| 摘要 |
PROBLEM TO BE SOLVED: To provide a technology which is effective for assembling a planetary gear mechanism in a state of a good rotation balance.SOLUTION: An assembling method of a planetary gear mechanism according to the present invention includes: a first step for fixing an output member 160 which is relatively and rotatably supported by a ring gear 130 via a bearing 150 arranged at an external peripheral face of the ring gear 130 to a fixture 11; a second step for rotating the ring gear 130 in a first direction by revolving a plurality of planetary gears 120, respectively, by rotating a sun gear 110 in the first direction in a holding state of a planetary carrier 140 in which the positional adjustment of the planetary carrier 140 (in the radial direction) with respect to the ring gear 130 is permitted; and a third step for fixing the planetary carrier 140 to the output member 160 so that the positional adjustment of the planetary carrier 140 becomes impossible in a state that the rotation of the sun gear 110 in the first direction is maintained. |
