CN112775445B

CN112775445B - Method for manufacturing decorative ring

Info

Publication number: CN112775445B
Application number: CN202011013119.4A
Authority: CN
Inventors: 千代荣治
Original assignee: Wuxi Golden Rattan Jewelry Co ltd
Current assignee: Wuxi Golden Rattan Jewelry Co ltd
Priority date: 2019-11-01
Filing date: 2020-09-24
Publication date: 2023-02-10
Anticipated expiration: 2040-09-24
Also published as: CN112775445A

Abstract

The invention aims to provide a ring manufacturing method. Unlike the ring manufacturing method by lost wax casting, the ring manufacturing method improves the inner ring surface processing technology of forged rings which has not been regarded as important so far, does not destroy the shape considering the touch feeling of fingers, reduces the weight of the rings while maintaining the high hardness of the forged rings, improves the wearing feeling of users, gives the design feeling to the shape of the inner ring surface, and is low in manufacturing cost.

Description

Method for manufacturing decorative ring

Technical Field

The invention belongs to the field of decorative ring manufacturing, and particularly relates to a method for processing an inner ring surface of a ring manufactured by forging.

Background

In addition to manufacturing by lost wax (casting), there is a manufacturing method of a ring by forging, that is, a manufacturing method of cutting the outer ring surface of a ring after the raw material is hammered and rolled. Since a ring made of a lost wax is manufactured by injecting a raw material into a mold, the ring can be designed to some extent freely. However, in the ring manufactured by forging, particularly, cutting of the inner ring surface requires a cutting tool to enter the inner ring surface and to be brought into contact therewith for machining, and the blade of the cutting tool cannot reach the cutting portion of the inner ring surface, which is difficult to design freely compared with cutting of the outer ring surface.

Further, in order to make the contact between the finger of the ring wearer and the ring more comfortable, although the processing of the inner ring surface of the ring has been studied (for example, a ring in which a plurality of curved portions are formed on the inner ring surface as described in patent document 1, and a ring in which the inner diameter of the ring is enlarged and a bulging surface is formed on the inner surface as described in patent document 2) by a rolling machine, there is a technical limit in cutting the inner ring surface by forging as described above. In patent document 1, the curved portion is formed only in the radial direction of the ring inner ring surface, and is not formed by cutting the ring by forging, nor is patent document 2 a method for manufacturing the ring inner ring surface by cutting. In view of finger contact, the finger contact is often made well by forming the inner surface portion into a flat plate shape or by forming the inner surface portion into an arc shape (a shape in which the surface is gently curved in a convex shape in the radial direction).

On the other hand, since forged rings have high hardness and strength and have properties that the surface is not easily damaged and deformed, the demand for wedding rings is particularly high, and they are also suitable for this purpose in the symbolic sense of "never go bad". Therefore, in order to reduce the cost by controlling the amount of expensive raw materials (such as gold and platinum alloys) required for ring production and to further increase the demand, it is necessary to reduce the weight of a ring formed by forging.

In this regard, the inner ring surface processing of the forged ring is performed by attaching the ring to a cutter, pressing a cutter against the ring, or molding the ring by a calender. However, as described above, since a cutting tool of a standard specification cannot reach a cutting portion of the ring inner ring surface or cutting in the ring direction has technical restrictions, and purchasing and development costs of a new cutting tool are required, processing of the ring inner ring surface by forging is limited to an arc shape or a flat plate shape, and when processing of the ring inner ring surface is required, processing of a ring manufactured by lost wax is mainly performed.

Patent document 1: dodge 3096467

Patent document 2: japanese unexamined patent publication No. 2004-305508

Disclosure of Invention

The technical problem to be solved by the invention is as follows: by improving the technology of processing the inner ring surface of the ring by forging which has not been regarded as important so far, the weight of the ring is reduced while maintaining the high hardness of the ring by forging without damaging the shape considering the touch feeling of the finger, the wearing feeling of a user is improved, the shape of the inner ring surface is designed, and the manufacturing cost is reduced.

In order to solve the above technical problems, the manufacturing method of the present invention is as follows: in a ring manufacturing process by forging, a ring is mounted on a cutting machine such as a CNC automatic lathe, a turning tool capable of cutting an inner ring surface is mounted on the cutting machine, and the inner ring surface of the ring is cut in a ring direction, and a concave portion or a groove portion is formed at one or more positions of the inner ring surface regardless of the shape of the outer ring surface of the ring.

The ring has a recessed portion or a groove portion of an arbitrary shape, area, depth, and can be easily formed in the inner ring surface by the ring inner ring surface cutting method of the present invention, and the weight of the material corresponding to the volume of the recessed portion is reduced while maintaining the hardness, so that the ring can be worn more easily by a user than before, and the ring manufacturing cost by forging is reduced for a manufacturer.

In addition, by using the method for cutting the inner ring surface of the ring based on forging, accurate, rapid and high-precision cutting is carried out when one or more concave parts or groove parts are formed, and the contact part of the inner ring surface and the finger of the user is formed into a gentle curved surface shape, so that the contact feeling of the finger is not influenced for the user.

In addition, according to the method for cutting an inner ring surface of a ring by forging of the present invention, one or more recesses or grooves are formed in the ring inner ring surface in the ring direction regardless of the ring outer ring surface shape, and for example, a recess is formed only in the ring inner ring surface, or for example, a recess which is identical to and symmetrical to the recess of the ring outer ring surface is formed, and an appearance in which a plurality of rings are overlapped on top of each other is formed, so that a ring manufactured by forging can be provided with a free design which has been possible only in a ring manufactured by a lost wax process.

Drawings

Fig. 1 is an elevation view showing an example 1 of a forging-based ring machined according to the method of manufacture of the present invention.

Fig. 2 is a right side elevational view of the ring of fig. 1.

Fig. 3 is a cross-sectional view taken along line A-A' of the ring of fig. 1.

Fig. 4 is an oblique view of the ring of fig. 1.

Fig. 5 is an elevation view showing example 2 of a forging-based ring machined according to the method of manufacture of the present invention.

Fig. 6 is a right side elevational view of the ring of fig. 5.

FIGURE 7 is a cross-sectional view taken along line B-B' of the ring of FIGURE 5.

Fig. 8 is an oblique view of the ring of fig. 5.

Fig. 9 is an elevation view showing example 3 of a forging-based ring machined according to the method of manufacture of the present invention.

Fig. 10 is a right side elevational view of the ring of fig. 9.

Fig. 11 is a cross-sectional view of the ring of fig. 9 taken along line C-C'.

Fig. 12 is an oblique view of the ring of fig. 9.

1A decorative ring, 1B decorative ring, 1C decorative ring, 2 outer ring surface (arc shape), 3 side surface, 4 side surface of inner ring surface bulging surface, 5 inner ring surface concave or groove portion, 6 inner ring surface bulging surface (arc shape).

Detailed Description

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Fig. 1 is a front view showing an embodiment 1 of a forged ring 1A processed by the manufacturing method of the present invention.

In example 1, after cutting the outer ring surface of the ring 1A on a lathe capable of forming an arc shape in the outer ring surface direction, the ring is mounted on a cutting machine capable of cutting an inner ring surface, such as a CNC automatic lathe, and a cutting tool of the cutting machine is brought into contact with the inner ring surface, and by cutting the inner ring surface in the ring direction, a recessed portion 5 is formed at 1 position on the inner ring surface, and a protruding portion 6 is formed at 2 positions in the inner ring surface direction of the recessed portion 5. As a result, as shown in fig. 1, the side surface 4 and the side surface 3 of the bulging surface of the inner ring surface and the circular arc-shaped portion 2 of the outer ring surface look like a 4-heavy circular ring. When the cutting machine cannot reach the inner ring surface cutting portion, a turning tool smaller than a standard turning tool is attached to the cutting machine to perform cutting.

Fig. 2 is a right side view of the ring 1A of fig. 1, the outer annular surface 2 being cut in the shape of a circular arc. Fig. 3 is a cross-sectional view of the ring 1A of fig. 1 taken along the line joining a, a' to see the ring 1A in cross-section at the upper and lower portions of the ring. As described above, the recess 5 is formed at 1 point on the inner annular surface of each of the upper and lower portions, and the weight of the material corresponding to the volume of the recess 5 to be cut is reduced. The two bulging surfaces 6 formed from the concave portion 5 in the inner circumferential direction are portions to be brought into contact with the fingers of the user, but the curved surface shape thereof is gentle, so that the fingers do not feel uncomfortable.

Fig. 4 is an oblique view of the ring 1A of fig. 1, with portions of the inner annular surface of the ring visible. As described above, by forming the concave portion 5, a design constituted by the side surface 4 of the bulging surface, the bulging surface 6, and a slightly larger groove formed by the concave portion 5 is exhibited on the inner ring surface.

Figure 5 is a front elevation view showing example 2 of a forging-based ring 1B formed by the method of manufacture of the present invention.

In example 2, after the outer ring surface of the ring 1B is cut on a lathe capable of forming an arc shape in the outer ring surface direction, the ring is mounted on a cutting machine capable of cutting an inner ring surface, such as a CNC automatic lathe, a cutter of the cutting machine is brought into contact with the inner ring surface to cut the inner ring surface in the ring direction, and the groove portions 5 are formed 2 in the inner ring surface, and the bulging surface 6 is formed in an arc shape at 3 in the inner ring surface direction from each groove portion 5. As a result, as shown in fig. 5, the arc-shaped portions of the outer ring surface 2 and the inner ring surface 6 and the side surfaces 3 appear to be 4-fold circular rings. When the cutting machine cannot reach the inner ring surface cutting portion, a turning tool smaller than a standard turning tool is attached to the cutting machine to perform cutting.

Fig. 6 is a right side view of the ring 1B of fig. 5, the outer annular surface 2 being cut in a circular arc. Fig. 7 illustrates a cross-sectional view of the ring 1B of fig. 5 at the line joining B, B', enabling a cross-section of the upper and lower parts of the ring body of the ring 1B to be seen. As described above, the two grooves 5 are formed in the inner circumferential surfaces of the upper and lower portions, and the weight of the material corresponding to the cut volume of the grooves 5 is reduced. Further, since three bulging surfaces 6 in the direction of the inner circumferential surface, that is, two circular arcs are formed from the groove portion 5 as portions to be in contact with the user's fingers, the feeling of finger contact is not impaired.

Fig. 8 is an oblique view of the ring 1B of fig. 5, showing a portion of the inner annular surface of the ring. As described above, the 2-position groove portion 5 and the 3-position arc shape 6 formed by cutting the inner ring surface present a design aesthetic feeling of overlapping 3 circular rings in the vertical direction.

Figure 9 is a front elevation view showing example 3 of a forging-based ring 1C formed by the method of manufacture of the present invention.

In embodiment 3, after the cutting by the lathe capable of forming an arc shape in the outer ring surface direction is completed, the ring is mounted on a cutting machine capable of cutting an inner ring surface, such as a CNC automatic lathe, and the cutting machine is configured such that a cutter of the cutting machine is brought into contact with the inner ring surface to cut the inner ring surface in the ring direction, and a semi-concave shape is formed from each of the outer ring side surfaces on both left and right sides of the ring 1C toward the center portion in the inner ring surface direction. As a result, as shown in fig. 9, the two tangential surfaces 5 of the inner ring surface, the side surface 3, and the circular arc-shaped portion 2 of the outer ring surface appear to be 4-fold circular rings. When the cutting machine cannot reach the inner ring surface cutting portion, a turning tool smaller than a standard turning tool is attached to the cutting machine to perform cutting.

Fig. 10 is a right side elevational view of the ring of fig. 9, with the outer annular surface 2 cut in a circular arc. Fig. 11 shows a cross-section of the ring 1C of fig. 9 at the line connecting C, C', with sections of the upper and lower parts of the ring body of the ring 1C visible. As described above, the semi-concave portion 5 is formed at the 2-position on the inner ring surface from the two outer ring side surfaces toward the center of the inner ring surface direction, and the weight of the raw material corresponding to the cut capacity of the concave portion 5 is reduced. Further, the bulging surface 6 at the position 1 toward the center is a portion which is in contact with the user's finger, but the curved surface shape is gentle, so that the finger does not feel uncomfortable.

Fig. 12 is an oblique view of the ring 1C of fig. 9, showing a portion of the inner annular surface of the ring. As mentioned above, by forming 2 the half-recess 5, a design is presented in which a convex bulging surface 6 is formed centrally in the inner ring surface.

The recess or groove formed by the inner ring surface cutting according to the present invention is not limited to the above-described embodiment, and can be manufactured as long as the width of the ring and the size of the tool attached to the cutting machine according to the present invention are within limits, even if the shape, area, depth, and position thereof are different from those of the embodiment within the range in which the ring can be manufactured.

The shape of the outer ring surface is not limited to the above-described embodiment, and may be designed to be symmetrical to the inner ring surface, for example, or may be different from the present embodiment within a range where the shape can be manufactured.

Claims

1. A method for manufacturing a lightweight ring is characterized in that in a ring manufacturing process based on forging, the ring is mounted on a CNC automatic lathe, a CNC composite lathe and a multi-axis machining center cutting and processing machine; the cutting and processing machine can cut and process the inner ring surface of the ring; installing a turning tool capable of cutting and processing the inner ring surface of the ring on the cutting and processing machine, and cutting the inner ring surface of the ring along the ring direction; forming a recess at one or more locations in the ring inner annular surface; reducing the weight of the raw material corresponding to the capacity of the concave part; the cross section of the concave part is in a curved surface shape, and the shape of an inner ring surface formed by the concave part is smooth and has no edges and corners.

2. The method of manufacturing a light weight ring according to claim 1, wherein the cut inner ring surface of the ring is formed with a recess having an arbitrary shape, area, and depth.

3. A manufacturing method of a lightweight ring is characterized in that in a ring manufacturing process based on forging, the ring is installed on a CNC automatic lathe, a CNC composite lathe and a multi-axis machining center cutting and processing machine; the cutting and processing machine can cut and process the inner ring surface of the ring; installing a turning tool with the size smaller than that of a turning tool with standard specification on the cutting processing machine, and cutting the inner ring surface of the ring along the ring direction; forming a recess at one or more locations of the inner ring surface of the ring; reducing the weight of the raw material corresponding to the capacity of the concave part; the cross section of the concave part is in a curved surface shape, and the shape of an inner ring surface formed by the concave part is smooth and has no edges and corners.

4. The method of claim 3, wherein the ring has a cut inner ring surface with a recess of any shape, area and depth.