| 摘要 |
PROBLEM TO BE SOLVED: To provide a tapered thread rolling head for an automatic release type tube capable of mitigating impacts generated when completing the thread rolling, and preventing breakage of a cutter sweep mechanism. SOLUTION: The tapered thread rolling head comprises a bearing plate 33 which is slidably supported by a plurality of guide grooves 36 formed radially on the inner side of a lid before and behind a housing 30 and has an inclined surface 33b on the outer side in the radial direction, a thread rolling roller 35 which is rotatably supported by the bearing plate 33, a cam ring 31 which is turned in the housing 30 and has a cam inclined surface 31a formed facing the inclined surface 33b of the bearing plate 33, a lever 44 which is abutted on the inclined surface to prevent any movement of a cam member 45 to be interlocked with the cam ring 31, and a stopper 41 to be pressed by a tube to be worked. When the thread is rolled to the predetermined length, the inclined surface of the lever 44 to be moved in an interlocking manner with the pressing movement of the stopper is detached from the cam member 45, the cam ring 31 is rotated, the bearing plate 33 and the thread rolling roller 35 are moved outwardly in the radial direction, and detached and released from the tube to be worked. COPYRIGHT: (C)2005,JPO&NCIPI |
