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公开(公告)号：US10661331B2
公开(公告)日：2020-05-26
申请号：US15127683
申请日：2015-03-06
Applicant: CELL IMPACT AB
Inventor： Anders Ivarson , Erika Henriksson , Alem Buljubasic
Abstract: The present invention relates to a method at the material processing by the use of high kinetic energy, comprising a piston which is driven from a start position by a hydraulic system pressure (pS) by means of a drive chamber in order, by only one stroke, to transfer high kinetic energy to a blank/tool to be processed, whereafter there is a risk that a rebound of the piston will occur, and the method comprises that a step is taken in connection with said stroke performed, which step prevents said piston from making a rebound with an essential content of kinetic energy in order to avoid negative effects as a result of a rebound, whereafter the piston is returned to said start position by means of a second chamber, wherein said step comprises that a valve means closes the driving connection between the system pressure (pS) and the piston, wherein said step comprises that said valve means is controlled by a pilot valve controlling the entire striking progress, and that said second chamber is pressurized with the system pressure (pS) during the entire striking progress.
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公开(公告)号：US12220741B2
公开(公告)日：2025-02-11
申请号：US17272248
申请日：2019-09-26
Applicant: Cell Impact AB
Inventor： Erika Henriksson
Abstract: A method for material forming, by means of a movable impact head and tool combination and a drive unit, the method including 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. A return movement of the movable impact head and tool combination, away from the work material, after the strike of the work material by the impact head and tool combination, is dampened.
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公开(公告)号：US10882098B2
公开(公告)日：2021-01-05
申请号：US16793958
申请日：2020-02-18
Applicant: CELL IMPACT AB
Inventor： Anders Ivarson , Erika Henriksson , Alem Buljubasic
Abstract: A method of processing a material by use of high kinetic energy comprises a piston driven from a start position by a hydraulic system pressure by a drive chamber, by only one stroke, to transfer high kinetic energy to a blank/tool to be processed, whereafter there is a risk that a rebound of the piston will occur, so a step is taken in connection with said stroke performed, to prevent said piston from making a rebound with an essential content of kinetic energy to avoid negative effects as a result, whereafter the piston is returned to said start position by means of a second chamber, wherein a valve means closes the driving connection between the system pressure and the piston, the valve means is controlled by a pilot valve controlling the entire striking progress, and the second chamber is pressurized with the system pressure during the entire striking progress.
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