Patent ID: 8863565
Filing Date: 2014-10-21
Classification: B21D,Y10T

Abstract:
1. A three-dimensionally bending machine comprising; a feeding unit for successively or continuously feeding a workpiece from an upstream side of the workpiece; a supporting unit for supporting the workpiece; a heating and cooling unit that is provided around the outer circumference of a portion of workpiece and is provided at a downstream side of said supporting unit, both for use in heating a portion of workpiece in a temperature range which allows the heated portion to be locally plastically deformed and which allows quenching to be performed, and for use in subsequently rapidly cooling down the heated portion after a bending moment is applied thereto; and a three-dimensionally movable unit that is provided at the downstream side of said heating and cooling unit, the three-dimensionally movable unit including a set of roller-dies that are movable in a three dimensional direction, the set of roller-dies comprising two rolls, three rolls, or four rolls as roller-dies, the roller dies configured to clamp the workpiece in a clamping position, and to control the clamping position and the moving speed of the workpiece so that the roller-dies can apply the bending moment in association with a feed amount of the workpiece by said feeding unit while controlling a heating amount and a cooling amount of the workpiece by said heating and cooling unit.