公开(公告)号：US20040259677A1

公开(公告)日：2004-12-23

申请号：US10870153

申请日：2004-06-18

Applicant: Harmonic Drive Systems Inc.

Inventor： Norio Shirokoshi

IPC: F16H037/06 ,  F16H057/02

CPC classification number: F16H1/2818 ,  F16H1/2845 ,  F16H1/2863 ,  F16H1/46 ,  Y10T74/2186

Abstract: A planetary gear drive includes a thin, elastically resilient internal gear arranged within an annular housing, in which there is also a carrier that is rotatably supported by a pair of tapered roller bearings. A sun gear located concentrically within a cylindrical portion of the carrier is arranged so that the sun gear is capable of floating movement perpendicular to the drive axis. Any uneven meshing caused by error in the assembly or manufacture of the gears is automatically cancelled by radial elastic deformation of the internal gear and the floating movement of the sun gear, reducing backlash. Moreover, the use of two tapered roller bearings makes it possible to increase the moment capacity of the planetary gear drive.

Abstract translation: 行星齿轮传动装置包括布置在环形壳体内的细的弹性弹性内齿轮，其中还有一个由一对圆锥滚子轴承可转动地支承的托架。 太阳齿轮同心地布置在载体的圆柱形部分内，使得太阳齿轮能够垂直于驱动轴线浮动。 由于齿轮组装或制造中的误差引起的任何不均匀的啮合都会通过内齿轮的径向弹性变形和太阳齿轮的浮动运动自动消除，从而减少齿隙。 此外，使用两个圆锥滚子轴承可以增加行星齿轮传动的力矩能力。