Coin Blanks Mold Research And Design

The die, which is very essential equipment in the production of coin blank, contains punching die and rolling die. Because the technological process of blanking can be divided into punching and rolling. On account of different process demands, dies are different in the material selection, structural design and manufacturing technology. But they must meet the demands of volume-produce, heavy-use and anti-falsification.Firstly, this research paper introduces the developing situation of the blanking dies, and presents its contents and significance. The die has very important influence to the shape of blank edge, the quality of every single and surface quality of the final products. Increasing working life of dies is significant to protect large quantities and continuous operation of production, also reduce the cost of production. Meanwhile, increasing the technology of dies provides support to enhancing the coin technology and the level of anti-falsification. So it has strong practical significance to research the engineering practice of the blanking die.Then, what is start off the choice of coin material and the process of blanking, this paper discusses some key techniques of blank dies such as the technical parameters of punching dies and rolling dies, the working life of dies. Especially, the paper, which uses the punching die of round coin, rolling die of shaped coin and the rolling die with edge groove as typical examples, conducts a program research and specific design. Finally, the paper has checked, summarized and analysed these three dies with the manufacture and experiment of them.