JPH05104147A - Manufacture of shape - Google Patents

Abstract

PURPOSE:To manufacture a shape such as an angle material or a channel material having corner parts at a low cost. CONSTITUTION:A deformed flat material 12 having corner parts 21a, 21b at the middle part is formed by rolling, then, both sides of one corner part 21a is bent and formed by a press bending equipment, then, both sides of the other corner part 21b is bent and formed by the press bending equipment to be formed into a channel material.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a shape member used for manufacturing a shape steel such as an angle material and a channel material.

[0002]

2. Description of the Related Art Conventionally, an elongated angle member 11 having a corner 11a at one central portion as shown in FIG.
When manufacturing a shaped steel such as a long channel material 21 having corners 21a and 21b at two places as shown in 1, the raw material is changed to a shaped steel such as the angle material 11 or the channel material 21 of the final product shape. Up to this point, they were all formed by rolling using multiple types of caliber rolls with different caliber shapes.

[0003]

However, in such a conventional method for manufacturing a shaped steel, since the raw material to the shaped steel of the final shape are all formed by rolling using plural kinds of caliber rolls, Since it is difficult to use the same caliber roll size, it is necessary to prepare many types of caliber rolls, and the roll peripheral speed difference tends to be large at the caliber part, resulting in a short roll life. As a result, there is a problem in that the loss due to roll replacement increases and the number of rolls to be held must be increased.

As described above, since it is necessary to increase not only the number of types of rolls but also the number of rolls held, the rolling roll cost becomes high, and
Since the types of rolling guides and the number of rolling guides are large, the rolling guide cost is high.

Further, since there are many types and numbers of caliber rolls and guides, there is a problem that the number of times of assembling the rolls and the guides is large and the number of assembling steps is large.

Furthermore, the large peripheral speed difference between the caliber rolls may cause rough skin at the ends of the angle member 11 and the channel member 21, and when the rough skin occurs, this portion is repaired. There was a problem that it was necessary.

Furthermore, when manufacturing the channel member 21 shown in FIG. 11, the angle member 1 shown in FIG. 10 is used.
Since the two are manufactured by arranging and welding two of them, there is a problem that the welding cost is added and the overall cost becomes high.

[0008]

SUMMARY OF THE INVENTION The present invention has been conceived in view of the above-mentioned conventional problems, and it is possible to reduce idle loss, roll cost, and guide cost by changing the stand.
It is an object of the present invention to provide a method for manufacturing a shaped steel such as an angle material and a channel material that can reduce the number of man-hours for assembling the roll and the guide and omit product rework.

[0009]

According to the method for manufacturing a shaped steel according to the present invention, when manufacturing a shaped steel such as an angle material or a channel material having a corner portion, a deformed shape having one or a plurality of corner portions is formed in an intermediate portion. After the flat material is formed by rolling such as roll rolling, both sides of the corners are formed by bending such as pressing to form the shaped steel such as angle material or channel material having corners. The feature is that the constitution of the invention relating to the method for manufacturing the shaped steel is used as means for solving the above-mentioned conventional problems.

Further, in the embodiment of the method for manufacturing a shaped steel according to the present invention, it is possible to form a plurality of deformed flat members into a wide one having a plurality of shapes by rolling such as a roll. In the same manner, in the embodiment, a pair of roller anvils and a pressing die which are spaced apart from each other are used for forming by bending using a press or the like, and the corner portions of the deformed flat material are positioned between the pair of roller anvils. It is also possible to center the deformed flat material by matching the shapes on both sides of the corners with the shape of the roller anvil.

FIG. 1 shows an embodiment of a method for manufacturing a shaped steel according to the present invention, in which a long material (A in FIG. 1) having a circular cross section or a rectangular cross section is rolled (FIG. 1). B) to form a deformed flat material (C in FIG. 1) having one or a plurality of corners in the intermediate portion,
If a large number of profiled flat materials are used, slit them in the length direction (D in Fig. 1) and then press-bend the profiled flat material to bend both sides of the corners. When a deformed flat material has a corner at one central part in forming a round shaped steel, press bending (E in Fig. 1) on both sides of this corner to process it. When an angled material (G in FIG. 1 and FIG. 10) is formed and the deformed flat material has corners at two places in the middle portion, both sides of one corner are press-bent (see FIG. 1). After being processed by E), both sides of the other corner portion are processed by press bending (F in FIG. 1) to form a channel material (H in FIG. 1 and FIG. 11).

[0012]

In the method for manufacturing a shaped steel according to the present invention, a deformed flat material having one or a plurality of corners is formed by rolling, and then both sides of the corner are bent by bending to form a corner. Since it is formed into shaped steel such as angle material and channel material that has a gap, as in the case of manufacturing all shaped steel such as angle material and channel material from raw material to shaped steel of the final product shape by rolling processing. It is not necessary to have many caliber rolls and guides of many types, and it is sufficient to prepare a small number and a small number of rolling rolls and rolling guides required to roll-form deformed flat material with corners. Therefore, the roll cost and the guide cost are reduced, and the man-hours for assembling the roll and the guide are reduced. Since the peripheral speed difference of the roll is small, the roll life is long, and the surface of the leg of the shaped steel does not become rough due to the peripheral speed difference, so no work is required to rework the product. .

Further, since the channel material is manufactured by the same process as the angle material without welding the angle material, the welding cost becomes unnecessary.

[0014]

【Example】

(Embodiment 1) FIGS. 2 to 4 show one embodiment of the present invention, which is shown in FIG. 2 by rolling a rolling material having a rectangular or circular cross section (not shown) with a caliber roll. Corner 11a at a central location such as
3 is formed into a deformed flat material 12, and then, as shown in FIG. 3, a press bending forming apparatus 16 provided with a bending forming table 14 and a pressing die 15 on which two roller anvils 13a and 13b are rotatably provided. 2 is used to place the deformed flat material 12 shown in FIG. 2 on the two roller anvils 13a and 13b such that the central corner portion 11a is located between the two roller anvils 13a and 13b.

At this time, the corner portion 11 of the deformed flat member 12
Rounded shape (R) on both sides of a and roller anvil 13a, 1
By combining the curved shape (R) of 3b, centering of the deformed flat material 12 on the roller anvils 13a and 13b can be performed easily and accurately.

Next, the push die 15 is gradually lowered, and as shown in FIG. 4, the push die 15 is lowered to its lower limit, and both sides of the corner portion 11a are bent to form the shape shown in FIG.
The angle member (shaped steel) 11 having one corner 11a as shown in FIG.

(Embodiment 2) FIGS. 5 to 8 show another embodiment of the present invention, in which a rolling material having a rectangular or circular cross section (not shown) is rolled by a caliber roll. A deformed flat material 12 having corners 21a and 21b at two intermediate places as shown in FIG. 5 is formed, and then, as shown in FIG. 6, two roller anvils 13a and 13b are rotatably provided. Using the press bending apparatus 16 including the forming table 14 and the pressing die 15, the deformed flat material 12 shown in FIG. 5 is provided with two roller anvils 13a each having a corner 21a on one side (right side in the figure) of two.
It is placed on these two roller anvils 13a, 13b so as to be located between 13b.

At this time, the corner portion 21 of the deformed flat member 12
Rounded shape (R) on both sides of a and roller anvil 13a, 1
By combining with the rounded shape (R) of 3b, centering around the corner portion 21a of the deformed flat material 12 on the roller anvils 13a, 13b can be performed easily and accurately.

Next, the push die 15 is gradually lowered, and as shown in FIG. 7, the push die 15 is lowered to its lower limit to bend both sides of the corner portion 21a on one side.
Place the corner 21b on the other side (left side in the figure) on the two roller anvils 13a, 13b so that they are located between the two roller anvils 13a, 13b.
8 and the round shapes of the roller anvils 13a and 13b are used to center the other corner portion 21b, and then the pressing die 15 is gradually lowered. As shown in FIG. By lowering 15 to its lower limit and bending both sides of the corner portion 21b on the other side, two corner portions 21 as shown in FIG.
A channel material (shaped steel) 21 having a and 21b is formed.

(Embodiment 3) FIG. 9 shows still another embodiment of the present invention, in which a rolling material having a rectangular or circular cross section (not shown) is rolled by a caliber roll, and Corners 1 at 2 places as shown in
Deformed flat material 1 having two pieces 1a and 11a
2 and then cut this profiled flat material 12 at the center to form two profiled flat materials 12 having the same width W and having the corner 11a in the center having the same shape as shown in FIG.
2 and having the corner portion 11a in the center as shown in FIG. 10 by bending both sides of the corner portion 11a according to FIGS.
The angle material (shaped steel) 11 is formed into a book.

[0021]

INDUSTRIAL APPLICABILITY In the method for manufacturing a shaped steel according to the present invention, when manufacturing a shaped steel such as an angle material having a corner portion or a channel material, a deformed flat material having a corner portion at an intermediate portion is formed by rolling. After that, both sides of the corners are bent to form the shape steel with angled parts such as angle material and channel material. It is no longer necessary to have many caliber rolls and guides of many kinds as in the case of manufacturing all shaped steels by rolling, and it is possible to reduce the number of types required to roll-form deformed flat materials with corners. Since it is sufficient to prepare a small number of rolling rolls and rolling guides, the roll cost and guide cost can be significantly reduced.

Further, since the number of rolls and guides is small, the number of man-hours for assembling them is reduced, and the peripheral speed difference of the rolls is small, so that the roll life is long and the stand and the mold are changed. The idle loss is significantly reduced, and the rough skin on the legs, which is seen when the peripheral speed difference is large, is less likely to occur, and the work of reworking the product can be omitted, and the channel material is angle material. Since it can be manufactured in the same process as that for the angle material without using welding, the manufacturing cost of the channel material is significantly reduced.

[Brief description of drawings]

FIG. 1 is an explanatory view showing an embodiment of a method for manufacturing a shaped steel according to the present invention.

FIG. 2 is an explanatory view showing the shape of a deformed flat material formed by rolling in Example 1 of the present invention.

FIG. 3 is an explanatory diagram showing a state in which the deformed flat material shown in FIG. 1 is installed in a press bending apparatus in Example 1 of the present invention.

FIG. 4 is an explanatory diagram showing a state in which both sides of the corner portion of the deformed flat material shown in FIG. 1 are press-bent to form an angle material in Example 1 of the present invention.

FIG. 5 is an explanatory view showing the shape of a deformed flat material formed by rolling in Example 2 of the present invention.

FIG. 6 is an explanatory view showing a state in which one corner portion of the deformed flat material shown in FIG. 5 is installed in a press bending apparatus in Embodiment 2 of the present invention.

FIG. 7 is an explanatory view showing a state in which both sides of one corner of the deformed flat material shown in FIG. 5 are press-bent in Example 2 of the present invention.

FIG. 8 is an explanatory view showing a state in which both sides of a corner portion on the other side of the deformed flat material are press-bent to form a channel material in Example 2 of the present invention.

FIG. 9 is an explanatory view showing the shape of a wide two-dimensional deformed flat material formed by rolling in Example 3 of the present invention.

FIG. 10 is an explanatory diagram showing a shape example of an angle member.

FIG. 11 is an explanatory diagram showing a shape example of a channel material.

[Explanation of symbols]

 11 Angle Material (Shaped Steel) 11a Corner Part 12 Deformed Flat Material 13a, 13b Roller Anvil 15 Push Mold 16 Press Bending Forming Device 21 Channel Material (Shaped Steel) 21a, 21b Corner Part

Claims (3)

[Claims] 1. When manufacturing a shaped steel such as an angle material having a corner portion or a channel material, a deformed flat material having a corner portion at an intermediate portion is formed by rolling, and then both sides of the corner portion are formed by bending. Then, the method for producing a shaped steel is characterized in that the shaped steel is shaped into a shaped steel such as an angle material having a corner or a channel material. 2. The method of manufacturing a shaped steel according to claim 1, wherein a plurality of deformed flat materials are formed into a wide one by rolling. 3. A pair of roller anvils and a pressing die which are spaced apart from each other are used for forming by bending, and the corners of the profiled flat material are positioned between the pair of roller anvils and both sides of the corners are formed. The method for manufacturing a shaped steel according to claim 1 or 2, wherein centering of the deformed flat material is performed by matching the shape and the shape of the roller anvil.