Method and tools for the production of a braking band for a brake disk

Abstract

The invention relates to a method and tools for producing a braking band of a disk-brake disk by casting, in which the disk comprises at least two plates connected to one another by connecting elements forming an internal air-duct for the cooling of the braking band. With the method and the tools, a disk is produced in which at least one of the plates has, in its surface defining the air-ducts, at least one groove having a cross-section which becomes wider towards the air-duct.

1 - 24 . (canceled)  
   
   
       25 . A method of producing a braking band of a disk-brake disk by casting, the band comprising at least two plates connected to one another by connecting elements, in which the space between the plates forms an internal air-duct defined by surfaces, wherein it provides for the use of a core suitable for forming, in at least one of the surfaces defining the air-ducts, at least one groove which extends substantially around a circle concentric with the axis of symmetry of the disk and having a cross-section which becomes wider towards the air-duct for a predominant portion of its depth.  
   
   
       26 . A method of producing a braking band by casting, comprising the following steps: 
 providing a core-box according to claim  24 ,    producing a core by means of the core-box,    producing a braking band by means of moulds and the core, and    machining and finishing the outer surfaces of the breaking band as well as the other exposed surfaces of the braking band.    
   
   
       27 . A method of producing a disk by casting, comprising the following steps: 
 providing a core-box according to claim  24 ,    producing a core by means of the core-box,    producing a brake disk having a braking band by means of moulds and the core,    machining and finishing the outer surfaces of the braking band as well as other exposed surfaces of the brake disk.    
   
   
       28 . A method of producing a braking band by casting, comprising the following steps: 
 providing a core-box according to claim  24 ,    producing a core by means of the core-box,    producing a braking band by means of moulds and the core,    opening grooves outwardly during the machining and finishing of the outer surfaces of the braking band, and    machining and finishing the outer exposed surfaces.    
   
   
       29 . A method of producing a disk by casting, comprising the following steps: 
 providing a core-box according to claim  24 ,    producing a core by means of the core-box,    producing a brake disk having a braking band by means of moulds and the core,    opening grooves outwardly during the machining and finishing of the outer surfaces of the braking band, and    machining and finishing the other exposed surfaces of the brake disk.