| 摘要 |
PURPOSE:To efficiently cut a thick material with a rotary type blade and a fixed blade joining with the former blade by adopting a crank type rotor as the one to be equipped with a rotary blade. CONSTITUTION:A crank type rotor 11 adopted as the one to be equipped with a rotary blade 12 is rotatably supported on a frame 18. A part corresponding to a crank pin connecting cranks 15 and 15 is a rotary beam 16, to which a rotary blade 12 is detachably fixed. A thick material board-like body 9 which makes a straight advance along a horizontal plane area of a fixed blade 13 is cut along a right-angled section by means of the rotary blade 12 and the fixed blade 13. The thick material board-like body 9 can make a straight advance smoothly during its feed through a space up to which the rotary blade is raised by means of a crank. |
