JPH1085855A - Shape steel working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the dimensional accuracy in drilling a hole in a tail end of a shape steel. SOLUTION: A drilling unit to drill a hole in a shape steel positioned at the drilling position is provided on a drilling machine body having the V-shape drilling standards to position a shape steel W to the drilling position. Two clamp arms 21 to clamp the shape steel are provided on the work carry-in side and the work carry-out side in the drilling unit. A holding part 25 to clamp a side edge of the shape steel in accordance with the V-shaped drilling standards are provided on one end side of the clamp arm 21, and a turning means to turn the clamp arm 21 through a hinge 23 is provided on the other end side of the clamp arm 21. When a hole is drilled in the vicinity of a tail end of the shape steel, in particular, a flat bar, the clamp arm 21 on the work carry-out side clamps a part in the vicinity of the tail end of the flat bar even when the flat bar is detached from the clamp arm 21 on the work carry-in side, and the drilling excellent in dimensional accuracy can be performed in the flat bar.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a section machine, and more particularly, to a section machine for performing drilling and cutting on a section steel made of, for example, an angle, a flat bar, and an H section steel. .

[0002]

2. Description of the Related Art Conventionally, a section steel processing machine 101 as shown in FIG. 6 has been known as a section steel processing machine for punching and cutting a section steel. That is, in FIG. 6, the section steel processing machine 101 includes a processing machine main body 103, and left and right (up and down in FIG. 6) of the processing machine main body 103.
On the upper side, a right punching unit 105 and a left punching unit 107 are provided.
In the center of the front in 03, the cutting unit 10
9 are provided.

[0003] The punching units 105 and 107 are for making a hole in a shaped steel, and the cutting unit 109 is for making a cut in a shaped steel. A feed table 111 is disposed behind the processing machine main body 103 (left side in FIG. 6), and the feed table 1
A plurality of rotatable material feed rollers 113 are supported on the base 11 at appropriate intervals in the front-rear direction.

A transport table 115 is disposed in front of the processing machine body 103 (to the right in FIG. 6), and a plurality of rotatable transport rollers 117 are disposed on the transport table 115 at appropriate intervals in the front-rear direction. Is supported.
Further, a fixing gripper 119 is provided at a rear portion of the processing machine main body 103 to press and fix, for example, an angle as a shape steel from above to a reference surface of a V-shaped processing reference SL (see FIG. 7).

[0005] As shown in FIG. 7, in order to clamp, for example, a flat bar W as a shaped steel, a side edge of the flat bar W is formed at the rear portion of the processing machine main body 103.
The flat bar retainer 121 for pressing and fixing to one of the reference surfaces in the shaping reference SL is provided with the fixed gripper 11.
9 or separately from the fixed gripper 119.

According to the above-described structure, the shaped steel to be processed is placed on the feeding roller 113 in the feeding table 111, and the tail end of the shaped steel is clamped by a feeding device (not shown) to feed the steel. , The shaped steel is the processing machine body 103
Is positioned at the processing position.

[0007] Next, when the shape steel is angle W,
In a state where the angle W is fixed by the fixing gripper 119, a punching process is performed by the punching units 105 and 107, and a cutting process is performed by the cutting unit 109. The processed angle W is transported on transport rollers 117 on the transport table 115.

On the other hand, when the steel bar is a flat bar W,
In a state where the flat bar is fixed by the flat bar holder 121, for example, punching is performed by the punching unit 105, and cutting is performed by the cutting unit 109, and the flat bar is conveyed.

FIG. 8 shows the flat bar retainer 121.
There are two types, a hinge type flat bar holder 123 as shown in FIG. 9 and a cylinder direct type flat bar holder 125 as shown in FIG. 9, both of which are provided on the work loading side (left side in FIG. 6) from the punching unit 105. ing.

Referring to FIG. 8, the hinge type flat bar holder 123 is used in place of the above-mentioned fixed gripper 119, and is located above the section steel to fix the support frame 127 to the processing machine main body 103. One end of a clamp arm 129 is pivotally mounted on a hinge 127a below the support frame 127, and the other end of the clamp arm 129 is provided so as to rotate downward.
At the other end of No. 9, the side edge of the flat bar W is V-shaped
A clamp portion 131 is provided for clamping to one reference surface of L. At the approximate center of the clamp arm 129, a tip of a rod of a cylinder 133 that can move forward and backward is supported. The cylinder 133 is supported by the support frame 127.

Referring to FIG. 9, the cylinder direct type flat bar press 125 is provided separately from the fixed gripper 119, and the flat bar W is directly fixed to the flat bar W at the tip of the rod of the cylinder 135 fixed to the processing machine body 103. The side edge is pressed against one reference surface of the V-shaped processing reference SL.

[0012]

In the above-described conventional section steel working machine 101, the fixed gripper 119 and the flat bar presser 12 are used for drilling a normal section steel.
1. Since the section steel is clamped by 1, normal punching is performed, but when drilling near the tail end of the section steel, FIG.
As shown in (1), punching is performed in cooperation with the punch P and the die D of the punch unit. However, since the clamp cannot be performed by the fixed gripper 119 or the flat bar holder 121, the hold-down clamp 137 located at a position away from the punching unit. (FIG. 6) alone.

In particular, for example, a flat bar W as a shaped steel
In the above, since the shape steel itself is weak in strength, sufficient clamping cannot be performed only by the hold-down clamp 137 located at a position away from the punching unit. Therefore, the dimensional accuracy from the side edge of the flat bar W to the drilling position (Gauge dimensional accuracy) becomes unstable.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and has as its object to improve the processing dimensional accuracy at the time of drilling the tail end of a flat bar, especially in the case of a flat bar. An object of the present invention is to provide a steel processing machine.

[0015]

According to a first aspect of the present invention, there is provided a section steel working machine according to the first aspect of the present invention, comprising: A drilling unit for processing a shaped steel positioned at a position is provided, and a clamp arm for clamping the shaped steel is provided on a work loading side and a work unloading side in the drilling unit. It is.

Therefore, when drilling near the tail end of the shaped steel, even if the tail end of the shaped steel comes off from the clamp arm on the work loading side, the clamp arm on the work unloading side moves the vicinity of the tail end of the shaped steel. Since the clamping is performed, even if the shape steel itself such as a flat bar is weak in terms of strength, drilling with good dimensional accuracy such as gauge dimensions is performed.

According to a second aspect of the present invention, there is provided a section steel working machine,
2. The machine according to claim 1, wherein a grip portion for clamping a side edge of the section steel is provided on one end side of the clamp arm on one of the reference surfaces of the V-section machining reference, and the clamp arm is connected via a hinge. A rotating drive means is provided on the other end side of the clamp arm so as to rotate the clamp arm.

Therefore, the clamp arm is rotated via the hinge by the rotation drive means, so that the clamp arm is rotated according to the width of the shape steel, particularly the flat bar, and the gripping portion at the tip of the clamp arm is shaped. The side edge of the steel can be pressed and separated from one reference surface in the V-shaped processing reference.

According to a third aspect of the present invention, there is provided a section steel working machine.
3. The steel shape processing machine according to claim 1, wherein the two clamp arms provided on the workpiece loading side and the workpiece transporting side in the drilling unit are integrally provided.

Therefore, the two clamp arms integrally connected are rotatable by one rotation driving means, so that the side edges of the shaped steel are V-shaped by the gripping portions at the tips of the two clamp arms. Simultaneously press against and separate from one reference plane in the reference.

According to a fourth aspect of the present invention, there is provided a section steel working machine,
The section steel processing machine according to claim 1, 2, or 3, wherein the section steel is a flat bar.

Therefore, when the steel bar is a flat bar, the clamp arm on the work take-out side clamps the vicinity of the tail end of the flat bar even if the tail end of the flat bar comes off the clamp arm on the work carry-in side. ,
Good drilling is performed.

[0023]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of a section steel working machine of the present invention will be described with reference to the drawings, taking a general section steel working machine as an example.

Referring to FIGS. 3, 4 and 5, for example, a section steel processing machine 1 according to the present embodiment includes a processing machine main body 3, and the processing machine main body 3 has an upright base 5
And a punching unit 7, a cutting unit 9, a fixed gripper 11, and a clamp device 13 as a flat bar holder provided on the base 5.

The punching unit 7 is provided with punching units 15 and 17 on both the left and right sides of the processing machine body 3 in the front-rear direction (the left-right direction in FIG. 3).

The cutting unit 9 is a unit for cutting a shaped steel, and is disposed in front of the processing machine main body 3 (right side in FIG. 3), that is, in front of the punching unit 17 in the embodiment of the present embodiment. The cutting unit 9 is additionally provided with a hold-down clamp 19 for pressing and fixing the section steel from above to a reference surface of a V-shaped processing reference SL (see FIG. 1).

The fixed gripper 11 presses and fixes, for example, an angle W as a shaped steel from above to a reference surface of a V-shaped processing reference SL, and is fixed to the rear (left side in FIG. 3) of the processing machine body 3, that is, a book. In the example of the embodiment, it is arranged behind the punching unit 15.

The clamp device 13 clamps and fixes the side edge of, for example, a flat bar W as a shaped steel to one of the reference surfaces of the V-shaped working reference SL. In the example of the present embodiment, the punching unit 15 is arranged on the work loading side and the work unloading side.

More specifically, referring to FIGS. 1 and 2, the clamp device 13 includes two clamp arms 21 which are integrally disposed via a hinge 23 before and after the punching unit 15 and below the V-shaped machining reference SL. It is arranged rotatably.

At the tips of the two clamp arms 21, the side edges of the flat bar W placed at the processing position are
A grip portion 25 for clamping is provided on one of the reference surfaces of the shaping reference SL, and the rear ends of the two clamp arms 21 are integrally connected and fixed by a connecting member 27. The center of the two clamp arms 21 is moved through the hinge 23 to the processing machine body 3.
Is provided rotatably on a lower frame 29 (an L-shaped lower frame 29 described later) at a position below.

The rear end of the connecting member 27 extending rearward from the rear end of the clamp arm 21 is connected to a cylinder 31 (means for rotating the clamp arm) supported by a lower frame 29 of the processing machine body 3. ing.

Therefore, the operation of the cylinder 31 causes
One clamp arm 21 integrally rotates according to the width dimension of the flat bar W, and the two clamp arms 21 on the work loading side and the work unloading side of the punching unit 15 as shown by a two-dot chain line in FIG. The side edge of the flat bar W is simultaneously clamped to one reference surface of the V-shaped processing reference SL by the grip 25.

A roller table 33 is disposed at the rear of the processing machine body 3 in the material feeding direction, that is, at the work loading side (left side in FIG. 3), extending in the front-rear direction. A plurality of rollers 35 are rotatably supported on the roller table 33 at appropriate intervals in the front-rear direction. The section steel W is placed on the roller 35. Moreover, the roller table 3
A guide rail 37 extending in the front-rear direction is integrated on one side (upper side in FIG. 3) of the sheet No. 3, and a material feeding device (not shown) movable in the front-rear direction is provided on the guide rail 37. .

With the above construction, the flat bar W is placed on the rollers 35 of the roller table 33 and the flat bar W is fed to the processing machine body 3 by the feeder, and the fixed gripper 11 is lowered to flatten the flat bar W. The tip of the bar W is abutted against the fixed gripper 11 and positioned.

Next, after the fixed gripper 11 is raised, the desired length of the flat bar W is fed to the processing position of the processing machine body 3 and stopped. Then, the cylinder 31 of the clamp device 13 is operated, and the grip portion 2 of the clamp arm 21 is operated.
At 5, the side edge of the flat bar W is pressed against one reference surface of the V-shaped processing reference SL, and the flat bar W is clamped.

By mounting punches P and dies D corresponding to the hole diameters to be drilled on the punching units 15 and 17, desired drilling is performed on the flat bar W. Next, the flat bar W is cut by the cutting unit 9.

Since the punching units 15 and 17 have exactly the same structure, the structure of the punching unit 15 will be described. As shown in FIG. 1, an L-shaped lower frame 29 is provided. Frame 29
A holder 39 is integrally provided on one surface of the punch holder 41. A punch holder 41 on which a punch P and a die D are mounted is provided on the holder 39.
Is set.

A punching cylinder 43 is mounted on the other surface of the lower frame 29, and a ram 45 is mounted on the punching cylinder 43.

With the above structure, the flat bar W is connected to the die D
The ram 45 strikes the punch P by placing it on the upper surface and operating the punching cylinder 43, and the flat bar W is punched by the cooperation of the punch P and the die D.

When drilling near the tail end of the flat bar W, the tail end of the flat bar W is
Since the flat bar W is clamped by the clamp arm 21 on the work carry-out side even when the flat bar W is disengaged from the clamp arm 21 on the work carry-in side in 3, it is possible to perform good drilling with stable gauge dimensional accuracy.

The present invention is not limited to the above-described embodiment, but can be implemented in other modes by making appropriate changes. In the example of the present embodiment, the clamp device in which the two clamp arms on the work loading side and the work unloading side of the punching unit are integrally connected is shown. However, the two clamp arms on the work loading side and the work unloading side are independent of each other. Alternatively, it may be a shaped steel working machine provided with a clamp device operated by a rotation drive means such as a cylinder or another shaped steel working machine.

The position of the hinge for supporting the clamp arm is desirably located substantially at the center of the clamp arm, but one end of the clamp arm is supported by the hinge.
It is also possible to provide a gripping portion of a shaped steel at the other end of the clamp arm and operate the clamp arm at a middle position of the clamp arm by a rotation driving means such as a cylinder.

[0043]

As will be understood from the above embodiment, according to the first aspect of the present invention, when drilling near the tail end of the shaped steel, the tail end of the shaped steel is formed by the work. Even if it comes off from the clamp arm on the loading side, the clamp arm on the work unloading side can clamp the vicinity of the tail end of the section steel, so even if the section steel itself such as a flat bar is weak in terms of strength, gauge dimensions etc. Drilling with good dimensional accuracy can be performed.

According to the second aspect of the present invention, the hinge of the clamp arm can be positioned below the V-shaped machining reference, so that the hinge is located at the narrow portion before and after the punching unit.
One clamping arm can be provided. Also, since the clamp arm is rotated via the hinge, the side edge of the shaped steel can be pressed and separated from one of the reference surfaces in the V-shaped machining reference by the gripping portion at the tip of the clamp arm.

According to the third aspect of the present invention, the two clamp arms connected integrally can be freely rotated by one rotation driving means, so that the cost can be reduced and the gripping portions at the tips of the two clamp arms can be removed. At the same time, the side edges of the shaped steel can be pressed against the V-shaped working reference and can be separated at the same time.

According to the fourth aspect of the present invention, when the steel bar is a flat bar, even if the tail end of the flat bar is disengaged from the clamp arm on the work carry-in side, the clamp arm on the work carry-out side has the flat bar. Since the vicinity of the tail end is clamped, good drilling can be performed.

[Brief description of the drawings]

FIG. 1 shows an example of an embodiment of the present invention, and is an enlarged view showing details of a clamp device for a shaped steel such as a flat bar in a shaped steel working machine.

FIG. 2 is a sectional view of a principal part taken along line II-II in FIG.

FIG. 3 shows an example of an embodiment of the present invention and is a plan view of a section steel working machine.

FIG. 4 is a right side view of FIG. 3;

FIG. 5 is a front view of FIG. 3;

FIG. 6 is a plan view showing a conventional steel shape processing machine.

FIG. 7 is an explanatory view of a state in which drilling near the tail end of a section steel is performed by a conventional section steel processing machine.

FIG. 8 is a side view showing a hinge type flat bar press in a conventional section steel working machine.

FIG. 9 is a side view showing a cylinder direct type flat bar press in a conventional section steel working machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Shaped steel processing machine 3 Processing machine main body 7 Punching unit (drilling processing unit) 9 Cutting unit 11 Fixed gripper 13 Clamping device 15 Left punching unit 17 Right punching unit 21 Clamp arm 23 Hinge 25 Gripping part 27 Connecting member 31 Cylinder (clamp) Arm rotation drive means) 41 Punch holder

Claims (4)

[Claims] 1. A drilling unit for processing a shaped steel positioned at the processing position is provided on a processing machine body having a V-shaped processing reference for positioning the shaped steel at the processing position. A shaped steel processing machine comprising a clamp arm for clamping the shaped steel on a work loading side and a work unloading side. 2. A clamp for clamping a side edge of the shaped steel on one end side of a clamp arm on one reference surface of the V-shaped machining reference, and the clamp arm is rotated through a hinge. 2. The machine according to claim 1, wherein a rotation driving means is provided on the other end of the clamp arm. 3. The machine according to claim 1, wherein the two clamp arms provided on the workpiece carry-in side and the workpiece carry-out side of the drilling unit are integrally provided. 4. The machine according to claim 1, wherein said steel bar is a flat bar.