JP2008043541A - Method of manufacturing finger ring - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide general consumers with an inexpensive finger ring manufactured by a method of manufacture permitting volume production. <P>SOLUTION: The finger ring 1 is manufactured by uniting an inner ring 20 with a ring-shaped outer ring 10. The method of manufacture comprises a first process for molding one end of an outer ring blank 11 in the cross direction in a prescribed shape with a first die 4 and a first punch 3 having prescribed shapes to form a first side wall 13; a second process for engaging the inner ring 20 with the inner diameter of the molded outer ring body 12 and the first side wall 13; and a third process for molding the other end of the outer ring body 12 in the cross direction along the inner ring 20 by using a second die 6 and a second punch 5 having prescribed shapes to form a second side wall 14. The method of manufacture further comprises a fourth process for deforming the outer and inner rings along the outer surface after the third process. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a method for manufacturing a ring, and more particularly to a method for manufacturing a ring formed in multiple layers by using two or more materials.

A ring is a typical ornament, but in recent years it has become indispensable for marriage like an engagement ring. For this reason, rings have come to be favored even by relatively young people. However, the ring is mainly made of a noble metal, has many manual processes, and its production cost is very high, so the selling price is also very expensive. For this reason, it is difficult to purchase easily. Therefore, manufacturers are making efforts day and night to reduce the cost as much as possible without reducing the quality of the appearance as much as possible and to provide general consumers with a ring with a low selling price.

  In order to reduce the selling price, it is first to reduce the manufacturing cost, but in order to make the manufacturing cost cheap, mass production of the manual process or the precious metal as the main raw material to other inexpensive materials Or is considered. However, since the ring is a decorative product, mass production is difficult, and the use of an inexpensive material loses its existence value, and the material cannot be changed. For example, instead of using platinum mulch material, the surface is made of platinum, but the part that is not visible from the outside is precious metal or gold or silver which is somewhat cheaper Is the way to use.

  As a conventional technique disclosing such a concept, as shown in Patent Document 1, adhesion, pressure bonding, or soldering is performed in a state in which a noble metal thin plate such as platinum is laminated on a single outer peripheral surface of a metal wire having a deformed cross section. A ring was formed by laminating it into a ring shape after pasting it together by attaching. This provided a dignified two-tone ring with extremely high commercial value.

  Further, as shown in Patent Document 2, a rectangular metal strip having a slightly narrow width is superimposed on a metal bullion plate, and both sides of the metal bullion plate are folded back to hold the lower plate to form a ring. Thus, the product itself can be made lighter, and the use of a precious metal sheet requires less material, so that it can be provided to general consumers at a lower cost.

  Moreover, the structure of a ring called a general combination is shown in FIG. (A) is a side view of a ring, (b) shows an example of a CC ′ cross-sectional view of a ring having a flat outer shape, and (c) is a CC diagram of a ring having an arc-shaped outer shape. 'Another example of a cross-sectional view is shown. As shown in (a), the ring 71 is formed by laminating two layers of rings having two different diameters. For example, the outer ring 72 is platinum (Pt) and the inner ring 73 is gold. A two-tone ring 71 made of (Au) is formed. As this manufacturing method, an annular shape is formed so that the outer shape of the inner ring 73 is fitted into the inner diameter of the outer ring 72, and then the outer ring 72 is fixed to the inner ring 73 by brazing and diffusion bonding the bonding surface 74. I was making a ring.

JP 57-31805 A Japanese Utility Model Publication No. 60-86119

As described above, the idea of forming a ring using two kinds of the same material or forming a ring using two different materials has been conventionally disclosed in Patent Document 1. 11 and the method shown in FIG. 11 are mainly performed by fixing the material by brazing. In such a process, especially when the materials are different, the melting points of the respective materials are naturally different, so that the joining surface 74 is difficult to braze and the degree of difficulty in mass production is high, so the yield and the like are also poor and the cost is high. It was.

That is, in the brazing, the yield is reduced due to the occurrence of pinholes and the like, and the cost is high due to the large amount of time and labor required for the secondary processing due to the protrusion of the brazing material. In addition, although the adhesion | attachment etc. can be considered as a joining method, in the case of adhesion | attachment, it has the fault that a peeling defect generate | occur | produces. Furthermore, in the thing shown in patent document 2, since it is the same kind of material, there is no difficulty in brazing, but since the thin plate is made into two layers, the space between the plates becomes hollow, and the weight feeling when fitted on the finger However, there is a drawback that it is a ring with little change because the same kind of material is used to change the appearance.

  The present invention solves such a problem, and can be mass-produced relatively easily by adopting a method of forming using a mold as a manufacturing method, and can be realized by using a multilayer material. The purpose is to provide a low-cost ring to general consumers while having a varied appearance.

The method for manufacturing a ring according to claim 1 of the present invention for solving the above-described problem is that when the ring is formed by combining the outer ring and the inner ring formed in a ring shape, one end in the width direction of the outer ring. A first step of forming a first side wall by molding the side into a predetermined shape along the outer periphery of one end side of the inner ring, and the inner ring on the inner diameter of the first side wall of the molded outer ring A second step of engaging the outer periphery on one end side of the outer ring, and forming a second side wall by forming the other end in the width direction of the outer ring into a predetermined shape along the outer periphery on the other end side of the inner ring. It consists of three steps.
In this way, since the main process is performed by molding with a mold, it is possible to reduce troublesome manual processes, so it is possible to provide a low-cost ring, and the use of two types of materials can change the process. A ring can be provided.

The method for manufacturing a ring according to claim 2 of the present invention is characterized in that, in the configuration of claim 1, at least one of the outer ring and the inner ring has a multilayer structure.
Thus, since one side has a multilayer structure, an inexpensive ring can be provided because less expensive material can be used.

The ring manufacturing method according to claim 3 of the present invention is characterized in that, in the configuration of claim 2, the outer ring has a structure in which flat plates are laminated in a ring shape.
As described above, since the outer ring is formed in a multilayer structure, the most expensive material can be formed of a thin plate, and the cost can be further reduced.

According to a fourth aspect of the present invention, there is provided the ring manufacturing method according to the first to third aspects, wherein the first step uses a die having a predetermined shape and a punch having a predetermined shape. The first side wall is formed.
Thus, since it is a manufacturing method using the punch and die which are metal mold | dies, mass production is possible and it can contribute to a cost reduction.

According to a fifth aspect of the present invention, there is provided the ring manufacturing method according to the first to fourth aspects, wherein the third step uses the die having a predetermined shape and the punch having the predetermined shape. The second side wall is formed.
Therefore, mass production is possible.

According to a sixth aspect of the present invention, in the ring manufacturing method according to the first to fifth aspects, after the third step, the outer ring is deformed to match the outer peripheral surface of the inner ring. It has the process.
In this way, a ring with more variety can be provided by the surface matching step.

In the method for manufacturing a ring according to claim 7 of the present invention, when a ring is formed by combining an outer ring and an inner ring formed in a ring shape, one end of the inner ring in the width direction is set as one end of the outer ring. A fifth step of forming a third side wall by forming it in a predetermined shape along the outer periphery of the outer ring, and an outer periphery of one end side of the outer ring on the inner diameter of the third side wall of the molded inner ring. And a seventh step of forming a fourth side wall by forming the other end in the width direction of the inner ring into a predetermined shape along the outer periphery of the other end of the outer ring. It is characterized by that.
In this way, since the main process is performed by molding with a mold, troublesome manual work can be eliminated, so that a ring having a change can be provided by using two kinds of materials together with providing a low-cost ring.

According to an eighth aspect of the present invention, in the structure of the seventh aspect, at least one of the outer ring and the inner ring has a multilayer structure.
Thus, by making one side into a multilayer structure, an expensive material can be decreased and an inexpensive ring can be provided.

The method for manufacturing a ring according to claim 9 of the present invention is characterized in that, in the configuration of claim 8, the inner ring has a structure in which flat plates are laminated in a multilayer shape.
By doing in this way, the color which appears on an outer periphery can be expressed by three colors, and the ring of the special structure which was rich in change can be provided.

According to a tenth aspect of the present invention, in the ring manufacturing method according to the seventh to ninth aspects, the fifth step uses the inner ring using a die having a predetermined shape and a punch having a predetermined shape. The third side wall is formed.
Thus, since it can manufacture with a dice | dies and a punch, mass production is also possible and it can contribute to a cost reduction.

According to an eleventh aspect of the present invention, in the ring manufacturing method according to the seventh to tenth aspects of the present invention, in the sixth step, the inner ring is formed using a die having a predetermined shape and a punch having a predetermined shape. The fourth side wall is formed.
This can reduce the cost.

According to a twelfth aspect of the present invention, in the ring manufacturing method according to the seventh to eleventh aspects, after the sixth step, the inner ring is deformed to match the inner peripheral surface of the outer ring. It has 8 processes.
This enables cost reduction by mass production.

According to a thirteenth aspect of the present invention, there is provided the ring manufacturing method according to the first to twelfth aspects, wherein a brazing material flow stop portion is provided at an end matching portion between the outer ring and the inner ring. It is said.
Thereby, the flow of excess brazing material to the outer periphery can be prevented and the process can be simplified.

  Since the present invention uses a manufacturing method in which the main process uses a die and a punch, which are molds, to form a material, it can be mass-produced, thus contributing to cost reduction and uniform quality. We were able to provide a very good quality ring and a variety of rings.

  In the best mode of the present invention, when a ring is formed by combining an outer ring and an inner ring formed in a ring shape, one end in the width direction of the outer ring is used as an inner ring by using a die and a punch having a predetermined shape. A first step of forming the first side wall by forming the first side wall into a predetermined shape along the outer periphery on one end side of the inner ring, and engaging the outer periphery on the one end side of the inner ring with the inner diameter of the first side wall of the molded outer ring A second step of forming a second side wall by forming a second shape of the outer ring into a predetermined shape along the outer periphery of the other side of the inner ring using a die and a punch having a predetermined shape. 3 steps, and further, after the third step, there is a fourth step in which the outer ring and the inner ring are deformed in accordance with the outer peripheral surface thereof.

  Furthermore, as another preferred embodiment of the present invention, when a ring is formed by combining an outer ring and an inner ring formed in a ring shape, one end side in the width direction of the inner ring using a die and a punch having a predetermined shape A third step of forming a third side wall by forming the outer side ring into a predetermined shape along the outer periphery on one end side of the outer ring, and the outer periphery on the one end side of the outer ring on the inner diameter of the third side wall of the molded inner ring. And a fourth step by forming the other end in the width direction of the inner ring into a predetermined shape along the outer periphery of the other end side of the outer ring by using a die and a punch having a predetermined shape. The method further includes a seventh step of forming the side wall, and further includes an eighth step of deforming the inner ring in accordance with the inner peripheral surface of the outer ring after the seventh step.

A first embodiment of the present invention will be described with reference to the drawings. 1 and 2 are views showing a method for manufacturing a ring according to the present invention, wherein (a) to (g) show cross-sectional views of each step, (a) to (c) show the first step, (d ) To (e) are the second step, and (f) to (g) are the third step. 3A and 3B show an example of a completed ring formed according to the present invention, in which FIG. 3A is a side view and FIG. 3B is a cross-sectional view taken along line A-A ′ in FIG. 1 and 2, 1 is a completed ring, 3 is a first drawing punch, 4 is a first drawing die, 5 is a second drawing punch, and 6 is a second drawing die. 10 is an outer ring, 11 is an outer ring blank, 12 is an outer ring body, and 20 is an inner ring.

  In the first step, first, the outer ring blank 11 is fitted to the inner peripheral fitting portion 32 of the first drawing punch 3 as shown in FIG. 5A, and until it hits the abutting portion 31 as shown in FIG. insert. Then, as shown in FIG. 3 (c), the outer periphery of the outer ring blank 11 is inserted into the outer periphery fitting hole 41 of the first drawing die 4, and the first drawing punch 3 abuts on the first drawing die 4 side. One end in the width direction of the outer ring blank 11 is sandwiched between the side wall forming portion 33 of the first drawing punch 3 and the side wall forming surface 42 of the die 4 by applying a force, so that the inner ring 20 A first side wall 13 having a predetermined shape (circular in the figure) that is an outer peripheral shape is formed to form the outer ring body 12.

  In the second step, as shown in (d), one end of the inner ring 20 from the side where the first side wall 13 of the outer ring body 12 removed from the first drawing punch 3 is not formed is shown in (e). Until the first side wall 13 is engaged. At this time, since the inner periphery of the outer ring body 12 is substantially the same diameter as the outer periphery of the inner ring 20, the inner ring 20 is formed so as to be fitted by static engagement. It is formed so as to fit the inner circumference of one side wall 13.

In the third step, the side where the first side wall 13 of the outer ring body 12 is not formed is inserted into the outer periphery fitting hole 61 of the second drawing die 6 as shown in FIG. And (g) As shown in the figure, a side wall forming surface 62 formed on the second drawing die 6 by applying a force from the abutting surface 51 of the second drawing punch 5 from the first side wall 13 side of the outer ring body 12. Press to. Thus, the outer ring body 12 sandwiched between the side wall forming surface 62 of the second drawing die 6 and the outer periphery on the other end side of the inner ring 20 has a predetermined shape (circular in the figure) that is the outer peripheral shape of the inner ring 20. By forming the two side walls 14 and forming the outer ring 10, the ring 1 having a circular outer periphery is completed.
In addition, after the said formation process, finishing rings, such as chamfering and polishing, are added suitably, and a final ring is completed.

  FIG. 3 shows an example of a ring completed through the process of the present invention, which is a ring 1a having a flat outer periphery. Here, for example, when the ring 1a is formed of gold (hereinafter referred to as “Au”) as the material of the inner ring 21 and platinum (hereinafter referred to as “Pt”) as the material of the outer ring 15, the inner ring 21 is fitted to the finger. Now, you can only see platinum, so it looks just like you're wearing Muku's Pt ring. Even if the ring is removed, the inside is Au, so it is not inferior to Muku's Pt. However, since Au is about ½ the cost of Pt, the material cost for the ring as shown in FIG. 3 is about 2/3 of the amount used compared to Muku's Pt ring. It can be made and a significant cost reduction can be achieved.

FIG. 4 shows a cross-sectional view of a ring formed by laminating three or more layers of materials. (A) is a two-layer structure of the outer ring, (b) is a two-layer structure of the inner ring, (c ) Is a ring having a structure in which two layers each of an outer ring and an inner ring are laminated. (A) In the figure, the ring 1b is formed by forming the first side wall 13a and the second side wall 14a on the side surface of the inner ring 22 by using plate materials having about the same width for the outer ring a16 and the outer ring b17. It is. Here, the outer ring a16 at the outermost periphery is made of a noble metal material Pt, the material of the outer ring b17 at the inner periphery is made of Au, for example, and the inner ring 22 is made of light material such as titanium (hereinafter “Ti”). Is used to form the ring 1b.

In this case, it is not necessary to use a thick plate for the expensive noble metal Pt, and Au or Ti, which is a material cheaper than Pt, is used, so that the cost can be greatly reduced as compared with Pt Muku. Furthermore, since the expensive precious metal Pt is in the disaster collection, it looks expensive, and by attaching an R to the inner side surface 19a of the ring 1b as shown in the figure, two-tone two-colors when viewed from the side. It is possible to form a ring 1b that is visible and has a variety of design changes. Furthermore, by using Ti for the inner ring 22, metal allergy can be prevented and a skin-friendly ring can be provided.

Next, with reference to FIG. 5B, the ring 1c has a shape in which an inner ring b24 is built in between the outer ring c18 and the inner ring a23 so as not to be seen from the outside. Here, Pt which is a noble metal is used as the material of the outer ring c18, Au is used as the material of the inner ring a23 which is the innermost periphery, and silver (hereinafter referred to as “Ag”) is interposed between the outer ring c18 and the inner ring a23. The ring 1c is formed using an inexpensive material such as copper (hereinafter referred to as “Cu”). By doing so, it is possible to use an inexpensive material, which can greatly contribute to cost reduction and provide a ring 1c having a two-tone design when viewed from the side. If Ti is used for the inner ring a23, a skin-friendly ring is completed.

Further, (c) shows a structure in which (a) and (b) are integrated, and the ring 1d has a further inner ring between two outer rings having the same width and the inner ring. Has a built-in shape. The outer ring a16 at the outermost periphery is made of Pt, Au is used as the material for the second outer ring b17, Ti is used for the innermost inner ring a23, and the inner ring b24 is built in. The ring 1d is formed using Ag or Cu. As a result, it is possible to use an inexpensive material that is easy on the skin while exhibiting a two-tone pattern in appearance, thereby further reducing the cost.

The manufacturing method of FIG. 4 will be briefly described. (A) In the case of the finger ring 1b in the figure, a Pt plate material which is the material of the outer ring a16 and an Au plate material which is the material of the outer ring b17 are bonded or formed as a clad material. The outer ring a16 and the outer ring b17 have substantially the same width. The laminated plate member is formed into a ring-shaped pipe by making the short side into an annular shape and then brazing. This ring-shaped pipe is cut to a required length to form the outer ring blank 11 (see FIG. 1), and the first side wall 13a and the second side wall 14a are formed on the side surface of Ti which is the material of the inner ring 20, as shown in FIG. The ring 1b is completed through a post-polishing process or the like after forming by the method shown in FIG. 2 and applying R to the inner peripheral side surface 19a of the ring.

Next, when manufacturing the ring 1c shown in FIG. 6B, the material of the inner ring a23 and the material of the inner ring b24 are laminated and bonded or clad, and in some cases, they are laminated by lamination. The inner ring 20 is formed by forming a ring-shaped pipe with the short side thereof being annular and cutting it into a required length. Then, Pt which is the material of the outer ring c18 is laminated on the outer periphery of the inner ring 20, and after forming the first side wall 13b and the second side wall 14b by the method shown in FIGS. 1 and 2, the inner peripheral side surface 19b is processed and polished. The ring 1c is completed through processes such as these.

The ring 1d can be formed in the same manner when using an outer ring and an inner ring that are laminated. That is, as shown in FIG. 3C, the outer ring blank 11 in which Pt and Au are laminated and the inner ring 20 in which Ti and Ag are laminated are formed as shown in FIGS. Then, the outer ring is formed on the outer periphery of the inner ring 20, the first side wall 13 c and the second side wall 14 c are formed by the method shown in FIGS. 1 and 2, and the polishing process is performed on the inner peripheral side surface 19 c, and the ring 1 c is formed. Finalize.
As described above, by using materials laminated on the outer ring and / or the inner ring, inexpensive materials can be used where they cannot be seen without deteriorating the appearance quality of the ring. Can be achieved.

Next, a second embodiment of the present invention will be described with reference to the drawings. 5 and 6 show a method for manufacturing a ring according to the present invention, wherein (k) to (p) show process cross-sectional views of each process, (k) to (m) show the fifth process, Steps n) to (o) are the sixth step, and steps (o) to (p) are the seventh step. FIG. 7 is an example of a completed ring formed according to the present invention, and shows a partial cross-sectional view of the ring. 5, 6, and 7, 100 is a completed ring, 300 is a first drawing punch, 400 is a first drawing die, 500 is a second drawing punch, and 600 is a second drawing die. Reference numeral 101 denotes an outer ring, 200 denotes an inner ring, 201 denotes an inner ring blank, and 202 denotes an inner ring body.

  In the fifth step, the inner ring blank 201 is fitted into the inner periphery fitting portion 401 of the first drawing die 400 as shown in FIG. Next, as shown in (l), the outer periphery fitting hole 302 of the first drawing punch 300 is fitted to the outer shape of the inner ring blank 201. Then, the first drawing punch 300 is inserted until it hits the abutting portion 301. Thereafter, as shown in FIG. 5 (m), the inner ring blank 201 is pushed into the first drawing die 400 by the abutting portion 301 of the first drawing punch 300, and a force is applied to the first drawing punch 300 and the first drawing die 400. In addition, the inner ring body is formed by forming the third side wall 203 having a predetermined shape (circular in the drawing) on the inner ring blank 201 with the side wall forming portion 303 of the first drawing punch 300 and the side wall forming surface 402 of the first drawing die 400. 202 is formed.

In the sixth step, first, as shown in FIG. 5 (n), the side of the inner ring body 202 where the third side wall 203 is formed is engaged with the side wall surface 601 of the second drawing die 600, and the inner circumference of the outer ring 101 is engaged. 102 is inserted from the side of the inner ring body 202 where the third side wall 203 is not formed until it engages with the third side wall 203 as shown in FIG. At this time, the outer periphery of the inner ring body 202 and the inner periphery of the outer ring 100 are made to have substantially the same diameter so that they are fitted by static fit. The side surface 103 of the outer ring 101 is formed so as to fit the third side wall 203 of the inner ring body 202.

In the seventh step, as shown in (o), alignment is performed so that the contact surface 502 of the second drawing punch 500 fits into the inner peripheral surface 205 of the inner ring body 202, and as shown in (p). A force is applied to the second drawing punch 500 toward the second drawing die 600 until the respective contact surfaces 502 and 602 are brought together. Then, the end of the inner ring body 202 opposite to the third side wall 203 is bent along the shape of the side wall forming surface 501 of the second drawing punch 500, and finally the fourth side wall as shown in FIG. 204 is molded into the same shape as the side surface 103 of the outer ring 101 to form the inner ring 200. Thereby, the two-layered ring 100 is completed. Thereafter, the ring is completed through a chamfering process and a polishing process as necessary.

FIG. 7 shows an example of a ring completed through the process of the present invention, which is a ring 100 having a flat outer periphery. An example of the material of the ring 100 will be described. By using Au as the material of the outer ring 101 and Pt as the material of the inner ring 200, a gold and platinum two-tone ring can be obtained. It is possible to provide a ring having a variety of quality that cannot be obtained. In addition, by using a large amount of Au, the amount of expensive Pt can be reduced, and a ring that is inexpensive in cost can be provided while using Pt.

Next, FIG. 8 shows a cross-sectional view of a ring formed by stacking three or more layers of materials. (R) is an inner ring having a two-layer structure, (s) is an outer ring having a two-layer structure, and (t) is a ring having a structure in which two inner rings and two outer rings are stacked. (R) In the figure, the ring 100 a uses plate materials having substantially the same width for the inner ring a 205 and the inner ring b 206, and the third side wall 203 a and the fourth side wall 204 a are connected to the inner ring 200 along the side surface of the outer ring 101. Molded and completed. Here, Ti that does not cause skin allergies is used as the material of the inner ring a205 at the innermost periphery, Pt of precious metal is used as the material of the inner ring b206, and Au is used as the material of the outer ring 101 at the outer periphery. Is used to form the ring 100a. By adopting such a configuration, the outer peripheral surface of the ring can be formed in three colors, so that it can be made not only a single type of precious metal ring, but also a special ring with a great change. Further, since it is not necessary to use a lot of expensive precious metal materials, the cost can be reduced and at the same time, a ring that is gentle to the skin can be provided.

Next, in FIG. 5 (s), the ring 100b uses plate materials having substantially the same width for the outer ring a104 and the outer ring b105, and sandwiches the outer ring b105 between the outer ring a104 and the inner ring 200, thereby The third side wall 203b and the fourth side wall 204b are formed on the inner ring 200 so as to be along the side surface of 101, and are completed. Here, precious metal Pt is used as the material of the inner ring 200, Au is used as the material of the outermost outer ring a104, and the material of the outer ring 105 between the outer ring a104 and the inner ring 200 is, for example, Ag. Alternatively, the ring 100b is formed using an inexpensive material such as Cu. By forming in this way, it is possible to contribute to cost reduction by using a precious metal where visible from the outside and using an inexpensive material where it is not visible from the outside.

Further, FIG. (C) has a configuration in which FIGS. (A) and (b) are integrated. The ring 100c uses plate materials having substantially the same width for the inner ring a205 and the inner ring b206, and the outer ring a104. The outer ring b105 is made of a plate material having substantially the same width, the outer ring b105 is sandwiched between the outer ring a104 and the inner ring b206, and the third side wall 203c and the fourth side wall are arranged along the side surface of the outer ring 101. 204c is formed in the inner ring 200 and completed. Here, Au is used as the material of the outer ring a104 at the outermost periphery, Ag is used as the material of the outer ring b105 of the second layer, Ti is used as the material of the inner ring a205 at the innermost periphery, and the inner ring b206 is used. The ring 100c is formed using Pt as the material of the material. As a result, it is possible to provide a ring that is rich in changes depending on the colors of the three colors, to further reduce the cost, and to provide a skin-friendly ring.

  The method of manufacturing a ring laminated in a three-layer structure or more is almost the same as the method described in the section of the first embodiment. However, if the material folding process is an outer ring instead of the inner ring, Since it is good, detailed description is omitted.

Next, a third embodiment of the present invention will be described with reference to the drawings. FIG. 9 is a view showing a method of rolling the outer ring according to the outer shape of the inner ring according to the outer shape of the inner ring, and FIG. 9A shows the outer ring as described in the process of the first embodiment. Sectional drawing which shows the state completed to the formation process of the 1st side wall 1002 and the 2nd side wall 1003 of 1001, (b) is a schematic process side view of a rolling process, (c) was seen from the front side of the rolling process. Process sectional drawing, (d) is process sectional drawing which shows the state which complete | finished the transfer process. In the figure, the cross-sectional shape of the inner ring 2000 has a shape having a recess 2002 at the center of the outer peripheral surface 2001, and the inner peripheral surface of the outer peripheral portion 1004 of the outer ring 1001 and the outer peripheral surface 2001 of the inner ring 2000. A gap 2005 is formed between the recesses 2002.

Therefore, as shown in FIGS. (B) and (c), the outer peripheral portion 1004 of the outer ring 1001 is formed so as to have the same shape as the outer peripheral surface 2001 of the inner ring 2000 using the rolling die 3000. . That is, a convex shape 3001 having substantially the same shape as the outer peripheral surface 2001 of the inner ring 2000 is formed on the rolling die 3000, and while applying pressure as shown by an arrow 3002 (FIG. (C)) to the rolling die 3000 (b ) By rotating the rolling die 3000 and the ring 1000 in the directions of arrows 3003 and 3004 as shown in the figure, a concave shape 1005 is formed on the outer peripheral part 1004 of the outer ring 1001 as shown in FIG. The ring 1000 is completed by molding.

Next, a fourth embodiment of the present invention will be described with reference to the drawings. FIG. 10 shows a cross-sectional view of the ring in the brazing process when brazing material is poured between the outer ring and the inner ring to ensure the fixation of the outer ring and the inner ring. In the method of the present invention, a brazing step is generally unnecessary, but a small amount of brazing material may be poured in order to secure the fixing of the outer ring and the inner ring. At this time, the post-process operation can be simplified by forming a brazing material flow stop so that even a slight amount of brazing material does not flow out to the outer shape side.

FIG. 10A shows a finger ring 1000a formed by forming a brazing material flow stop portion 2011 on the inner ring 2010 in a square cross section. A general material is used as the brazing material. For example, when Pt is used as the material of the outer ring 1010 and Au is used as the material of the inner ring 2010, (what is the brazing material) is used. As a process, after both side walls are formed on the outer ring 1010, a brazing material is poured between the outer ring 1010 and the inner ring 2010. Since the amount of pouring of the brazing material is not so large, the amount of the brazing material flowing out is not large. Therefore, although not shown in the drawing, the end of the outer ring 1010 can be bent toward the flow stop portion 2011 to make the brazing material invisible.

FIG. 10B shows a ring 1000b formed by forming a brazing material flow stop portion 1021 on the outer ring 1020 so as to have a square cross section. Such formation is possible when the outer ring 1020 has a certain thickness. Of course, finally, the end of the outer ring 1020 can be bent toward the flow stop portion 1021 so that the brazing material can be made invisible.

FIG. 10C is a cross-sectional view when the outer ring is formed of two layers, and the brazing material flow stop portion 1032 is cross-sectioned to the outer ring 1031 portion of the second layer (that is, the inner side of the outer ring). The ring 1000c is produced by forming it into a quadrangular shape. This can be formed by slightly shortening the width direction length of the second layer outer ring 1031. Also in this case, finally, the flow stop portion 1032 can be covered by bending the end portion of the first-layer outer ring 1030 inward to make the brazing material invisible.

FIG. 10D is a diagram in which the shape of the flow stop portion of the brazing material is a triangle. That is, a slope 1041 is formed on the inner end face of the outer ring 1040, and a slope 2041 is formed on the outer end of the inner ring 2040, thereby forming a ring 1000d as a brazing material flow stop 1042. is there.

  In the present invention, a ring is formed by an outer ring and an inner ring made of different materials. At this time, the outer ring and the inner ring are not limited to a single layer, and may be formed with any number of layers. Also, the outer ring and the inner ring are not limited to simple shapes, but may have various complicated shapes. You may have. The material of the finger ring is not limited to the above embodiment, and platinum alloy, gold alloy, titanium alloy, silver alloy, palladium or the like can be used for the outer ring or the inner ring, respectively. In short, it is included in the scope of the present invention without departing from the gist thereof.

It is sectional drawing of each process which shows the manufacturing method of the ring by 1st Example of this invention, (a)-(c) shows a 1st process. It is sectional drawing of each process which shows the manufacturing method of the ring by 1st Example of this invention, (d) to (e) shows the 2nd process, (f) to (g) shows the 3rd process. It is an example of the ring which has the shape where the outer periphery was flat completed through the process of this invention. Sectional drawing of the ring by 1st Example of this invention formed by laminating | stacking material on three or more layers is shown, (a) is an outer ring 2 layer structure, (b) is an inner ring 2 layer structure, (c ) Is a ring having a structure in which two layers each of an outer ring and an inner ring are laminated. It is process sectional drawing which shows the manufacturing method of the ring by 2nd Example of this invention, (a)-(c) shows a 5th process. It is process sectional drawing which shows the manufacturing method of the ring by 2nd Example of this invention, (d) is a 6th process, (e)-(f) is a 7th process. It is an example of the ring which has the shape where the outer periphery is flat completed through the process by 2nd Example of this invention. Sectional drawing of the ring by 2nd Example of this invention formed by laminating | stacking material on three or more layers is shown, (a) is an inner ring 2 layer structure, (b) is an outer ring 2 layer structure, (c ) Is a ring having a structure in which two inner rings and two outer rings are laminated. It is process drawing which shows the process of 3rd Example of this invention and shows the ring which made the outer periphery of the inner side ring irregular shape. 10 (a), (b), (c), and (d) are cross-sectional shapes of the ring showing the flow stop shape of the brazing material. FIG. 4 shows a ring shape showing an example of the prior art, in which (a) is a side view of the ring, (b) is an example of a cross-section of a ring having a flat outer shape, and (c) is a cross-section of a ring having an arc-shaped outer shape. Another example is shown.

Explanation of symbols

1, 1a, 1b, 1c, 1d, 100, 100a, 100b, 100c, 1000, 1000a, 1000b, 1000c, 1000d Ring 3, 300 First drawing punch 4,400 First drawing die 5,500 Second drawing punch 6 , 600 Second aperture die 10, 15, 16, 17, 18, 101, 104, 105, 1001, 1010, 1020, 1030, 1031, 1040 Outer ring 13, 1002 First side wall 14, 1003 Second side wall 20, 21 22, 23, 24, 200, 205, 206, 2000, 2010, 2020, 2030, 2040 Inner ring 31, 301 Abutting part 33, 303 Side wall forming part 42, 62, 402, 501 Side wall forming surface 203 Third side wall 204 4th side wall 3000 Rolling dies 2011, 1021, 1 32,1042 flow stop portion

Claims (13)

In the method of manufacturing a ring that forms a ring by combining an outer ring and an inner ring formed in a ring shape,
A first step of forming a first side wall by forming one end side in the width direction of the outer ring into a predetermined shape along the outer periphery of one end side of the inner ring, and the first step of the outer ring thus formed. A second step of engaging the outer periphery of one end side of the inner ring with the inner diameter of the side wall, and by forming the other end in the width direction of the outer ring into a predetermined shape along the outer periphery of the other end of the inner ring. And a third step of forming the second side wall. The ring manufacturing method according to claim 1, wherein at least one of the outer ring and the inner ring has a multilayer structure. The ring manufacturing method according to claim 2, wherein the outer ring has a structure in which flat plates are laminated in a ring shape. 4. The method according to claim 1, wherein the first step forms the first side wall of the outer ring using a die having a predetermined shape and a punch having a predetermined shape. 5. The manufacturing method of the ring of description. 5. The method according to claim 1, wherein in the third step, the second side wall of the outer ring is formed using a die having a predetermined shape and a punch having a predetermined shape. The manufacturing method of the ring of description. The method for manufacturing a ring according to any one of claims 1 to 5, further comprising a fourth step of deforming the outer ring according to an outer peripheral surface of the inner ring after the third step. . In the method of manufacturing a ring that forms a ring by combining an outer ring and an inner ring formed in a ring shape,
A fifth step of forming a third side wall by molding one end side in the width direction of the inner ring into a predetermined shape along the outer periphery of one end side of the outer ring, and the third step of the molded inner ring. A sixth step of engaging the outer periphery of one end side of the outer ring with the inner diameter of the side wall, and forming the other end in the width direction of the inner ring into a predetermined shape along the outer periphery of the other end side of the outer ring. And a seventh step of forming a fourth side wall by the method of manufacturing a finger ring. The ring manufacturing method according to claim 7, wherein at least one of the outer ring and the inner ring has a multilayer structure. 9. The method of manufacturing a ring according to claim 8, wherein the inner ring has a structure in which flat plates are laminated in a multilayer shape and formed into a ring shape. The said 5th process forms the said 3rd side wall of the said inner side ring using the die | dye which has a predetermined shape, and the punch which has a predetermined shape, The any one of Claim 7 to 9 characterized by the above-mentioned. The manufacturing method of the ring of description. The said 6th process forms the said 4th side wall of the said inner side ring using the die | dye which has a predetermined shape, and the punch which has a predetermined shape, The any one of Claims 7-10 characterized by the above-mentioned. The manufacturing method of the ring of description. The ring production according to any one of claims 7 to 11, further comprising an eighth step of deforming the inner ring according to an inner peripheral surface of the outer ring after the sixth step. Method. The method for manufacturing a ring according to any one of claims 1 to 12, wherein a brazing material flow stop portion is provided at an end portion matching portion between the outer ring and the inner ring.

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