公开(公告)号：US20200180010A1

公开(公告)日：2020-06-11

申请号：US16793958

申请日：2020-02-18

Applicant: CELL IMPACT AB

Inventor： Anders IVARSON ,  Erika HENRIKSSON ,  Alem BULJUBASIC

IPC: B21J9/20 ,  B30B15/16 ,  B21J13/02 ,  B21J13/06 ,  B21J9/12

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.

公开(公告)号：US20170136522A1

公开(公告)日：2017-05-18

申请号：US15127683

申请日：2015-03-06

Applicant: CELL IMPACT AB

Inventor： Anders IVARSON ,  Erika HENRIKSSON ,  Alem BULJUBASIC

IPC: B21J9/20 ,  B21J13/06 ,  B21J9/12

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.