PARALLEL LINK MECHANISM AND ORIGIN POSITIONING MEMBER OF THE SAME

To provide a parallel link mechanism which enables positioning of an origin without interfering with an end effector and a cable, and to provide an origin positioning member of the parallel link mechanism.SOLUTION: A parallel link mechanism 1 connects a tip side link hub 3 with a base end side link...

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1. Verfasser: SATO NAOHIKO
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:To provide a parallel link mechanism which enables positioning of an origin without interfering with an end effector and a cable, and to provide an origin positioning member of the parallel link mechanism.SOLUTION: A parallel link mechanism 1 connects a tip side link hub 3 with a base end side link hub 2 in a manner that an attitude of the tip side link hub 3 may change through two or more sets of link mechanisms 4. Each link mechanism 4 includes a spherical link mechanism having: a based end side end link member 5 in which one end is rotatably connected to the base end side link hub 2; a tip side end link member 6 in which one end is rotatably connected to the tip side link hub 3, and a center link member 7 in which both ends are rotatably connected to the other ends of the base end side and tip side end link members 5, 6. An origin positioning member 20 which uniquely determines positions and attitudes of the base end side link hub 2 and the tip side link hub 3 is detachably provided. During origin positioning, the origin positioning member 20 is fixed to side edge parts 22, 23 of the base end side and tip side link hubs 2, 3.SELECTED DRAWING: Figure 1 【課題】エンドエフェクタやケーブルと干渉することなく、原点位置決めを行うことができるパラレルリンク機構およびその原点位置決め部材を提供する。【解決手段】パラレルリンク機構1は、基端側のリンクハブ2に対し先端側のリンクハブ3を、2組以上のリンク機構4を介して姿勢を変更可能に連結する。各リンク機構4は、基端側のリンクハブ2に一端が回転可能に連結された基端側の端部リンク部材5と、先端側のリンクハブ3に一端が回転可能に連結された先端側の端部リンク部材6と、基端側および先端側の端部リンク部材5,6の他端に両端が回転可能に連結された中央リンク部材7とを有する球面リンク機構を備えている。基端側リンクハブ2と先端側リンクハブ3の位置と姿勢を一意に決定する原点位置決め部材20が着脱可能に設けられる。原点位置決め時に、原点位置決め部材20が基端側および先端側リンクハブ2,3の側縁部22,23に固定される。【選択図】図1