To provide technology for well cutting a cutting material independently of the type of the cutting material while preventing the deformation or roughness of the cut surface.

This cutting device comprises a first cylinder 10 for operating a movable pin 10a along a fist direction to abut on an outer periphery 12a of a movable blade 12 having a die hole 32 which shears a cutting material inserted thereinto, a second cylinder 28 for operating a movable pin 28a along a second direction different from the first direction to abut on the outer periphery 12a of the movable blade 12, and a third cylinder 30 for operating a movable pin 30a along a third direction different from each of the first and second directions to abut on the outer periphery 12a of the movable blade 12. The first cylinder 10, the second cylinder 28 and the third cylinder 30 are controlled with a phase difference corresponding to a mutual position relationship.