Title:
MANUFACTURE OF HIGH ACCURACY CUT RING
Document Type and Number:
Japanese Patent JP3741909
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To improve yield by increasing the acquired number of cut pieces without preliminary cutting by a preliminary cutting tool in cutting a steel pipe into multiple pieces with a cutting-off device.
SOLUTION: A long steel pipe 1 is advanced between an open collet chuck 2 by a pusher while being circumferentially rotated in a rotating direction 8, and positioned abutting on a hydraulic stopper chuck 3 disposed opposedly to a steel pipe tip 7. While corotating the hydraulic stopper chuck 3 in the direction of an arrow mark 12 with the rotation of the steel pipe 1, a claw 4 is tightened to close the hydraulic stopper chuck 3, thereby centering the steel pipe tip 7. The collet chuck 2 is closed to chuck and hold the steel pipe 1, and then the hydraulic stopper chuck 3 is opened to release the centered steel pipe tip 7. After the hydraulic stopper chuck 3 is spaced from the steel pipe tip 7, the steel pipe 1 is cut off in multiple pieces with a cutting tool.
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Inventors:
Kikumoto Kikuo
Application Number:
JP23379799A
Publication Date:
February 01, 2006
Filing Date:
August 20, 1999
Export Citation:
Assignee:
Sanyo Special Steel Co., Ltd.
International Classes:
B23B5/14; B23D21/00; B23B1/00; (IPC1-7): B23B5/14; B23B1/00; B23D21/00
Domestic Patent References:
| JP5285706A | ||||
| JP5072303U |
Attorney, Agent or Firm:
Kenji Yokoi