| 摘要 |
<p>When rings are produced from one metal plate, the number of twists is determined so that a predetermined characteristic pattern can be formed on the surface of a men's ring (2) and a women's ring (3) regardless of the sizes of the rings. The characteristic pattern depends on the manner that a plurality of metal plates are laminated, for example, types, thicknesses, etc., of the metal plates. The number of twists is determined on the basis of the information. A metallic body production method capable of systematically managing a production process when a plurality of rings respectively having a common characteristic pattern are formed from a metal plate which is an original plate, can be provided.</p> |
