| 摘要 |
In a shearing device ( 10 ), a plate-like work piece ( 50 ) is seated on a die ( 20 ) positioned on a lower side thereof is clamped by a pad ( 30 ), so that a predetermined portion of the work piece ( 50 ) is processed into a predetermined shape by a punch positioned on an upper side thereof. The punch ( 40 ) integrally has a heel portion ( 41 ). The heel portion is so as to broadly contact an outer peripheral face ( 51 ) of the predetermined portion to be processed of the work piece ( 50 ), thereby restraining the outer peripheral face ( 51 ) from moving in an outward direction perpendicular to a thickness direction,
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