JPS5884629A - Method and apparatus for manufacturing overhung sectional plate - Google Patents

Abstract

PURPOSE:To manufacture a sectional plate having overhung shape quickly without wasting material by protruding an angular projected stripe formed on one side of a nearly V-shaped groove provided on a long flat material. CONSTITUTION:A nearly V-shaped cut groove 5 having a slant face 5a and a nearly vertical face 5b is formed by pressing a wedgelike member to a specified position inside from an edge of a long flat material 1 having a rectangular sectional form. Simultaneously with forming of the cut groove 5, an angular projected stripe 6 and connected flat concave part 7 are formed by pressing, and at the same time, edge 4 side of the material 1a is bulged. Then, the material 1a of other side of the cut groove 5, that is, the side facing the projected stripe is stretched gradually to the side direction, and deformed to sectional form having a flat part. After completion of stretching, inner slant face 6a of the projected stripe 6 is pressed to the side direction, and the top 6b is bulged on a thin flat part. Thus, a product 10 provided with a overhung part 9 is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for manufacturing cross-sectional plates of metal material with overhangs, such as dovetail cross-sections, for use in electrical components and other applications.

Conventionally, this cross-section plate has been generally manufactured by cutting, and it has been sliced and provided as a specialty part.
Since most of the material becomes chips during cutting, it is uneconomical and has poor workability, especially when the thickness of the thin section a is 0.3 mm as shown in Figure 1. m to 1mm5 The thickness of the thick part is 0.61
The long cross-sectional plates of 27fi7M, in which the step C has an overhanging shape, have the above-mentioned disadvantages and cannot be manufactured at a low cost.

The present invention solves these inconveniences by applying pressure to the long flat plate material previously proposed by H Tagan using a flat die, and transferring the material each time the pressing is completed to create a long plate with thick and thin parts. Apparatus for manufacturing shaku irregular cross-sectional plates (Patent No. 909768, Patent No. 1
The first invention relates to a manufacturing method, and the first invention relates to a manufacturing method, and the first invention relates to a method for manufacturing a long flat plate material. A wedge-shaped member is press-fitted at an inner position with a distance from the edge to form a substantially V-shaped split groove, and at the same time, a chevron-shaped protrusion and a relatively shallow flat recess connected to the chevron are formed on one side of the split groove. The entry portion is suppressed, and then the material on the fIJ side of the split groove is expanded laterally to form a thin flat portion, while pressing the inner slope of the rJf-shaped protrusion to form the entire top portion of the flat portion. The second invention relates to a manufacturing device, in which a movable long flat plate material facing the machining surface ζ
In addition, a flat diamond is provided which is intermittently pressed against this, and on the front part of the pressing surface of the die, there is a long ridge with a sharp point at the front and a trapezoid shape which gradually becomes wider at the rear. Also, a parallel flat part is formed between the ridges and the ridges, and the pressure contact of the front part of the die causes the material to have a thin flat part and a relatively thin flat part between the ridges and the ridges. A cross-sectional shape having a shallow flat concave portion is formed, and a protrusion continuous at the same height as the protrusion of the height and the same height as the flat portion is provided at the rear part of the pressure contact surface of the die. A continuous flat part is formed between the protrusion and the flat part, and the front side is continuous with the ■-shaped groove and the width is widened toward the protrusion side, and the rear side is on the protrusion side. A concave groove that gradually approaches and becomes narrower? It is characterized in that the chevron-shaped protrusions of the material are formed so as to overhang the thin flat portion.
To explain the practical example of the first invention of the present invention with reference to the drawings, in FIG. The material, (2) shows its processed surface, (3j shows the back side backed up by a relatively firm base, and the edge of the material fi+ (41) is placed on the processed surface (2) at an inner position at a distance from A wedge-shaped member is press-fitted to create an inclined slope (5
8) and a substantially V-shaped groove (5b) having a substantially vertical surface (5b).
5) Form. At the same time as the groove (5) is formed, a chevron-shaped protrusion (6) and a flat concave part (7) are formed on one side of the groove by pressing, and as a result, the material (1) is compressed at its edge. The edge (41) bulges out to form a shape as shown in FIG.
) The material (1a) on the opposite side is gradually spread to the other side to be transformed into a cross-sectional shape having a thin flat part (8) as shown in figure (d). ), this was done by gradually widening the 7-shaped groove (5) laterally. Furthermore, after the end of this expansion or split groove (
When the expansion of 5) has progressed to a certain extent, the protrusion (6) is formed.
011] Press the slope (6a) i sideways to remove the top (
6tD)′j? c. A product (101) having an overhanging part (9) as shown in Figure (f) is obtained by extending the thin flat part (8) above the thin flat part (8). In this case, the flat recessed part (7)
) is preferably one that continues to be subjected to the intercalation pressure in the groove that becomes the product OI.

In the case shown in the figure, two parallel grooves (51f5+k) are formed by fully press-fitting the tree-shaped member at two positions on the inside, and chevron-shaped protrusions (61161i) are formed on the inside of the two grooves (51f5+k), and a flat recess (61161i) is formed in the middle. 7), and each chevron-shaped protrusion (6) was made to protrude above the outer thin flat part 181F81 to form an overhang part (91 (91) at two places, but
The overhang portion (9) may be formed at one or more arbitrary locations, and may be formed at three locations as shown in FIG. 5, for example.

Next, an apparatus for manufacturing an overhang cross-sectional plate according to the second invention will be explained with reference to FIGS. 6 and 4.

Figure 3 shows the outline of the device, and shows the long flat plate material (1).
can be freely transferred by a suitable intermittent transfer device (not shown), and a flat die (1υ) is provided that faces the processing surface (2) and is intermittently pressed against this.The flat die 0υ For example, the material (1) is subjected to a moving load such as a pressure roller that moves back and forth from its front part to its rear part.
and a flat base (121), and the die (11)
While the material (1) is being separated from the material (1), the material (1) is transported somewhat in the direction of the arrow, and by repeating this process, the processing surface (2) of the material (11) is sequentially processed. The configuration was substantially the same as that proposed previously, but the flat die (IIHc) was configured as follows to produce an overhang-shaped cross-sectional plate.

That is, the front part (11b) of the pressure contact surface (11a) to the material (1) of the Podai (former Podai) has a length with a sharp point H at the front and a trapezoidal shape 04) which gradually widens at the rear as shown in Figure 4. protrusion 05
) and the protrusion (151), which are parallel to each other through the ■-shaped groove Oe, are formed between the protrusion (151) and the protrusion (151). J
At the same time, there is a gap between the protrusion and the flat part (19J).
The +1 side is continuous with the ■-shaped groove (IFD) and the protrusion (1
A relatively wide concave groove (@) whose width is widened toward the 81 side and whose rear portion gradually approaches the end of the protrusion and becomes narrower is formed. Thus, when the front part (11b) of the tie (former tie) is pressed against the machined surface (1b) of the long flat plate material tl+, the kneading process first occurs as shown in FIG. 2(b).
A cross-sectional shape as shown in FIG.
A cross-sectional shape having a thin flat part (8), a chevron-shaped protrusion (6), and a relatively shallow flat recessed part (7) as shown in Figure (d) is formed, and as the molding progresses further, a chevron-shaped protrusion of the material tl+ is formed. (
6) is gradually pushed by the side surface of the concave groove (A) that is continuous with the ■-shaped concave groove 06) and protrudes onto the thin flat part (8), forming a thick part and a thin part as shown in Fig. 2 (f). The product 00) is provided with an overhang part (9) at the stepped part.

As described above, according to the present invention, the chevron-shaped protrusion formed on one side of the approximately ■-shaped groove in the long flat plate material is made to protrude, so that the entire cross-sectional plate with an overhang shape extending southward is formed. It can be manufactured without wasting material, and it is also possible to quickly form an overhang shape on a long or thin material.The second invention also has a long protrusion on the front part and a V-shaped concave groove therebetween. A parallel flat part is provided at the rear part, and a protrusion continuous to the long protrusion and a flat part continuous to the flat part are provided at the rear part, and between them a relatively wide protrusion continuous to the V-shaped groove is provided at the front. A flat die with a concave groove with a narrow width at the rear is intermittently pressed against a movable flat plate material, allowing continuous production of overhang-shaped cross-sectional plates and a long die life. There are effects such as cost reduction.

[Brief explanation of drawings]

Fig. 1 is a front view of an overhang forming plate, Fig. 2 is a diagram showing an example of the manufacturing method of the present invention, and Fig. 3 is an overall side diagram showing an example of the manufacturing apparatus of the invention. , FIG. 4 is a bottom view of the main part thereof, and FIG. 5 is a front view of another example of the overhang cross-sectional plate.

Claims (1)

[Scope of Claims] L A wedge-shaped member is press-fitted into the machined surface of a long flat plate material at an inner position with a distance from the edge thereof to form all approximately V-shaped grooves, and at the same time m pieces of the grooves are formed. The entire chevron-shaped protrusion and the relatively shallow flat recess connected thereto are formed by pressing, and then the material on the other side of the groove is formed. A method for manufacturing an overhang-shaped cross-sectional plate, characterized in that it is expanded laterally to form a thin flat section, and further, the inner slope of the chevron-shaped protrusion is completely suppressed so that the top thereof is placed above the flat section. 2. A flat die is provided opposite to and intermittently pressed against the machining surface of the long flat plate material of the moving target, and a die with a sharp point at the front and a gradually wider rear end is provided at the front of the press surface of the die. A parallel flat part is formed between the trapezoidal high protrusion and the slightly lower protrusion through a ■-shaped groove to press the front part of the die. According to this method, a cross-sectional shape having a thin flat part, a chevron-shaped protrusion, and a relatively shallow flat recessed part is formed in the material, and a protrusion with the same height as the protrusion is formed on the raft part of the pressure contact surface of the die. The entire structure includes a protrusion continuous in height and a flat part continuous at the same height as the flat part, and between the protrusion and the flat part, the front is continuous with the V-shaped groove and the protrusion is formed. Forming a relatively wide concave groove whose width is widened on the strip side and whose rear part gradually approaches the protrusion side and becomes narrower, so that the chevron-shaped protrusion of the material is formed into an overhang shape on the floating flat part. Manufacture and installation of an overhang-shaped cross-sectional plate characterized by making it look like a river.