| 摘要 |
Provided is a mount flange capable of suppressing deformation caused by rotation of a spindle. The mount flange (40) for mounting a cutting blade (50), which has an engaging hole (52a) at a central portion and a cutting edge (54) at an outer circumferential portion, on a spindle (38) comprises: a cylindrical boss portion (42) having a front portion adapted to be inserted into the engaging hole of the cutting blade and a rear portion whose inner circumferential surface (42a) is adapted to be engaged with the spindle; and a flange portion (44) extending radially outwards from the rear portion of the boss portion and having a mounting surface (44b) on a front surface, touched by the cutting blade. An annular space (44c) is formed to surround the spindle and open to the inner circumferential surface of the boss portion, thereby suppressing rearward warpage of the outer circumference of the flange portion, caused by the rotation of the spindle. |
