JPH0331548B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention [Field of Industrial Application] The present invention relates to a work table for a cutting device on which a plate material for cutting is placed on the upper end surface of a strip plate.

[Prior Art] Conventionally, it has been used with a cutting device such as a gas cutting device, a plasma cutting device, or a laser cutting device, and is used as a work table on which a plate material for cutting is placed. It is known that the plates are arranged side by side and the upper end surface forms a mounting surface for the plate material.

In some conventional work tables, for example, the strips are arranged vertically and horizontally in a grid pattern in order to keep the strips firmly standing. If you just arrange it in a parallel grid shape,
Since the strip plate is unstable, it is known that the vertical beam and the horizontal beam are further fixed by welding to form a mounting surface for the plate material.

When using this conventional work table to cut a plate material with a fusing type cutting device, for example, a plasma cutting device, the plasma stream emitted from the plasma torch penetrates the plate material and reaches the strip. Therefore, the strip plate is also burned out and damaged by the plasma torch. Therefore, when cutting is repeatedly performed, the mounting surface of this strip plate becomes deformed and becomes unable to maintain horizontality or support the plate material on average, resulting in the need for replacement.

[Problem to be solved by the invention] However, in conventional work tables, the vertical and horizontal beams are fixed by welding to prevent wobbling.
It was impossible to remove it without cutting the strip. For this reason, for example, when replacing a single strip that has been damaged by cutting the plate, the intersecting girders must also be cut by melting, making it difficult to replace only a portion of the strip. It took a lot of trouble to replace all the shingles.

Moreover, when the plate thickness of the strip plate is small and the span between the intersections of the parallel crosses is long, the strip plate may buckle due to the weight of the plate material placed thereon. For this reason, it was necessary to arrange the strips closely together to shorten the span between the intersections. As a result, when manufacturing the worktable, the number of parts increases, making manufacturing complicated. There was also the problem of increased weight of the work table.

Furthermore, when the plate material is fed by sliding it horizontally on the mounting surface of the work table, there is a problem in that the plate material tends to slip along the longitudinal direction of the strip and is easily displaced in a specific direction. For this reason, there was a problem in that the plate material could not be fed from any direction depending on the working situation, resulting in poor workability.

To solve this problem of directionality when supplying plate materials, a work table is known in which a band plate bent in a sawtooth shape is supported vertically between girders installed in parallel, but in this case, the installation of the band plate・Replacement was much more difficult than when the strips were made into parallel cross-shaped strips. In addition, manufacturing the serrated strip itself is complicated, and storage thereof also takes up a lot of space.

The object of the present invention is to solve the above-mentioned problems, and to make the work table for a cutting device easier to manufacture and repair, and to improve workability.

Structure of the Invention [Means for Solving the Problems] A work table for a cutting device of the present invention includes a metal strip plate that is erected and supported on a clamping member with one side edge as an upper end surface, A work table for a cutting device on which a plate material for cutting is placed on an end face, characterized in that the strip plate is flexed and supported upright between at least two or more clamping members.

[Function] In the work table for a cutting device of the present invention, the metal band plate is flexed and supported upright between at least two or more clamping members, so this band plate has its own elasticity. Due to the deformation, it firmly contacts the holding member. Therefore, there is no need to fix by welding or the like.

Further, since the strip plate is arranged so that its rigidity is increased by bending, a plate having a small thickness may be used.

Furthermore, since the strip is curved,
It has no directionality with respect to the plate material slid on its upper end surface.

[Example] In order to further clarify the structure and operation of the present invention described above, a duct material cutting device will be described next as a preferred embodiment to which the work table for a cutting device of the present invention is applied. Fig. 1 is a perspective view showing a schematic configuration of a duct material cutting device as an embodiment of the present invention, Fig. 2 is a perspective view showing the structure of a work table, and Fig. 3 is a perspective view showing details of its processing head. , FIG. 4 is a perspective view showing the moving mechanism of the processing head.

As shown in the figure, this duct material cutting device includes a work table 1 of about 2 meters x 4 meters,
on this work table 1 in the X-axis direction (longitudinal direction)
The gate-shaped frame 3 and the gate-shaped frame 3
The processing head 5 is provided with a processing head 5 that is moved in the Y-axis direction (width direction of the plate material). The gate-shaped frame 3 is supported slidably in the X-axis direction by guide rails 7 and 8 provided on both sides of the work table 1, and is supported by a stepping motor for transportation (hereinafter referred to as
By driving the shaft motor) 10,
It can be transported to a desired position. The cables, air tubes, etc. that transmit power to the X-axis motor 10 and processing head 5 are connected to a flexible cable carrier 12 installed at the bottom of the guide rail 7 and further along the top surface of the gate-shaped frame 3. It is housed within the laid cable carrier 14.

The thin iron plate 15 to be cut, etc. is
As shown in FIG. 1, although it is simply placed on the work table 1, it is only slightly displaced due to its own weight and static friction, and the accuracy required for processing can be obtained. As shown in FIG. 2, the work table 1 includes beams 22 to 33 fitted across the width direction in an external housing 20, and grooves carved at equal intervals on the upper surface of the beams 22 to 33. It has a cage structure consisting of 22 supporting members SM fitted into the frame. Figure 2 is for ease of understanding.
A state in which the support member SM is fitted in only the front half is shown. The support members SM are long iron plates with a width of about 50 mm, and are fitted into the grooves of the beams 22 to 33 alternately so that they stand on their own. As a result, the support member SM is bent and becomes wavy, increasing its own rigidity and providing sufficient support for the iron plate 15 to be processed. In addition, beam materials 22 to 3
3 is inserted and fixed between fitting parts 35 and 36 provided inside the external housing 20. Therefore, it is extremely easy to assemble and remove the support member SM forming the screen and the beams 22 to 33.

Next, the structure of the processing head 5 will be explained.
As shown in FIG. 3, the processing head 5 is assembled using a movable support member 50 as a base.
A stepping motor (hereinafter referred to as Y-axis motor) 51 for movement is fixed via a speed reducer 52 approximately at the center. Y-axis motor 5 for this movement
1 and an oil-based pen 54 as a writing member.
A marking head 55 for holding a plasma torch 56 and a cutting head 60 for holding a plasma torch 56 are provided.

The marking head 55 includes a base member 62 fixed to the movable support member 50, a direct-acting air cylinder 65 sandwiched and fixed to a fixed member 63, and an elevating member 67 fixed to the spindle tip of the air cylinder 65. A gripping member 72 is slidably attached to two pins 68 and 69 erected on the elevating member 67 and grips and fixes the oil pen 54 in the arm portion 70, and the gripping member 72 is attached to the pins 68 and 69.
The solenoid 77 is raised against the bias of springs 74 and 75 fitted therein. Therefore, the air cylinder 65 is driven and the elevating member 6
When the marking head 7 is lowered, the tip of the oil pen 54 of the marking head 55 comes into contact with the surface of the iron plate 15 for processing under the force of the springs 74 and 75. If the entire machining head 5 moves in this state, a line will be drawn on the surface of the iron plate 15 as it moves, but in sections where it is not necessary to draw a line, the solenoid 77 is energized,
The oil pen 54 is raised together with the grip member 72.

On the other hand, the cutting head 60 is composed of a rectangular air cylinder 80 and a torch holding part 82 which is fixed to a movable part of the air cylinder 80 and is moved up and down. Five free bears 84 are provided on the lower surface of the torch holding part 82, and these free bears 84 press smoothly and strongly against the iron plate 15 to be processed, and during cutting by the plasma torch 56, the iron plate 1
Fix the iron plate 15 so that the distance between it and the tip of the torch is kept constant and that the iron plate 15 does not shift. The plasma torch 56 is a well-known type that receives supply of oxygen and electric power from a plasma unit (not shown in FIG. 3) and ejects a high-temperature plasma stream from the tip of the torch onto the iron plate 15, which is the base material.

The processing head 5 described above is assembled to a movable support member 50, and this movable support member 50 is slidably supported by a guide rail 86. The movable support member 50 has a back surface (not shown),
It has bearing assemblies extending in its longitudinal direction, and is configured such that two rows of upper and lower bearing assemblies fit into upper and lower grooves 87 and 88 of the guide rail 86.
FIG. 4 is a perspective view of the movable support member 50 seen from the back side, and as shown in the figure, the movable support member 50 is
0 is connected to the Y-axis motor 5 via a reducer 52.
A toothed pulley 91 connected to one wheel and two free pulleys 92 and 93 are attached. A timing belt 95 is engaged with the toothed pulley 91, and free pulleys 92 and 93 are used to bring the timing belt 95 into contact with the toothed pulley 91 at a predetermined circumferential length.

The timing belt 95 is fixed to a fixing member 97 and a mounting member 98 housed in the legs on both sides of the portal frame 3, and the mounting member 98 is further fixed to a fixing member 100 by a spring 99. Since then, it is constantly stretched under strong tension from the spring 99. Therefore,
When the Y-axis motor 51 is rotated, the toothed pulley 91
rotates, and the entire movable support member 50 also moves smoothly in the Y-axis direction without causing any bumps or the like.

The mechanism for conveying the portal frame 3 in the X-axis direction has almost the same configuration as the configuration for the Y-axis described above, and by rotating the X-axis motor 10, the timing belt and the toothed In combination with a pulley, the gate-shaped frame 3 is transported.

Next, the structure and operation of the control device for controlling the X-axis motor 10, the Y-axis motor 51, the processing head 5, the plasma unit that supplies oxygen, etc. for the plasma torch 56, etc. will be explained. FIG. 5 is a block diagram showing a schematic configuration of this control device 110.

As illustrated, the control device 110 includes a well-known
From CPU111, ROM112, RAM114, etc.
A floppy disk controller (FDC) 117, a display control circuit 120, and a keyboard input port 12 are configured as so-called arithmetic and logic circuits and are interconnected via a bus 115.
1. An actuator drive circuit 123 and a motor control circuit 125 are provided.

The FDC 117 is a controller that drives and controls an external floppy disk drive 130. In this embodiment, the FDC 117 is a floppy disk drive that stores a program for generating a developed view according to the duct shape, basic data for these calculations, etc. Controls reading and writing data from disk. The display control circuit 120 is connected to the display device 132, and is a circuit that displays developed views, necessary messages, etc. based on commands from the CPU 111. The keyboard input circuit 121 is connected to the keyboard 135 and processes commands and data input from the keyboard 135 to the CPU 111.

The actuator drive circuit 123 is connected to the air cylinder 65 and solenoid 77 of the marking head 55 provided in the processing head 5, the air cylinder 80 of the cutting head 60, and the plasma unit 140. Therefore, CPU11
1 via the actuator drive circuit 123,
These air cylinders, etc. can be turned on and off freely. The plasma unit 140 is connected to a three-phase AC power source, an air compressor, and an oxygen cylinder 141 (not shown), and the control device 11
In response to a command from 0, high-temperature plasma is generated at the tip of the plasma torch 56.

The motor control circuit 125 is connected to the aforementioned X-axis motor 10 and Y-axis motor 51 via stepping motor drivers 143 and 145. Therefore, the CPU 111 controls the motor control circuit 1.
25, the double-shaft motors 10 and 51 can be freely controlled to control the machining head 5 to a desired position. In this embodiment, stepping motors are used for both the X-axis and Y-axis motors 10 and 51, but they are not limited to stepping motors, and may be constructed from ordinary servo motors.

Next, in the duct material cutting apparatus having the above configuration, processing performed by the control device 110 when processing the iron plate 15 to be processed for manufacturing a duct will be described. FIG. 6 shows the control device 11
1 is a flowchart showing a duct manufacturing processing routine executed by No. 0.

When this routine is started, the first step is step 200.
Then, duct shape input processing is performed. The duct shape input process is a process of inputting the shape of the duct to be manufactured, and the shape may be input directly from the keyboard 135 or input using a digitizer or the like on another control device equipped with CAD functionality. The duct shape may be inputted by controlling the FDC 117 and reading the duct shape once stored on a floppy disk. Once the duct shape has been input in this way, a process of creating a developed diagram and a process of assigning assembly codes to each developed part are performed (step 210).

The developed drawing creation process is based on the size of the steel plate 15 to be processed and the shape of the duct to be manufactured.
This is the process of creating a developed view with the highest yield, and is what is called graphic processing. FIG. 7 shows an example of the arrangement of the duct members cut out from the iron plate 15 by the above-mentioned graphic processing. As shown in the figure, two sets of duct members are developed and cut on the iron plate 15 with the highest yield.

On the other hand, the process of assigning a set code to each part is
In the case of a rectangular duct, a series of codes are given to the parts that make up the duct, which are usually expanded into four pieces. For example, each part making up the first duct is given a code of the duct member 15c as shown in FIG. The code "A-1" is assigned as the phase number information 201c drawn near the base, and "15x20" and "base 20x15" are assigned as the base/destination information 202c. Here, "15 x 20" and "base 20 x 15" represent the dimensions of the openings at the tip and base when assembled as a duct.

Furthermore, "left" is given as the vertical and horizontal information 203c, and the duct member 15c is assigned the part number information 201c.
It can be seen that it forms the left side of a set of duct materials given "A-1".

Furthermore, “W” is assigned as the connection information 204c. This connection information 204c is used when assembling the duct as a duct as shown in FIG.
5a, 15b is indicated as a double fold. On the other hand, as shown in FIG. This indicates that it is a single fold.

As mentioned above, the duct member 15c has the part number information 20.
1c, source information 202c, top, bottom, left and right information 203
A set code 200c consisting of c and connection information 204c is given.

Here, in this embodiment, processing is performed so that the surface that becomes the inner surface when assembled as a duct in the developed figure processing becomes the upper surface of the iron plate 15. Further, a group code 200c is drawn on the upper surface of the base of the duct member 15c. Therefore, the set code 200c is drawn on the inner surface of the base portion of the duct member 15c, and functions itself as inside/outside information and also as source/destination information.

For the next set of duct members, for example, duct member 1
As drawn in 5h, phase number information 201h “B-1”
and other information similar to that explained in connection with the above-mentioned duct member 15c.

In addition, in this embodiment, the phase number information 201c, 2
01h also serves as connection information, and when assembling the duct, by connecting in alphabetical order such as "A-1", "B-1", and "C-1", "D-1" (not shown), etc. The duct can be easily hung without the hassle of checking drawings.

In addition, for example, each member constituting the first duct is marked with "A-1" or "A-1" in order of top, bottom, left and right of the duct.
4" code, and each part that makes up the next duct is given a code of "B-1" or "B-4". In this way, the part number information is given, and the vertical and horizontal information is also given at the same time. It may also represent something.

After making the above preparations, the air cylinder 65 is turned on via the actuator drive circuit 123, and the marking head 55 of the processing head 5 is lowered (step 220). As a result, oil pen 5
4 descends, and its pen tip contacts the iron plate 15. Therefore, a process of drawing a combination code is performed (step 230). In this process, while turning on and off the solenoid 77, the machining head 5 is moved along the X axis and the Y axis.
This is a process of moving in the axial direction and drawing the assembly code given in step 210 at a position corresponding to the deployed position of each member constituting the duct.

When the drawing of the set code is completed, it is determined whether or not to cut the iron plate 15 (step 240), and if it is to be cut, the process moves to step 250 and subsequent steps. first,
The air cylinder 65 is turned off to raise the marking head 55 (step 250), and then the air cylinder 80 is turned on to lower the cutting head 60 (step 260). Thereafter, the plasma unit 140 is controlled via the actuator drive circuit 123, and the motor control circuit 1
25 to drive the X-axis motor 10 and Y-axis motor 51 to drive the processing head 5 two-dimensionally,
The steel plate 15 is cut (step
270). At this time, cutting is performed according to the developed view determined in step 210. When the cutting process is completed in this way, the air cylinder 80 is turned off and the cutting head 60 is raised (step 280), and the duct manufacturing process is completed.
Exit to "END" to end this routine.

On the other hand, if it is determined in step 240 that the iron plate 15 is not to be cut, for example, the iron plate 15
If it is resin-coated, the process moves to step 300 to calculate an offset. As is clear from FIG. 3, the center position of the oil pen 54 and the center position of the plasma torch 56 do not match, and the X-axis, Y-axis
Since there is an offset in both directions of the axis, use this to transfer the data created for cutting with the oil pen 54.
This is a process to correct for writing by. After the correction of the development view data of each member constituting the duct is completed, shape writing processing is subsequently performed (step 310). The shape writing process is the same as the cutting process (step 270) except that the marking head 55 is used instead of the cutting head 60.
move on. That is, instead of cutting with the plasma torch 56, a cutting line is drawn with the oil marker 54. When the shapes of all the members constituting the duct have been written, the air cylinder 65 is turned off and the marking head 55 is turned off.
is increased (step 320) and exits to "END" to end this routine.

In this way, when the cutting or writing of the external shape and the set code on the iron plate 15 are completed and the duct constituent members are collected, the next iron plate for cutting is supplied. For example, when supplying an iron plate by sliding it in the horizontal direction, the iron plate is slid on a mounting surface formed by the upper end surface of the support member SM of the work table 1. At this time, since the supporting member SM is erectly supported in a wave-like manner and does not have a specific direction, the iron plate can be slid onto the work table 1 and supplied without shifting in a specific direction.

As a result, it is only necessary to feed the iron plate 15 from the direction where it is easy to work, and work efficiency can be significantly improved. Furthermore, the supply direction of the iron plate 15 can be freely selected depending on the layout within the factory, making it possible to easily realize an optimal factory layout. In particular, since roll-shaped thin plates are often used as duct materials, the effect of eliminating this directionality is extremely large.

Further, since the supporting member SM is erected and supported in a wave-like manner, the iron plate 15 is not uneven in a particular direction on the work table 1. As a result, even when writing characters, etc., the oil-based pen 54 that is in contact with the upper surface of the iron plate 15 does not slip in a particular direction.
Therefore, it is possible to write set codes and outline lines in a good manner. In particular, when writing outline lines, the effect of being able to write accurate shapes is tremendous. As a result, it has become possible to perform extremely sophisticated work such as writing the external shape instead of cutting. Further, since the characters of the set code for advanced information are not written incorrectly, the set code can be provided as accurate information.

As explained above, in this embodiment, the work table 1 on which the plate material to be processed is placed has a structure in which the beam members 22 to 33 and the support member SM are combined, and the support member SM is 22 to 3
They can be supported upright by simply inserting them alternately into the grooves 3. Therefore, assembly and replacement have become extremely easy.

In addition, since the support member SM is bent in a wave-like manner and is supported upright, the support member SM increases its rigidity due to its own elastic force. Therefore, as the support member SM,
Even if an extremely thin strip plate is used, the iron plate 15 can be securely placed and supported. As a result, handling of the support member SM becomes convenient, and workability in manufacturing the work table can be significantly improved. Similarly, when replacing the support member SM, work efficiency can be significantly improved.

Furthermore, when storing the strips as supporting members SM, they can be kept face down on the factory floor, etc., and the serrated strips that were conventionally used to solve the problem of directionality can be stored. There are no problems with storing it in different locations. And it's extremely easy to get spare shingles.

Note that the duct material cutting device described in this embodiment cuts the duct component members from the plate material or writes the assembly code together with the external shape, thereby saving the effort of comparing drawings when arranging the duct component materials and assembling the duct. be able to. In addition, since the rolled thin plate can be continuously slid and fed, the cutting operation can be made more efficient. In such cases, this set of codes becomes even more effective.

Although the embodiments of the present invention have been described above, the present invention is not limited to these embodiments in any way. For example, a configuration including a laser or an electrical discharge machining torch in place of the plasma torch, or a configuration in which the marking head 55 and a cutter are provided are also possible. A configuration in which the machining head 60 and the machining head 60 are provided separately on the gate-shaped frame 3 and both are moved separately to increase the degree of freedom, and a configuration in which the machining head 5 is provided on a multi-jointed arm instead of the portal frame 3. etc., within the scope of the gist of the present invention,
Of course, it can be implemented in various ways.

Furthermore, as a result of preventing the oil-based pen 54 from slipping on the steel plate 15, it has become possible to write sophisticated text information and accurate position information, so it is possible to write construction method instructions in conjunction with set codes, such as flanges, etc. It is also possible to further reduce assembly man-hours by providing information on the joints, common plates, rib positions, bending information, etc. As an example of this, FIG. 10 shows a developed view of a duct member with rib position information and a duct member with bending position information. Four duct members 15i shown in the figure
15l are assembled to form a bent duct 16a as shown in FIG. 11A. The duct member 15i is provided with a set code 200i near the base and rib position information 211i to 214i.
The rib position information 211i indicates the position where a rib 231 as shown in FIG. 11B is to be formed by folding or pressing. Similarly, the duct member 15j has rib position information 211j to 214.
j, and the duct member 15k also has rib position information 2.
11k to 214k, and rib position information 211l to 214l are attached to the duct member 15l.

These rib position information indicate mutually related positions, and after performing pressing etc. according to the rib position information 211i to 211l, the bent duct 16
When a is assembled, a continuous rib 231 that goes around the outer circumference is formed. Other rib position information 212
i~212l, 213i~213l, 214i~
214l similarly constitutes ribs 232, 233, 234, and the positional relationship of each is determined by graphic processing (step
210) and is assigned to the corresponding position.

As a result, the rib insertion work that was conventionally performed is greatly simplified, and the number of assembly steps is significantly reduced.

Further, the duct member 15n shown in FIG. 10 is assembled and has a circular opening 16 as shown in FIG. 11C.
The resulting hopper-shaped duct 16b has a rectangular opening 16d. The duct member 15n has a set code 2.
Along with 00n, bending position information 221n is attached, and by bending the duct member 15n according to the bending position information 221n, the hopper-shaped duct 16b as shown can be easily formed. This bending position information 221n is also calculated and provided in the graphic processing (step 210). In addition, among the set code 200n, "10R" and "element 20×
20”, indicating that the tip is circular and the base is square.

As a result, the duct 16 has a complicated shape as shown in the figure.
b can also be easily assembled.

Further, in the cutting process, the cutting speed may be automatically determined according to the required plate thickness depending on the type of the low-speed duct, high-speed duct, smoke exhaust or other ventilation duct, etc. In addition, in figure processing, it is not necessary to always make the inner and outer surfaces of the developed figure coincide with the same plane, and the inner and outer surfaces may be reversed and cut in order to maximize the yield. It is sufficient to add some kind of symbol such as "", "outside", etc., and the drawing position of the set symbol may be other than the origin, and some symbol such as an arrow may be used to represent the origin. Furthermore, the writing and cutting of the set code or the writing of the outline may be performed for each member.

Effects of the Invention As detailed above, according to the work table for a cutting device of the present invention, since the metal band plate is bent and supported in an upright manner, attachment and replacement of the band plate is extremely easy. Summer. As a result, manufacturing and repair of work tables has become extremely easy.

Also, since the strip is bent, the rigidity of the strip itself is increased. As a result, it became possible to use thinner strips. Therefore, handling of the strip becomes convenient and the weight of the work table is reduced.

Furthermore, since there are no girders running in a specific direction on the mounting surface of the plate material, even if the plate material is slid and fed, the plate material will not shift in the specific direction. As a result, plates can be fed from any direction depending on workability, factory layout, etc., which greatly contributes to improved workability and optimal factory layout.

In addition, there is an effect that the placed board material does not ripple unevenly in a specific direction.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a schematic configuration of a duct material cutting device as an embodiment of the present invention, FIG. 2 is a perspective view showing the structure of a work table 1, and FIG. 3 is a perspective view showing details of a processing head 5. 4 is a perspective view showing the movement mechanism of the processing head 5, FIG. 5 is a block diagram mainly showing the configuration of the control device 110, and FIG. 6 is a flowchart showing the duct manufacturing processing routine performed by the control device 110. 7 is a plan view illustrating a duct member developed by graphic processing and placed on a steel plate; FIG. 8 is a plan view of a duct member illustrating assigned group codes; and FIG. 9 is a plan view illustrating a set of duct members. FIG. 10 is a plan view of a duct member developed on a steel plate in another example; FIG. 11A is a perspective view of the assembled curved duct; FIG. FIG. 11C is a partial cross-sectional view showing the shape of the rib, and FIG. 11C is a perspective view of the hopper-shaped duct. 1... Work table, 5... Processing head,
15... Iron plate, 20... External casing, 22-33...
...beam material, SM...support member.

Claims (1)

[Claims] 1. A workpiece for a cutting device in which a metal strip is erected and supported by a clamping member with one side edge as the upper end surface, and a plate material for cutting is placed on the upper end surface of the strip. 1. A work table for a cutting device, characterized in that the strip plate is flexed and supported upright between at least two holding members.