JP3402188B2 - Hollow blade for shearing section steel - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hole-type blade used for shearing a shape steel, and more particularly to a hole-type blade for shearing a shape steel capable of adjusting a clearance in the hole shape.

[0002]

2. Description of the Related Art When shearing a shaped steel with a hole-shaped cutting tool having a hole shape matching the sectional shape of a product, the hole-shaped cutting tool is composed of a fixed blade having a hole shape and a movable blade, and fixes the shape steel. It is sheared (diagonal shear or simply slant) by passing it through the hole of the blade and the movable blade and pushing the movable blade obliquely downward with respect to the fixed blade. Such hole-type blades for obliquely cutting a shaped steel are disclosed in, for example, Japanese Patent No. 2616365 and Japanese Patent Laid-Open No. 9-136212. However, all of the hole-type blades shown here are non-divided hole-type tools, and the clearance within the hole-type tool is not adjustable with respect to the dimensional variation within the tolerance of the shaped steel. At present, hole-type blades are rarely used in hot-rolled steel. The reason is that the dimensional accuracy of the hot-rolled shaped steel is poorer than that of the cold-formed shaped steel, and the clearance in the die must be increased, so that the deformation of the sheared surface of the shaped steel becomes large. . It is empirically known that the clearance must be 2 mm or less even for hot-rolled steel to obtain a good shearing surface. The tolerance is very large, for example, the tolerance is ± 2 m when the web height H = 200 mm.
Since there is also m, even if the clearance is 1 mm, the maximum clearance is 5 mm. After all, the clearance limit of 2 mm is easily exceeded, and the deformation of the sheared surface becomes large, so that the product cannot be obtained.

Further, Japanese Laid-Open Patent Publication No. 2-262908 discloses a structure in which a plurality of blades can be partially replaced along the sides of a hole die. This is a measure against blade wear and shearing. It is not for clearance adjustment to prevent surface deformation.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and in order to obtain a good sheared surface of shaped steel, the clearance in the die can be easily adjusted. It is an object of the present invention to provide a hole-type cutting tool for shearing a shaped steel that can be formed.

[0005]

A hole-type cutting tool for shearing a shaped steel according to the present invention comprises a fixed blade and a moving blade each having a hole shape corresponding to the cross-sectional shape of the shaped steel, and the moving blade is fixed to the fixed blade. In a shaped steel shearing hole type cutting tool for shearing a shaped steel by moving it diagonally with respect to the blade, the fixed blade and the front
A part of the hole shape of the moving blade is placed at the position in the web height direction of the shaped steel.
Each divided provided a split fixed blade and divided moving blades, before
The split fixed blade is the first fixed blade provided on the block body.
The blade and the first block that is slidable left and right on the block body.
2 fixed blades, the divided moving blade is slidable in an oblique direction.
A first moving blade provided on a moving slide block,
No. 1 that is slidably fitted in the slide block
2 moving blades, and the second fixed blade and the second
When sliding the moving blade in the height direction of the section steel web
It is characterized in that the clearance within the hole mold can be adjusted by adjusting the moving amount .

Further, the present invention has the following features. The divided fixed blade is the height direction of the section steel web.
A first fixed blade provided with one hole-shaped portion on the block main body that is divided at the opposite position, and a second fixed blade provided with the other hole-shaped portion that is held on the block main body so as to be slidable left and right. The blade includes a blade and a slider for moving the second fixed blade in the left-right direction (the height direction of the web of the shaped steel) via the taper means by moving up and down. The slider is a gate-shaped block that is vertically slidably fitted in a recess provided in the block body and has a tapered surface parallel to the inside, and the second fixed blade is in the block of the slider. A block that is fitted in the tapered body by engaging with its tapered surface, is slidably held by the hanger means on the block body in the left-right direction, and is provided with a notch opening of a hole-shaped portion corresponding to one flange portion of the shaped steel. The slider is fixed to the block main body through a vertical movement amount adjusting means. The dividing movable blade is provided with a first movable blade provided on a slide block that slides one hole-shaped portion that divides at a position in the web height direction of the shaped steel in an oblique direction, and the slide block. From a second moving blade fitted to the left and right slidable and provided with the other hole-shaped portion for dividing, and a means for fixing the second moving blade to the slide block via a means for adjusting the horizontal movement amount. Become. The hole-shaped portion of the dividing movable blade is divided along the vertical side corresponding to the side surface of the flange portion of the shaped steel. The second
The two fixed blades are vertically symmetrically arranged so as to correspond to the flange portion of the shaped steel, and the second movable blade is arranged so as to correspond to the side surface of the flange portion.

The hole-type blade for shearing a shaped steel of the present invention is a divided-type hole-type blade in which a part of the hole-type is divided.
Since the fixed fixed blade and the divided movable blade can be slid in the web height direction (horizontal direction) of the shaped steel to adjust the clearance within the hole die, it is an appropriate clearance against fluctuations within the tolerance of the shaped steel web height. (Clearance of 2 mm or less) can be secured. Therefore, a good shearing surface can be obtained and the adjustment can be easily performed in a short time. In addition, the split fixed blade is also called a second fixed blade, and the split moving blade is also called a second moving blade. These second fixed blade and moving blade are left and right with respect to the first fixed blade and moving blade. Since it is configured to be slidable in the direction, the hole die can be expanded and contracted in the web height direction, and an appropriate clearance can be adjusted.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a front view of a fixed blade and a movable blade in a hole type cutting tool of the present invention. In the figure, (a) shows a fixed blade, and (b) shows a moving blade. 2 and 3 are a sectional view taken along the line AA and a sectional view taken along the line BB of FIG. 1, respectively. The fixed blade 1 has a square block body 2 divided into a hole shape formed in accordance with the cross-sectional shape of a shaped steel (here, a grooved steel) 100 as a material to be sheared, and one of the hole shapes is divided. Part 3
The first fixed blade 1a provided with a and the cutout opening of the other hole-shaped portion 3b corresponding to one flange portion 101, which is provided slidably in the web height direction (horizontal direction) of the shaped steel 100. And a second fixed blade (or a split fixed blade) 1b provided with the above, and the movement in the up-down direction (direction of arrow a) is converted to the left-right direction (direction of arrow b) by the taper means to form the second fixed blade 1b. b
And a slider 4 that slides in the direction.

The slider 4 is composed of a gate-shaped block which is vertically slidably fitted in a recess 5 provided in the block main body 2 and has parallel tapered surfaces 4a and 4a inside thereof.
b is formed. The divided fixed blade, that is, the second fixed blade 1b is composed of a block fitted in the slider 4, the lower surface thereof is provided with a cutout of the hole-shaped portion 3b, and the left and right side surfaces are tapered surfaces 4a of the slider 4. Tapered surfaces 6a and 6b that engage with 4b, respectively. Further, as a hanger means for the second fixed blade 1b, the projection 7 provided in the recess 5 of the block body 2 is provided with the second fixed blade 1b.
The second fixed blade 1b is held so as to be slidable from side to side by being engaged with the elongated hole 8 of FIG. The surface of the slider 4 and the second fixed blade 1b fitted therein is the block body 2
Is formed to be flat so as to match the surface of the. Then, by adjusting the shim 9 (the shim 9 is inserted from the lateral direction) interposed between the upper surface of the slider 4 and the inner surface of the upper side of the concave portion 5, the vertical movement amount of the slider 4, that is, the second fixed blade. The shift amount of 1b is adjusted. After this adjustment, the slider 4 is fixed to the block main body 2 by the bolt 10 via the shim 9.

The movable blade 11 has a tapered surface 12 parallel to the left and right.
It is fitted into the guide block 12 having a and 12b,
A first moving blade in which a hole die formed according to the cross-sectional shape of the shaped steel 100 is divided into slide block 13 sliding in an oblique direction (direction of arrow c) and one hole die portion 14a is provided. 11a and the steel block 100 are slidably fitted in the web height direction (horizontal direction) into the slide block 13,
The other hole-shaped portion 14 corresponding to one flange portion 101
and a second movable blade (or divided movable blade) 11b provided with b. The dividing position of the hole type is the position of the vertical side corresponding to the side surface of the one flange portion 101 of the shaped steel 100, and the second movable blade 11 made of a square block.
The vertical sides on the opposite side of b form the hole portion 14b. Then, the second moving blade 11b is slidably fitted into the concave portion 15 so as to extend in a U shape from the divided position. The shift amount of the second movable blade 11b is adjusted by adjusting the shim 16 which is laterally inserted into the recess 15, and after the adjustment, the bolt 17 is used to adjust the second movable blade 1b.
1b is fixed to the slide block 13 via the shim 16.

The slide block 13 has parallel tapered surfaces 13a and 13b on the left and right sides, which engage with the tapered surfaces 12a and 12b of the guide block 12, respectively. Further, the slide block 13 is pushed diagonally downward by the knocker 18 when the shaped steel 100 is sheared, and is returned to the original position by the return spring 19 after the shearing is completed.

In the fixed blade 1 and the movable blade 11 configured as described above, the shift amounts of the second fixed blade 1b and the second movable blade 11b are adjusted by adjusting the shims 9 and 16, respectively. It That is, in the second fixed blade 1b, since the slider 4 moves up and down by adjusting the shim 9 that is inserted into the recess 5, the tapered surfaces 4a and 4b of the slider 4 and the tapered surface 6a, The second fixed blades 1b engaged with each other at 6b can be slid to the right when the slider 4 is descending and to the left when the slider 4 is ascending. Thereby, the hole-shaped portion 3a
The hole shape of the fixed blade 1 formed by 3 and 3b expands and contracts in the web height direction of the shaped steel 100, and the width dimension H1 shown in FIG. 1A can be made variable. Further, in the second movable blade 11b, the second movable blade 11b can be directly slid in the left-right direction by adjusting the shim 16 inserted into the recess 15. Also in this case, the hole shape of the movable blade 11 formed by the hole portions 14a and 14b expands and contracts in the web height direction of the shaped steel 100, and the width dimension H2 shown in FIG. 1B can be made variable. Therefore, the product height of the shaped steel 100 (web height)
When H fluctuates within the tolerance, by sliding the second fixed blade 1b and the second movable blade 11b accordingly, the clearance in each hole die is set to an appropriate overall value (2
mm or less). As a result, a good shearing surface can be obtained and the adjustment can be done easily in a short time.

The fixed blade 1 and the movable blade 11 are set one on top of the other in the front and back. After adjusting the clearance as described above, the shaped steel 100 is passed through the hole die, and the movable blade 11 is slanted downward by a knocker 18. And then the shaped steel 100 is sheared.

In the above embodiment, the case of the channel steel 100 has been described. In the case of I-shaped steel and H-shaped steel, the second fixed blade 1b and the second movable blade 11b may be arranged as shown in FIG. Two second fixed blades 1b having substantially the same structure as described above are used, and they are vertically symmetrically arranged so as to correspond to the flange portion of the shaped steel 100. The second movable blade 11b may have only one structure having substantially the same configuration as described above, and the flange portion 101
Place it so that it corresponds to the entire side of the.

[0015]

As described above, according to the present invention,
The fixed blade and the movable blade have hole-shaped parts in the web height direction of the shaped steel.
Since the fixed fixed blade and the divided movable blade divided at the positions are provided slidably in the web height direction of the shaped steel, it is possible to adjust the appropriate clearance against fluctuations within the tolerance of the web height. A good shearing surface can be obtained, and its adjustment is easy in a short time.
Therefore, the hole type cutting tool of the present invention can be particularly effective in shearing the hot rolled shape steel. Needless to say, it can be applied to cold-formed steel.

[Brief description of drawings]

FIG. 1 is a front view of a fixed blade and a movable blade of a hole type blade for shearing a shaped steel of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG.

FIG. 4 is a front view of a fixed blade and a movable blade in the case of H-shaped steel.

[Explanation of symbols]

1 fixed blade 1a 1st fixed blade 1b Second fixed blade (divided fixed blade) 2 block body 3a hole type part 3b hole type part 4 slider 4a Tapered surface 4b Tapered surface 5 recess 6a Tapered surface 6b Tapered surface 7 protrusions 8 slots 9 sims 10 volts 11 moving blades 11a First moving blade 11b Second moving blade 12 guide blocks 13 slide block 13a Tapered surface 13b Tapered surface 14a hole type part 14b Hole type part 15 recess 16 sims 17 Volts 18 knockers 19 Return spring 100 shaped steel 101 Flange

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Claims (6)

(57) [Claims] 1. A shape comprising a fixed blade and a movable blade, each of which has a hole shape corresponding to the sectional shape of the shaped steel, and shearing the shaped steel by moving the movable blade in an oblique direction with respect to the fixed blade. In a steel shearing hole type cutter, a part of the hole type of the fixed blade and the moving blade is formed by a shaped steel web.
Divide at position in the height direction and divide into fixed blades and splits
A movable blade is provided, and the divided fixed blade is a first fixed blade provided on the block body.
It was held on the fixed blade and the block body so that it could slide left and right.
A second fixed blade, and the divided movable blade is a slide block that slides in an oblique direction.
And a slide block provided on the first movable blade
A second movable blade that is slidably fitted to the left and right of the second fixed blade and the second movable blade.
Adjusting the amount of movement when sliding in the height direction
This is a hole-shaped blade for shearing a shaped steel, characterized in that the clearance inside the hole is adjustable. 2. The divided fixed blade has a first fixed blade having one hole-shaped portion to be divided provided on a block main body, and the other hole-shaped portion which is held by the block main body so as to be slidable left and right. 2. A second fixed blade provided with a slider, and a slider for sliding the second fixed blade in the left-right direction (the web height direction of the shaped steel) via the taper means by vertical movement. 1. A hole type blade for shearing a shaped steel according to 1. 3. The slider is a gate-shaped block that is vertically slidably fitted in a recess provided in the block body and has a tapered surface parallel to the inside, and the second fixed blade is A notch of a hole-shaped portion corresponding to one flange portion of the shaped steel, which is fitted into the block of the slider by engaging with the tapered surface thereof, is slidably held by the hanger means in the block body 3. The hole-type cutting tool for shearing a shaped steel according to claim 2, wherein the hole-shaped cutting tool comprises a block provided with a mouth, and the slider is fixed to the block main body through a means for adjusting a vertical movement amount. 4. The dividing movable blade is divided into a first moving blade provided on a slide block that slidably slides one of the hole-shaped portions to be divided, and is fitted to the slide block so as to be slidable left and right, and divided. 2. A second movable blade provided with the other hole-shaped portion to be fixed, and a means for fixing the second movable blade to the slide block via a means for adjusting the amount of lateral movement. A hole type blade for shearing a shaped steel as described. 5. The hole-shaped cutting tool for shearing a shaped steel according to claim 4, wherein the hole-shaped portion of the divided moving blade is divided by a vertical side corresponding to a side surface of a flange portion of the shaped steel. 6. The two second fixed blades are vertically symmetrically arranged so as to correspond to the flange portion of the shaped steel, and one second movable blade is arranged so as to correspond to the side surface of the flange portion. The hole type blade for shearing a shaped steel according to any one of claims 2 to 5, wherein