To easily and accurately cut a very hard object by arranging a cutting means and a movable table installed on a frame, moving the object to a cutting blade, then removing it from there.

A conveyor table 14 which supports an object O (for example, a ceramic tile) and moves this object O to a cutting assembly and removes it from there, is provided. The cutting assembly includes a blade protecting part 23, a motor 24 and a circular cutting disk, that is, a blade 25. Besides fixing the motor 24 to a support arm 22, the blade protecting part 23 houses the blade 25 rotatably installed on the motor 24. The motor 24 drives the blade 25 to cut the object O when the support table 14 moves to a cutting position. A clearance between the blade 25 and a side part of a groove 29 is minimized to facilitate the cutting of the object O.