JPS61229431A - Machining method for metal - Google Patents

Abstract

PURPOSE:To produce the forming product having annular part without causing any scrap by producing annular body with bending that which is cut in the prescribed length from a metallic rod body and by pressing by a metal die after welding the joining part. CONSTITUTION:A metallic rod body 1 is cut in the prescribed size, made in annular shape with its bending and the first work 3 is made with welding of the joining part thereof. The first work 3 is then charged between backing metal die 4 and movable metal die 5. The annular formed product 6 is then obtd. with its pressing by the movable metal die 5 and backing metal die 4.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for processing metal press products, particularly articles having an annular portion.

[Conventional technology]

The conventional method of processing metal formed into an annular shape is shown in Figures 8 to 12.
To explain based on the figure, the processed product has a ring shape as shown in Fig. 12, and this product (A) not only has a ring shape, but also has a thinner wall on one side of the inner edge (B) through a step. ,
On the other side, a narrow circumferential protrusion (c), which can be seen in FIG. 11, is formed.

In this product, as shown in FIG. 8, a ring (E) as shown in FIG. 9 is punched out from a thick metal plate (D). (F) is the hole punched out of the ring (E), and (G) is the hole punched from the ring (E).
This is the scrap from the center of the.

The punched ring (E) is placed on a receiving die (H) as shown in FIG. 10, and pressed with a movable die (S).

The press surface of the movable mold (S) is equipped with a stepped protrusion (N) for forming the thinner inner edge (B) of the finished product (A), and the receiving mold (H) is equipped with a peripheral protrusion (H). ), and (o) and (wa) are mold parts for finishing the inner and outer diameters of the finished product (a). FIG. 11 shows the finished product (A) at the final stage of pressing.

[Problem that the invention seeks to solve]

Since the conventional metal processing method described above involves punching from a raw metal plate, some percentage of the punching waste is generated.

[Means for solving problems]

In order to solve the above-mentioned problems, this invention uses a metal rod as the material, curves the metal rod into an annular shape, welds the joint, and press-forms it with a mold. This is a method for processing metal.

[Effect]

An annular part or annular body is made by bending a raw metal rod, and the joined part is welded and then loaded between press dies and pressed to obtain a finished product or an annular body having an annular part at once.

〔Example〕

Fig. 1 shows a metal rod which is a raw material for obtaining a processed metal product of the present invention, and Fig. 2 shows a product of the first processing step of the processed metal product, in which the metal rod 1 is cut into a predetermined length. It is cut, curved into an annular shape, and the joint 2 is welded to obtain a first processing product.

FIG. 3 shows a receiving die 4 and a movable die 5 having the same shape as in FIG. 10, and the first processing product 3 is loaded between the two dies and pressed.

FIG. 4 shows the final stage of pressing, and a ring-formed product 6 shown in FIG. 5 (the same product as shown in FIG. 12) is obtained by pressing.

6 and 7 show another embodiment of the present invention. This embodiment is a processing method for obtaining a bottle opener.
The first processing product 3a shown in FIG. 6 is cut to a total length of the extended length of the annular portion 7 and the length of the handle 8, and the joint 9 between the annular portion 7 and the handle 8 is welded. 10 is a part where the free end of the annular part 7 is partially attached to the base side of the annular part, and this part 1
In the finished bottle opener 11 shown in FIG.

[Effect] This invention involves cutting a raw metal rod to a predetermined length, bending a part or the whole of it to create an annular part or an annular body, welding the joint, and press-forming with a predetermined mold. in,
It is possible to obtain a product or an annular body having an annular portion, and it has the effect of not producing any punching waste, which is seen in the conventional processing method of punching out a material for the desired product from a raw metal plate.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of an example of the material used in the method of the present invention, Fig. 2 is a perspective view of an example of the material obtained from the same material in the first processing step, Fig. 3 and Fig. 4 are the same material as above. 5 is a cross-sectional view showing the press working process, and FIG. 5 is a perspective view of the obtained processed product.
FIG. 6 is a front view of the raw material obtained in the first processing step of another example, FIG. 7 is a front view of the same processed product, and FIG.
The figure is a perspective view of a raw metal plate punched from the raw material obtained in the first processing step in Figure 9 in a conventional metal processing method.
0 and 11 are cross-sectional views showing the second processing step of the blanked material, and FIG. 12 is a perspective view of the obtained product. DESCRIPTION OF SYMBOLS 1... Metal rod, 3.3a... First processing process product, 2... Joint part, 4... Receiver mold, 5... ...Movable mold, 6...Processed product, 7...Annular part, 8...Handle part, S...
...Joint part, 11...Bottle opener. Patent applicant Token Co., Ltd. Agent Kama 1) Text 2 Figure 3 Figure 4

Claims (1)

[Claims] 1. A method for processing metal, wherein the material is a metal rod, and the portion to be formed into an annular shape is formed by curving the metal rod into an annular shape, welding the joints, and press-forming this with a mold.