PROBLEM TO BE SOLVED: To provide a remote-controlled actuator that allows the posture of a tool provided at the tip of an elongated pipe to be changed by remote control operation while allowing the smooth posture change of the tool without using a lubricant or a coating.SOLUTION: The remote-controlled actuator includes: an elongated spindle guide 3 a tip member 2 mounted at the tip of the spindle guide so as to freely change its posture and so as to rotatably support a tool 1 and a drive-part housing 4a to which the base end of the spindle guide 3 is connected. The spindle guide 3 internally includes: a rotary shaft 22 for transmitting rotation of a tool-rotating drive source inside the drive-part housing 4a and a posture operating member 31 that changes the posture of the tip member 2 by drive of a posture-changing drive source inside the drive-part housing 4a. When an angle formed by a perpendicular PL vertical with respect to a tangent at a contact point P between the tip member 2 and the posture operating member 31, and the center line CL2 of the rotary shaft 22 is set as &alpha, it is set to be &alpha>0°.COPYRIGHT: (C)2010,JPO&INPIT【課題】 細長いパイプ部の先端に設けられた工具の姿勢を遠隔操作で変更することができ、しかも潤滑剤やコーティングを用いずに工具の滑らかな姿勢変更が可能な遠隔操作型アクチュエータを提供する。【解決手段】 細長形状のスピンドルガイド部3と、その先端に姿勢変更自在に取付けられ工具1を回転自在に支持する先端部材2と、スピンドルガイド部3の基端が結合された駆動部ハウジング4aとを備える。スピンドルガイド部3は内部に、駆動部ハウジング4a内の工具回転用駆動源の回転を工具に伝達する回転軸22と、駆動部ハウジング4a内の姿勢変更用駆動源の駆動により先端部材2を姿勢変更させる姿勢操作部材31とを有する。先端部材2と姿勢操作部材31の接触点Pにおける接線に対し垂直な垂線PLと回転軸22の中心線CL2とがなす角度をαとした場合、α>0°である。【選択図】 図2
