TOOL FOR CUTTING LONGITUDINAL CRACK TUBE

Japanese Patent JP3827176

B2

PROBLEM TO BE SOLVED: To prettily cut a longitudinal crack tube vertically in an axial direction by providing a separation type guide for clamping a notched part toward a cut part and a tool main body having a cutting blade inserted from the notched part into the main body rotated along the outer periphery for cutting the cut part of the longitudinal crack tube.
SOLUTION: First two separation prices 5 are placed over the outside of a longitudinal crack tube 1, and the longitudinal crack tube 1 is clamped inside by fastening a wingnut. Then, a tool main body 4 is attached to the outer periphery of a guide 3, and the blade base of the tool main body 4 is set so as to coincide with the notched part of the guide 3. Then, a set screw 18 is rotated, the blade base is inserted inside and the cut part of the longitudinal crack rube 1 is cut by a cutter. Then, a rotary bar 23 is inserted into a recessed part 22 in the outer periphery of the tool main body 4 and, by rotating the tool main body 4, the cutter is moved in a circumferential direction for cutting. The longitudinal crack tube 1 is then cut by further rotating the set screw 18 and, by repeating the rotation of the tool main body 4 by several times, the cut part of the longitudinal crack tube 1 is prettily cut.

Yuji Murata
Hiroyuki Castle
Okamoto Masatoshi

JP3593197A

September 27, 2006

February 20, 1997

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Matsuzaka Iron Works Co., Ltd.
OSAKA GAS CO.,LTD.

B23D21/00; (IPC1-7): B23D21/00

JP4125518U
JP64016311A
JP8318422A
JP5506293A
JP2059208A
JP64074009A

Tatsuo Watanuki
Fumio Yamamoto

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