Plate member shearing apparatus, method for shearing plate member, and sheared piece of plate member

摘要

A shearing apparatus (1) for shearing a plate member (2) is provided with a pair of shearing rollers (20, 20) opposed with each other. These shearing rollers (20, 20) are rotated in opposite directions in a state that the plate member (2) in pinched by and between peripheral surfaces of these shearing rollers (20,20). These shearing rollers (20, 20) are provided with at least one pair of shearing portions (21, 21) to be engaged with each other to shear the plate member (2). These shearing portions (21, 21) are formed on the peripheral surfaces and extend in an axial direction of the roller (20, 20).