Patent ID: 8234897

Claim:
A press-forming device, comprising: a punch; a die which relatively moves with respect to said punch; a strain amount measuring unit which is provided inside a member to be controlled, and measures a strain amount of said member to be controlled which occurs in accordance with press-forming, When at least any one of said punch and said die is said member to be controlled; a strain amount controller which is provided in said member to be controlled and controls a strain amount of said member to be controlled which occurs in accordance with press-forming, wherein the strain amount measuring unit and the strain amount controller are disposed next to each other inside said member to be controlled, and the distance between the strain amount measuring unit and the strain amount controller is 1 to 1000 mm, wherein the strain amount controller generates a strain in the direction to cancel off a compression strain amount and a stretching strain amount measured by the strain amount measuring unit.