Tool and method for its manufacture

Abstract

A method is disclosed for manufacturing a tool or a part thereof for carrying out operations such as pressing, cutting, hemming and the like, and in which the tool is given different material properties in different parts of the tool, wherein the tool is cast to one united piece, the casting material with at least two different material properties being supplied, one to each of the different parts of the tool, and at least one of the casting materials being supplied in liquid form.

1 - 4 . (canceled)  
   
   
       5 . A method of manufacturing a tool or a part thereof for carrying out operations such as pressing, cutting, hemming and the like, and in which the tool is given different material properties in different parts of the tool, characterised in that the tool is cast to one united piece, the casting material with at least two different material properties being supplied, one to each of the different parts of the tool, and at least one of the casting materials being supplied in liquid form.  
   
   
       6 . The method as claimed in  claim 5 , characterised in that, in the casting operation of the tool, casting materials of different compositions are kept separate and discrete from one another.  
   
   
       7 . The method as claimed in  claim 5 , characterised in that, in the casting of the tool, casting materials of different compositions are intermingled in a zone between parts of the tool, where the material composition differs.  
   
   
       8 . The method as claimed in  claim 5 , characterised in that at least one of the tool parts is at treated.  
   
   
       9 . The method as claimed in  claim 5 , characterised in that at least one of the tool parts is provided with a surface coating.