Blade replacing device

A blade replacing device used in a cutting apparatus that cuts a workpiece by an annular cutting blade mounted to a tip part of a spindle via a blade mount, the blade mount having a cylindrical boss section which projects in an axial direction of the spindle in a state of being fixed to the tip part of the spindle, and the blade mount further having an annular flange section which is located on a base end part side of the boss section, projects radially outwardly relative to the boss section, and is capable of making contact with a first side surface of the cutting blade in a state in which the cutting blade is positioned radially outwardly of the boss section, the blade replacing device comprising:

• a holding section that detachably holds the cutting blade;
• a moving section that relatively advances and retracts the holding section in a state of holding the cutting blade relative to the spindle in the axial direction of the spindle, and positions the holding section at least at a mounting position at which a second side surface of the cutting blade is located at a distance that is equal to or less than a predetermined distance from the flange section of the blade mount, and further positions the holding section at a released position at which the cutting blade is spaced from the blade mount, wherein the second side surface of the cutting blade is located on an opposite side of the cutting blade than the first side surface of the cutting blade;
• a thickness information acquisition section for acquiring information concerning a thickness of the cutting blade;
• and
• a control unit, including a processor and a storage device, that receives the thickness of the cutting blade from the thickness information acquisition section,
• wherein the control unit is configured to adjust the mounting position of the holding section, according to the thickness of the cutting blade that was acquired by the control unit from the thickness information acquisition section.