发明申请
US20060162411A1 Automatic releasing-type rolling head for forming tapered thread on pipe
有权
用于在管道上形成锥形螺纹的自动释放型滚动头
- 专利标题: Automatic releasing-type rolling head for forming tapered thread on pipe
- 专利标题(中): 用于在管道上形成锥形螺纹的自动释放型滚动头
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申请号: US10564348申请日: 2003-12-04
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公开(公告)号: US20060162411A1公开(公告)日: 2006-07-27
- 发明人: Toshifumi Kubota , Masaaki Maruyama , Hideyuki Aiura , Makoto Sakaguchi
- 申请人: Toshifumi Kubota , Masaaki Maruyama , Hideyuki Aiura , Makoto Sakaguchi
- 优先权: JP2003-197931 20030716
- 国际申请: PCT/JP03/15554 WO 20031204
- 主分类号: B21H3/02
- IPC分类号: B21H3/02
摘要:
The invention is aimed at the provision of an automatic releasing-type rolling head for forming a tapered thread on a pipe in which the shock generated at the end of the thread rolling operation is alleviated and a thread automatic rolling roller retracting mechanism is not damaged. The rolling head includes shaft bearing plates 33 which are slidably supported in a plurality of guide grooves 36 radially provided on inner surfaces of the front and rear closures of the housing 30 and which are provided on their outer surfaces in the radial directions with oblique surfaces 33b, thread rolling rollers 35 rotatably supported by the shaft bearing plates 33, a cam ring 31 which rotates in the housing 30 and has cam oblique surfaces 31a opposed to the oblique surfaces 33b of the shaft bearing plates 33, a lever 44 which abuts at its oblique surface against a cam member 45 to prevent movement thereof in association with the cam ring 31 and an abutment member 41 which is pressed and moved by a thread-rolled pipe. When the to-be-rolled pipe is thread-rolled to a predetermined length, the oblique surface of the lever 44 moving in association with the movement of the abutment member 41 is gradually moved away from the cam member 45. The cam ring 31 is rotated and the shaft bearing plates 33 and the thread rolling rollers 35 are moved in radial and outward directions and released from the to-be-rolled pipe.