In a case of a “mark left” type, a slit is formed on a line side (slit side) of a joint portion. The slit is formed, for example, with a scroll saw. By the formation of the slit, a length of the joint portion in a direction orthogonal to an axial direction of a single ring is set to approximately 0.7 mm. In a case of a “mark removed” type, a slit and a slit are formed respectively on the line side (slit side) and a side opposite thereto of the joint portion. Those slits are formed, for example, with the scroll saw. By the formation of those slits, the length of the joint portion in the direction orthogonal to the axial direction of the single ring is set to approximately 0.8 mm.
Form the oval rings 25 from the circular rings 23. Then, twist the oval rings 25, for instance three times, around center of the longitudinal direction, and create the ring portion for male 31 and the binding portion at the both side of the binding portion. After that, obtain the rings for male 2 and the rings for female 3 by cutting the binding portion.
On the surface of the spread multi-layered metal object, as reaches from outside to inside of step-wise, the pattern shaped concave is formed by reaching the lower layer of metal layer of the metal layer. The concave is formed as step-wise, the innermost reaches inside of the metal layer from the surface, the outer reaches the top of the metal layer from the surface, and the outermost reaches the top of the metal layer. The metals removed to form the concave remains inside and effectively control on the pattern part obtained at the end. As a result, able to form desired pattern stably.
B44C 1/22 - Enlèvement superficiel de matière, p. ex. par gravure, par eaux fortes
B32B 15/01 - Produits stratifiés composés essentiellement de métal toutes les couches étant composées exclusivement de métal
B21C 37/02 - Fabrication de tôles, barres, fils, tubes ou profilés métalliques ou de produits semi-finis similaires, non prévue ailleursFabrication de tubes de forme particulière des tôles
B44C 3/00 - Procédés, non expressément prévus ailleurs, pour la réalisation de structures ornementales
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.
A ring manufacturing method of the present invention includes: a laminating step laminating a plurality of metal plates; a junction step jointing the plurality of metal plates by heating and giving pressure; a twisting step heating and twisting the plurality of metal plates after the junction step, an angle stick processing step performing twist processing to the plurality of metal plates to make angle stick shape, a slit formation step forming two longitudinal slits in angle stick component, a ring formation step opening the slits from inside thereof to make two ring components, and a cutting step cutting and separating the two ring components into two rings.
When a ring and a pendant are produced from one metal plate, the number of twists is determined so that a predetermined characteristic pattern is produced on surfaces of a ring for men and a ring for women, despite the difference in size therebetween. The characteristic pattern depends on the way that a plurality of metal plates are laminated, for example, the type, thickness, etc., of the metal plate. The number of twists is determined on the basis of such information.
When manufacturing a ring and a pendant from a single metal plate, the number of the twist is determined so that a predetermined feature pattern may occurs regardless size on the surface of a male ring and a female ring. The feature pattern depends on the method of the laminating of two or more metal plates, the kind of metal plate, thickness, etc. for example. The number of times of twist concerned is determined based on these information.
brevets
