| 摘要 |
<p>PROBLEM TO BE SOLVED: To reduce processing burden to deal with a manufacturing error of a steel pipe and diameter extension of a ring as well.SOLUTION: A ring press-fitting device which externally fits a thin ring 32 into an end of a steel pipe 31 comprises: a front board 1 to which an end face of a steel pipe 31 is pressed in press-fitting; and a ring clamp 2 which supports a ring 32 to be pressed in a press-fitting direction, in which the front board 1 consists of a fixed front board 5 and a movable front board 6; the ring clamp 2 is pressed to an outer periphery of the ring 2 by urging force of an elastic body 8; a projection 9 engaging with the ring 32 is provided at an inner periphery of the ring clamp 2; the ring clamp 2 is supported in the press-fitting direction and moved forward by the movable front board 6 brought close to the fixed front board 5 in a primary press-fitting stage, and by the movable front board 6 separated from the fixed front board 5 in a secondary press-fitting stage; the end face of the steel pipe 31 avoids the movable front board 6 to contact the fixed front board 5; and the ring 32 is pressed and fitted into the steel pipe 31 in conjunction with the engagement of the projection 9 with the ring clamp 2.</p> |
