Title:
【考案の名称】ねじ棒切断装置
Document Type and Number:
Japanese Patent JP2603806
Kind Code:
Y2
Abstract:
A portable, power-driven machine for cutting a threaded rod to any required length by the shearing action of a movable cutting bit thrust past a fixed cutting bit. Each cutting bit has a series of semicircular internal threads for mating engagement with the threaded rod, and a cutting face disposed perpendicular to the axis of the internal threads. A depression with a depth less than the thread pitch is formed in the cutting face of the fixed cutting bit. When the threaded rod is sheared, to one rod section is partly received in the depression at the end of the cutting stroke of the movable cutting bit, in order to prevent the jamming engagement of the movable cutting bit with the rod section through their mating threads. A similar depression is formed in the cutting face of the movable cutting bit in an alternate embodiment of the invention.
Inventors:
Kimura Kiyoshi
Application Number:
JP790893U
Publication Date:
March 27, 2000
Filing Date:
March 01, 1993
Export Citation:
Assignee:
Ogura Co., Ltd.
International Classes:
B23D15/14; B23D29/00; B23D23/00; B23D35/00; (IPC1-7): B23D29/00; B23D23/00
Domestic Patent References:
| JP482614A | ||||
| JP489618U | ||||
| JP4223871B1 |
Attorney, Agent or Firm:
Kazuo Sato (3 others)