Bending machine

Abstract

The invention relates to a bending press ( 3 ), in particular a press brake, comprising a machine frame ( 7 ) and pressing bars ( 13, 16 ), and tool holders ( 19, 20 ) and bending tools ( 4 ) arranged or formed on the pressing bars ( 13, 16 ) in the form of a bending punch ( 5 ) or a bending die ( 6 ), wherein a receiving portion ( 35 ) of the bending tools ( 4 ) is accommodated in a receiving groove ( 34 ) of the tool holder ( 19, 20 ). The tool holder ( 19, 20 ) and a driver device ( 41 ) assigned to the bending tool ( 4 ) are designed as a linear motor, as a result of which the bending tool ( 4 ) can be positioned in a direction ( 32 ) that is parallel to a bending edge ( 31 ).

1 : A bending press ( 3 ), in particular press brake, comprising a machine frame ( 7 ) and pressing bars ( 13 ,  16 ) and tool holders ( 19 ,  20 ) arranged or formed on the pressing bars ( 13 ,  16 ) and bending tools ( 4 ) in the form of a bending punch ( 5 ) or a bending die ( 6 ), wherein a receiving portion ( 35 ) of the bending tools ( 4 ) is mounted in a receiving groove ( 34 ) of the tool holder ( 19 ,  20 ), wherein the tool holder ( 19 ,  20 ) and a driver device ( 41 ) assigned to the bending tool ( 4 ) is designed as a linear motor ( 36 ), whereby the bending tool ( 4 ) can be positioned in a direction ( 32 ) parallel to a bending edge ( 31 ). 
     
     
         2 : The bending press as claimed in  claim 1 , wherein the tool holder ( 19 ,  20 ) is designed as a long stator. 
     
     
         3 : The bending press as claimed in  claim 1 , wherein the driver device ( 41 ) is designed as a shuttle ( 50 ), which is guided in the tool holder ( 19 ,  20 ) and to which the receiving portion ( 35 ) of the bending tool ( 4 ) can be coupled. 
     
     
         4 : The bending press as claimed in  claim 3 , wherein the shuttle ( 50 ) can be coupled by means of retractable pins ( 52 ) to the receiving portion ( 35 ) of the bending tool ( 4 ). 
     
     
         5 : The bending press as claimed in  claim 1 , wherein the driver device ( 41 ) is designed in one piece with the receiving portion ( 35 ) of the bending tool ( 4 ). 
     
     
         6 : The bending press as claimed in  claim 1 , wherein in the tool holder ( 19 ,  20 ) a cleaning shuttle ( 53 ) is arranged which is designed for cleaning the receiving groove ( 34 ) of the tool holder ( 19 ,  20 ), wherein the cleaning shuttle ( 53 ) also acts as a linear motor ( 36 ) with the tool holder ( 19 ,  20 ). 
     
     
         7 : The bending press as claimed in  claim 1 , wherein permanent magnets ( 39 ) are arranged in the driver device ( 41 ). 
     
     
         8 : The bending press as claimed in  claim 1 , wherein in the area of the receiving groove ( 34 ) of the tool holder ( 19 ,  20 ) a three-phase winding system ( 37 ) is arranged, wherein the winding system ( 37 ) is controlled by a control device ( 24 ) such that individual bending tools ( 4 ) mounted in the tool holder ( 19 ,  20 ) can be displaced independently of one another. 
     
     
         9 : The bending press as claimed in  claim 8 , wherein the winding system ( 37 ) is arranged on a groove base ( 38 ) of the receiving groove ( 34 ) and the permanent magnets ( 39 ) are arranged on one end side ( 40 ) of the receiving portion ( 35 ) of the bending tool ( 4 ). 
     
     
         10 : The bending press as claimed in  claim 8 , wherein the winding system ( 37 ) is formed on at least one side face ( 45 ) of the receiving groove ( 34 ) and the permanent magnets ( 39 ) are arranged on at least one side face ( 46 ) of the receiving portion ( 35 ) of the bending tool ( 4 ). 
     
     
         11 : The bending press as claimed in  claim 10 , wherein the winding system ( 37 ) is formed on both side faces ( 45 ) of the receiving groove ( 34 ) and the permanent magnets ( 39 ) are arranged on both side faces ( 46 ) of the receiving portion ( 35 ) of the bending tool ( 4 ), wherein the two winding systems ( 37 ) are arranged to be symmetrical to a central plane ( 47 ) of the tool holder ( 19 ,  20 ). 
     
     
         12 : The bending press as claimed in  claim 8 , wherein the winding system ( 37 ) extends over the whole length ( 33 ) of the tool holder ( 19 ,  20 ). 
     
     
         13 : The bending press as claimed in  claim 1 , wherein a sensor ( 49 ) is formed which is provided for detecting the position of the bending tool ( 4 ). 
     
     
         14 : The bending press as claimed in  claim 13 , wherein the sensor ( 49 ) is arranged on the tool holder ( 19 ,  20 ). 
     
     
         15 : The bending press as claimed in  claim 7 , wherein in the bending tool ( 4 ) a clamping jaw ( 54 ) is formed which clamping jaw ( 54 ) can be released by the magnetic field of the winding system ( 37 ). 
     
     
         16 : The bending press as claimed in  claim 1 , wherein the tool holder ( 19 ,  20 ) comprises an attachment strip ( 58 ) which is arranged outside the receiving groove ( 34 ) and in which the winding system ( 37 ) is integrated.