたサンギヤ８０を、内径側カバー部３０および外径側カバー部４０から回転軸Ｘ方向に離間させた位置で支持すると共に、接合部Ｊを溶接する際に、回転軸Ｘ方向に変位して、接合部Ｊの内径側のボス部８３と外径側の傾斜部９２２とを、内径側カバー部３０と外径側カバー部４０とに当接させたのち、クラッチハブ９０が組み付けられたサンギヤ８０を、回転軸Ｘ回りに回転させる支持台１０（支持部材）と、を有すると共に、
外径側カバー部４０を、
カバー保持部材２０に保持されるとともに、当該カバー保持部材２０に対して相対回転可能に設けられた筒状の支持壁部４１と、
支持壁部４１に保持されるとともに、当該支持壁部４１に対して回転軸Ｘ方向に移動可能に設けられて、接合部Ｊの溶接時に傾斜部９２２に当接する当接部材４２と、から構成した。 As described above, in the embodiment,
(1) A joint J between the sun gear 80 (first member to be welded) and the clutch hub 90 (second member to be welded) assembled to the sun gear 80 surrounds the rotation axis X of the sun gear 80 at a predetermined interval. The clutch hub 90 has an inclined portion 922 that is inclined with respect to the rotation axis X on the outer diameter side of the joint portion J viewed from the rotation axis X direction.
A welding apparatus 1 for welding a joint J while rotating a sun gear 80 with a clutch hub 90 assembled about a rotation axis X.
An inner diameter side cover portion 30 (inner diameter side annular cover portion) that contacts the inner diameter side of the joint portion J when welding the joint portion J;
An outer diameter side cover portion 40 (outer diameter side annular cover portion) with which the inclined portion 922 contacts during welding of the joint portion J;
A cover holding member 20 that holds the inner diameter side cover portion 30 and the outer diameter side cover portion 40;
The sun gear 80 to which the clutch hub 90 is assembled is supported at a position separated from the inner diameter side cover portion 30 and the outer diameter side cover portion 40 in the direction of the rotation axis X, and when the joint portion J is welded, the rotation axis X The boss portion 83 on the inner diameter side and the inclined portion 922 on the outer diameter side of the joint J are brought into contact with the inner diameter side cover portion 30 and the outer diameter side cover portion 40, and then the clutch hub 90 is displaced. And a support base 10 (support member) for rotating the sun gear 80 assembled with the rotation about the rotation axis X,
The outer diameter side cover part 40 is
A cylindrical support wall portion 41 that is held by the cover holding member 20 and is relatively rotatable with respect to the cover holding member 20;
And a contact member 42 that is held by the support wall portion 41 and that is movable with respect to the support wall portion 41 in the direction of the rotation axis X and that contacts the inclined portion 922 when the joint portion J is welded. did.

このように構成すると、接合部Ｊの溶接時に傾斜部９２２が当接する外径側カバー部４０の当接部材４２が、回転軸Ｘ方向に移動可能となっており、製造誤差などにより回転軸Ｘ方向における傾斜部９２２の位置などにバラツキがあっても当接部材４２が回転軸Ｘ方向に変位することで、傾斜部９２２の位置のバラツキに起因して、傾斜部９２２や支持壁部４１に、応力が外径側カバー部４０側から作用することがない。
これにより、傾斜部９２２や支持壁部４１に変形が生じて、接合部Ｊの外径側に隙間が生じることがないので、溶接時に発生するスパッタが外径側に飛散することを好適に防止できる。 If comprised in this way, the contact member 42 of the outer diameter side cover part 40 with which the inclination part 922 will contact | abut at the time of welding of the junction part J can be moved to the rotation axis X direction, and rotation axis X is caused by a manufacturing error etc. Even if there is a variation in the position of the inclined portion 922 in the direction, the contact member 42 is displaced in the direction of the rotation axis X, so that the inclined portion 922 or the support wall portion 41 is caused by the variation in the position of the inclined portion 922. The stress does not act from the outer diameter side cover portion 40 side.
Thereby, since the deformation | transformation arises in the inclination part 922 and the support wall part 41, and a clearance gap does not arise in the outer diameter side of the junction part J, it prevents suitably that the sputter | spatter which generate | occur | produces at the time of welding scatters to the outer diameter side. it can.

（２）支持台１０は、回転軸Ｘを鉛直線に沿わせた向きでカバー保持部材２０の下方に配置されて、接合部Ｊの溶接時に、クラッチハブ９０の傾斜部９２２を、支持台１０側の下方から当接部材４２に当接させて、当接部材４２を傾斜部９２２に載置させるように構成されており、
当接部材４２の質量を、クラッチハブ９０が傾斜部９２２に載置された当接部材４２により変形する質量未満に設定した。 (2) The support base 10 is disposed below the cover holding member 20 with the rotation axis X along the vertical line, and the inclined portion 922 of the clutch hub 90 is connected to the support base 10 when the joint J is welded. The abutting member 42 is brought into contact with the abutting member 42 from the lower side, and the abutting member 42 is placed on the inclined portion 922.
The mass of the contact member 42 was set to be less than the mass by which the clutch hub 90 is deformed by the contact member 42 placed on the inclined portion 922.

このように構成すると、傾斜部９２２に載置された当接部材４２の質量で、クラッチハブ９０の傾斜部９２２周りが変形することを防止できるので、接合部Ｊの外径側に隙間が生じて、溶接時に発生するスパッタが接合部Ｊの外径側に飛散することを好適に防止できる。   With this configuration, the mass of the abutting member 42 placed on the inclined portion 922 can prevent the surroundings of the inclined portion 922 of the clutch hub 90 from being deformed, so that a gap is generated on the outer diameter side of the joint portion J. Thus, it is possible to suitably prevent the spatter generated during welding from scattering to the outer diameter side of the joint J.

（３）当接部材４２には、回転軸Ｘ方向から傾斜部９２２に当接する傾斜面４２０ａが、傾斜部９２２との対向部に設けられており、傾斜面４２０ａの回転軸Ｘに直交する水平線ＨＬに対する傾斜角θを、傾斜部９２２の回転軸Ｘ２直交する水平線ＨＬに対する傾斜角θとを一致させた構成とした。 (3) The abutting member 42 is provided with an inclined surface 420a that abuts the inclined portion 922 from the rotation axis X direction at a portion facing the inclined portion 922, and a horizontal line orthogonal to the rotation axis X of the inclined surface 420a. The inclination angle θ with respect to HL is made to coincide with the inclination angle θ with respect to the horizontal line HL orthogonal to the rotation axis X2 of the inclined portion 922.

このように構成すると、当接部材４２の傾斜面４２０ａとクラッチハブ９０の傾斜部９２２とが面接触するので、当接部材４２がクラッチハブ９０の傾斜部９２２に点接触する場合に比べて、当接部材４２から傾斜部９２２に作用する応力を低減できる。
よって、クラッチハブ９０の傾斜部９２２周りの変形をより確実に防止できるので、接合部Ｊの外径側に隙間が生じて溶接時に発生するスパッタが、接合部Ｊの外径側に飛散することを好適に防止できる。 If comprised in this way, since the inclined surface 420a of the contact member 42 and the inclination part 922 of the clutch hub 90 surface-contact, compared with the case where the contact member 42 contacts the inclination part 922 of the clutch hub 90 in a point contact. The stress acting on the inclined portion 922 from the contact member 42 can be reduced.
Therefore, deformation around the inclined portion 922 of the clutch hub 90 can be more reliably prevented, so that a gap is generated on the outer diameter side of the joint portion J, and spatter generated during welding is scattered on the outer diameter side of the joint portion J. Can be suitably prevented.

（４）当接部材４２は、支持壁部４１の内径に整合する外径Ｄ２の基部４２０を有しており、基部４２０における支持壁部４１内に挿入された部位の外周面には、回転軸Ｘ方向に所定幅（長さＬ２）を有する係合溝４２１（凹溝）が、回転軸Ｘ周りの周方向に所定間隔で複数設けられており、
支持壁部４１には、当該支持壁部４１を径方向に貫通させた先端部を係合溝４２１に係合させた取付ボルト４６（位置決め部材）が設けられている構成とした。 (4) The abutting member 42 has a base portion 420 having an outer diameter D2 that matches the inner diameter of the support wall portion 41, and the outer peripheral surface of a portion of the base portion 420 inserted into the support wall portion 41 is rotated. A plurality of engagement grooves 421 (concave grooves) having a predetermined width (length L2) in the axis X direction are provided at predetermined intervals in the circumferential direction around the rotation axis X.
The support wall 41 is provided with a mounting bolt 46 (positioning member) in which a distal end portion that penetrates the support wall 41 in the radial direction is engaged with the engagement groove 421.

このように構成すると、当接部材４２に係合溝４２１を設け、この係合溝４２１に支持壁部４１を貫通させた取付ボルト４６の先端部を係合させるという簡単な構成で、支持壁部４１において当接部材４２を、回転軸Ｘ方向に進退移動可能に保持させることができる。   With this configuration, the contact groove 42 is provided with the engagement groove 421, and the front end of the mounting bolt 46 that penetrates the support wall 41 is engaged with the engagement groove 421. In the portion 41, the contact member 42 can be held so as to be movable back and forth in the rotation axis X direction.

（５）取付ボルト４６は、支持壁部４１に対して着脱自在とされて、当接部材４２を交換可能に構成した。 (5) The mounting bolt 46 is configured to be detachable from the support wall portion 41 so that the contact member 42 can be replaced.

このように構成すると、傾斜角θの異なる当接部材４２を複数用意しておくことで、クラッチハブ９０の傾斜部９２２に応じて、最適の傾斜角θを有する当接部材４２を選択できるので、傾斜部９２２の回転軸Ｘ方向の位置や回転軸Ｘに対する傾斜角の異なる様々な種類のクラッチハブ９０のサンギヤ８０への固定を、溶接装置１を大幅に改修する必要なく行うことができる。   With this configuration, by preparing a plurality of contact members 42 having different inclination angles θ, the contact member 42 having the optimum inclination angle θ can be selected according to the inclined portion 922 of the clutch hub 90. The various kinds of clutch hubs 90 having different inclination angles with respect to the position of the inclined portion 922 in the rotational axis X and the rotational axis X can be fixed to the sun gear 80 without the need to significantly modify the welding apparatus 1.

（６）内径側カバー部３０を、
保持部材２００の軸部３１の下部に設けた保持部３１１で、保持部材２００に対して相対回転可能に設けられていると共に、接合部Ｊの内径側のボス部８３にと右折する環状壁部３５３を有するカバー部材３５と、
カバー部材３５を、回転軸Ｘ方向に変位可能に保持するスプリングＳｐ（弾性部材）と、から構成した。 (6) The inner diameter side cover 30 is
An annular wall portion that is provided at a lower portion of the shaft portion 31 of the holding member 200 so as to be relatively rotatable with respect to the holding member 200 and that turns rightward to the boss portion 83 on the inner diameter side of the joint portion J. A cover member 35 having 353;
The cover member 35 is composed of a spring Sp (elastic member) that holds the cover member 35 so as to be displaceable in the rotation axis X direction.

このように構成すると、軸部３１の保持部３１１においてカバー部材３５は、回転軸Ｘ方向への変位と、軸部３１に対する相対回転が許容された状態で設けられることになる。
そのため、接合部Ｊの内径側のボス部８３が、カバー部材３５の環状壁部３５３に回転軸Ｘ方向から当接すると、カバー部材３５は、スプリングＳｐを圧縮しながら、支持台１０側に変位する結果、カバー部材３５が、スプリングＳｐの圧縮量に応じて決まる付勢力で、サンギヤ８０を支持台１０の支持部１００に押しつけるので、クラッチハブ９０が組み付けられたサンギヤ８０が、回転軸Ｘ方向で予め設定された所定位置に位置決めされる。
よって、回転軸Ｘ方向におけるクラッチハブ９０の傾斜部９２２の位置を、予定した位置により正確に配置できる。 If comprised in this way, in the holding | maintenance part 311 of the axial part 31, the cover member 35 will be provided in the state to which the displacement to the rotating shaft X direction and the relative rotation with respect to the axial part 31 were permitted.
Therefore, when the boss portion 83 on the inner diameter side of the joint portion J comes into contact with the annular wall portion 353 of the cover member 35 from the rotational axis X direction, the cover member 35 is displaced toward the support base 10 side while compressing the spring Sp. As a result, the cover member 35 presses the sun gear 80 against the support portion 100 of the support base 10 with an urging force determined according to the compression amount of the spring Sp, so that the sun gear 80 to which the clutch hub 90 is assembled moves in the direction of the rotation axis X. Is positioned at a predetermined position set in advance.
Therefore, the position of the inclined portion 922 of the clutch hub 90 in the direction of the rotation axis X can be accurately arranged according to the planned position.

１ 溶接装置
１０ 支持台
２０ カバー保持部材
３０ 内径側カバー部
３１ 軸部
３５ カバー部材
４０ 外径側カバー部
４１ 支持壁部
４１ａ 下端
４２ 当接部材
４６ 取付ボルト
４７ 取付部材
８０ サンギヤ
８１ 基部
８１ａ 面
８２ 歯部
８３ ボス部
８３ａ 外周
９０ クラッチハブ
９１ 周壁部
９２ 底壁部
１００ 支持部
１０１ 嵌合部
２００ 保持部材
２００ａ 下面
３１１ 保持部
３１２ 支持穴
３１３ 軸収容穴
３１４ スプリング収容穴
３５１ 上壁部
３５２ 軸部
３５３ 環状壁部
３５３ａ 下端
４２０ 基部
４２０ａ 傾斜面
４２１ 係合溝
４２１ａ 上辺
４６１ 軸部
９２１ 連結部
９２１ａ 内周
９２２ 傾斜部
９２３ 外縁部
Ｂ ベアリング
ＥＢ 電子ビーム
ＨＬ 水平線
Ｊ 接合部
Ｓｐ スプリング
Ｗｅ 溶接部
Ｘ 回転軸 DESCRIPTION OF SYMBOLS 1 Welding apparatus 10 Support stand 20 Cover holding member 30 Inner diameter side cover part 31 Shaft part 35 Cover member 40 Outer diameter side cover part 41 Support wall part 41a Lower end 42 Abutting member 46 Mounting bolt 47 Mounting member 80 Sun gear 81 Base part 81a Surface 82 Tooth part 83 Boss part 83a Outer part 90 Clutch hub 91 Peripheral wall part 92 Bottom wall part 100 Support part 101 Fitting part 200 Holding member 200a Lower surface 311 Holding part 312 Support hole 313 Shaft receiving hole 314 Spring receiving hole 351 Upper wall part 352 Shaft part 353 Annular wall portion 353a Lower end 420 Base 420a Inclined surface 421 Engaging groove 421a Upper side 461 Shaft portion 921 Connecting portion 921a Inner circumference 922 Inclined portion 923 Outer edge portion B Bearing EB Electron beam HL Horizontal line J Joint Sp Spring X Welding portion Sp Spring We Welding portion

Claims (6)

第１被溶接部材と、当該第１被溶接部材に組み付けられた第２被溶接部材との接合部が、前記第１被溶接部材の回転軸を所定間隔で囲む円環状を成すと共に、前記第２被溶接部材が、前記回転軸の軸方向から見た前記接合部の外径側に、前記回転軸に対して傾斜する傾斜部を有しており、
前記第２被溶接部材が組み付けられた前記第１被溶接部材を、前記回転軸回りに回転させながら前記接合部を溶接する溶接装置であって、
前記接合部の溶接時に、前記接合部の内径側に当接する内径側環状カバー部と、
前記接合部の溶接時に、前記傾斜部が当接する外径側環状カバー部と、
前記内径側環状カバー部と前記外径側環状カバー部とを保持するカバー保持部材と、
前記第２被溶接部材が組み付けられた前記第１被溶接部材を、前記内径側環状カバー部および前記外径側環状カバー部から前記回転軸方向に離間させた位置で支持すると共に、前記接合部を溶接する際に、前記回転軸方向に変位して、前記接合部の内径側と前記傾斜部とに、前記内径側環状カバー部と外径側環状カバー部とをそれぞれ当接させたのち、前記第２被溶接部材が組み付けられた前記第１被溶接部材を前記回転軸回りに回転させる支持部材と、を有すると共に、
前記外径側環状カバー部を、
前記カバー保持部材に保持されるとともに、当該カバー保持部材に対して相対回転可能に設けられた筒状の支持壁部と、
前記支持壁部に保持されるとともに、当該支持壁部に対して前記回転軸方向に移動可能に設けられて、前記接合部の溶接時に前記傾斜部に当接する当接部材と、から構成したことを特徴とする溶接装置。 A joint portion between the first welded member and the second welded member assembled to the first welded member forms an annular shape surrounding the rotation axis of the first welded member at a predetermined interval, and 2 The member to be welded has an inclined portion that is inclined with respect to the rotating shaft on the outer diameter side of the joint portion viewed from the axial direction of the rotating shaft;
A welding apparatus for welding the joint while rotating the first welded member assembled with the second welded member around the rotation axis,
An inner diameter side annular cover portion that contacts the inner diameter side of the joint portion when welding the joint portion;
An outer diameter side annular cover portion with which the inclined portion abuts when welding the joint portion;
A cover holding member for holding the inner diameter side annular cover portion and the outer diameter side annular cover portion;
The first welded member to which the second welded member is assembled is supported at a position spaced apart from the inner diameter side annular cover part and the outer diameter side annular cover part in the rotational axis direction, and the joint part. Are welded to the inner diameter side of the joint portion and the inclined portion, and the inner diameter side annular cover portion and the outer diameter side annular cover portion are brought into contact with each other, And a support member that rotates the first welded member assembled with the second welded member around the rotation axis,
The outer diameter side annular cover part,
A cylindrical support wall that is held by the cover holding member and is provided so as to be rotatable relative to the cover holding member;
And a contact member that is held by the support wall portion and is movable in the direction of the rotation axis with respect to the support wall portion, and contacts the inclined portion when welding the joint portion. Welding device characterized by. 前記支持部材は、前記カバー保持部材の下方に配置されて、前記接合部の溶接時に、前記傾斜部を下方から当接部材に当接させて、前記当接部材を前記傾斜部に載置させるように構成されており、
前記当接部材の質量を、前記第２被溶接部材が前記傾斜部に載置された前記当接部材により変形する質量未満に設定したことを特徴とする請求項１に記載の溶接装置。 The support member is disposed below the cover holding member, and when the joint portion is welded, the inclined portion is brought into contact with the contact member from below, and the contact member is placed on the inclined portion. Is configured as
2. The welding apparatus according to claim 1, wherein a mass of the contact member is set to be less than a mass by which the second welded member is deformed by the contact member placed on the inclined portion. 前記当接部材には、前記回転軸方向から前記傾斜部に当接する傾斜面が、前記傾斜部との対向部に設けられており、前記傾斜面の前記回転軸を基準とした傾斜角を、前記傾斜部の前記回転軸を基準とした傾斜角とを一致させたことを特徴とする請求項１または請求項２に記載の溶接装置。   In the contact member, an inclined surface that contacts the inclined portion from the rotation axis direction is provided at a portion facing the inclined portion, and an inclination angle of the inclined surface with respect to the rotation axis is defined as The welding apparatus according to claim 1, wherein an inclination angle of the inclined portion with respect to the rotation axis is made coincident. 前記当接部材は、前記支持壁部の内径に整合する外径の基部を有しており、前記基部における前記支持壁部内に挿入された部位の外周面には、前記回転軸方向に所定幅を有する凹溝が、前記回転軸周りの周方向に所定間隔で複数設けられており、
前記支持壁部には、当該支持壁部を径方向に貫通させた先端部を前記凹溝に係合させた位置決め部材が設けられていることを特徴とする請求項１から請求項３の何れか一項に記載の溶接装置。 The abutting member has a base portion having an outer diameter matching the inner diameter of the support wall portion, and an outer peripheral surface of a portion of the base portion inserted into the support wall portion has a predetermined width in the rotation axis direction. A plurality of concave grooves having a predetermined interval in the circumferential direction around the rotation axis,
4. The positioning member according to claim 1, wherein a positioning member is provided on the support wall portion, and a distal end portion that penetrates the support wall portion in a radial direction is engaged with the concave groove. A welding apparatus according to claim 1. 前記位置決め部材は、前記支持壁部に対して着脱自在とされて、前記当接部材を交換可能としたことを特徴とする請求項４に記載の溶接装置。   The welding apparatus according to claim 4, wherein the positioning member is detachable with respect to the support wall portion, and the contact member can be replaced. 前記内径側環状カバー部を、
前記カバー保持部材で、当該カバー保持部材に対して相対回転可能に設けられた筒状の当接部を前記回転軸方向に変位可能に保持する弾性部材と、から構成したことを特徴とする請求項１から請求項５の何れか一項に記載の溶接装置。 The inner diameter side annular cover part,
The cover holding member comprises an elastic member that holds a cylindrical abutting portion provided to be rotatable relative to the cover holding member so as to be displaceable in the rotation axis direction. The welding apparatus according to any one of claims 1 to 5.
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