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    • 6. 发明授权
    • Roller screw and method of circulating rollers in roller screw
    • 滚子螺杆和滚子丝杠循环方法
    • US08739646B2
    • 2014-06-03
    • US12744175
    • 2008-11-14
    • Kentaro NishimuraTetsuya MiuraAkimasa YoshidaSoshi MiyaharaYusuke TodorokiTakashi Sakuyama
    • Kentaro NishimuraTetsuya MiuraAkimasa YoshidaSoshi MiyaharaYusuke TodorokiTakashi Sakuyama
    • F16H25/22
    • F16H25/2247F16H2025/2271Y10T74/19749Y10T74/19772
    • There is provided a roller screw in which a twisted amount of an unloaded return path is reduced.The roller screw has a screw shaft 1 having a spiral roller-rolling surface 1a on an outer peripheral surface thereof; a nut 2 having a spiral loaded roller-rolling surface 2a on an inner peripheral surface thereof, the spiral loaded roller-rolling surface being opposed to the roller-rolling surface 1a of the screw shaft 1; a circulation member 7 arranged in the nut 2 and formed to have an unloaded return path 8 connecting one end and the other end of the loaded roller-rolling surface 2a, whose turn number is less than one, of the nut 2; and a plurality of rollers 4 arranged in a one-turn roller circulation path composed by a loaded roller-rolling path 6 and the unloaded return path 8. The circulation member 7 guides the rollers which have moved and arrived at the one end of the loaded roller-rolling path 6 having less than one turn, to the unloaded return path 8, and then returns the rollers to the other end of the loaded roller-rolling path 6 having less than one turn. The number of turns of the loaded roller-rolling path 6 is set to be less than one turn, whereby the rollers 4 which have arrived at one end of the loaded roller-rolling path 6 can be transferred to the other end of the loaded roller-rolling path 6 without changing their attitudes.
    • 提供了一种滚子丝杠,其中卸载的返回路径的扭转量减小。 滚子丝杠具有在其外周面上具有螺旋滚子滚动面1a的螺杆轴1; 在其内周面上具有螺旋负载的滚动滚动面2a的螺母2,与螺旋轴1的滚动滚动面1a相对的螺旋加载滚动滚动面; 布置在螺母2中并且形成为具有将螺母2的转数小于1的加载的滚动滚动面2a的一端与另一端连接的无载返回路径8的循环构件7; 以及多个辊4,其布置在由加载的滚动滚动路径6和未加载的返回路径8组成的单圈辊循环路径中。循环构件7引导已经移动并到达加载的滚动路径的一端的辊 具有小于1转的滚动滚道6到无载返回路径8,然后将辊返回到具有小于一圈的负载滚动滚动路径6的另一端。 负载滚动滚动路径6的匝数被设定为小于一圈,从而可以将已经到达负载的滚动滚动路径6的一端的辊4传递到负载辊的另一端 滚动路径6,而不改变他们的态度。
    • 8. 发明授权
    • Roller screw
    • 滚筒螺丝
    • US07832300B2
    • 2010-11-16
    • US10571112
    • 2004-09-02
    • Akihiro TeramachiHidekazu MichiokaHiroshi NiwaKentaro Nishimura
    • Akihiro TeramachiHidekazu MichiokaHiroshi NiwaKentaro Nishimura
    • F16H25/22
    • F16H25/2247F16H2025/2271Y10T74/19749Y10T74/19753Y10T74/19767Y10T74/19772
    • There is provided a roller screw comprising a screw shaft 1 having an outer peripheral surface in which a spiral roller rolling groove 1a is formed, a nut member 2 having an inner peripheral surface in which a spiral loaded roller rolling groove 2a is formed so as to oppose to the roller rolling groove of the screw shaft, a return pipe 4 in which a roller return passage 5 is formed so as to connect one and another ends of a loaded roller rolling passage 3 between the roller rolling groove 1a of the screw shaft 1 and the loaded roller rolling groove 2a of the nut member 2, a number of rollers 6 disposed in the loaded roller rolling passage 3 and the roller return passage 5, wherein the roller return passage 5 is twisted so that an attitude of the roller 6 changes as the roller moves in an axial direction of the return pipe 4. Such roller screw enables to provide an easy assembling and compact structure and to realize smooth circulation of the roller.
    • 本发明提供一种滚丝丝杠,其特征在于,具有:螺旋轴1,其具有形成有螺旋状滚子滚动槽1a的外周面;螺母部件2,其内周面形成有螺旋加载滚子滚动槽2a, 与螺杆轴的滚子滚动槽相对的是回转管4,其中形成有辊返回通道5,以便在螺杆轴1的滚子滚动槽1a之间连接负载滚子滚动通道3的另一端 螺母构件2的加载滚子滚动槽2a,设置在加载滚筒滚动通道3中的多个滚筒6和滚筒返回通道5,其中滚轮返回通道5被扭转,使得滚筒6的姿态改变 因为辊沿着返回管4的轴向移动。这样的滚柱螺杆使得能够提供容易的组装和紧凑的结构并且实现辊的平稳循环。
    • 9. 发明申请
    • ROLLER SCREW
    • 滚轮螺丝
    • US20100263467A1
    • 2010-10-21
    • US12740924
    • 2008-10-29
    • Soshi MiyaharaMasahiko YoshinoLina TengTsutomu TogashiTakashi SakuyamaKentaro NishimuraTetsuya MiuraAkimasa YoshidaYusuke Todoroki
    • Soshi MiyaharaMasahiko YoshinoLina TengTsutomu TogashiTakashi SakuyamaKentaro NishimuraTetsuya MiuraAkimasa YoshidaYusuke Todoroki
    • F16H25/22
    • F16H25/2247F16H2025/2271Y10T74/19767Y10T74/19772
    • Provided is a roller screw capable of preventing rollers moving from an unloaded return path to a loaded roller rolling path from coming into collision with a scooping portion. The roller screw has: a screw shaft 1 having a spiral roller rolling surface la formed on an outer peripheral surface thereof; a nut 2 having a loaded roller rolling surface 2a formed in an inner peripheral surface thereof; a circulation member 3 having an unloaded return path connecting one end of the loaded roller rolling surface 2a of the nut 2 to an opposite end thereof; and a plurality of rollers 4 arranged in a loaded roller rolling path 6 and the unloaded return path. In the circulation member 3, as a scooping portion that juts toward the screw shaft 1 and provided for scooping the rollers 4 moving in the loaded roller rolling path 6 up into the unloaded return path, a pair of diagonal corresponding parts 14 is provided which are in contact with diagonal parts 4e of a rectangular side surface of each roller 4 and a width between which is gradually narrower as they are deeper in the unloaded return path in such a manner that a cross section of the unloaded return path is closer to a rectangle.
    • 提供一种滚子丝杠,其能够防止辊从卸载返回路径移动到加载的滚动滚动路径,从而与舀出部分发生碰撞。 滚子丝杠具有:在其外周面上形成有螺旋滚子滚动面1a的螺杆轴1; 具有形成在其内周面的负载辊滚动面2a的螺母2; 具有将螺母2的负载滚子滚动面2a的一端与其另一端连接的无载返回路径的循环构件3; 以及布置在加载辊滚动路径6中的多个辊4和未加载的返回路径。 在循环构件3中,作为朝向螺杆轴1突出并且用于将在加载的滚动滚动路径6中移动的滚子4向上抽取到无载返回路径中的铲斗部分,设置有一对对角线对应部件14, 与每个辊4的矩形侧表面的对角线部分4e接触,并且其宽度在它们在无载返回路径中较深时逐渐变窄,使得卸载返回路径的横截面更接近矩形 。