Patent ID: 9630280
Date: 2017-04-25
CPC Classifications: B23P,B29C,B29L,Y10T

Claim:
1. A method for producing a single-sided mold, comprising: S S inserting a second engraving and milling cutter mounted on the engraving and milling machine into the engraved hole for further engraving, wherein under control of the engraving and milling machine, the second engraving and milling cutter revolves on its own axis and then exerts a vertical force in the engraved hole, and then exits out of a hole to be coined after the hole to be coined is formed; and wherein the first engraving and milling cutter is shaped as a pointed cutter with flat bottom or a straight cutter, and the second engraving and milling cutter is shaped as a pointed cutter with flat bottom with a smaller width and angle of knife tip than that of the first engraving and milling cutter; and depth of the engraved hole is smaller than that of the hole to be coined; S S wherein a side wall of the hole to be coined matches shape of the hardened tip, and radius of a cusp on the end of the coining hole formed by the coining process is less than 0.02 mm.