Title:
CUTTING DEVICE
Document Type and Number:
Japanese Patent JP2664126
Kind Code:
B2
Abstract:
PURPOSE: To provide a cutting device which can cut a pipe from the inside in the radial direction of the thin pipe.
CONSTITUTION: A basic board body 36 of a cutting device is arranged inside an inner pipe 1 to be cut. The first arm 18 is turned by the turning driving force of a driving motor 14 fixed on the basic board body 36. One end part 20a of the second arm 20 is supported in a turnable manner at the other end part 18a of the first arm 18 through a shaft 44, and a supporting roller 22 which is installed in a turnable manner at the other end part of the second arm 20 makes contact with the inner wall of the inner pipe 1. A cutter 24 which is installed in the vicinity of the other end part of the second arm 20 cuts the inner pipe 1 from the diameter inside. At this time, the turning radius which is represented by the distance from a rotary shaft 42 to the cutter 24 can be varied by varying the angle formed by the first arm 18 and the second arm 20.
Inventors:
TSUCHIMOTO TOMONORI
SHIBATA YUTAKA
SHIBATA YUTAKA
Application Number:
JP29020393A
Publication Date:
October 15, 1997
Filing Date:
November 19, 1993
Export Citation:
Assignee:
NIPPON GAISHI KK
International Classes:
B23D21/14; (IPC1-7): B23D21/14
Attorney, Agent or Firm:
Hattori Masaki