公开(公告)号：US20130160583A1

公开(公告)日：2013-06-27

申请号：US13709240

申请日：2012-12-10

Applicant: Hitachi, Ltd.

Inventor： Takamasa KAI ,  Isao HAYASE ,  Hiroyuki YAMADA

IPC: F16H25/12

CPC classification number: F16H25/2261 ,  Y10T74/18576

Abstract: Disclosed is a roller screw including a screw shaft and a nut cage with the screw shaft inserted therein, the roller screw being adapted to convert a rotary motion of either the screw shaft or the cage into a rectilinear or linear motion of the other; the roller screw further including: a plurality of rollers, each formed to roll along a flank surface la of the screw shaft; and plurality of roller bearings, each formed to support one of the rollers so as to allow the roller to rotate. At least one of the roller bearings is retained in the case so as to move forward and backward in an axial direction of rotation of the corresponding roller supported by the roller bearing.

Abstract translation: 公开了一种滚子丝杠，其包括螺杆轴和螺母保持器，螺杆轴插入其中，滚子螺杆适于将螺杆轴或保持架的旋转运动转换为彼此的直线或直线运动; 所述滚子丝杠还包括：多个辊，每个辊被形成为沿着所述螺杆轴的侧面1a滚动; 和多个滚子轴承，每个滚子轴承各自形成为支撑一个辊，以允许辊旋转。 至少一个滚子轴承保持在壳体中，以便在由滚子轴承支撑的相应滚子的轴向旋转方向上前后移动。