JP2578300B2 - Cutting method by cutting press for shaped steel and cutting press for shaped 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 cutting method using a section steel cutting press and a section steel cutting press.

[0002]

2. Description of the Related Art Heretofore, a vertical press stroke type has been used as a cutting press for cutting, for example, an angle steel, a channel steel, a lip channel steel, an H-section steel, or the like. That is, it is a cam type mold as shown in FIG. 5, in which the work W placed in the horizontal state is cut by applying a load to the upper blade from the vertical direction in a vertical direction, and the lower blade D is fixedly attached. The mold holder 201 has a frame shape. The mold holder 201 is configured by combining a lower plate 205 and an upper plate 207 with a guide plate 203 provided on the left and right sides.
Is a triangular member 20 provided in a mold holder 201 having substantially no rhombus.
9 and is in contact with a triangular swing piece 211 on one lower side of the upper blade P.

The rocking piece 211 is always urged by a bullet 213 in a projecting direction, that is, a direction in which it comes into contact with the inclined surface of the upper blade P. Further, a pressing member 215 that is in contact with the inclined surface is mounted on one upper side of the upper blade P.

When the pressing member 215 is pressed by, for example, a hydraulic cylinder, which is a member of the press body, not shown in the drawing, the upper blade P moves obliquely along the inclined surface and cuts the work W. Is performed.

[0005] In addition, when the work W is cut, lubricating oil is generally applied directly to the work W for cutting.

[0006]

However, in the above-described conventional cutting press for section steel, since it is a cam-type mold, it is necessary to fix the mold with bolts or the like for preventing thrust. Met. Further, there is a problem that friction occurs at the time of operation of the upper blade and wear of the member is fast. Furthermore,
Since the lubrication at the time of cutting is directly applied to the work, there is a problem that a large amount of oil adheres to the work or that a necessary amount of lubrication is not supplied to the cutting portion.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above problem by operating a direct-acting mold in a direction crossing a section steel, and placing the mold on a V-block outside the machine. Place
Shifting the V-block to the machining position in the machine and fixing it with the locking member improves safety work and improves the positioning accuracy of the mold, while also cutting the section for lubrication to the cutting point and protecting the cutting edge. An object of the present invention is to provide a cutting method by a press and a cutting press for a shaped steel.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a cutting method for cutting a steel bar in a horizontal state with a press body being inclined at a predetermined angle. The V-block supporting the mold holder incorporating the lower blade and the lower blade is pulled out of the press frame, and the mold holder incorporating the upper blade and the lower blade is placed on the V-block. The V-block and the press frame are fixed by a locking member, and the section steel is cut by the cooperation of an upper blade and a lower blade. is there.

Further, the present invention provides a cutting press for a shaped steel which cuts a shaped steel placed in a horizontal state while the press body is inclined at a predetermined angle, and incorporates an upper blade and a lower blade. A metal mold holder is provided, and a V
The block is provided movably to the outside of the press frame, and when the mold holder is at the processing position of the press body,
An engaging member for fixing the V block and the press frame was detachably provided to constitute a section steel cutting press.

[0010] In the cutting press for shaped steel, an oil supply device for supplying oil to a cutting portion of the upper blade and the lower blade incorporated in the mold holder is provided in the press frame, and an oil supply port of the oil supply device is formed in the lower blade. It is desirable to be provided so as to be able to freely contact and separate from the inflow port.

[0011]

By adopting the cutting method and the cutting press for a shaped steel according to the present invention, first, in order to mount the die on the press body, the V block is moved to the outside of the press frame. On this V block, a mold holder incorporating an upper blade and a lower blade suspended by, for example, a crane or the like is placed.

After the mold holder is placed on the V-block, the V-block is moved and positioned at a processing position in the press frame. Then, the locking member is inserted between the mold holder and the press frame to fix the mold holder, and a cutting process is performed. Further, at the time of cutting, the oil supply device is operated to supply oil to the cut portions of the upper blade and the lower blade.

When replacing the mold holder, the above operation can be performed in reverse.

[0014]

Embodiments of the present invention will be described below in detail with reference to the drawings. In addition, as the section steel cut by the section steel cutting press, for example, angle iron, channel steel, lip channel steel,
Although the present invention is applied to an H-section steel or the like, the present embodiment will be described for a channel steel.

Referring to FIG. 1 and FIG. 2, the channel steel placed in a horizontal state is not shown, but is carried in from a direction perpendicular to FIG. 1 by a transfer table. The press body 5 includes, for example, 4
It is provided at an angle of 5 degrees.

The press frame 3 has an upright side plate 3a.
And a top plate 3c for supporting the press body 5. The press body 5 mounted on the upper plate 3c includes a cylinder 7 operated by fluid pressure and a cylinder 7
And the striker 11 connected to the piston rod 9 of the striker 1 as shown in FIG.
1 is provided with a bracket 13. A swing shaft 15 is fixed to the bracket 13, and the swing shaft 15 is attached to the upper plate 3.
c, the support plate 19 is fixed to the tip of the swing shaft 15 and the rods 21 are provided on both sides of the support plate 19.
Is fixed, and the bar 21 is attached to the bracket 13.
And can swing freely.

Each of the rods 21 has a dog 23
a, 23b are mounted, and the dogs 23a, 23b
Are provided on the upper plate 3C. By fixing the dogs 23a and 23b at appropriate positions on the bar 21, the dogs 23a,
23b can operate the limit switches 25a and 25b to detect the moving range of the striker 11.
Since the configuration of each of the above-described members is a known configuration, a detailed description and operation thereof will be omitted.

A die holder 29 incorporating a lower blade D and an upper blade P is placed on a V-block 31 and positioned at a processing position 27 immediately below the striker 11 of the press body 5.

The mold holder 29 has a frame shape in which a lower plate 35 and an upper plate 37 are joined to guide plates 33 provided on both sides, and a lower blade D and an upper blade P are provided inside the frame. .

More specifically, referring to FIG. 3 and FIG. 4, a lower blade D is shown in FIG. 4, and the lower blade D has substantially the same shape as the channel steel for cutting the channel steel. A cutting die 39 is provided. An oil groove 43 for supplying oil to the cutting die 39 and oil grooves 43 are formed on both sides where the upper blade P slides.

The above-mentioned lower blade D and the upper blade P with a cutting die 39 formed in the lower blade D are mounted on a mold holder 29, and details are shown in FIG. The upper blade P is provided in contact with the lower blade D, and the upper portion of the upper blade P penetrates a hole 45 formed in the upper plate 37 of the mold holder 29, and the upper blade P
A pressing plate 47 is integrally provided on the upper surface of the device. An elastic machine 49 is mounted between the lower surface of the pressing plate 47 and the upper plate 37 of the mold holder 29, and is constantly urged to project the upper blade P upward. Reference numeral 51 denotes a stopper plate for restricting the upper blade P from ascending. Further, a notch 53 is formed in the lower plate 35 of the mold holder 29 so as not to interfere when the upper blade P descends.

With the above configuration, the upper blade P is always in the
Rises due to the repulsive force of the upper blade P and is at the limit of rising from the stopper plate 51. At this time, the cutting dies 39
Are at the same position, and the workpiece W is inserted into the cutting die 39. Then, the cylinder 7 shown in FIG. 1 is operated, the striker 11 is lowered, the pressing plate 47 of the upper blade P is pressed, and the upper blade P is lowered to perform cutting.

The lubricating device 55 for lubricating the lower blade D includes:
As shown in FIG. 3, the oil mist-like lubricating oil is supplied from the oil supply source (not shown) to the flexible hose 5 through an air adjuster 57 provided on the side plate 3a of the press frame 3 and the like.
9 and to the fuel supply port 61. This filler port 61
Is connected to a fluid-operated piston rod 65 of, for example, an air cylinder 63 provided inside the side plate 3a, and is provided so as to abut or separate from a boss 67 having an inflow port provided in the lower blade D. .

With the above configuration, when cutting the work W,
The oil supply device 55 is operated to supply oil mist-like lubricating oil to the vicinity of the cutting die 39 of the lower blade D. That is, by operating the air cylinder 63 and bringing the oil supply port 61 into contact with the surface of the boss 67 having the inflow port provided in the lower blade D, the flow path of the oil mist is formed. When replacing the mold holder 29, the air cylinder 63 is operated to reduce the piston rod 65, the oil supply port 61 is separated from the surface of the boss 67, and the oil supply is stopped. Done.

Thus, it is possible to reliably lubricate the cut surface of the work, to protect the cutting edge, and to prevent excess lubricating oil from adhering to the work as in the related art.

Referring to FIGS. 1 and 2 again, the structure of the V block 31 on which the mold holder 29 is placed is such that the mold holder 29 is inclined at 45 degrees, for example.
It is placed on the block 31, and as the V block 31,
Triangular blocks 71 and 73 are provided opposite to each other on the support plate 69. The block 73 is fixed to a support plate 69, and the block 71 is connected to an adjustment bolt 77 screwed to a bearing 75 provided at an end on the support plate 69. By tightening or loosening the adjustment bolt 77, the block 71 moves left and right.
The center position of the mold holder 29 placed on the press 73 can be made to coincide with the center of the press body 5.

A bracket 79 is suspended from a lower surface of a support plate 69 of the V-block 31, and a piston rod 83 of a hydraulically operated cylinder 81 fixed to a lower surface of a base plate 3b constituting the press frame 3. The bracket 79 is connected via a pin 87 to a fork end 85 provided at the tip.

With the above arrangement, when the cylinder 81 is operated and the piston rod 83 is protruded, the V-block 3
1 moves to the outside of the press frame 3, and when the piston rod 83 is reduced, the V block 31 positions the inside of the press frame 3, that is, the mold holder 29 supported by the V block 31, to the processing position 27. Can be.

The support plate 69 of the V-block 31 swings on the base plate 3b of the press frame 3;
Since b is provided with a rail member 89 extending therefrom,
The V block 31 can be moved to the outside of the press frame 3. Then, the V block 31 is inserted into the press frame 3
The mold holder 29 is placed on the V block 31 and pulled into the press frame 3, and the center of the mold holder 29 is positioned at the processing position 27 which is the center of the press body 5. A block 91 provided inside the side plate 3a of the press frame 3 is positioned by a key 93 and fixed by a tightening bolt 95 (see FIG. 2).

The blocks 71 and 73 of the V-block 31 are inserted into the inner surface of the block 91, and the key groove 97 provided on the swinging side surface of the block 73 and the key groove provided opposite to the inner surface of the block 91. 99 and the locking member 1
For example, a key 105 provided with a handle 103 is inserted as 01. When the key 105 is inserted, the center of the mold holder 29 placed on the V block 31 is positioned and fixed at the processing position 27 of the press body 5.

In order to suspend the mold holder 29, the suspending member 10 is located at the position of the center of gravity of the suspending of the mold holder 29.
7 is fixed.

According to the above configuration, in order to position the mold holder 29 incorporating the upper blade P and the lower blade D on the press body 5,
By operating a cylinder 81 provided on the V-block 31 to extend and retract the piston rod 83, the piston rod 8
Support plate 6 supporting blocks 71 and 73 connected to 3
9 is transferred. The pulled-out state is indicated by a two-point line in the drawing of FIG. 1, and the V-block 31 is pushed out of the press frame 3.

In this state, the mold holder 29 in which the desired lower blade D and upper blade P are assembled is suspended from the storage location by the hanging member 107.
The mold holder 29 is dropped and placed directly above the blocks 71 and 73 by carrying a wire, for example, on a crane or the like.

When the mold holder 29 is placed on the V block 31, the cylinder 81 of the V block 31 is operated, and
The V block 31 is pulled into the press frame 3, the center of the lower blade D and the upper blade P incorporated in the mold holder 29 is positioned at the processing position 27, and the key 105 serving as the locking member 101 is moved to the key groove 97, The V-block 31 is fixed to the press frame 3 by inserting it into the press frame 3. Then, the channel steel is fed into the cutting die 39, the channel steel is stopped at a desired processing position, the cylinder 7 of the press body 5 is operated, and the pressing plate 47 of the upper blade P is pressed via the striker 11. And upper blade P and lower blade D
In cooperation with the above, the channel steel is cut.

When the cutting process is completed and the upper blade P and the lower blade D are exchanged, the above operation can be performed in reverse.

Thus, the die holder 29 is placed on the V-block 31 outside the press frame 3, and the V-block 31 is moved to be positioned at the internal processing position of the press frame 3. Since the V-block 31 is fixed, safe operation can be performed by simple operation without much human labor.
The positioning accuracy of the mold can be improved.

The present invention is not limited to the embodiment described above, but can be embodied in other modes by making appropriate changes.

[0038]

As will be understood from the above description of the embodiments, according to the present invention, since the press body is inclined, the mold is formed by inclining the press body, as described in the claims. When the die is operated in a direction crossing the steel and the die is replaced, the V block on which the die is placed is transferred to the outside of the press frame. Then, the die is placed on the V block outside the press frame, the die is drawn into the press frame, positioned at the processing position, and the V block is fixed to the press frame by the locking member.

Therefore, the mold exchange does not require much manpower,
Safety work and improvement of positioning accuracy of the mold can be achieved.

Further, by forcibly lubricating the cutting portion of the mold, the cutting edge can be protected and the life of the mold can be prolonged without causing excess lubricating oil to adhere to the shaped steel.

[Brief description of the drawings]

FIG. 1 is an explanatory cross-sectional view showing an overall configuration of a section steel cutting press according to the present embodiment.

FIG. 2 is an enlarged plan view as viewed from an arrow II in FIG.

FIG. 3 is an enlarged sectional view taken along line III-III in FIG.

FIG. 4 is a front view of a lower blade according to the embodiment.

FIG. 5 is a front view of a mold holder incorporating a lower blade and an upper blade according to a conventional example.

[Explanation of symbols]

 Reference Signs List 1 cutting press for section steel 3 press frame 5 press body 27 processing position 29 mold holder 31 V block 55 lubrication device 61 lubrication port 67 boss (inflow port) 101 locking member P upper blade D lower blade

Claims (3)

(57) [Claims] 1. A V-block for supporting a mold holder incorporating an upper blade and a lower blade when cutting is performed on a shaped steel placed in a horizontal state while the press body is inclined at a predetermined angle. Pull out to the outside of the press frame, place a mold holder incorporating the upper blade and lower blade on the V block, position the V block in the press frame and position it at the processing position. And cutting the shaped steel with the cooperation of an upper blade and a lower blade. 2. A die holder having a cutting blade for a shaped steel which performs a cutting process in a state where a press body is inclined at a predetermined angle with respect to a shaped steel placed in a horizontal state, and a die holder incorporating an upper blade and a lower blade. And a V block on which the mold holder is mounted is movably provided to the outside of the press frame. When the mold holder is at the processing position of the press body, the V block and the press frame are fixed. A cutting press for shaped steel, wherein a locking member is provided detachably. 3. A press frame is provided with an oil supply device for supplying oil to a cutting portion of an upper blade and a lower blade incorporated in the mold holder, and an oil supply port of the oil supply device is freely connected to and separated from an inflow port formed in the lower blade. 3. The cutting press for a shaped steel according to claim 2, wherein the cutting press is provided on a section.