Guide gib for gib-guided cutting tools

Abstract

A guide gib for gib-guided cutting tools that serves for precision machining of rotationally symmetrical bores is ground on its working surface so as to match the nominal diameter of the tool surface, by grinding with diamond abrasive, the guide gib being a PCD guide with a hardness corresponding to the cobalt proportion of the PCD material used for production. The cobalt proportion is greater than 10%.

What is claimed is:  
     
         1 . Guide gib for gib-guided cutting tools that serves for precision machining of rotationally symmetrical bores, which guide gib is ground on its working surface so as to match a nominal diameter of a cutting tool, the guide gib being a PCD guide gib with a hardness corresponding to a cobalt proportion of the PCD material :used for a production wherein a cobalt proportion is greater than 10%.  
     
     
         2 . The guide gib according to  claim 1 , in which the cobalt proportion is greater than 11%.  
     
     
         3 . The guide gib according to  claim 1 , in which the cobalt proportion is greater than 12%.  
     
     
         4 . The guide gib according to  claim 1 , in which the cobalt proportion is greater than 13%.  
     
     
         5 . The guide gib according to  claim 1 , in which the cobalt proportion is greater than: 14%.  
     
     
         6 . The guide gib according to  claim 1 , in which the cobalt proportion is greater than 15%.  
     
     
         7 . The guide gib according to  claim 1 , in which the cobalt proportion is greater than 16%.  
     
     
         8 . The guide gib according to  claim 1 , in which the cobalt proportion is greater than 17%.  
     
     
         9 . The guide gib according to  claim 1 , in which the cobalt proportion is greater than: 18%.  
     
     
         10 . The guide gib according to  claim 1 , in which the cobalt proportion is greater than 19%.  
     
     
         11 . The guide gib according to  claim 1 , in which the cobalt proportion is greater than 20%.  
     
     
         12 . The guide gib according to  claim 1 , in which the cobalt proportion is greater than 21 %.  
     
     
         13 . The guide gib according to  claim 1 , in which the cobalt proportion is less than 35%.  
     
     
         14 . Method of producing guide gibs from PCD guide-gib blanks, comprising: 
 selecting a percentage by volume of cobalt of the guide gib blank that is greater than 10%, or greater than 11%, or greater than 12%, or greater than 13%, or greater than 14%, or greater than 15%, or greater than 16%, or greater than 17%, or greater than 18%, or greater than 19%, or greater than 20%, or greater than 21%, but is less than 35%, and    grinding a functional surface of the guide gib.    
     
     
         15 . Method for electrical-discharge machining of guide-gib blanks from round PCD blanks, comprising selecting a material of a round blank PCD having a cobalt proportion of greater than 10%.  
     
     
         16 . Method for an electrical-discharge machining of guide-gib blanks from round PCD blanks for cutting tools, comprising: 
 providing a PCD guide gib with a hardness corresponding to a cobalt proportion of a PCD material used for the production, the cobalt proportion being greater than 10%, and    grinding the guide gib on its working surface so as to match a nominal diameter of the tool by grinding with diamond abrasive.