公开(公告)号：US20110179896A1

公开(公告)日：2011-07-28

申请号：US13014308

申请日：2011-01-26

申请人： Kenji HIRAKU ,  Isao Hayase

发明人： Kenji HIRAKU ,  Isao Hayase

IPC分类号： F16H25/22

CPC分类号： F16H25/2247 ,  E02F3/425 ,  E02F3/427 ,  Y10T74/19786

摘要： A lead screw apparatus includes a screw shaft having a spiral channel on an outer circumferential surface thereof, a plurality of rollers rotatable with contact with the spiral channel, and a cage rotatably supporting the rollers for conversion between relative rotation and linear motions between the screw shaft and the cage bi-directionally. The lead screw apparatus further includes a bearing and a holder 6 supported by the case for supporting the bearing. An inner ring of the bearing and the roller are integrally formed. An outer ring of the bearing has a protrusion on an outer circumferential surface thereof on a side closer to the screw shaft. Rollers of the bearing having a circular truncated cone shape are disposed in the bearing in a circumferential direction with substantially no gap. The outer ring has a thread part to shift the bearing and the roller.

摘要翻译： 螺杆装置包括在其外周面上具有螺旋形通道的螺杆轴，可与螺旋通道接触的多个滚子，以及可旋转地支撑滚子的保持架，用于在螺杆轴之间的相对旋转和线性运动之间转换 和笼子双向。 导螺杆装置还包括轴承和由用于支撑轴承的壳体支撑的保持器6。 轴承的内圈和辊一体形成。 轴承的外圈在靠近螺杆轴的一侧的外周面上具有突起。 具有圆形截锥形的轴承的滚子在圆周方向上基本上没有间隙地设置在轴承中。 外圈具有用于移动轴承和滚子的螺纹部分。