Patent ID: 9475111
Filing Date: 2016-10-25
CPC Classification: B21D

Claim Text:
1. A method of manufacturing a press product from a workpiece, the press product including a top surface part, a vertical wall part connected to an end of the top surface part, and a corner part interposed between the top surface part and the vertical wall part, the press product being formed by applying a pressing force on the workpiece by a forming die, the method comprising: flowing a material of the corner part toward the top surface part; and applying a pressing force on the corner part with the forming die in a direction from an inner wall surface toward an outer wall surface of the corner part while constraining the vertical wall part and both surfaces of the corner part, with a portion of the top surface part unconstrained, such that material flows from the corner part toward the unconstrained portion of the top surface part during application of the pressing force.