Clamping device

Abstract

The invention refers to a device for clamping goods, in particular pallets carrying work pieces, in machine tools during machining. The device comprises several clamping bolts which interact with corresponding recesses of the good. During clamping the good simultaneously the position, respectively the orientation, of the good is determined by introducing the bolt in the recess.

1 . Device for clamping goods, in particular pallets carrying work pieces in machine tools during machining, characterised in that the device or the good ( 2 ) has several clamping bolts ( 55 ) which interact with corresponding recesses ( 21 ) of the good ( 2 ) or of the device in such a way that during clamping the good by means of introducing the bolt in the recess also the positioning, respectively orientation, of the good is carried out.  
   
   
       2 . Device according to  claim 1 , characterised in that the clamping device ( 5 ) comprises several holding devices ( 53 ) each of them holding a clamping bolt ( 55 ), and the holding device ( 53 ) is formed like a C in order to embrace the good ( 2 ) laterally.  
   
   
       3 . Device according to  claim 1 , characterised in that the clamping device ( 5 ) comprises several holding devices ( 53 ) each of them holding a clamping bolt ( 55 ), and the holding device ( 53 ) is formed like a C in order to embrace the good ( 2 ) laterally, and on the holding device ( 53 ) a supporting surface ( 62 ) is provided for the good ( 2 ) which takes over the clamping forces of the clamping bolt ( 55 ).  
   
   
       4 . Device according to  claim 1 , characterised in that the clamping device ( 5 ) comprises several holding devices ( 53 ) each of them holding a clamping bolt ( 55 ), an the holding device ( 53 ) is formed like a C in order to embrace the good ( 2 ) laterally, and on the holding device ( 53 ) a supporting surface ( 62 ) is provided for the good ( 2 ) which takes over the clamping forces of the clamping bolt ( 55 ), and the position of the supporting surface ( 62 ) can be adjusted by means of adjustment washers ( 63 ) on the holding device ( 53 ).  
   
   
       5 . Device according to  claim 1 , characterised in that a drive ( 7 ) is provided for the clamping bolt.  
   
   
       6 . Device according to  claim 1 , characterised in that a separating stopper ( 60 ) is provided in order to reach a secure releasing of the clamping bolt ( 55 ) from the good ( 2 ).  
   
   
       7 . Device according to  claim 1 , characterised in that the clamping bolt ( 55 ) is shaped on its end which engages into the good ( 2 ) like a cone, a truncated cone or a cylinder.  
   
   
       8 . Device according to  claim 1 , characterised in that the clamping bolt ( 55 ) is supported with as little clearance as possible or completely without any clearance.  
   
   
       9 . Device according to  claim 1 , characterised in that the recess ( 21 ) in the good ( 2 ) is formed like a cone, a truncated cone or a cylinder.  
   
   
       10 . Device according to  claim 1 , characterised in that the pallet ( 20 ) has at least at each of its corners a recess ( 21 ).  
   
   
       11 . Device according to  claim 1 , characterised in that the pallet ( 20 ) has at least at its corners a recess ( 21 ), and the recesses ( 21 ) of one pallet ( 20 ) are identical or different.  
   
   
       12 . Device according to  claim 1 , characterised in that at the device ( 5 ) a first holding device ( 53 ) is provided for positioning the pallet ( 20 ) in the clamping plane.  
   
   
       13 . Device according to  claim 1 , characterized in that at the device ( 5 ) a first holding device ( 53 ) is provided for positioning the pallet ( 20 ) in the clamping plane, and at the device ( 5 ) a second holding device is provided, preferably diagonally to the first holding device on the pallet ( 20 ), and determines the pallet ( 20 ) in the clamping plane.  
   
   
       14 . Device according to  claim 1 , characterized in that at the device ( 5 ) a first holding device ( 53 ) is provided for positioning the pallet ( 20 ) in the clamping plane, and at the device ( 5 ) a second holding device is provided, preferably diagonally to the first holding device on the pallet ( 20 ), and determines the pallet ( 20 ) in the clamping plane, and the clamping bolt ( 55 ) of the first and second holding device virtually simultaneously engage in the respective recesses ( 21 ) on the pallet ( 20 ).  
   
   
       15 . Device according to  claim 1 , characterised in that at the device ( 5 ) a first holding device ( 53 ) is provided for positioning the pallet ( 20 ) in the clamping plane, and the clamping bolt ( 55 ) of the first holding device is formed as a full cone.  
   
   
       16 . Device according to  claim 1 , characterized in that at the device ( 5 ) a first holding device ( 53 ) is provided for positioning the pallet ( 20 ) in the clamping plane, and at the device ( 5 ) a second holding device is provided, preferably diagonally to the first holding device on the pallet ( 20 ), and determines the pallet ( 20 ) in the clamping plane, and the clamping bolt ( 55 ′) of the second holding device has lateral flattenings which are located on the connecting line of the two recesses ( 21 ) interacting with the first and the second holding device.  
   
   
       17 . Device according to  claim 1 , characterised in that the device ( 5 ) has a clamping crosshead ( 50 ), and the clamping crosshead ( 50 ) acts on several clamping bolts ( 55 ).  
   
   
       18 . Device according  claim 1 , characterised in that the device ( 5 ) has a clamping crosshead ( 50 ), and the clamping crosshead ( 50 ) acts on several clamping bolts ( 55 ), and the clamping crosshead ( 50 ) is connected flexibly with the clamping drive ( 7 ), for example a clamping bar ( 57 ).  
   
   
       19 . Device according to  claim 1 , characterised in that the clamping bolt has a boring for compressed air.  
   
   
       20 . Device according to  claim 1 , characterised in that the pallet ( 20 ) has at least on each of its corners a recess ( 21 ), and in the region of one recess ( 21 ) of the pallet grooves ( 66 ) are provided.  
   
   
       21 . Machine tool, in particular cutting machine tool for machining goods like work pieces clamped on pallets, the good, respectively the pallet, being clamped by a device according to  claim 1.