| 摘要 |
PROBLEM TO BE SOLVED: To facilitate attachment/detachment work for a cutting blade to/from a spindle.SOLUTION: A blind hole 202 is formed at a center on a tip surface of a spindle 42, a magnet 210 is arranged on a bottom thereof, and a plurality of claws 204 are provided around the blind hole 202. A mounting hole 101 of a base 100 of the cutting blade 44 is fitted to the outside the claws 204, an insertion post 310 of a hold-down part 300 is inserted into the blind hole 202 to have a magnetic attachment part 312 on a tip of the insertion post 310 to be magnetically attached on the magnet 210, and the cutting blade 44 is attached to the spindle 42 in such a state that the base 100 is pressed against the tip surface of the spindle 42 by the hold-down part 300. When the spindle 42 is rotated, the claws 204 are spread outward and brought into press-contact with an inner peripheral edge of the mounting hole 101 of the base 100 in a firmly fixed state. |
