Method for Making a Bit of a Tool

Abstract

Disclosed is a method for making a bit of a tool. The method includes the steps of providing a blank, forging, cutting and pressing. The size of the blank is determined according to the size of the bit. By the forging, the blank is made with a connective section and a neck. The connective section is formed with a polygonal profile, a first chamfer at an end thereof and a second chamfer at another end thereof. The neck extends from the polygonal connective section and includes ribs separated from one another by grooves. By the cutting, the neck is made with a tapered section. By the pressing, the tapered section of the neck is turned into a driving section of the bit to reduce the length of the tapered section of the neck but increase the width of the tapered section of the blank.

1 . A method for making a bit of a tool including the steps of:
 providing a blank with a size according to the size of the bit;   forging the blank so that it includes:
 a connective section formed with a polygonal profile, a first chamfer at an end thereof and a second chamfer at another end thereof; and 
 a neck extending from the polygonal connective section and including ribs separated from one another by grooves; 
   cutting the neck to provide a tapered section;   turning the tapered section of the neck into a driving section of the bit by pressing to reduce the length of the tapered section of the neck but increase the width of the tapered section of the blank.   
     
     
         2 . The method according to  claim 1 , wherein the connective section of the bit includes a cavity defined therein. 
     
     
         3 . The method according to  claim 1 , wherein the driving section of the bit is cruciform. 
     
     
         4 . A method for making a bit of a tool including the steps of:
 providing a blank with a size according to the size of the bit;   providing at least one mold;   forging the blank into the bit with the mold so that the bit includes:
 a connective section with a hexagonal profile, a cavity defined therein, a first chamfer at an end thereof, and a second chamfer at another end thereof; 
 a neck extending from the connective section, wherein the width of the neck is smaller than that of the connective section; and 
 a driving section formed at an end of the neck. 
   
     
     
         5 . The method according to  claim 4 , wherein the connective section of the bit includes a cavity defined therein. 
     
     
         6 . The method according to  claim 4 , wherein the driving section of the bit is a hexagonal section. 
     
     
         7 . The method according to  claim 4 , wherein the driving section of the bit is a flower-like section. 
     
     
         8 . A method for making a bit of a tool including the steps of:
 providing a blank in the form of a circular rod with a size according to that of the bit;   providing at least one mold;   forging the blank with the mold so that the blank includes:
 a connective section with a hexagonal profile, a first chamfer at an end thereof, and a second chamfer at another end thereof; and 
 a neck extending from the connective section, wherein the width of the neck is smaller that of the connective section; 
   squeezing a portion of the neck into a driving section with a reduced size.   
     
     
         9 . The method according to  claim 8 , wherein the connective section of the bit includes a cavity defined therein. 
     
     
         10 . The method according to  claim 8 , wherein the driving section of the bit is made with a flat configuration.