JP6769629B1 - Work fixing device and metal processing system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a work fixing device capable of fixing a plate-shaped work without narrowing a processing area, and a metal processing system using the work fixing device. A work fixing device 80 and a metal processing system 100 sandwich and fix a peripheral edge portion 5b that functions as an outer frame of a work 1 by a holding portion 32 and a clamp body 34 having dimensions that do not protrude into a machining region 5a. Therefore, the work 1 can be fixed without narrowing the processing region 5a. Further, since the work 1 is fixed by the moving mechanism 36 such as the hydraulic cylinder mechanism, the work 1 can be fixed extremely easily as compared with the conventional method in which the steel material to be the weight is welded and cut and removed. it can. As a result, it is possible to reduce the burden on the operator and improve the work efficiency. [Selection diagram] Fig. 1

Description

The present invention mainly relates to a metal processing system for fusing a work using a flammable gas or a flammable gas, and a work fixing device thereof.

There is a method using a gas flame as one of the processing methods such as cutting, groove, and welding for a metal work. Among the thermal cutting machines using such a gas flame, for example, the gas cutting machine mixes and burns a flammable gas such as propane and a flammable gas such as oxygen to generate a high-temperature gas flame, and this gas is generated. A flame is sprayed onto the work to blow it. Further, as another heat cutting machine that melts the work by heat, there are a plasma cutting machine, a laser cutting machine and the like.

In machining a plate-shaped work using such a heat cutting machine, the work itself may be displaced on the table due to expansion or deformation due to heat during machining. Therefore, in order to perform machining with high dimensional accuracy, it is necessary to fix the work and hold it so that the positional deviation does not occur. Here, the following [Patent Document 1] discloses a device relating to a work transfer device for holding and processing a long work such as H-shaped steel and channel steel. However, when a member part is cut out from a plate-shaped work using a heat cutting machine, the margin portion is basically discarded. Therefore, from the viewpoint of material cost reduction, it is desirable to perform nesting on the member parts to be cut out to optimize the margin portion to the minimum and to make the processing area as wide as possible. On the other hand, sandwiching the work with a large clamp as in [Patent Document 1] is not preferable because it narrows the processing area. For this reason, conventionally, a method has been adopted in which a steel material serving as a weight is welded to one side of the work to prevent the work from shifting due to the weight of the steel material.

Square root extraction No. 4-76346

However, the method of welding and holding a steel material requires a welding technician in addition to the time required for welding the steel material. In addition, it is necessary to cut and remove the steel material after processing the work, which causes a problem of poor work efficiency.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a work fixing device capable of fixing a plate-shaped work without narrowing a processing area, and a metal processing system using the work fixing device.

The present invention
(1) A work fixing device for holding a plate-shaped work 1.
A reference surface 30 in which one side of the work 1 comes into surface contact to position the work 1 and
A holding portion 32 that holds the lower surface of the contact side 3 of the work 1 that is in surface contact with the reference surface 30 and
A clamp body 34 that presses and holds the upper surface of the contact side 3 and
A holding claw 38 protruding downward on the lower surface of the tip of the clamp body 34,
It has a moving mechanism 36 that moves the clamp body 34 up and down, and has.
The holding portion 32 and the clamp body 34 do not project into the processing region 5a of the work 1, and the horizontal distance L3 from the reference surface 30 to the tip of the holding claw 38 is approximately half the width L1 of the holding portion 32. The above problem is solved by providing the work fixing device 80 characterized in that the width of the holding claw 38 is smaller than the horizontal distance L3 .
(2) A first plate-shaped member located below all the clamp bodies 34, and a second plate-shaped member on which the first plate-shaped member is placed and larger than the first plate-shaped member. Have,
One side surface of the first plate-shaped member constitutes the reference surface 30.
The problem is solved by providing the work fixing device 80 according to (1) above , wherein the upper surface of the portion of the second plate-shaped member protruding from the reference surface 30 constitutes the holding portion 32. To do.
(3) With the work fixing device 80 according to the above (1) or (2),
A thermal cutting machine 10 that injects a gas flame, plasma, or laser to blow the work 1 and
It has a work table 20 for locating a plate-shaped work 1 at a processing position of the heat cutting machine 10.
The work fixing device 80 is arranged adjacent to the work table 20 independently of the heat cutting machine 10 and the work table 20 .
The above problem is solved by providing the metal processing system 100 characterized in that the upper surface position of the holding portion 32 of the work fixing device 80 and the mounting position of the work 1 on the work table 20 are substantially flush with each other. To do.

In the work fixing device and the metal processing system according to the present invention, the peripheral portion of the work is sandwiched and fixed by the holding portion and the clamp body. Therefore, the work can be fixed without narrowing the machining area. Further, since the work is fixed by the moving mechanism, the work can be easily fixed. As a result, it is possible to reduce the burden on the operator and improve the work efficiency.

It is a figure which shows the work fixing device and the metal processing system which concerns on this invention. It is an enlarged view of the sandwiching part of the work fixing device which concerns on this invention. It is an enlarged view of the holding state of the work fixing device which concerns on this invention.

The work fixing device and the metal processing system according to the present invention will be described with reference to the drawings. Here, FIG. 1A is a top view schematically showing the metal processing system 100 and the work fixing device 80 according to the present invention, and FIG. 1B is a side view.

First, the metal processing system 100 according to the present invention includes a work fixing device 80 according to the present invention, a heat cutting machine 10 for injecting a gas flame, plasma or a laser to melt the work 1, and the heat cutting machine 10. It has a work table 20 for locating a plate-shaped work 1 at a processing position.

Further, the heat cutting machine 10 is plate-shaped by injecting or irradiating a high-temperature gas flame generated by combustion of a flammable gas or a flammable gas, a plasma arc generated by applying a high voltage, laser light, or the like. A well-known gas cutting machine, plasma cutting machine, laser cutting machine, or the like that cuts the work 1 can be used. The heat cutting machine 10 is preset with a nozzle 12 for injecting these gas flames, plasma, lasers, etc., and a nozzle moving mechanism 14 for moving the nozzle 12 XY on the processing position plane of the heat cutting machine 10. It has a processing machine control unit (not shown) that moves and controls the nozzle movement mechanism 14 according to the program. Further, the work table 20 has, for example, a leg portion 24, a horizontal frame 26 erected on the leg portion 24, and a plurality of pivots 22 arranged on the horizontal frame 26 at predetermined intervals. There is. Then, the arranged pivots 22 form a table on which the plate-shaped work 1 is placed, and are arranged at the processing position of the heat cutting machine 10.

Further, the work 1 used in the metal processing system 100 and the work fixing device 80 is a metal plate having a predetermined thickness, and the processing region 5a in which the member parts are cut out by the heat cutting machine 10 and the periphery of the processing region 5a. It has a peripheral edge portion 5b, which is located at and functions as an outer frame. Since the peripheral edge portion 5b becomes a margin portion that is not processed and is finally disposed of, it is preferable to narrow the peripheral edge portion 5b as much as possible in order to widen the processing area 5a, and generally, the width is several cm. Consists of degree.

The work fixing device 80 according to the present invention is installed adjacent to the work table 20, and as shown in the enlarged view of FIG. 2, one side (contact side 3) of the work 1 comes into contact with the work 1 to position the work 1. The reference surface 30 for performing the above, the holding portion 32 for holding the lower surface of the contact side 3 in contact with the reference surface 30, the clamp body 34 for pressing and holding the upper surface of the contact side 3, and the clamp body 34 up and down. It has a moving mechanism 36 to move it. In the metal processing system 100, the work fixing device 80 functions as a fixing device for the work 1 of the heat cutting machine 10, but the application of the work fixing device 80 is not limited to this, and for example, a physical cutting tool can be used. It can also be used as a fixing device for other metal processing equipment used. Further, a plurality of work fixing devices 80 may be arranged in the lateral direction to sandwich and fix the large work 1.

Further, the holding portion 32 of the work fixing device 80 has a size that does not protrude toward the processing region 5a when the contact side 3 of the work 1 comes into surface contact with the reference surface 30. That is, the distance L1 from the reference surface 30 to the tip of the holding portion 32 is set to a value that does not exceed the width dimension L2 of the peripheral edge portion 5b. The height dimension of the reference surface 30 is not particularly limited, but it is preferable that the height dimension does not deviate significantly from the thickness of the work 1. The upper surface position of the holding portion 32 is substantially flush with the mounting position of the work 1 (the apex position of the pivot 22) on the work table 20 (the height position is substantially the same). As a result, the work 1 is maintained substantially horizontally on the work table 20 and the holding portion 32.

Although not particularly limited with respect to the shape of the clamping member 34, that having a holding claw 38 which protrudes downward on the lower surface of the tip. In this configuration, since the pressing pressure is concentrated on the tip of the holding claw 38, the clamp body 34 and the holding portion 32 can hold the clamp body even more firmly. Further, the rod 36a of the moving mechanism 36 that moves the clamp body 34 up and down is fixed to the clamp body 34. Further, the tip of the clamp body 34 has a size that does not protrude into the processing region 5a of the work 1 when the clamp body 34 is clamped and fixed. That is, the value obtained horizontal distance L3 does not exceed the width L2 of the peripheral edge portion 5b from the reference plane 30 to the tip end of the clamp body 34, shall be the particular about half the width L1 of the holding portion 32. For example, if the width L2 of the peripheral edge portion 5b of 2 cm, a width L2 of the holding portion 32 and 2 cm, you horizontal distance L3 of the tip of the clamp member 34 to the value of about 1 cm. It is preferable that a plurality of clamp bodies 34 are provided in the lateral direction (direction along the reference surface 30), and as shown in FIG. 1A, it is particularly preferable to provide the clamp bodies 34 at three locations on the left, right, and center.

Further, as the moving mechanism 36, a well-known device capable of moving and pressing the clamp body 34 with a certain force can be used, and it is particularly preferable to use a hydraulic cylinder mechanism. Then, as described above, the rod 36a of the moving mechanism 36 is fixed to the clamp body 34, and when the moving mechanism 36 operates, the rod 36a moves up and down, and the clamp body 34 moves up and down accordingly.

Next, the operations of the metal processing system 100 and the work fixing device 80 will be described. First, the plate-shaped work 1 is placed on the pivot 22 of the work table 20 and arranged at the processing position of the heat cutting machine 10. At this time, the clamp body 34 of the work fixing device 80 is in the upper position. Next, the work 1 is moved to the side of the work fixing device 80. Then, one side of the work 1 is brought into contact with the reference surface 30 so as to be in surface contact with the reference surface 30. The side that comes into surface contact with the reference surface 30 is the contact side 3. Due to the surface contact between the contact side 3 and the reference surface 30, the work 1 is positioned on the pivot 22 in a direction substantially perpendicular to the reference surface 30. As a result, the vertical and horizontal directions of the work 1 become substantially the same as the XY moving directions of the nozzle 12. At this time, the peripheral edge portion 5b on the contact side 3 side is placed and supported on the holding portion 32. Since the upper surface position of the holding portion 32 is substantially flush with the mounting position of the work 1 on the work table 20 as described above, the work 1 is maintained substantially horizontally on the work table 20 and the holding portion 32. Will be done.

Next, the operator operates the operating lever 44 of the moving mechanism 36 to give a lowering operation instruction to the moving mechanism 36. As a result, for example, when the moving mechanism 36 is a hydraulic cylinder mechanism, the hydraulic pump 46 operates and the moving mechanism 36 moves downward. As a result, the rod 36a is pulled downward, and the clamp body 34 is lowered accordingly. Then, as shown in FIG. 3, the holding claw 38 of the clamp body 34 comes into contact with the upper surface of the peripheral edge portion 5b of the work 1 and presses and holds it downward. The pressing pressure at this time is preferably, for example, about 30 kN to 70 kN (kilonewton) for one clamp body 34, and about 90 kN to 210 kN for three clamp bodies 34. As a result, the peripheral edge portion 5b of the contact side 3 of the work 1 is sandwiched and fixed from the vertical direction by the holding portion 32 and the clamp body 34.

Next, the operator operates the heat cutting machine 10. As a result, for example, a high-temperature flame is ejected from the nozzle 12 of the heat cutting machine 10 to melt the work 1. Further, the processing machine control unit moves the nozzle 12 in the processing region 5a in the XY directions according to a preset program. As a result, the work 1 is cut into a predetermined shape, and the member parts having the programmed shape are cut out. At this time, since the contact side 3 of the work 1 is sandwiched and fixed by the work fixing device 80, the work 1 does not shift in position during machining due to heat, and the member parts can be cut out with high dimensional accuracy. Further, since the clamp body 34 and the holding portion 32 sandwich and fix the peripheral edge portion 5b that functions as an outer frame, the machining region 5a is not narrowed.

When all the processing by the heat cutting machine 10 is completed, the operator stops the heat cutting machine 10. Next, the operating lever 44 is operated to give an ascending operation instruction to the moving mechanism 36. As a result, the hydraulic pump 46 operates and the moving mechanism 36 moves up. As a result, the rod 36a is pushed upward, and the clamp body 34 is raised accordingly. As a result, the sandwiching of the work 1 between the holding portion 32 and the clamp body 34 is released. Then, when the clamp body 34 rises to a predetermined position, the moving mechanism 36 stops its operation and goes into a standby state. Next, the worker collects the cut out member parts, the peripheral edge portion 5b, and the margin portion from the work table 20, and sends the member parts to a subsequent process for appropriate processing. In addition, the margin portion including the peripheral portion 5b is appropriately disposed of.

As described above, in the work fixing device 80 and the metal processing system 100 according to the present invention, the peripheral portion 5b that functions as the outer frame of the work 1 is provided by the holding portion 32 and the clamp body 34 having dimensions that do not protrude into the machining region 5a. Hold and fix. Therefore, the work 1 can be fixed without narrowing the processing region 5a. Further, since the work 1 is fixed by the moving mechanism 36 such as the hydraulic cylinder mechanism, the work 1 can be fixed extremely easily as compared with the conventional method in which the steel material to be the weight is welded and cut and removed. it can. As a result, it is possible to reduce the burden on the operator and improve the work efficiency.

Since the work fixing device 80 and the metal processing system 100 shown in this example are examples, the configuration, dimensions, arrangement, operating mechanism, design, and the like of each part of the heat cutting machine 10, the work table 20, and the work fixing device 80, etc. Is not limited to the above example, and can be modified and implemented without departing from the gist of the present invention.

1 work
3 Contact side
5a Processing area
10 Heat cutting machine
20 work stand
30 reference plane
32 holding part
34 Clamp body
36 movement mechanism
38 Holding claw
80 Work fixing device
100 metal processing system

Claims (3)

A work fixing device that holds a plate-shaped work.
A reference surface in which one side of the work is in surface contact to position the work,
A holding portion that holds the lower surface of the contact side of the work that is in surface contact with the reference surface, and
A clamp body that presses and holds the upper surface of the contact side, and
A holding claw protruding downward on the lower surface of the tip of the clamp body,
It has a moving mechanism that moves the clamp body up and down,
The holding portion and the clamp body do not protrude into the machining area of the work , and
A work fixing device characterized in that the horizontal distance L3 from the reference surface to the tip of the holding claw is approximately half the width L1 of the holding portion, and the width of the holding claw is smaller than the horizontal distance L3 . It has a first plate-shaped member located below all the clamp bodies, and a second plate-shaped member on which the first plate-shaped member is placed and larger than the first plate-shaped member. ,
One side surface of the first plate-shaped member constitutes a reference surface.
The work fixing device according to claim 1 , wherein the upper surface of a portion of the second plate-shaped member projecting from the reference surface constitutes a holding portion . The work fixing device according to claim 1 or 2,
A thermal cutting machine that blows a gas flame, plasma or laser to melt the workpiece,
It has a work table for locating a plate-shaped work at the processing position of the heat cutting machine.
The work fixing device is arranged adjacent to the work table independently of the heat cutting machine and the work table, and is also arranged.
A metal processing system characterized in that the upper surface position of the holding portion of the work fixing device and the mounting position of the work on the work table are substantially flush with each other.

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