JPH03218705A - Combination ring and its manufacture - Google Patents

Abstract

PURPOSE:To form the combination ring by simple machining without casting it by combining plural pieces of simple substance rings of a stripe pattern of different color tones by shifting each pattern, inserting them into an annular groove of a groove ring, and executing stretch forming. CONSTITUTION:On the outside peripheral surface of a base ring 1 consisting of a gold alloy, plural pieces of grooves 2 in the axial direction are provided at equal intervals. A precious metal piece 3 consisting of a platinum alloy whose color tone is different from that of the base ring 1 is set to a size which can be inserted into the groove 2 of the base ring 1. On the outside peripheral surface of a groove ring 4 consisting of gold alloy, an annular groove 5 of a size into which two pieces of base rings 1 can be inserted is provided. In such a state, the precious metal piece is inserted into each groove 2 of the base ring 1, brazed by applying heat of >=700 deg.C through a gold brazing filler metal, fixed integrally and a simple substance ring 7 of a horizontal stripe pattern is formed. Subsequently, two pieces of precious metal pieces 3 are tacked and combined with an adhesive agent by shifting each position, inserted into the annular groove of the groove ring 4, and by executing stretch forming, they are formed a little thinly so that two pieces of simple substance rings 7 and the groove ring 4 become one body.

Description

[Detailed Description of the Invention] Peel Retired Emperor Skin ■ Min! The present invention relates to a multilayer ring called a combination ring, and particularly to a multilayer ring in which various patterns are integrally formed by combining precious metals of different colors on the outer peripheral surface, and a method for manufacturing the same.

Traditionally, rings that combine precious metals of different tones to form a pattern on the outer circumferential surface are made by pasting strips of precious metals of different tones together to make a plate, then rolling this plate and welding both ends. In some cases, the base ring had multiple grooves and a metal piece with a different color tone from the base ring was inserted into each groove and fixed to the base ring. However, since the former method is not a seamless ring, the seams are exposed, and there is a risk that the rings will break at the seams if expanded, so each size is manufactured separately from the beginning. It had to be thrown away, resulting in high costs.
In the latter method, multiple grooves were formed on the base ring using a carving machine, and then the ring was used as a prototype and manufactured by casting. However, these methods could only produce simple striped patterns, and it was not possible to produce a twill pattern in which parts of different colors or diamond-cut patterns alternated, which was a strong demand. In addition, there were drawbacks such as the formation of cavities during casting and poor processing accuracy.

The present invention eliminates these drawbacks and creates a color tone by shifting the single rings forming the striped pattern from each other. The objective is to create a combination ring in which different parts or parts with different diamond-cut patterns alternate in a twill pattern, and a manufacturing method that can form it by simple machining without casting. In order to solve the above-mentioned problem, the present inventor provided a plurality of grooves in the axial direction or inclined with the axis on the outer peripheral surface of the ring base,
A base metal with a different color tone from the ring base is embedded in each groove to form a single ring, and a plurality of these single rings are assembled with the different color tones shifted from each other, and then an annular shape is formed on the outer peripheral surface of the groove ring. The present invention has invented a method for manufacturing a combination ring by expanding a groove ring after being inserted into a groove to integrally form a plurality of single rings and a groove ring, and a combination ring manufactured by the method.

Single ring used in the present invention, base metal embedded in the groove,
The groove rings are made of precious metals such as gold, silver, platinum, or alloys thereof, and are used in combinations of precious metals with different colors. The design effect can be further improved by placing different diamond cut patterns in vertical and horizontal directions on the surfaces of the twill-like base ring and the embedded portion.

To form a single ring by embedding base metals of different tones in the grooves of the base ring, you can embed precious metal pieces of different tones and secure them by brazing with gold solder, etc., as shown in Figure 3. However, as shown in Figures 12 and 13, precious metals with different tones are melted and poured into the grooves, and after cooling and solidifying, the outer circumferential surface is cut to remove the precious metals that overflow from the grooves to form a single ring. You can.

■ The present invention combines a plurality of single rings with horizontal striped patterns or diagonal striped patterns of different tones with their patterns shifted from each other, and after cutting patterns etc. are also added, they are inserted into the annular groove of the grooved ring. Since it is integrally formed by expansion molding, it is possible to form a twill-like combination ring in which parts of different colors and cut patterns are alternated.

In addition, work hardening occurs during expansion molding, so even if the combination ring has a complex twill pattern, it will be a seamless combination ring with a thin wall and sufficient strength.

Urasen■ An embodiment of the present invention will be explained with reference to the drawings. Figures 1 to 6
In the illustrated embodiment, reference numeral 1 denotes a base ring made of gold alloy, and a plurality of axial grooves 2 are provided at equal intervals on the outer peripheral surface of the base ring. 3
is a precious metal piece made of a platinum alloy with a different color tone from the base ring 1, and is sized so that it can be inserted into the groove 2 of the base ring L. Reference numeral 4 denotes a groove ring made of a gold alloy, and an annular groove 5 is provided on the outer peripheral surface of the groove ring, the size of which allows two base rings 1 to be inserted therein.

To manufacture a combination ring 6 with a twill weave pattern, as shown in FIG. They are brazed by applying heat to form a single ring 7 having a horizontal striped pattern. Here, a different cut pattern may be formed on the surfaces of the base ring 1 and the precious metal piece 3.

Next, as shown in FIGS. 4 and 5, two individual rings 7 that have been annealed and softened by brazing are assembled by temporarily fixing them with adhesive with the precious metal pieces 3 shifted from each other, and grooves are formed. Insert into the annular groove 5 of the ring 4. Thereafter, expansion molding is performed by punch expansion processing (not shown) to form a slightly thin wall so that the two single rings 7 and the groove ring 4 are integrated. At this time, since the combination ring 6 is work-hardened by expansion molding, it maintains sufficient strength even if the wall thickness is reduced, and there is no risk of deformation.

7 to 11 show other embodiments, the combination ring 6I shown in FIG. The combination rings 68 and 63 are a combination of three single rings 7l with a diagonal striped pattern in a continuous wave shape, and a combination of diagonal striped patterns alternately. The combination ring 64 shown in Fig. 10 is a combination of three single rings 7 with a horizontal striped pattern, with the patterns slightly shifted. The combination ring 6S shown in FIG. 11 is a combination of different parts of the diamond cut pattern in an alternating twill pattern, and the other structures and functions are the same as those of the previous embodiment.

FIGS. 12 and 13 are explanatory diagrams of an embodiment in which the single ring 6 is manufactured by another method, in which precious metals of different colors are melted and embedded in the groove 2 of the base ring 1, and the metal is cooled and solidified. After that, the outer peripheral surface is cut and the portion overflowing from the groove 2 is removed to form a single ring 6. According to the combination ring and its manufacturing method of the present invention, a single ring with a striped pattern is fitted with the pattern portions staggered, and then inserted into a groove ring and expanded to form an integrated seamless ring. This made it possible for the first time to produce a twill weave pattern in which parts of different tones and cut patterns were alternated. In addition, since this combination ring can be manufactured by simple machining rather than casting, it does not generate cavities and can be manufactured with high processing accuracy.

[Brief explanation of drawings]

Fig. 1 is a perspective view of the combination ring of the present invention, and Fig. 2 is a perspective view of the combination ring of the present invention.
3 to 6 are process explanatory diagrams showing the manufacturing method of the present invention, FIGS. 7 to 11 are front views showing other embodiments, and FIGS. 12 to 13 are FIG. 3 is an explanatory diagram showing another method of manufacturing a single ring. l... Base ring, 2... Groove, 3... Base metal piece, 4... Groove ring, 5... Annular groove, 6, 6++6g+ 6. ．． 6 4+ 6 5...combination ring, 7, 7l single ring.

Claims (2)

[Claims] (1) A plurality of grooves are provided on the outer peripheral surface of the ring base in the axial direction or inclined with respect to the axis, and a single ring with a base metal of a different color tone than the ring base embedded in each groove, and a single ring provided on the outer peripheral surface. A combination ring comprising a groove ring in which a plurality of the single rings are fixed in an annular groove with different color tones shifted from each other. (2) A plurality of grooves are provided in the outer peripheral surface of the ring base in the axial direction or inclined to the axis, and a base metal having a different color tone from the ring base is embedded in each groove to form a single ring. Combine multiple rings so that the different color tones are shifted from each other, insert them into an annular groove provided on the outer circumferential surface of the groove ring, and then expand and mold the groove ring to form multiple single rings and the groove ring in one piece. A manufacturing method for combination rings.