To provide a cutting device for precision cutting by suppressing eccentricity between a center of rotation of a cutting blade and a center of rotation of an insertion shaft to which the cutting blade is attached, while ensuring clearance between an inner circumferential surface of an insertion hole formed at a central part of the cutting blade and an outer circumferential surface of the insertion shaft.
An opening portion of the insertion hole 322 formed in a circular base 320 of the cutting blade 32 is provided with a chamfered portion 323c on the side abutting on a flange 301b, and a coupling portion between the insertion shaft 301a to be inserted into the insertion hole 322 and the flange 301b is provided with a tapered portion 301d formed in contact with the chamfered portion 323c to align the center of rotation of the circular base 320 and the center of rotation of the insertion shaft 301a with each other, so that the axis of rotation of the cutting blade 32 and the axis of rotation of a spindle are aligned with each other to prevent eccentricity even when the spindle having the insertion shaft 301a rotates at high speed, thereby suppressing vibration of the cutting blade and enabling precision cutting.
| JP2006212748A | 2006-08-17 | |||
| JPH11262863A | 1999-09-28 | |||
| JP2001293657A | 2001-10-23 |
Kyoko Kawamura
Ken Kubo
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