Method and device for producing a formed hollow profile

Abstract

A method for producing a metallic formed hollow profile which is curved in at least one axis, in which a hollow metallic profile element is formed by means of two tool elements of a tool group which hold a cross section part of the hollow metallic profile element, on a length of the hollow metallic profile element, wherein at least two tool groups each having two tool elements which are spaced from one another are provided, wherein each of the tool groups is fixed to the hollow metallic profile element at least in regions in a forced based manner, wherein the region of the hollow metallic profile element to be formed is arranged between the tool groups, and wherein through relative movement of the tool groups to one another, the hollow metallic profile element in the freely arranged region located between the tool groups is formed at least partially.

1 . A method for producing a metallic formed hollow profile ( 1 ) which is curved in at least one axis (X, Y, Z), in which a hollow metallic profile element ( 25 ) is formed by means of at least two tool elements ( 16 ,  17 ,  31 ,  32 ) of a tool group ( 11  to  13 ) which hold a cross section part of the hollow metallic profile element ( 25 ), on a given length of said hollow metallic profile element ( 25 )
 characterized in that 
 at least two tool groups ( 11  to  13 ) each comprising two tool elements ( 16 ,  17 ,  31 ,  32 ) which are spaced from one another are provided, in that each of the tool groups ( 11  to  13 ) is fixed to the hollow metallic profile element ( 25 ) at least in regions in a forced based manner, 
 wherein a region ( 42 ,  43 ) of the hollow metallic profile element ( 25 ) to be formed is freely arranged between the tool groups ( 11  to  13 ), and in that through relative movement of the tool groups ( 11  to  13 ) to one another, 
 the hollow metallic profile element ( 25 ) in the freely arranged region ( 42 ,  43 ) located between the tool groups ( 11  to  13 ) is formed at least partially. 
 
     
     
         2 . The method according to  claim 1 ,
 characterized in that   the spacing between the tool groups ( 11  to  13 ) during the forming of the hollow metallic profile element ( 25 ) is changed in such a manner that the hollow metallic profile element ( 25 ) between the tool groups ( 11  to  13 ) is stretched or compressed or the position of a neutral fibre changed.   
     
     
         3 . The method according to  claim 1 ,
 characterized in that   during a forming of the hollow metallic profile element ( 25 ) in multiple space axes (X, Y, Z) the tool groups ( 11  to  13 ) are moved one after the other.   
     
     
         4 . The method according to  claim 1 ,
 characterized in that   for forming the hollow metallic profile element ( 25 ) in multiple space axes (X, Y, Z) the tool groups ( 11  to  13 ) are moved simultaneously at least at times.   
     
     
         5 . The method according to  claim 1 ,
 characterized in that   the tool groups ( 11  to  13 ) for forming are moved along at least one space axis (X, Y, Z) linearly and/or in a rotatively manner about at least one space axis (X, Y, Z).   
     
     
         6 . The method according to  claim 1 ,
 characterized in that   the tool groups ( 11  to  13 ) for forming are moved along at least two space axis (X, Y, Z) linearly and/or in a rotatively manner about at least two space axis (X, Y, Z).   
     
     
         7 . The method according to  claim 1 ,
 characterized in that   prior to the moving of the tool groups ( 11  to  13 ) towards one another the hollow metallic profile element ( 25 ) is additionally formed within a tool group ( 11 ), in particular for forming a curvature.   
     
     
         8 . The method according to  claim 1 , characterized in that
 said hollow metallic profile element ( 25 ) is an extrusion profile, preferably made from an aluminium alloy.   
     
     
         9 . A device ( 10 ) for carrying out a method according to  claim 1 , wherein the device ( 10 ) has at least two tool groups ( 11  to  13 ) which are moveably arranged relative to one another, wherein the tool groups ( 11  to  13 ) each comprises two tool elements ( 16 ,  17 ,  31 ,  32 ) which are moveable against one another and against a cross section part of a hollow metallic profile element ( 25 ), said tools elements ( 16 ,  17 ,  31 ,  32 ) of a tool groups ( 11  to  13 ) are capable of holding a cross section part of the hollow metallic profile element ( 25 ), on a given length in a forced based manner, and wherein between the tool groups ( 11  to  13 ) a spacing is provided, in which the hollow metallic profile element ( 25 ) with the section ( 42 ,  43 ) to be formed can be formed without direct contact with the tool groups ( 11  to  13 ). 
     
     
         10 . The device according to  claim 9 ,
 characterized in that   at least two tool groups ( 11  to  13 ) are linearly movable by means of an adjusting drive ( 40 ) along at least one space axis (X, Y, Z) and/or pivotable about at least one space axis (X, Y, Z).   
     
     
         11 . The device according to  claim 8 ,
 characterized in that   at least two tool groups ( 11  to  13 ) are linearly pivotable by means of an adjusting drive ( 40 ) along at least two space axis (X, Y, Z) and/or pivotable about at least two space axis (X, Y, Z).   
     
     
         12 . The device according to  claim 8 ,
 characterized in that   at least one tool group ( 11 ) is designed in order to form the profile element ( 25 ) within the tool group ( 11 ).