Patent ID: 7665341

Claim:
A negative-angle press-working die comprising: an elevatable pad fixed to an upper die; a slide cam supported on the upper die or a lower die, having a bending blade formed at one end portion, having cam surfaces on both upper and lower sides, and supported so as to laterally slide along both of the cam surfaces; a rotary cam having, at one end thereof, a bending part that forms a negative-angle portion on a workpiece, having a cam surface abutting on one of the cam surfaces of the slide cam, and being rotatable about a rotational center; a slide body disposed under the pad, having a hold part provided at an upper portion on a bending part side of the rotary cam and constituting a part of a male die for workpiece forming, elevatably held, and being rotatable together with the rotary cam; a drive unit that rotates the rotary cam at a workpiece working position; and a slide drive unit that slides the slide body in an up and down direction; wherein the slide drive unit includes a cam slide having, on an upper side, a cam surface on which the slide body is slidable, and having a lower end supported at an end portion of the rotary cam so as to be movable laterally, an urging section that urges the cam slide in a direction away from the rotational center of the rotary cam, and an upper die driver having, at a lower end portion of a side face thereof, a cam surface which abuts on a cam surface formed at an upper end portion of a side face of the cam slide to forcibly move the cam slide laterally, and fixed to the upper die.