US 12,220,741 B2
Methods of, and apparatuses for, material forming
Erika Henriksson, Skoghall (SE)
Assigned to CELL IMPACT AB, Karlskoga (SE)
Appl. No. 17/272,248
Filed by Cell Impact AB, Karlskoga (SE)
PCT Filed Sep. 26, 2019, PCT No. PCT/EP2019/076040
§ 371(c)(1), (2) Date Feb. 26, 2021,
PCT Pub. No. WO2020/064934, PCT Pub. Date Apr. 2, 2020.
Claims priority of application No. 1851166-7 (SE), filed on Sep. 28, 2018.
Prior Publication US 2021/0268567 A1, Sep. 2, 2021
Int. Cl. B21J 9/02 (2006.01); B21D 28/00 (2006.01); B21J 5/00 (2006.01); B21J 7/28 (2006.01); B30B 15/06 (2006.01)
CPC B21J 9/02 (2013.01) [B21D 28/002 (2013.01); B21J 5/00 (2013.01); B21J 7/28 (2013.01); B30B 15/065 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A method for material forming, by means of a movable impact head and tool combination and a drive unit, the method comprising:
moving the drive unit to provide kinetic energy to the impact head and tool combination, for the impact head and tool combination to strike a work material, so as to form the work material, allowing the movable impact head and tool combination to undergo a return movement, away from the work material, after the strike of the work material by the impact head and tool combination, and elastically dampening the return movement of the movable impact head and tool combination;
wherein the impact head and tool combination comprises a tool to strike the work material, and an impact head to receive a strike from the moving drive unit,
wherein the impact head and the tool comprises a respective collar at an interface between the impact head and the tool, the collar of the tool surrounding, as seen in a direction of the strike, a working surface of the tool which is arranged to come into contact with the work material at the strike,
wherein the method comprises arranging a first dampening element between a surface of the impact head collar, facing away from the work material, and a shoulder of a frame, wherein the method comprises arranging a second dampening element between a surface of the tool collar, facing away from the impact head, and another shoulder of the frame.