JP3852768B2 - Japanese bell production method - Google Patents

Description

[0001]
[Technical field to which the invention belongs]
The present invention relates to a method for producing an 18-gold gold bell, which is relatively simple to manufacture, low in cost, low in price, can be reduced in weight without detracting from timbre, and has no variation in quality.
[0002]
[Prior art]
A bell is a bell shaped like a metal wine glass, placed on a pillow for the bell, and struck to strike. The sound of the timbre has a unique one, and it is characterized by a tone that resonates and has a long tail. The material of the bell is generally made of brass, but there is 18 gold as a luxury product. The conventional 18-gold bell bell manufacturing method will be described below with reference to FIGS. 6, 7, 8, and 9. FIG.
[0003]
18 gold bullion is used as the material. First, the disk-shaped plate 21 is created (see FIG. 6). As the disk-shaped plate 21, a plate having a thickness of approximately 2 mm or more is used. The reason why the thick material is used is that the bell made of a thick plate resonates and resonates, so it makes a long-tailed tone with the chain, but the bell made of a thin plate does not sound at all, so it is called a chain. The bell does not sound, it just hits the bang. The disk-shaped plate 21 is hit with a hammer, the center is thinned and the outside is thickened, and the disk-shaped concave plate 22 is formed (see FIG. 7). Next, the disk-shaped concave plate 22 is struck with a hammer and deformed into a shape similar to a wine glass, thereby forming a bowl-shaped body 23 (see FIG. 8). When the disk-shaped concave plate 22 is deformed into the bowl-shaped body 23, the thickness of each part increases. This is because when the thick plate is bent, enlargement of the inner thickness becomes remarkable. Next, in order to remove the corners of the bowl-like body 23 and adjust the overall shape, the whole is subjected to a shaving process to complete the bowl bell 24 (see FIG. 9). The completed bells 24 have the same external dimensions such as height and maximum diameter as the bowls 23, but the thickness is reduced from the bowls 23 by the amount of shaving. The shape of the bells 24 after shaving is the thinnest at the center and the thickness is thinner than the thickness of the disk-shaped plate 21, and the thickness from the side surface to the edge portion is larger than the thickness of the disk-shaped plate 21. From the side surface of the carton bell 24 to the edge part, it has a thickness of about 5 mm or more. This is an indispensable shape so that the bells 24 can resonate with a good tone, and the U-shaped cross-sectional structure with a thick side surface acts like a tuning fork to produce unique sounds of the bells. It is.
[0004]
Specific examples of the conventional bell bell manufacturing method will be described with numerical values. First, a disk-shaped plate 21 having a thickness of 5.0 mm and 18 gold is prepared. The disk-shaped plate 21 has a diameter of 150 mm and a weight of 700 g. Next, the disk-shaped plate 21 is hit with a hammer, the center is thinned and the outside is thickened, and the disk-shaped concave plate 22 is formed. At this time, the disc-like concave plate 22 having a diameter of 150 mm has a central thickness reduced to 0.7 mm and an edge portion thickness increased to 5.0 mm. Next, the disk-shaped concave plate 22 is hit with a hammer, and the plate-shaped object is deformed into a wine glass with no legs to form a bowl-shaped body 23. At this point, the highest part is 48 mm, and the widest part is 90 mm, and the thickness is increased by bending. The bottom becomes a center of 2.0 mm, and the raised edge is 6.0 mm. become. Next, in order to take the corner at the mouth of the bowl-like body 23 and adjust the overall shape, the entire body is shaved. The completed bells 24 are 48 mm at the highest and 90 mm at the widest, and the outer size is the same as that of the bowl 23, but the thickness is 1.2 mm at the center and the edge is 5. It has changed to 0 mm. Since 300 g is reduced by shaving, the completed bell 24 has a weight of 400 g.
[0005]
[Problems to be solved by the invention]
The conventional 18-gold bell bell manufacturing method has the following four problems. First, manufacturing is not easy. It is an operation that requires a lot of labor and time to strike the disk-shaped plate 21 to make the edge thicker and the center thinner. Next, it takes considerable labor and time to form the bowl-shaped body 23 by striking and deforming the disk-shaped concave plate 22 having thick and thin portions depending on the location. Furthermore, as a final finish, in order to adjust the shape of the bowl-shaped body 23, an unnecessary part must be completely cut off from almost the entire bowl-shaped body 23, and this is also an operation that requires considerable labor and time. Second, the cost is high. A large amount of 18 gold is required to produce a single bell. As a result, 18-gold bells are expensive and generally not widely used. Third, it is heavy. If you try to reduce the weight and make a large amount of thinning, the sound will not be heard. Resonance does not occur and it just sounds like a “bang” as if it were just hitting a metal plate. This would be a substitute for a bell, so there was a limit to reducing the weight of a traditional bell. Fourth, it is difficult to maintain uniform quality. Since operations involving thickness changes are included in all the processes, each one is slightly different from the overall balance, and variations among products are likely to occur. In fact, when we struck several bells made with the same manufacturing method, the tone was often slightly different.
[0006]
An object of this invention is to provide the bell bell manufacturing method which can solve all the above-mentioned problems.
[0007]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the present invention uses an 18-gold bullion as a material in the manufacture of a bell, and a thickness of 0.63 mm or more and 0.8 mm or less is a material for constituting the main body of the bell. Disc-shaped plate and material for the mouth part of a bell, which is 6.8 times to 9.5 times the thickness of the disc-shaped plate and 4.2 times to 6.6 times the thickness of the disc-shaped plate A ring-shaped plate having a thickness is created, and the disc-shaped plate is struck with a hammer, the center is bent downward, the side is curved and the edge portion is deformed so that the edge portion faces upward. Forming a bowl-shaped main body that constitutes the main body part, jointing the edge part of the upper end of the bowl-shaped main body and the lower outer side of the ring-shaped plate over the entire circumference, and then cornering the ring-shaped plate integrated with the bowl-shaped main body. A bell that is finished by shaving to smooth the surface The present invention relates to granulation method.
[0008]
According to the above invention, first, the manufacturing is very simple. This is because there is no work to change the thickness in the whole process, and this requires less labor for manufacturing, and the work time can be shortened accordingly. Second, the manufacturing cost is low and the price can be sold cheaply. The amount of 18 gold required to produce a single bell at the material stage is about one third of the conventional amount. Thirdly, the weight can be reduced without detracting from the timbre. Although it is thin and cannot emit sound only with the main body part, it has a structure that can resonate with the same action as a tuning fork by having a thick mouth part on the main body part, A sounding sound can be produced. Comparing the weight of the completed carton, it is about half that of the conventional one. Fourth, quality variations can be eliminated. This is because the process of changing the thickness that causes subtle individual differences is not included in the operation of tapping and deforming. For example, when a disk-shaped plate is processed into a bowl-shaped main body, the disk-shaped plate is thin, so that it does not cause an increase in thickness, and it is not necessary to cut the main body portion during the cutting operation. In the present invention, “the center is curved downward and the side surface is curved and the edge portion is deformed so that the edge portion faces upward” means that a disc-shaped plate that is flat is shaped like a round wine glass. This means that it is processed into a bowl-shaped body. In order to achieve the above, if the thickness of the disk-shaped plate is thicker than the above-mentioned dimensions, the thickness is greatly increased when processing into a bowl-shaped body, and if it is thin, the strength is insufficient. And the optimal conditions of the width | variety and thickness of a ring-shaped board were able to be obtained from the relationship with the thickness of a disk shaped board. If the width of the ring-shaped plate is longer than the above-mentioned dimensions, the appearance as a bell will be lost, and if it is short, the resonance effect of the tuning fork will be lost and the unique sound of the bell will not be produced. Further, if the thickness of the ring-shaped plate is thicker than the above-mentioned dimensions, the corresponding 18 gold is wasteful in cost and weight, and if it is thin, the resonance effect of the tuning fork is lost and the unique sound of the bell is not emitted. In addition, the diameter of a disk-shaped board is adjusted according to the magnitude | size and shape of the bell which is manufactured, respectively.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the bell bell manufacturing method according to the present invention will be described with reference to FIGS. 1, 2, 3, 4, and 5, but the present invention is limited only to the following embodiments. It goes without saying that it is not something that should be done.
[0010]
The material is 18 gold. In this embodiment, it is 18 gold in the ratio of gold 18: silver 4.8: copper 1.2. First, the disk-shaped plate 2 and the ring-shaped plate 4 are created. The total weight of 18 gold combined with the disk-shaped plate 2 and the ring-shaped plate 4 is 250 g. The disc-like plate 2 is a material for constituting the main body portion 1 of the completed bell bell 6, and has a diameter of 150 mm and a thickness within a range of 0.63 mm to 0.8 mm, and is 0 in this embodiment. 0.7 mm. The ring-shaped plate 4 is a material for constituting the mouth portion 3 of the completed bell bell 6 at the time of completion. The outer diameter is 86.0 mm, the inner diameter is 76.0 mm, and the width (the width of the ring band) is the disk-shaped plate 2. In the present embodiment, within the range of 6.8 times to 9.5 times the thickness, the thickness is about 7.1 times 5.0 mm, and the thickness is 4.2 times to 6.6 times the thickness of the disk 2. Within this range, the present embodiment is approximately 4.3 times 3.0 mm. Next, the disk-like plate 2 is struck with a hammer (not shown), the center is curved and protruded downward to form the bottom, the peripheral part is raised up side by side, the side is formed, and the edge part is directed upward. Process it. Thus, the bowl-shaped body 5 having a shape similar to a rounded wine glass is formed. The outer diameter of the ring-shaped plate 4 and the outer diameter of the edge portion of the bowl-shaped main body 5 are adjusted in advance so as to match the outer diameter of the mouth portion 3 of the bell 6 at the time of completion. The dimensions of the bowl-shaped body 5 are a maximum diameter of 90.0 mm, an outer diameter of the edge portion of 86.0 mm, a height of 45.0 mm, a thickness of 0.7 mm at the center bottom, and an edge portion of 0.7 mm. . Next, the edge part of the upper end of the bowl-shaped main body 5 and the lower outer side of the annular plate 4 are attached together over the entire circumference. Since both sides are heated and attached together, the bowl-shaped main body 5 and the ring-shaped plate 4 are completely integrated. After the co-attachment, the ring-shaped plate 4 integrated with the bowl-shaped main body 5 is subjected to a cutting process for removing the corners and smoothing the surface. The bells 6 are thus completed. The size of the bell 6 is 90.0 mm for the maximum diameter, 86.0 mm for the outer diameter of the mouth portion 3, 48.0 mm for the height, and 0.7 mm for the thickness at the center of the body portion 1. The side is also 0.7 mm. The whole part is rounded, and the upper part has a shape that warps somewhat inward to improve the tone.
[0011]
There are several types of bells, and the bells 6 described in the above embodiment have a typical maximum diameter of 3 inches, that is, 90.0 mm. Other than this, for example, a bell with a maximum diameter of 2 inches and 5 minutes, that is, 75.0 mm (a thickness of the disc-like plate 2 is suitably about 0.63 mm), or a bell with 3 inches and 5 minutes, that is, 105.0 mm. (The thickness of the disk-shaped plate 2 is suitably about 0.8 mm). The present invention can manufacture the above-described bell bells and other various bell sizes while solving the conventional problems. In addition, the diameter of the disk-shaped board 2 is each adjusted according to the magnitude | size and shape of the bell which is manufactured.
[0012]
【The invention's effect】
According to the above invention, firstly, the manufacturing is very simple, and the labor required for the manufacturing can be reduced, and the working time can be shortened accordingly. Secondly, the manufacturing cost is low and it can be provided at a low price. The major factor is a reduction in material costs, and the 18 gold required at the material stage can be reduced to about one third of the conventional cost. Thirdly, it is possible to reduce the weight while securing a unique tone and sounding tone. Compared to a conventional bell, it is about half the weight. Fourth, uniform quality bells can be easily manufactured. By repeating the same manufacturing process, a bell with the same tone can be easily manufactured.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing a disk-like plate according to the present invention.
FIG. 2 is a longitudinal sectional view showing a ring-shaped plate according to the present invention.
FIG. 3 is a longitudinal sectional view showing a bowl-shaped main body according to the present invention.
FIG. 4 is a longitudinal sectional view showing a bowl-shaped main body and a ring-shaped plate in a co-attaching process according to the present invention.
FIG. 5 is a longitudinal sectional view showing a bell in relation to the present invention.
FIG. 6 is a longitudinal sectional view showing a disk-shaped plate related to a conventional example.
FIG. 7 is a longitudinal sectional view showing a disk-shaped concave plate relating to a conventional example.
FIG. 8 is a longitudinal sectional view showing a bowl-shaped body related to a conventional example.
FIG. 9 is a vertical cross-sectional view showing a bell, relating to a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Main body part 2 Disc-shaped board 3 Mouth part 4 Ring-shaped board 5 Bowl-shaped main body

Claims (1)

In the manufacture of a bell, a disc-shaped plate (2) having a thickness of 0.63 mm or more and 0.8 mm or less, which is a material for forming a main body portion (1) of the bell, using 18 gold bullion. , A material for forming the mouth portion (3) of the bell, which is 6.8 times to 9.5 times the thickness of the disc-like plate (2) and 4.2 times to 6.6 times the thickness A ring-shaped plate (4) having a thickness of 2 mm is created, and the disk-shaped plate (2) is struck with a hammer so that the center is curved downward and the side is raised in a curved shape so that the edge portion faces upward. By processing, the bowl-shaped main body (5) constituting the main body part (1) of the bell-bell is formed, and the edge portion of the upper end of the bowl-shaped main body (5) and the lower outer side of the ring-shaped plate (4) are entirely surrounded. And then smoothing the surface by removing corners from the ring-shaped plate (4) integrated with the bowl-shaped body (5) Hotokesuzu production process, characterized in that it is completed by applying.

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