Process for manufacturing copper or iron ore series of noble metal commemorative coins or medals and dies used thereby

Abstract

The invention relates to a process for manufacturing copper or iron ore series of noble metal commemorative coins or medals and dies used thereby. The process comprises the following steps: a) preprocessing and molding the blanks of copper or iron ore series of dies, namely, processing the basic profiles of the dies; b) designing the profile parameters of the copper or iron ore and the tri-dimensional curved surface on the surface of the copper or iron ore by a tri-dimensional relief design software; c) engraving the copper or iron ore series of dies by a control computer numerical (CNC) engraving machine via a converted engraving cutting path file; d) utilizing a lathe, a machining center and a linear cutting device to process out a punch and a die corresponding to each other, and punching blank cakes for copper or iron ore series of products; and f) processing copper or iron ore series of die bolsters by the linear cutting device based on the designed size, putting the dies into dies bolsters and carrying out stamping. The copper or iron ore series of noble metal commemorative coins or medals manufactured by the invention have the characteristic of good comprehensive benefits, such as stable quality, high yield, short processing period, low production cost, small raw material consumption and the like.

Description

technical field [0001] The invention relates to a method for preparing precious metal commemorative coins or badges, in particular to a process for making collar series precious metal commemorative coins or badges and a mold used in the process. Background technique [0002] In the past, commemorative coins or chapters were usually simple and regular round products, and there were also special-shaped commemorative coins or chapters such as squares and plum blossoms, but the overall surface of the products was flat and the curves were simple. Its conventional production method is to produce qualified products through the processes of plate punching, smoothing, annealing, polishing and embossing. However, with the development of the situation, it is necessary to produce collar series commemorative coins or chapters with more beautiful and complex shapes, and the shape of such commemorative coins or chapters is complex, the curved surface of the product surface is difficult to ...

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the problems existing in the above-mentioned prior art, and provides a kind of production process of collar series precious metal commemorative coins or badges that can guarantee product quality, high pass rate, short processing cycle and low production cost; The quality of relief is difficult to guarantee, and the problem of insufficient embossed patterns on the product

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