Document Type and Number:
Japanese Patent JP3902750
PROBLEM TO BE SOLVED: To provide a cutting device which can prevent destruction by cracking of a movable blade in the cutting device fitted with the flat movable blade having a cutting edge larger than the diameter of a cutter rod.
SOLUTION: A portion 7b protruding outward from the large diameter section 40b of the cutter rod 4 of the movable blade 7 has a curved inner periphery 7c with the same radius as the outer periphery of the large diameter section 40b. The movable blade 7 is made to touch the plane section 40c of the cutter rod 4 and is mounted in a state of the curved inner peripheral face 7c being fitted into the outer periphery of the large diameter section 40b so that external force working on the protruding portion 7b is supported on the outer periphery of the cutter rod.
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January 12, 2007
August 08, 2002
B23D15/04; B23D15/14; B23D29/00; B23D35/00; B23D15/00; B23D29/00; B23D35/00; (IPC1-7): B23D15/04; B23D35/00