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    • 4. 发明公开
    • VORRICHTUNG ZUR UMWANDLUNG EINER DREH- IN EINE AXIALBEWEGUNG
    • VORRICHTUNG ZUR UMWANDLUNG EINER DREH-在EINE AXIALBEWEGUNG
    • EP1218651A1
    • 2002-07-03
    • EP00993874.7
    • 2000-12-12
    • Wittenstein AG
    • BUTSCH, MichaelHENLE, Jörg
    • F16H25/24F16H25/22
    • F16H25/2252Y10T74/19781Y10T74/19791Y10T74/19795
    • The invention relates to a device for converting rotational movement into axial movement. Said device comprises planetary rollers (7) driven by a drive shaft (5) projecting from a drive device (1) and maintained peripherally at a same distance, in addition to a push body (3) axially displaced by the planetary rollers (7), wherein the planetary rollers (7) are peripherally fixed on a support (6) which is driven around the axis thereof, said rollers being rotationally mounted and provided with peripheral grooves or threaded grooves; the support (6) is connected in a toque fixed manner to the drive shaft (5) rotating around its axis; the planetary rollers (7) engage in at least one thread-like groove of the push body (3) that is displaced along the axis of the support (6) by means of their peripheral grooves or threaded grooves; the support (6) drives the planetary rollers (7); the push body (3) is embodied as a hollow body encompassing the planetary rollers (7); a bearing body (9) that has peripheral bearing grooves (11) or threaded grooves and that can rotate independently around its axis relative to the drive shafts (5) and concentrically inside the planetary rollers (7) is provided in the center of the support (6). The bearing grooves (11) or threaded grooves of said bearing body engage in the corresponding peripheral grooves or threaded grooves of the planetary rollers (7). The invention aims at providing simple and functionally safe mounting of the bearing body (9).
    • 本发明涉及一种用于将旋转运动转换成轴向运动的装置。 除了由行星辊(7)轴向移动的推动体(3)之外,所述装置还包括由从驱动装置(1)突出的驱动轴(5)驱动并且周向保持相同距离的行星辊(7) 其中,所述行星辊(7)周向地固定在围绕其轴线驱动的支撑件(6)上,所述辊子旋转地安装并且设置有周向凹槽或螺纹槽; 支架(6)以转矩固定的方式连接到绕其轴线旋转的驱动轴(5)上; 行星辊(7)接合推动体(3)的至少一个螺纹状凹槽,所述至少一个螺纹状凹槽借助于其周边凹槽或螺纹凹槽沿着支撑件(6)的轴线移动; 支撑件(6)驱动行星辊(7); 推动体(3)构成为包围行星辊(7)的空心体; 具有周向支承槽(11)或螺纹槽并且能够围绕其轴线相对于驱动轴(5)独立旋转且同心地在行星辊(7)内部的支承体(9)设置在支承件 (6)。 所述轴承体的轴承槽(11)或螺纹槽啮合在行星辊(7)的相应周边槽或螺纹槽中。 本发明旨在提供轴承体(9)的简单且功能安全的安装。
    • 7. 发明公开
    • Rotary actuator with backlash elimination
    • Drehantrieb mit Spielbeseitigung。
    • EP0190400A1
    • 1986-08-13
    • EP85113350.4
    • 1985-10-21
    • WEYER, Paul P.
    • WEYER, Paul P.
    • F15B15/08
    • F15B15/068B60G21/0553F16H25/2209Y10T74/18728Y10T74/19623Y10T74/19795Y10T74/19902
    • A fluid-powered helical actuator including a cylindrical body (412); a rotatable output (416) member supported for rotation relative to the body (412) and connectable to an external device; first and second independently rotatable sleeves (442,450) reciprocally mounted within said body; a piston (444) reciprocally mounted within the body for application of fluid pressure to one or the other opposing sides thereof to produce axial movement, the piston operatively engages at least one or the other of the sleeves (442) to axially move the sleeves in response to axial movement of the piston; torque-transmitting elements (462) for transmitting torque between said first sleeve (442) and the body (412). between the first sleeve (442) and the output member (416), between the second sleeve (450) and the output member (416); and between the second sleeve (450) and the body (412). An adjustment member (464) is provided for selectively moving the first sleeve (442) relative to the second sleeve (450) to axially preload the sleeves for eliminating backlash in the torque-transmitting elements as the piston (444) moves from one axial direction to the other in response to selective application of fluid pressure to the piston, In one embodiment the output member has two parts which are oppositely rotated to preload the sleeves. In other embodiments the axial preloading is accomplished by axial separation of the sleeves using a resilient member or set screws.
    • 一种流体动力螺旋致动器,包括圆柱体(412); 可旋转输出(416)构件,其被支撑成相对于主体(412)旋转并可连接到外部设备; 第一和第二独立可旋转的套筒(442,450),其相互安装在所述主体内; 活塞(444),其往复安装在主体内,用于将流体压力施加到其一个或另一个相对的侧面以产生轴向运动,所述活塞可操作地接合至少一个或另一个套筒(442)以使所述套筒 响应于活塞的轴向运动; 用于在所述第一套筒(442)和主体(412)之间传递扭矩的扭矩传递元件(462),位于第二套筒(450)和输出构件(450)之间的第一套筒(442)和输出构件(416)之间 416); 并且在第二套筒(450)和主体(412)之间。 提供一个调节构件(464),用于相对于第二套筒(450)选择性地移动第一套筒(442)以轴向地预加载套筒,以消除扭矩传递元件中的间隙,因为活塞(444)从一个轴向移动 响应于选择性地向活塞施加流体压力。 在一个实施例中,输出构件具有两个部分,其相反地旋转以预加载套筒。 在其他实施例中,通过使用弹性构件或固定螺钉轴向分离套筒来实现轴向预加载。