| 摘要 |
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.
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