JPH084934B2 - Angle steel processing equipment and supporting equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a processing device and supporting device for angle steel, and more particularly to a processing device capable of cutting or marking angle steel used as a hull structural material, and a special clamp. The present invention relates to a support device on which angle steel can be placed without need.

[0002]

2. Description of the Related Art In a transverse frame, a longitudinal frame, a beam, a stiffener or the like as a hull structural member, unequal angle steel, equilateral angle steel or other steel materials are used. The angle steel is often welded to a length corresponding to the intended hull, which may result in a groove cut at the longitudinal end. Further, a plurality of drain holes and scallops are cut in the longitudinal direction of the web depending on the application site.

Generally, in the welding process, an automatic welding device is used for the purpose of labor saving and elimination of welding work. When welding is performed using an automatic welding device, it is required to form a groove with high accuracy at the joint. When forming a groove that can be applied to an automatic welding apparatus from a web of angle iron to a flange, it is necessary to control the attitude of the cutting torch intricately, especially at a corner portion where the web is transferred to the flange.

However, since the thickness of the portion to be cut changes in the portion where the angle steel web transitions to the flange, it is necessary to change the inclination angle of the cutting torch and rotate it simultaneously. As described above, there is no device capable of simultaneously inclining and turning the cutting torch, and the worker manually cuts using the hand torch. For this reason, even in the next welding step, the automatic welding device cannot be used and manual welding is performed.

Techniques for realizing the above-described groove cutting include a teaching playback type robot and a technique disclosed in Japanese Patent Publication No. 3-12995 developed by the applicant of the present application. In the former technique, the operating procedure of the cutting torch is memorized and reproduced by a skilled operator. The latter technique relates to a manipulator-type numerically controlled robot, in which the groove is cut from a chevron steel web to a flange with a single cutting torch by performing simultaneous 5-axis control. With each of these techniques, it is possible to form an accurate groove at the end of the angle steel and cut a drain hole, a scallop, or the like on the web surface with high accuracy.

When the angle steel is cut, the angle steel is placed on the surface plate. Such a surface plate is configured such that the mounting surface is in agreement with the horizontal surface.

[0007]

However, each of the above robots has a complicated device structure and requires high accuracy in each component. In particular, in a numerical control robot, the control contents are complicated and the device cost is high, so it is not easy to introduce. For this reason, the present situation is that cutting and welding are performed manually, and there is a demand for the development of a device that can form a groove at a lower cost and with higher accuracy.

Further, since the mounting surface of the surface plate is constructed as a horizontal surface, when the shaped steel is mounted on this surface plate, it is necessary to clamp either the web or the flange, and the clamping work requires manpower. There is a problem.

An object of the present invention is to provide a chevron processing device capable of forming a groove with high accuracy and cutting a required shape on a web surface with high accuracy and reducing the device cost, and a special clamp. And to provide a support device that does not require it.

[0010]

In order to solve the above-mentioned problems, a typical angle steel machining apparatus according to the present invention is a mounting surface inclined at a predetermined angle with respect to a horizontal plane and an end surface orthogonal to the mounting surface. And a horizontal rail arranged parallel to the placing surface and a vertical rail arranged in a direction orthogonal to the horizontal rail, and laid along the longitudinal direction of the support apparatus. A main body frame movably mounted on a traveling rail, a web cutting torch that is movably mounted on the lateral rail and cuts a chevron steel web, and a tilting means for inclining the web cutting torch and a web cutting torch. A first carriage having swiveling means for controlling the height and a height control means for controlling the distance between the angle steel web and the web cutting torch to a constant value; and a flange for the angle steel which is movably mounted on the vertical rail. A flange cutting torch for cutting, a tilting means for tilting the flange cutting torch, a turning means for turning the flange cutting torch, and a height control means for controlling the distance between the angle steel flange and the flange cutting torch to a constant value. It comprises a second carriage provided and a control device for controlling the movement and posture of the web cutting torch and the flange cutting torch.

A supporting device according to the present invention is a supporting device for mounting a shaped steel having at least two intersecting sides, and a mounting surface on which a web of shaped steel is mounted is inclined at a predetermined angle with respect to a horizontal plane. And the end face on the top side in the width direction of the mounting surface is formed at an angle at which the shaped steel flange can abut.

[0012]

According to the above-mentioned angle steel processing device (hereinafter referred to as "processing device"), the angle steel web and the flange are separately cut by the two cutting torches of the web cutting torch and the flange cutting torch, respectively. It is possible to form a groove with high precision at the end portion and cut a drain hole, a scallop or the like on the web surface, and reduce the device cost as compared with a robot.

That is, by controlling the moving direction and moving speed of the main body frame and the first carriage by the control device, it is possible to cut the drain hole, the scallop, etc. in the web of the angle steel by the web cutting torch.

When the groove is cut at the longitudinal end of the angle steel, the web and the web are cut by controlling the inclination angle and swivel angle of the torch while controlling the planar movement of the web cutting torch. It is possible to cut the groove up to the corner with the flange. After cutting the portion from the web to the flange with the web cutting torch as described above, the flange cutting torch is tilted and swung to face the cutting interruption position by the web cutting torch at the corner between the web and the flange. , Then, while controlling the tilt angle and turning angle of the flange cutting torch,
The flange can be groove-cut by controlling the planar movement of the carriage along the flange surface. In this way, the groove can be cut at the longitudinal end portion of the angle steel by combining the web cutting torch and the flange cutting torch.

At the time of cutting the angle steel, even if the angle steel is placed on a placement surface having a predetermined gradient with respect to the horizontal plane, the height control means provided in the first and second carriages can be used to control the web and the web. The distance between the cutting torch and the distance between the flange and the flange cutting torch can be maintained at constant values.

When the web is cut by the web cutting torch and the flange is cut by the flange cutting torch, the number of simultaneous control axes of these cutting torches is four. Therefore, the configuration of the control device is simplified and the device cost can be reduced.

According to the above-mentioned supporting device, it is possible to place the shaped steel having two intersecting sides without clamping and to define the longitudinal position of the shaped steel. That is, one side (web) of the shaped steel is placed on a placing surface having a gradient of a predetermined angle with respect to the horizontal plane, and the other side (flange) is in the width direction of the placing surface and the end surface on the top side. Contact with the supporting device, the weight of the shaped steel acts on the mounting surface of the supporting device and the end surface on the top side of the mounting surface at the same time, and the contact friction occurs between the web surface and the mounting surface and between the flange surface and the end surface. Occurs. Therefore, the shaped steel placed on the supporting device can maintain a stable posture and does not require a special clamping device.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the above processing device and supporting device will be described with reference to the drawings. FIG. 1 is a front view of a processing apparatus A according to the first embodiment, FIG. 2 is a view for explaining a supporting device, FIG. 3 is a block diagram of a control system, and FIG. 4 is a groove cutting at a longitudinal end portion of an angle steel. FIG. 5 is a perspective view illustrating the posture of the cutting torch when performing the cutting, and FIG. 5 is a three-sided view illustrating the posture of the web cutting torch when performing the groove cutting on the longitudinal end portion of the web.

1 and 2, the pair of rails 1 are x
A gate-shaped main body frame 2 is laid on the rails 1 in parallel along the direction. Further, a support device 4 for mounting the angle steel 3 is arranged between the pair of rails 1 and parallel to the rails 1. The body frame 2
X motor 2a is provided in the
Is configured to rotate in a desired direction so that the main body frame 2 can be moved along the rail 1 in the x direction.

As shown in FIG. 2, the supporting device 4 has a plurality of steel plates 5 arranged side by side in a direction orthogonal to the laying direction of the rail 1, and each of the steel plates 5 has rigidity so that this state can be maintained. It is configured by being attached to the frame. A mounting surface 4a having an inclination of a predetermined angle with respect to the horizontal plane is formed on the upper part of the supporting device 4, and a flange of the angle steel 3 can abut on the end surface 4b in the width direction of the mounting surface 4a and on the top side. Is formed. That is, the angle formed by the placing surface 4a and the end surface 4b is equal to the angle formed by the web 3a of the angle steel 3 and the flange 3b.

Therefore, when the angle steel 3 is placed on the supporting device 4 with the flange 3b facing downward and the flange 3b is biased toward the supporting device 4, the web 3a is placed on the mounting surface 4a and 3b contacts the end surface 4b to maintain the mounting posture. In addition, the mounting surface 4a and the end surface 4b of the supporting device 4
Are arranged parallel to the rail 1. Therefore, by mounting the angle steel 3 on the support device 4, the web 3a and the flange 3b of the angle steel 3 can be positioned parallel to the rail 1. The inclination angle of the mounting surface 4a of the supporting device 4 is not particularly limited.

In the support device 4 constructed as described above, the weight of the mounted angle steel 3 acts on the mounting surface 4a and the end surface 4b, and between the web 3a and the mounting surface 4a and between the end surface 4b and the flange. Contact friction occurs with the 4b. For this reason, the angle steel 3 placed without using a special clamp device maintains the placement posture by its own weight. In addition, as the supporting device 4, the mounting surface 4a has a slope of a predetermined angle with respect to a horizontal plane,
It is necessary that the angle between the mounting surface 4a and the end surface 4b be equal to the angle between the web 3a and the flange 3b of the angle steel 3, and which frame the steel plate 5 is attached to constitutes the supporting device 4. The configuration is not particularly limited, and it can be configured so that it can move as necessary.

A mounting surface 4 of the supporting device 4 is provided on the main body frame 2.
A horizontal rail 6 having a slope equal to that of a is provided, and a vertical rail 7 orthogonal to the horizontal rail 6 is provided on the same side as the end surface 4b of the support device 4 of the horizontal rail 6.
Therefore, the horizontal rails 6 are arranged parallel to the mounting surface 4a in the direction (y direction) orthogonal to the rails 1, and the vertical rails 7 are arranged parallel to the end faces 4b in the vertical direction (z direction) with respect to the rails 1. It is set up.

On the horizontal rail 6, a horizontal carriage 8 which is a first carriage movable along the horizontal rail 6 in the y direction.
Is installed. On the side rail 6, y motor 9
a, A screw rod 9b that is screwed with a nut (not shown) fixed to the traverse carriage 8 is attached. Therefore, by rotating the y motor 9b, it is possible to move the traverse carriage 8 in parallel with the mounting surface 4a of the supporting device 4.

The vertical rail 7 has a vertical carriage 10 which serves as a second carriage movable in the z direction along the vertical rail 7.
Is installed. The vertical rail 7 has a z motor 11
a, A screw rod 11b that is screwed with a nut (not shown) fixed to the vertical carriage 10 is attached. Therefore, it is possible to move the vertical carriage 10 in parallel with the end surface 4b of the supporting device 4 by rotating the z motor 11a.

The traverse carriage 8 is provided with an elevating saddle 12 which can be raised and lowered in a direction orthogonal to the traverse direction of the carriage 8 (a direction in which the carriage 3 is moved toward and away from the web 3a). The elevating saddle 12 opens the web 3a. Attached is a torch block 14 having a web cutting torch 13 for cutting ahead.

A web cutting torch 13 is attached to the traverse carriage 8.
Height control means for maintaining a constant distance (height) from the surface of the web 3a is arranged. This height control means is a lift motor 15 attached to the traverse carriage 8.
a, a lifting saddle driven by a lifting motor 15a
A screw rod 15b that is screwed with a nut (not shown) fixed to
It is composed of a height sensor 16 provided on the lifting saddle 12.

The height sensor 16 is fixed to the elevating saddle 12 in a fixed positional relationship with the web cutting torch 13, and outputs a signal corresponding to the distance between the sensor 16 and the web 3a to transmit it to the control unit 20 described later. To do. Then, the lifting motor 15 receives the signal from the height sensor 16 so that the control unit 20 matches the preset signal value with the output value.
By generating a drive signal for a, the height of the web cutting torch 13 is maintained constant. In this embodiment, the output value of the height sensor 16 constantly changes while the web 3a is being cut, and the lifting motor 15a is driven so as to return the output value to a preset signal value. It maintains a height of 13.

As the height sensor 16, for example,
An air sensor that detects the back pressure of compressed air injected from the nozzle to detect the distance, a laser sensor that emits laser light and detects reflected light to detect the distance, and a magnetic sensor that detects magnetism to detect the distance. Etc. can be used.

The torch block 14 is a web cutting torch 13
Inclining according to the groove angle to be cut,
The corner portion from the web 3a to the flange 3b has a function of turning while changing the inclination angle of the web cutting torch 13. This torch block 14 is a lifting saddle
It is attached to a bracket (not shown) fixed to 12, and is configured so that when a turning motor (not shown) is rotated, the web cutting torch 13 can be rotated about the rotation axis.

The tilting means for tilting the web cutting torch 13 includes, for example, a fan-shaped tilting rail, and by moving the web cutting torch 13 along the tilting rail,
The web cutting torch 13 has a mechanism configured to set the inclination angle of the torch 13 or has a plurality of links and an arm provided with a torch holder, and the links are rotated about a rotation axis. It is possible to use a mechanism or the like configured to set the inclination angle of the. In this embodiment, the torch block 14 is provided with a plurality of links 14a,
An inclination angle setting mechanism configured so that the link 14a can be driven by an inclination angle setting motor (not shown) is used.

The vertical carriage 10 has the same structure as the horizontal carriage 8 described above. That is, the elevating saddle 12 is mounted on the vertical carriage 10, and the torch block 14 is attached to the elevating saddle 12. The elevating saddle 12 is configured to be movable in a direction orthogonal to the longitudinal direction of the longitudinal carriage 10 (a direction in which it separates from and contacts the flange 3b), and the flange 3b of the torch block 14 is cut at the groove. A flange cutting torch 17 is attached.

Reference numeral 18 in the drawing denotes a marking torch for marking a welding line or a cutting line for welding other members to the angle steel 3, and this marking torch 18 is used for raising and lowering the saddle 12 of the traverse carriage 8. The vertical carriage 10 is attached to both the lifting saddles 12 or to either one of them.

Next, the control system of the processing apparatus A will be described with reference to FIG. In the figure, the part surrounded by the one-dot chain line shows the control system for cutting the web 3a by the transverse carriage 8, and the part surrounded by the two-dot chain line shows the control system for cutting the flange 3b by the longitudinal carriage 10. There is.

The control unit 20 includes a calculation unit 20a, a RAM 20b, and an R unit.
It is configured as a computer numerical control device (CNC device) including an OM20c. Processing device A in ROM 20c
The operation program, the basic figure program, and the like are written. The RAM 20b temporarily stores cutting conditions such as the thickness, shape, cutting speed, and groove angle of the web 3a and the flange 3b in the angle steel 3 which are input by the input device 21 such as a keyboard.

The driver 22 responds to a drive signal from the control unit 20 to cut the web 3a at the groove.
Link of the x motor 2a provided on the vehicle, the y motor 9a of the traverse carriage 8, the swing motor 23 for turning the torch block 14 provided on the traverse carriage 8, and the torch block 14.
The tilt angle setting motor 24 for setting the tilt angle of the web cutting torch 13 is driven by rotating 14a.

The driver 25 responds to a drive signal from the control unit 20 when cutting the flange 3b in the groove, in accordance with a drive signal from the control unit 20.
a, a z motor 11a of the vertical carriage 10, a turning motor 26 for turning the torch block 14 provided on the vertical carriage 10, and an angle setting motor 27 for setting the inclination angle of the flange cutting torch 17.

The display 28 displays data input by the input device 21, basic figures written in the ROM 20c, operating conditions of the processing apparatus A, and the like. Further, 29 is a limit switch provided on the vertical carriage 10, which contacts the horizontal carriage 8 or the lifting saddle 12 to generate a signal, which prevents a collision between the vertical carriage 10 and the horizontal carriage 8 and causes a flange. Cutting torch 17
And the web 3a are detected. still,
30 is an interface.

Next, a procedure for performing the groove cutting on the longitudinal end portion of the angle steel 3 by the processing apparatus A configured as described above will be described with reference to FIGS. 4 and 5.

As shown in FIG. 5B, the angle steel 3 used as a hull member is often an unequal angle angle steel in which the length of the web 3a and the length of the flange 3b are different, as shown in FIG. The thickness of the web 3a and the thickness of the flange 3b are also different. Also, when the longitudinal end of the angle steel 3 is groove-cut and welded to another member, the groove shape must be a Y-groove and the lower end 3c of the groove surface must be formed in a straight line. .

A description will be given of the case where the groove is cut at the end of the angle steel 3 in the longitudinal direction. Here, α is the groove angle, the thickness t of the web 3a, the thickness T of the flange 3b, the radius r of the curved surface on the inner surface of the angle steel 3, and the center O of the radius r. Prior to the start of cutting for the angle steel 3, the above-mentioned values, the length of the web 3b, the cutting speed for the web 3a, the flange 3
Values such as the length of b and the cutting speed for the flange 3b are input to the control unit 20 by the input device 21.

When the web cutting torch 13 is used to cut a portion having a uniform thickness from the end P of the web 3a to the point Q and a portion having a different thickness from the point Q to the point R, the torch block 14 of the traverse carriage 8 is cut. The tilt angle setting motor 23 provided in the above is rotated to set the tilt angle of the web cutting torch 13 to the angle α, and the height sensor 16 is operated to rotate the lifting motor 15a to bring the lifting saddle 12 closer to the web 3a. A detection signal from the height sensor 16 is transmitted to the control unit 20 as the lifting saddle 12 approaches the web 3a, and the lifting saddle 12 maintains a distance from the web 3a when the value reaches a preset value.

After the height sensor 16 keeps the distance of the web cutting torch 13 from the web 3a constant, the y-motor 9a is rotated to move the traverse carriage 8 to the flange 3.
The position of the point R is detected by traversing in the direction of b. This detection is performed by moving the traverse carriage 8 while operating the height sensor 16 and detecting the position where the output signal of the height sensor 16 changes abruptly. Then, the traverse carriage 8 is traversed in the direction opposite to the flange 3b by a distance corresponding to the length of the web 3a. As a result, the web cutting torch 13 is set at the position of the end P of the web 3a. Next, the web cutting torch 13 is ignited with a preheating flame, and cutting oxygen is ejected, so that the traverse carriage 8 is again moved to the flange 3b.
In the direction of.

A web cutting torch 13 generated from the height sensor 16 as the traverse carriage 8 traverses in the y direction.
The lifting motor 15a rotates in response to a signal indicating that the distance from the web 3a has changed, and the distance between the web cutting torch 13 and the web 3a is always maintained at a constant value.
A groove is cut on the web 3a.

When the web cutting torch 13 reaches the point Q, the extension line of the torch 13 coincides with the point O. Further, the thickness of the angle steel 3 to be cut changes in the direction of increasing from the point Q to the point R. Therefore, if the web cutting torch 13 is cut from the point Q to the point R in a state of being inclined at the angle α, the groove shape changes as the thickness of the angle steel 3 increases, and the groove shape It is impossible to keep the lower end 3c linear. That is, between the point Q and the point R of the web 3a,
By controlling the attitude of the web cutting torch 13 so that the extension line is always directed to the point O, it is possible to form the lower end 3c of the groove linearly.

Since the web cutting torch 13 has an inclination angle of the angle α, the torch 13 is turned about the turning axis and, at the same time, tilted in the direction of increasing the angle α, so that the web cutting torch 13 The posture can be controlled so that the extension line is always directed to the point O. The turning angle of the web cutting torch 13 and the amount of change in the tilt angle associated with the turning of the torch 13 are calculated by the control unit 20 according to the shape of the angle steel 3 and the groove angle α, and the tilt angle is set according to the calculation result. The driver generates the drive signals of the motor 23 and the swing motor 24.
22 is transmitted to the torch block 14 by rotating these motors 23 and 24, and at the same time the link 14 is rotated.
The inclination angle of the web cutting torch 13 is changed by rotating a.

When the groove cutting to the intersection R between the web 3a and the web 3a and the flange 3b is completed by the web cutting torch 13 as described above, the cutting oxygen ejected from the web cutting torch 13 is stopped. At the same time, the preheating flame is extinguished, and the transverse carriage 8 is held at the cutting end position.

Then, the z motor 11a is rotated to raise the vertical carriage 10. A limit switch provided on the vertical carriage 10 as the vertical carriage 10 rises.
When 29 makes contact with the traverse carriage 8 or the lifting saddle 12 to generate a signal, the z motor 11a stops and the traverse carriage 10 holds the raised position, and at the same time, the y motor 9a rotates to cause the traverse carriage 8 to move to the web 3a. And retreat in the direction of the end P of the. When the limit switch 29 contacts the traverse carriage 8 or the lifting saddle 12, the positional relationship between the surface of the web 3a and the flange cutting torch 17 is uniquely set.

Next, the turning motor 27 provided on the lifting saddle 12 of the vertical carriage 10 is rotated, and at the same time, the tilt angle setting motor 27 is rotated to rotate the flange cutting torch 17 about the turning axis and at the same time, the tilt angle is set. And the vertical carriage 10 is raised so that the flange cutting torch 17 is aligned with the position and posture of the web cutting torch 13 at the point R. Then, the flange cutting torch 17 is operated to start cutting from the point R of the angle steel 3 to the flange 3b.

The attitude control for the flange cutting torch 17 in the process of cutting the flange 3b is substantially the same as the control for the web cutting torch 13 described above. That is, while the flange cutting torch 17 is rotated about the rotation axis between the point R and the point S, the inclination angle of the torch 17 is reduced to the angle α. After the flange cutting torch 17 finishes cutting up to the point S, the angle of inclination of the torch 17 is held at the angle α and the end portion T is cut to obtain the angle steel 3
The groove cutting for the web 3a and the flange 3b is completed.

The attitude control of the web cutting torch 13 and the flange cutting torch 17 from the point Q to the point R and from the point R to the point S changes as the cutting progresses, as shown in FIG. 5 (a). The control may be performed such that the QR and RS are divided into a plurality of sections as shown in FIG.

FIG. 6 is a front view of the processing apparatus B according to the second embodiment, and FIG. 7 is a sectional view taken along the line EE of FIG. In the present embodiment, the same parts or parts having the same functions as those in the first embodiment described above are designated by the same reference numerals and the description thereof will be omitted.

In the processing apparatus B according to this embodiment, when the longitudinal end portion of the angle steel 3 is groove-cut and the processing line consisting of a straight line or a curved line set in the longitudinal direction of the web 3a is cut, Height sensor 16 provided on the vertical carriage 10
By copying the surface of the flange 3b, the machining line can be cut with the flange 3b as a reference. According to this processing apparatus B, even if the angle steel 3 to be cut is distorted, the processing line is set to the flange 3b.
By setting as a reference, it is possible to perform accurate cutting without being affected by the strain of the angle steel 3.

The mounting surface 4 of the supporting device 4 is attached to the main body frame 2.
A copying rail 31 serving as a first lateral rail is fixed in parallel with a, and a copying carriage 32 is mounted on the copying rail 31. The horizontal rails 6 and the vertical rails 7 having the same structure as the first embodiment are fixed to the copying carriage 32. A horizontal carriage 8 that can traverse in the y direction is mounted on the horizontal rail 6, and a vertical carriage 10 that can traverse in the z direction is mounted on the vertical rail 7.

A motor for copying a predetermined position of the main body frame 2
A screw rod 33 to which a screw 33a is attached and which is screwed with a nut 33c attached to the scanning carriage 32 along the scanning rail 31.
b is arranged. Therefore, when the copying motor 33a is rotated, the copying carriage 32 moves in the y direction, and with this movement, the horizontal carriage 8 and the vertical carriage 10 move in the y direction. The copying motor 33a is a vertical carriage.
It is driven based on the output signal of the height sensor 16 provided in 10.

Next, a procedure for marking a machining line set in the x direction by the marking torch 18 while following the flange 3b of the angle steel 3 by the machining apparatus B configured as described above will be described. This procedure is web 3a
This is the same even when the web is cut by the web cutting torch 13.

First, the control unit 20 receives information on a machining line based on the flange 3b of the angle steel 3 and work information for marking the web 3a by the input device 21.
To enter. In the control unit to which the work information is transmitted, the control system is changed so that the scanning motor 33a is driven by the output signal of the height sensor 16 provided in the vertical carriage 10.

Next, while operating the height sensor 16 provided on the vertical carriage 10, the copying motor 33a is rotated to move the copying carriage 32 so that the height sensor 16 approaches the flange 3b. And height sensor
When the distance between 16 and the flange 3b (height of the flange cutting torch 17) reaches a preset value, the copying motor 33
The movement of the scanning carriage 32 is stopped by stopping a.

Next, a lifting motor for the traverse carriage 8
15a is rotated and the height sensor 16 is operated to bring the lifting saddle 12 close to the web 3a, and the web cutting torch 13 (marking torch 18) is set to a preset height. Then, the traverse carriage 8 is moved in the direction of the flange 3b to detect the intersection (R) of the web 3a and the flange 3b, and then the traverse carriage 8 is moved to the side opposite to the flange 3b, and the marking torch 18 is placed on the machining line. Position it.

By the operations of the copying carriage 32 and the traverse carriage 8 as described above, the preparation for the marking work on the web 3a is completed. Next, the height sensor 16 provided on the vertical carriage 10 is operated and the height sensor 16 and the marking torch 18 provided on the horizontal carriage are operated, and the x motor 2a and the y motor 9a are operated at the same time in accordance with the information of the machining lines input. Web 3 by driving
It is possible to work with the marking torch 18 on a.

In the marking work process, the distortion generated in the direction of the flange 3b of the angle steel 3 is x in the body frame 2.
The height sensor 16 provided on the longitudinal carriage 10 detects the movement in the direction. That is, the vertical carriage
The output value of the height sensor 16 provided in the controller 10 is transmitted to the control unit 20, and when the output value changes, the control unit 20 causes the copying motor 33a to move toward the flange 3b and the height sensor 16 described above.
A drive signal is generated to maintain the distance between and at a preset value, and the copying motor 33a rotates based on this signal.

Therefore, the copying carriage 32 has the flange 3b.
Is moved in this strain direction in accordance with the strain, and the transverse carriage 8 is also moved in the same direction in accordance with this movement. Therefore, even if the angle steel 3 is distorted in the direction of the flange 3b, it is possible to process the processing line with the flange 3b as a reference regardless of the distortion.

FIG. 8 is a perspective view of a processing apparatus C according to the third embodiment. As shown in the figure, the processing device C is configured by disposing the supporting device 4 outside the rail 1, projecting the main body frame 2 in a cantilever shape, and providing the horizontal rail 6 on the projecting portion.

Even if the processing apparatus C is configured as described above, it is possible to cut the groove at the longitudinal end of the angle steel 3 as in the first and second embodiments, and the web 3a. X
It is possible to cut or mark in the direction.

[0065]

As described above in detail, in the angle steel machining apparatus according to the present invention, two cutting torches are used, and the inclination angle of the torch is controlled while controlling the planar movement of these cutting torches. By controlling the swivel angle and cutting the web and flange separately, it is possible to form a precise groove at the end of the angle steel in the longitudinal direction and cut drain holes or scallops on the web surface. I can.

When cutting the angle steel placed on the placing surface having a predetermined inclination with respect to the horizontal plane, the distance between the web and the web cutting torch and the flange are controlled by the height control means provided on the first and second carriages. The distance between the and the flange cutting torch can be maintained at a constant value, whereby a good cutting state can be maintained.

By configuring the web and the flange to be cut by different cutting torches, the number of simultaneously controlled axes is reduced, which simplifies the configuration of the control device and reduces the device cost.

According to the supporting apparatus of the present invention, it is possible to stably mount a shaped steel having two intersecting sides and to stabilize the direction of the mounted shaped steel without requiring a special clamp. Can be done. Therefore, as compared with a surface plate having a horizontal mounting surface, the angle steel can be mounted easily at low cost.

[Brief description of drawings]

FIG. 1 is a front view of a processing apparatus A according to a first embodiment.

FIG. 2 is a diagram illustrating a support device.

FIG. 3 is a block diagram of a control system.

FIG. 4 is a perspective view illustrating a posture of a cutting torch when performing groove cutting on an end portion in the longitudinal direction of angle iron.

FIG. 5 is a trihedral view for explaining the attitude of the web cutting torch when the groove cutting is performed on the longitudinal end portion of the web.

FIG. 6 is a front view of a processing device B according to a second embodiment.

7 is a cross-sectional view taken along the line EE of FIG.

FIG. 8 is a perspective view of a processing device C according to a third embodiment.

[Explanation of symbols]

 A, B, C Processing device 2 Main body frame 2a x Motor 3 Angle steel 3a Web 3b Flange 4 Support device 4a Mounting surface 4b End face 6 Horizontal rail 7 Vertical rail 8 Horizontal carriage 9a y Motor 10 Vertical carriage 11a z Motor 12 Lifting Saddle 13 Web cutting torch 14 Torch block 15a Lifting motor 16 Height sensor 17 Flange cutting torch 18 Marking torch 20 Control unit 23, 26 Swivel motor 24, 27 Inclination angle setting motor 31 Copy rail 32 Copy carriage 33a Copy motor

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Mikio Watanabe Koike Oxygen Industrial Co., Ltd. 3-35-16 Nishikoiwa, Edogawa-ku, Tokyo (56) References JP-A-58-202971 (JP, A) Japanese Patent Publication 52-44305 (JP, B2)

Claims (5)

[Claims] 1. A support device having a mounting surface inclined at a predetermined angle with respect to a horizontal plane and an end surface orthogonal to the mounting surface, a horizontal rail disposed in parallel with the mounting surface, and the horizontal rail. On the other hand, a main frame provided with vertical rails arranged in a direction orthogonal to each other and movably mounted on a traveling rail laid along the longitudinal direction of the supporting device, and movably mounted on the horizontal rail, and Web cutting torch for cutting the angle steel web, tilting means for tilting the web cutting torch, turning means for turning the web cutting torch, and height for controlling the distance between the angle steel web and the web cutting torch to a constant value A first carriage provided with a control means, a flange cutting torch movably mounted on the vertical rail and cutting a flange of chevron steel, and an inclining means and a flange for inclining the flange cutting torch. A second carriage having swiveling means for swiveling the cutting torch and height control means for controlling the distance between the angle steel flange and the flange cutting torch to a constant value, and movement of the web cutting torch and the flange cutting torch. And a control device that controls the posture, and a processing device for angle steel. 2. A support device having a mounting surface inclined at a predetermined angle with respect to a horizontal plane and an end surface orthogonal to the mounting surface, a first lateral rail arranged in parallel with the mounting surface, and A second horizontal rail movably arranged along the first horizontal rail and a vertical direction arranged in a direction orthogonal to the second horizontal rail and integrally formed with the second horizontal rail. A main body frame provided with a rail and movably mounted on a traveling rail laid along the longitudinal direction of the supporting device;
Of a web cutting torch, which is movably mounted on a horizontal rail of, and which inclines a web of chevron steel, an inclining means for inclining the web cutting torch, a swiveling means for swiveling the web cutting torch, the chevron steel web and the web cutting torch. A first carriage provided with height control means for controlling a distance to a constant value, a flange cutting torch movably mounted on the vertical rail and for cutting a flange of angle steel, and an inclining means for inclining the flange cutting torch. And a turning means for turning the flange cutting torch and a distance between the flange and the flange cutting torch when cutting the flange of the angle steel and a distance between the flange and the flange when cutting the angle steel web. And a height control means for moving the second horizontal rail and the vertical rail along the first horizontal rail. , Processing equipment angle iron which is characterized by having a control device for controlling the movement and orientation of the web cutting torch and flange cutting torch. 3. The control device tilts the web cutting torch according to the groove angle to cut a parallel portion of the web, and then changes the tilt angle of the web cutting torch and swivels the web cutting surface and the flange of the web. After cutting the web cutting torch that has been cut to the intersection with the surface of the web and further cutting from the end of the web to the intersection with the flange, retract the flange cutting torch to the surface of the web and the surface of the flange. The flange cutting torch is turned so as to face the intersection with and the angle of inclination is changed to cut to the parallel part of the flange, and then the parallel part of the flange is cut so that the main frame runs and the first carriage runs. Controlling the tilting means and the turning means provided on the first carriage and the traveling of the second carriage and the tilting means and the turning means provided on the second carriage The angle steel processing apparatus according to claim 1 or 2, wherein 4. The angle iron machining apparatus according to claim 1, wherein the first carriage and / or the second carriage is provided with marking means for marking a machining line. 5. A support device for mounting a shaped steel having at least two intersecting sides, wherein a mounting surface on which a web of shaped steel is mounted is formed with a gradient of a predetermined angle with respect to a horizontal plane, A support device characterized in that an end face on the top side in the width direction of the mounting face is formed at an angle at which a flange of shaped steel can abut.