JPH0663676A - Manufacture of flange parts and metal ribon material used for the same - Google Patents

Abstract

PURPOSE:To provide a method being suitable to manufacture a parts whose boss is protruded from a part of a flange and a ribbon material. CONSTITUTION:By using a rolling roller 2 forming dimples 21 at the outer periphery, the ribbon material 01 is rolled and beforehand, the protruding parts 12 are formed on the ribbon material 1 at the time of rolling. Thereafter, by pressing the protruding part 12 at a product working stage, the parts whose boss is protruded from a part of the flange, is manufactured.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a part and a material used therefor, and more particularly to a method and a ribbon material suitable for manufacturing a part having a shape in which a boss projects from a part of a flange.

[0002]

2. Description of the Related Art Originally, a metal ribbon material as a processing material is generally supplied to a processor as a long material having a uniform thickness in which a uniform cross section is continuous in the length direction as viewed in the width direction. is there. However, as an exception, in order to use it for a special purpose, it is specified in the width direction x as shown in FIG. 5 and FIG.
In the example shown in Fig. 6, there is a thick portion on one side in the width direction, and in the example shown in Fig. 6, there is a thick portion at the center in the width direction.) There is also a long material whose cross section S is continuous in the length direction y. .

By the way, a part having a shape in which the boss B projects from a part of the flange F as shown in FIGS. 7 and 8 (this is called a flange part in this specification), for example, FIG.
When manufacturing the small and highly precise spring seat T shown in FIG. 8 and the part U integrally formed with a part thereof shown in FIG. 8 etc., the entire ribbon material is cut as long as the conventional ribbon material is used as the processing material. Alternatively, it is necessary to perform forging processing over the entire ribbon material and secure a volume portion necessary for the subsequent press processing and cutting processing in the portion where the boss B is formed.

[0004]

However, when the thickness of the flange F is extremely thin or the number of production is large, the former construction method is limited in efficiency due to poor yield and a large number of processing steps. There is. On the other hand, in the latter construction method, when the volume of the boss B is larger than the wall thickness of the flange F, a material much thicker than the thickness of the flange F of the finished product is forged over the whole material, and the material is pressed later. Therefore, a step of securing a volume of the boss forming portion is required, and the forming of the boss forming portion having a large volume for the forging pressure with respect to the ultra-thin flange is not always easy, and the energy required for the forging pressure becomes large, The use of a corresponding large forging machine is obligatory.

The present invention has been devised in view of the above-mentioned circumstances, and a ribbon member is provided with a component having a locally different cross-sectional shape with respect to another portion such as a flange component having a boss. A first object of the present invention is to provide a component manufacturing method that can be manufactured in large quantities by press working with a small working energy.

A second object of the present invention is to provide a metal ribbon material which is effective as a raw material for the production of the above parts.

[0007]

In order to achieve the above object, the present invention uses a metal ribbon material as a raw material, and locally bulges and forms a portion having a different cross-sectional shape with respect to another portion. In the method of manufacturing a component, in order to previously form a protrusion having a volume sufficient to form the portion by the press working on the ribbon material during the rolling process,
The ribbon material is rolled using a rolling roller having a dimple having a volume corresponding to the volume formed on the outer circumference.

Next, the present invention relates to a metal ribbon material used as a raw material for manufacturing a part, wherein the ribbon material is spaced apart in the length direction from a base having a uniform thickness in the length direction and the width direction. It is configured to be provided with a projection portion that is intermittently maintained and protrudes in the thickness direction from the base portion. It should be noted that the position and shape of the protrusion and the direction of protrusion with respect to the base are arbitrary depending on the shape of the final product, and for example, the protrusion does not prevent protrusion on both sides in the thickness direction of the base.

[0009]

In the invention according to claim 1, which has the above-described structure, in the rolling process of the ribbon material, a projection of a machining allowance sufficient to press-form the boss portion is secured from the material stage to a portion corresponding to the dimple of the rolling roller. To be done. Further, in the invention according to claim 2, by using it as a raw material, after that, substantially only the press working of the projection portion is performed with a small working energy by a small press machine (however, other auxiliary processing is performed. It does not prevent the addition), and the desired flange component can be manufactured.

[0010]

Embodiments of the present invention will now be described with reference to the drawings. 1 to 3 show a first embodiment in which the present invention is applied to manufacture a spring seat. FIG. 2 shows a metal ribbon material 1 used as a material for manufacturing a spring seat. The ribbon material 1 includes a strip-shaped base 11 having a uniform thickness t in a length direction y and a width direction x, and a length direction. Cylindrical projections 12 that are intermittently positioned at y intervals with a spacing p and project from the base 11 in the thickness t direction at approximately the center in the width direction x are provided.

Such a metal ribbon material 1 is manufactured by the rolling process shown in FIG. That is, eight cylindrical dimples 21 are formed on the outer circumference of one of the pair of forming rollers 2 and 3 by dividing the circumferential angle of the roller 2 into eight and forming each 45 °. Ribbon material 01
Are crushed according to the gap between the forming rollers 2 and 3 and extended to a predetermined thickness t of the base portion 11, and at the same time, are extruded into the respective dimples 21 so that the circumferential distance between the dimples 21 is increased. The intermittent protrusions 12 maintaining the pitch p corresponding to the above are bulged and formed.

FIG. 3 shows an example of a combination arrangement of rolling rollers. In this example, pressing rollers 4a to 4d, which are a pair of forming rollers 2 and 3 (shown by hatching in the figure), respectively, are provided. In this case, a three-stage support structure is adopted, in which they are supported by a pair of pressing rollers 5a to 5f and further supported by a pair of pressing rollers 6a to 6h.

When the spring seat T is manufactured by using the metal ribbon material 1 having the above-mentioned structure as a raw material, the base portion 11 does not require any special processing, and the projection 12 is subjected to press working to form a product outer shape. The final product shape can be obtained only by pressing, except for the incidental processing, by simply punching together. In particular, according to this method, the processing energy during the press working can be made extremely small.

Next, FIG. 4 shows a second embodiment of the present invention.
This metal ribbon material 1A is located intermittently with a strip-shaped base 11A having a uniform thickness t in the length direction y and the width direction x, with a space p in the length direction y, and in the width direction x. It is provided with a cubic projection 12A that protrudes in both directions with respect to the thickness t direction from the base 11A at approximately the center.
Such metal ribbon material 1A is also rolled by the same method as described above, but in this case, forming rollers forming a pair with square dimples are used.

Although the present invention has been described in detail based on the two embodiments, the present invention is not limited to the above-mentioned embodiments but various concrete configurations within the scope of the matters described in the claims. The present invention can be widely applied to other parts having the same form, without being limited to the above example.

[0016]

As described in detail above, according to the method of the present invention, a portion having a locally different cross-sectional area with respect to another portion such as a flange component having a boss is used while using a ribbon material as a raw material. It is possible to manufacture a large number of parts with a very small forging energy and a small number of processing steps. In particular, the thinner the flange thickness, the more effective the method of the present invention is. Further, according to the metal ribbon material of the present invention, the processing method as described above can be realized by using it as a raw material.

[Brief description of drawings]

FIG. 1 is a side sectional view showing a rolling process of a first embodiment of the present invention.

FIG. 2 is a perspective view showing the shape of a metal ribbon material.

FIG. 3 is a side view showing an example of a combination of rolling rollers.

FIG. 4 is a perspective view showing a metal ribbon material of a second embodiment of the present invention.

FIG. 5 is a perspective view showing an example of a conventional ribbon material.

FIG. 6 is a perspective view showing another example of a conventional ribbon material.

FIG. 7 is a perspective view showing a spring seat as an example of a flange component.

FIG. 8 is a perspective view showing a spring seated component as another example of the flange component.

[Explanation of symbols]

 1 Metal Ribbon Material 2, 3 Forming Roller (Rolling Roller) 11 Base 12 Projection 21 Dimple

Claims (2)

[Claims] 1. A method of manufacturing a component by using a metal ribbon material as a raw material to locally bulge a portion having a different cross-sectional shape with respect to another portion to form a part, wherein the portion is formed by the pressing work. In order to preliminarily form protrusions of a sufficient volume on the ribbon material during the rolling process, the ribbon material is rolled using a rolling roller having a dimple of a volume corresponding to the volume formed on the outer circumference. Parts manufacturing method. 2. A metal ribbon material used as a raw material for manufacturing a component, wherein the ribbon material is intermittently spaced from the base portion having a uniform thickness in the length direction and the width direction in the length direction. A metal ribbon material, characterized in that it is provided with a projection portion that is located and projects in the thickness direction from the base portion.