Recycling process for cutting tools for machining printed circuit boards

Abstract

A recycling process for cutting tools for machining printed circuit boards aims at recycling and reclaiming worn cutting tools. The process includes: grinding off the edge section of the worn cutting tools, complementing one end of the worn cutting tool to achieve a desired length, and forming a new edge section at the other end thereof. The worn cutting tools may thereby be effectively recycled and reclaimed to reduce production cost.

What is claimed is:  
     
         1 . A recycling process for cutting tools of machining printed circuit boards for recycling a worn cutting tool which has an edge section and a shank, comprising the steps of: 
 grinding off the edge of the edge section;    bonding a pad rod to the bottom end of the shank for supplementing the total length; and    forming a new edge of a smaller dimension at the edge section.    
     
     
         2 . The recycling process of  claim 1 , wherein the pad rod is bonded to the bottom end of the shank by plane soldering.  
     
     
         3 . The recycling process of  claim 1 , wherein the step of bonding a pad rod to the bottom end of the shank for supplementing the total length includes: 
 forming a fastening section of a smaller dimension at bottom end of the shank; and    engaging a sleeve with the fastening section to supplement the total length.    
     
     
         4 . The method of  claim 3 , wherein the sleeve has an inner cavity for engaging with the fastening section.  
     
     
         5 . The method of  claim 3 , wherein the sleeve engages with the fastening section by welding.  
     
     
         6 . A recycling process for cutting tools of machining printed circuit boards for recycling a worn cutting tool which has an edge section and a shank, comprising the steps of: 
 grinding off the edge of the edge section;    coupling the edge section with a sleeve; and    forming a new edge section at the shank.    
     
     
         7 . The recycling process of  claim 6 , wherein the sleeve has a bonding section mating with the ground edge section for bonding thereof.  
     
     
         8 . The recycling process of  claim 6 , wherein the sleeve is bonded to the edge section by soldering.  
     
     
         9 . The recycling process of  claim 6 , wherein the sleeve is bonded to the edge section by forced coupling.