JP2505711B2 - Method and device for cutting duct material - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for cutting duct material, and more particularly to a method and apparatus for cutting duct material from a thin metal plate material using plasma or laser.

[0002]

2. Description of the Related Art Conventionally, a duct is manufactured by cutting out each member constituting the duct from a thin plate material and assembling it with a goby or the like. Recently, various types of cutting out such members using laser or plasma have been developed.

For example, as a duct material cutting device, a work table on which a large plate material of several meters × several meters is placed, and a processing head which can freely travel on the work table in at least two directions of the X axis and the Y axis. Some have a torch for fusing plasma or the like.

In such an apparatus, it is not rare that each member of the duct is cut out from a large plate material having a length of several meters to obtain dozens to several tens of members at a time. These members often have special shapes one by one in order to realize the duct shape, and there is almost no compatibility. Therefore, if it is not known which member is to be combined with which member, there is a problem in that it takes a lot of trouble to match the members. In particular, such a problem is that in order to improve the yield of the plate material, when the duct constituent members are cut out from the most efficient plate cutting position, the members to be combined are not necessarily cut out next to each other. It could not be overlooked.

On the other hand, Japanese Patent Application Laid-Open No. 58-90496 proposes an automatic cutting machine which is provided with a cutting device and a marking device and which can apply a color corresponding to a manufacturing group to a cutting member. According to this proposal, the work of collecting the cutting member can be facilitated.

[0006]

However, from a member such as a duct member whose developed shape has a subtle change in shape, such as a taper, which cannot be easily recognized by the naked eye depending on the origin of the member assembling, the vertical direction of the member, and the like. However, there is a problem in that such a member requires a complicated labor for collating with a drawing and assembling the dimensions at the time of assembly after collection. In addition, it is necessary to identify not only the top and bottom of the top and bottom but also the inside and outside of the cut member at the time of assembly, and there is also a problem that complicated labor is required. Furthermore, when laying a duct,
A large number of man-hours are required for drawing collation in order to determine the connection order of ducts that consist of many main pipes and branch pipes and have a long distance.
It was an obstacle to efficient distribution. Therefore,
It was not enough to know the combination.

On the other hand, Japanese Laid-Open Patent Publication No. 59-73190 proposes a technique in which a marking torch using a laser is used to write characters indicating the origin, center of gravity, direction, etc. of a member. There is. However, JP-A-58-
The technique described in Japanese Patent No. 90496 is also disclosed in JP-A-59-7319.
In the technology described in Japanese Patent Publication No. 0, the cutting shape and the writing position are stored in an NC tape or the like, and the cutting shape and the cutting position are attached to a machine for cutting and marking. It is necessary to determine the position and the yield in consideration of the yield, and the more complicated the planing, the more complicated the marqueeing position,
The data creation work was a heavy burden.

Therefore, according to the present invention, it is possible to write information at an accurate position without the need for such troublesome work, and in addition to improving yield and facilitating material recovery, facilitating creation of work data. It is also intended to aim.

[0009]

According to the method for cutting duct material of the present invention, as described in claim 1, the expanded shape of the duct constituent members and the phase number indicating that each duct constituent member forms a pair at the time of assembly. A duct member for cutting out a duct constituent member and writing the group code on a metal thin plate material placed on a work table based on information and a group code composed of connection information indicating a connection at the time of assembly. A cutting method, when the expanded shape of the duct constituent member is input,
Based on the input developed shape, an arrangement for removing the duct constituent member on the thin plate material is determined, and the writing position of the set code is determined based on the determined arrangement result of each duct constituent member. It is characterized in that it is decided by.

It should be noted that when cutting out the duct constituent members, gas,
When laser, plasma, or other fusing is adopted, it is preferable to cut the duct component member by fusing the thin plate material from the plate cutting position where the writing of the set code is completed. Further, in the duct material cutting device of the present invention, as described in claim 2, the developed shape of the duct constituent members, the phase number information indicating that each duct constituent member forms a pair at the time of assembly, and the connection at the time of assembly. A duct material cutting device for cutting out a duct constituent member and writing the group code on a metal thin plate material placed on a work table based on the group code consisting of connection information, A development shape input means for inputting a development shape of the duct constituent member, and a plate removal position determining means for determining an arrangement for removing the duct constituent member on the thin plate material based on the input development shape; For each of the input duct constituent members,
Set code associating means for associating the set code to be attached thereto, and a set code writing position determination for determining the write position of the associated set code based on the determined placement result of each duct component member. And means.

[0011]

According to the method of the present invention, as shown in FIG. 1, first, the developed shape of the duct constituent member is input (S1). Then, based on the input expanded shape, the arrangement for removing the duct constituent members on the thin plate material is determined (S).
2). That is, after inputting the developed shape of the part, so-called nesting is performed to determine the plate cutting position,
At this time, it is only necessary to consider the yield.

After the plate cutting position is determined in this way, the writing position of the set code corresponding to each duct component is determined based on the plate cutting determined position (S3). Then, according to the determination of the plate cutting position and the writing position of the set code, the set code is written on the thin plate material and the duct constituent member is cut out (S4, S5). Here, when cutting out from the thin plate material is performed by fusing, the set code may be written first so that the set code is written before the thin plate material is deformed by the fusing.

As described above, the writing position of the set code is determined based on the planing decision position. Therefore, no matter what planing is carried out, the set code including not only the mere phase number but also information such as the connection between the duct constituent members,
Without a doubt, it will be written in the correct position.

That is, according to the method of the present invention, the writing position of the set code always corresponds to whatever plate cutting is performed, so that the correspondence or connection between the members becomes unclear or unclear. It never becomes accurate. In addition, the operator does not need to create data by paying attention to the correspondence between the plate cutting position and the set code writing position, and if the plate cutting position is decided only in consideration of the improvement in yield, That is all and it is extremely simple.

The method of the present invention can be preferably carried out by the cutting device of the present invention. That is, according to the cutting device of the present invention, the expanded shape input means inputs the expanded shape of the duct constituent member, and the plate removal position determining means considers the yield, etc. The arrangement for plate cutting is determined, the pair code associating means associates the pair codes to be attached to each duct constituent member, and the pair code writing position determining means determines the writing positions of these associated pair codes, It is determined based on the determined placement result of each duct constituent member. As a result, the writing position of the set code is automatically determined, and it is not necessary for the operator to input the writing position of the set code each time even if the plate cutting position becomes complicated.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to further clarify the structure and operation of the present invention described above, a preferred embodiment of the duct material cutting device of the present invention will be described. 2 is a perspective view showing a schematic configuration of a duct material cutting device as one embodiment of the present invention, FIG. 3 is a perspective view showing a structure of a work table, FIG. 4 is a perspective view showing details of a processing head thereof, and FIG. FIG. 6 is a perspective view showing a moving mechanism of a processing head.

As shown in the drawing, the duct material cutting device includes a work table 1 of about 2 meters × 4 meters,
The work table 1 is provided with a gate-shaped frame 3 that is conveyed in the X-axis direction (longitudinal direction), and a processing head 5 that is moved on the gate-shaped frame 3 in the Y-axis direction (width direction of the plate material). The gate-shaped frame 3 is slidably supported in the X-axis direction by guide rails 7 and 8 provided on both sides of the work table 1, and a stepping motor (hereinafter referred to as an X-axis motor) 10 for transportation. It is possible to convey to a desired position by driving. Cables, air tubes, etc. for transmitting power to the X-axis motor 10 and the processing head 5 are provided along the flexible cable bear 12 laid under the guide rail 7 and the upper surface of the portal frame 3. It is housed in the cable bear 14 laid down.

A thin iron plate 15 to be cut and processed.
2 is simply placed on the work table 1 as shown in FIG. 2, but is slightly displaced by its own weight and static frictional force, and the precision required for processing can be obtained. As shown in FIG. 3, the work table 1 includes beam members 22 to 33 that are fitted in the outer casing 20 in the lateral direction.
The beam members 22 to 33 have a cage structure composed of 22 support members SM fitted in grooves formed at equal intervals on the upper surfaces of the beam members 22 to 33. FIG. 3 shows a state in which the support member SM is fitted only in the front half in order to facilitate understanding.
The support member SM is a long iron plate having a width of about 50 mm, and the support members SM are alternately fitted into the grooves of the beam members 22 to 33 to stand by themselves. As a result, the support member SM is bent into a corrugated shape, the rigidity of the support member SM is increased, and the iron plate 15 to be processed is sufficiently supported. The beam members 22 to 33 are inserted and fixed between the fitting portions 35 and 36 provided inside the outer housing 20. Therefore, it is extremely easy to assemble and dismount the support members SM and the beam members 22 to 33 that form the cage.

Next, the structure of the processing head 5 will be described. As shown in FIG. 4, the processing head 5 is assembled with the movable support member 50 as a base, and a stepping motor (hereinafter, referred to as a Y-axis motor) 51 for movement is installed at a center of a reduction gear 52. Is fixed through. A marking head 55 that holds an oil-based pen 54 as a writing member with the moving Y-axis motor 51 interposed therebetween,
Cutting head 60 for holding the plasma torch 56
Are provided.

The marking head 55 is a movable support member 5.
A direct-acting air cylinder 65 that is sandwiched and fixed by a base member 62 and a fixing member 63 that are fixed to 0, and an elevating member 67 that is fixed to the tip of the spindle of the air cylinder 65,
The oil-based pen 5 is slidably attached to the two pins 68 and 69 that are provided upright on the elevating member 67 and is attached to the arm portion 70.
It is composed of a gripping member 72 for gripping and fixing 4 and a solenoid 77 for raising the gripping member 72 against the bias of the springs 74, 75 fitted to the pins 68, 69. Therefore, when the air cylinder 65 is driven and the elevating member 67 descends, the tip of the oil-based pen 54 of the marking head 55 is brought into contact with the surface of the iron plate 15 for processing under the bias of the springs 74 and 75. . If the entire processing head 5 moves in this state, a line is drawn on the surface of the iron plate 15 according to the movement, but in a section where it is not necessary to draw a line, the solenoid 77 is energized and the oil-based pen 54 is lifted together with the gripping member 72. Let

On the other hand, the cutting head 60 comprises a square air cylinder 80 and a torch holding portion 82 which is fixed to a movable portion of the air cylinder 80 and is vertically moved. Five free bears 84 are provided on the lower surface of the torch holding portion 82.
Is pressed smoothly and strongly so that the distance between the iron plate 15 and the tip of the torch is kept constant during cutting by the plasma torch 56, and the iron plate 15 is fixed so as not to shift. The plasma torch 56 is a well-known plasma torch that receives supply of oxygen and electric power from a plasma unit (not shown in FIG. 4) and ejects a high-temperature plasma stream from the tip of the torch to the iron plate 15 that is the base material.

The machining head 5 described above is assembled to the movable supporting member 50.
0 is slidably supported by the guide rail 86.
The movable support member 50 has a bearing assembly extending in the longitudinal direction on the back surface (not shown), and the upper and lower two rows of bearing assemblies are configured to fit in the upper and lower grooves 87 and 88 of the guide rail 86. FIG. 5 is a perspective view of the movable support member 50 as viewed from the back side. As shown in the figure, the rear surface of the movable support member 50 is provided with a Y-axis motor 51 via a speed reducer 52.
A toothed pulley 91 connected to and a two free pulleys 92, 93 are attached. This toothed pulley 9
1, a timing belt 95 meshes with each other, and the 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 the gate type frame 3
It is fixed to the fixing member 97 and the mounting member 98 housed in the legs on both sides of the, and since the mounting member 98 is further fixed to the fixing member 100 by the spring 99, a strong tension is applied by the spring 99. It is always stretched in a fixed state. Therefore, when the Y-axis motor 51 is rotated, the toothed pulley 91 is rotated and the entire movable support member 50 is smoothly moved in the Y-axis direction without causing backlash or the like.

The mechanism for transporting the gate-shaped frame 3 in the X-axis direction has substantially the same configuration as that for the Y-axis described above, and by rotating the X-axis motor 10, the timing belt and the teeth are rotated. The gate-shaped frame 3 is conveyed by a combination with the attached pulley. Next, the X-axis motor 10, Y
The configuration and operation of the control device that controls the plasma unit for supplying oxygen and the like for the shaft motor 51 and the processing head 5 or the plasma torch 56 will be described. FIG. 6 is a block diagram showing a schematic configuration of the control device 110.

As shown in the figure, the control unit 110 includes a well-known CPU 111, ROM 112, RAM 114, etc.
The bus 115 is configured as a so-called arithmetic logic operation circuit.
A floppy disk controller (FDC) 117, a display control circuit 120, which are connected to each other via a
A keyboard input port 121, an actuator drive circuit 123, and a motor control circuit 125 are provided.

The FDC 117 is a controller for driving and controlling the external floppy disk drive 130, and in this embodiment, it stores a program for generating a development drawing in accordance with the shape of the duct and basic data for calculating these. It controls the reading and writing of data from floppy disks. Display control circuit 1
20 is connected to the display device 132, and C
It is a circuit that displays a development view, displays a necessary message, and the like based on a command from the PU 111. The keyboard input circuit 121 is connected to the keyboard 135 and performs a process of delivering a command or data input from the keyboard 135 to the CPU 111.

The actuator drive circuit 123 is connected to the air cylinder 65 of the marking head 55, the solenoid 77, the air cylinder 80 of the cutting head 60 and the plasma unit 140 provided in the processing head 5. Therefore, the CPU 111 can freely turn on and off these air cylinders and the like via the actuator drive circuit 123. The plasma unit 140 is connected to a three-phase AC power supply (not shown), an air compressor, and an oxygen cylinder 141, and the controller 11
In response to the 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 above-described X-axis motor 10 and Y-axis motor 51 via the stepping motor drivers 143 and 145. Therefore, the CPU 111, via the motor control circuit 125,
The biaxial motors 10 and 51 can be freely controlled to control the processing head 5 to a desired position. In this embodiment, the X-axis and Y-axis motors 10 and 51 both use stepping motors, but the invention is not limited to stepping motors, and may be ordinary servomotors.

Next, in the duct material cutting device having the above-described structure, the process performed by the control device 110 when the iron plate 15 to be processed is processed for manufacturing a duct will be described. FIG. 7 is a flowchart showing a duct manufacturing processing routine executed by the control device 110.

When this routine is started, first, at step 200, 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 directly input from the keyboard 135, or may be input using a digitizer or the like in another control device having a CAD function. The duct shape once stored in the floppy disk may be input by controlling and reading the FDC 117. When the duct shape is input in this way, subsequently, a development drawing creation process and a process of assigning a set code to each expanded part are performed (step 210).

The development drawing processing is performed by the iron plate 15 to be processed.
And the shape of the duct to be manufactured, which is a process for creating a developed view with the highest yield, which is so-called graphic processing. The arrangement of the duct members cut out from the iron plate 15 by the above graphic processing is illustrated in FIG. As shown in the figure, two sets of duct members are developed and cut at the highest yield on the iron plate 15.

On the other hand, the process of giving a set code to each part is, in the case of a square duct, giving a series of codes to the parts which are usually developed into four sheets, for example, the first code.
As shown in FIG. 9, the phase number information 201c as drawn near the base of the duct member 15c is provided in each part of the duct of FIG.
"A-1" is added as the source information 202c and "15 × 20" and "source 20 × 15"
Is given. Where "15x20" and "original 20x"
Reference numeral 15 "represents the size of the opening of the front portion and the base portion when assembled as a duct.

Further, as the up / down left / right information 203c, "
"Left" is given, and the duct member 15c has the phase number information 201.
It can be seen that it forms the left side of a set of duct material provided with c "A-1". Also, as the connection information 204c "
W "is added. This connection information 204c is provided for the duct member 1 adjacent to the duct member 1 when assembled as a duct as shown in FIG.
It is shown that the goby fold 15w at the connection portion with 5a and 15b is double-folded, while "S" is added as the connection information 204a to the duct member 15a as shown in FIG. It is a fold.

As described above, the duct member 15c has the phase number information 201c, the original information 202c, the vertical direction information 203c,
A set code 200c including the connection information 204c is added. Here, in this embodiment, processing is performed so that the inner surface when assembled as a duct in the expanded graphic processing is the upper surface of the iron plate 15. The set 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 as the inside / outside information and further as the source / destination information.

For the next set of duct members, for example, the phase number information 201h "B-1" as drawn on the duct member 15h.
And a pair code 200h including other information similar to that described for the duct member 15c. still,
In this embodiment, the phase number information 201c and 201h also serve as connection information, and when the duct is assembled, "A-"
1 ”,“ B-1 ”Further, although not shown,“ C-1 ”,“ D ”
By connecting in alphabetical order such as "-1", it is possible to easily hang the duct without the need of collating drawings.

Further, for example, in each member constituting the first duct, "A-1" to "A-" are arranged in the vertical direction of the duct.
The code "4" is assigned to each part constituting the next duct by "B-
It is also possible to add phase number information such as 1 "to" B-4 "to indicate the vertical direction information at the same time.

After the above preparation, 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, the oil-based pen 54 descends and its pen tip comes into contact with the iron plate 15. Therefore, the process of drawing the set code is performed (step 230). In this process, while the solenoid 77 is turned on and off, the machining head 5 is moved in the X-axis and Y-axis directions to a position corresponding to the deployed position of each member forming the duct, and step 21
This is a process of drawing a group code assigned with 0.

When the drawing of the set code is completed, it is judged whether or not the iron plate 15 is cut (step 240), and if it is cut, the process proceeds to step 250 and thereafter. First, the air cylinder 65 is turned off to drive the marking head 55.
(Step 250), and then the air cylinder 8
When 0 is turned on, the cutting head 60 is lowered (step 260). After that, the plasma unit 140 is controlled via the actuator drive circuit 123, and the X-axis motor 10, Y is controlled via the motor control circuit 125.
The shaft motor 51 is driven to two-dimensionally drive the processing head 5 to cut the iron plate 15 (step 270). At that time, the cutting is performed according to the development drawing obtained in step 210. When all the cutting processing is completed in this way, the air cylinder 80 is turned off, the cutting head 60 is raised (step 280), and it is assumed that the duct manufacturing processing is completed, the process ends in "END" and the present routine is ended.

On the other hand, in step 240, the iron plate 15
If it is determined that the cutting of the
If is coated with resin, the process proceeds to step 300 to calculate the offset. This is because the center position of the oil-based pen 54 and the center position of the plasma torch 56 do not coincide with each other and there is an offset in both X-axis and Y-axis directions, as is apparent from FIG. Then, the data created for cutting is corrected for writing by the oil-based pen 54. When the correction of the data of the development view of each member constituting the duct is completed, the shape writing process is subsequently performed (step 3).
10). The shape writing process is performed by the cutting head 60.
Is the same as the cutting process (step 270) except that the marking head 55 is used instead of
The processing head 5 moves on the iron plate 15. That is,
Instead of cutting with the plasma torch 56, an oil-based pen 54
The cutting line is filled by. When the writing of the shapes of all the members constituting the duct is completed, the air cylinder 65 is turned off, the marking head 55 is raised (step 320), the process goes to "END", and this routine is ended.

According to the duct material cutting device of the present embodiment having the above-described structure, the processing head 5 can write and cut the set code, so that each member forming one duct can be cut. The advantage is that the combination after being released does not require labor. Therefore, even if each member is cut into pieces according to the development drawing with the highest yield, the pieces can be easily collected according to the phase number information, and the subsequent assembly process is not affected.

Further, when assembling the collected members for each set of ducts, it is sufficient to perform the work according to the original information, the vertical information, the inside / outside information, and the connection information, and it is not necessary to collate them with the drawings one by one. This is particularly effective for a duct member having a delicate shape change, and can significantly reduce the number of steps.

Further, in the present embodiment, when the iron plate 15 or the like to be processed is not suitable for cutting by the plasma torch 56, for example, a resin-coated plate or the like, the marking head 55 is used in addition to the writing of the set code. The cutting shape can be written, and the cutting by the manual cutter and the subsequent assembling work can be easily performed.

Moreover, since the marking head 55 and the cutting head 60 are arranged side by side on one movable instruction member 50, both the X-axis motor 10 and the cutting process (step 270) and the shape writing process (step 310) are performed. It is sufficient to drive and control the Y-axis motor 51 without increasing the number of parts. Further, when obtaining the data for writing the outer shape from the data of the developed shape for cutting, it suffices to execute a simple offset calculation (step 300).

In addition, in this embodiment, the marking head 5 is equipped with the gripping member 72 and the air cylinder 65.
Since 5 can be moved up and down independently, it is possible to write characters, symbols or lines using a contact type writing member such as an oil pen 54. As a result, even in a duct used in a clean room or the like, there is no concern that the written characters, symbols, etc. will peel off due to deterioration over time and dust will be generated. Even if it is used in a ventilation duct of a house / hospital, there is no fear of generating harmful gas. Further, even if hot air is passed through the inside like a smoke exhaust duct, characters and the like do not burn.

Since the springs 74 and 75 are provided, the oil-based pen 54 can write characters and the like while maintaining a proper contact state with the iron plate 15. The duct material is usually manufactured from a thin plate. However, the thin plate may be wavy when placed on the work table 1, and in particular, the thin plate supplied in a roll form is inevitable. On the other hand, according to the present embodiment, due to the above-described operation, even in such a case, characters or the like can be clearly written without fading. Moreover, for example, springs 74, 7 are provided at the top of the corrugation.
Since 5 contracts, the contact state between the tip of the oil-based pen 54 and the iron plate 15 is constant, and deterioration due to wear of the tip is prevented.

In addition, since the arm portion 70 holds and fixes the oil-based pen 54, when the ink of the oil-based pen 54 is exhausted or the felt portion at the tip is worn and characters cannot be written. Can be easily replaced. As a result, it has become possible to use a commercially available cheap and easily available felt-tip pen or the like.

In this way, by making it possible to use a felt-tip pen or the like, it becomes possible to write clear characters, symbols, lines, etc., and, in addition to the phase number information, source information, vertical information,
The inside / outside information and the connection information can be written as a set code on the plate material by a single drive control.

As an important configuration here, in step 230, the set code 200 is placed on the iron plate 15 prior to cutting.
A control process for writing a and the like is executed. As a result, the useful set code 200a or the like as described above is erroneously transferred to the adjacent duct member (for example, the set code 200a is 1 in FIG. 8).
There is no possibility of being filled in (on the right side of 5g), or being partially written because something that is intended to be written near the edge straddles the edge. In addition, the set code 2
When the oil-based pen 55 is moved to the writing position of 00a or the like, there is no risk of being scratched by anything, so that the oil-based pen 54 is not damaged by doing so. Further, since the characters can be written on the flat iron plate 15, the characters are not distorted. As a result, the useful set code 2 as described above
00a and the like can always be written accurately, and in addition, it is possible to sufficiently deal with writing of sophisticated and complicated information.

Further, in other detailed configurations, various useful actions and effects are performed. For example, by pressing the iron plate 15 with the ball bear 84 at the time of cutting,
The distance between the tip of the plasma torch 56 and the iron plate 15 can be kept constant. As a result, similar to the above, the corrugated thin plate can be smoothly cut by the action of the ball bear 84.

Further, in this embodiment, as the work table 1 on which the plate material to be processed is placed, a structure in which the beam members 22 to 33 and the supporting member SM are combined is adopted, and the supporting member SM is used as the beam member 22. Due to the structure in which the grooves are inserted into the grooves 33 to 33 alternately, the assembly and replacement thereof are extremely easy without impairing the function of mounting and fixing the iron plate 15 to be processed. In this embodiment, since the plasma torch 56 is used, the structure and the handling are simple, and highly accurate cutting processing is possible.

The embodiments of the present invention have been described above.
The present invention is not limited to these embodiments. For example, instead of the plasma torch, a laser or an electric discharge machining torch is provided, or instead of the portal frame 3, a machining head is mounted on an articulated arm. It is needless to say that the present invention can be implemented in various modes without departing from the scope of the present invention, such as the configuration provided with No. 5.

Further, together with the set code, the instruction of the construction method, for example, the information of the flange, the mets and the co-plate, the position of the rib,
It is also possible to further reduce the assembly man-hours by adding bending information and the like. As such an example, FIG. 11 shows a development view of a duct member with rib position information and a duct member with bending position information. The four duct members 15i-15l shown in the figure have been assembled and are shown in FIG.
The bent duct 16a is as shown in (a). 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 the rib 231 as shown in FIG. 12B is to be formed by folding back or pressing. Similarly, the rib position information 211j to 214j is provided to the duct member 15j and the duct member 1 is also provided.
Rib position information 211k to 214k is attached to 5k, and rib position information 211l to 214l is attached to the duct member 15l.

These pieces of rib position information show mutually related positions. When the bending duct 16a is assembled after pressing is performed in accordance with the rib position information 211i to 211l, a continuous rib 231 that makes one turn around the outer circumference is formed. To be done. Other rib position information 212i to 212l, 213
Similarly, ribs 23 of i to 213l and 214i to 214l are the same.
2, 233 and 234 are formed, and the positional relationship of each is calculated in the graphic processing (step 210) and added to the corresponding position.

As a result, the rib insertion work which has been conventionally performed on site is greatly simplified, and the number of assembling steps is significantly reduced. Further, the duct member 15n shown in FIG. 11 is assembled to form a circular opening 16c as shown in FIG.
Hopper-shaped duct 16b having an opening 16d and a rectangular opening 16d
Becomes For the duct member 15n, together with the set code 200n,
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 in the drawing can be easily formed. This bending position information 22
1n is also calculated and added in the graphic processing (step 210). Also, in the group code 200n, "10R" and "element 20x20" are used as the element information 202n.
It can be seen that the tip is circular and the base is square.

As a result, the duct 16b having a complicated shape as shown in the drawing can be easily assembled. In the cutting process, the cutting speed may be automatically determined according to the plate thickness required for each type such as a low speed duct, a high speed duct, a ventilation or smoke exhaust duct.
In the graphic processing, it is not always necessary to match the developed graphic with the inner and outer surfaces on the same surface, and the inner and outer surfaces may be inverted and cut so as to maximize the yield. It suffices to add some code such as ",""outer", etc., and the drawing position of the combination code may be other than the original part, and the origin may be represented by some code such as an arrow. Furthermore, the writing of the set code and the cutting or the writing of the outline may be performed for each member.

[0056]

As described in detail above, according to the present invention,
Since the cut-out duct constituent members are written with a set code indicating the phase number and connection of the members, it is possible to easily collect, distribute, combine, and hang each member, and to obtain the highest yield. Even if each member is cut from a good plate cutting position, it does not affect the subsequent assembly process.

Moreover, as long as the plate cutting position for improving the yield is determined, the writing position of the set code is automatically determined correspondingly. Therefore, no matter which plate cutting position is selected, the set code is set. There is no need to force the worker to decide the writing position of the.

As a result, according to the present invention, in cutting the duct material, in addition to improving the yield and facilitating the recovery of the members, it is possible to facilitate the preparation of the work data.

[Brief description of drawings]

FIG. 1 is a flowchart illustrating the configuration and operation of the present invention.

FIG. 2 is a perspective view showing a schematic configuration of a duct material cutting device as one embodiment of the present invention.

FIG. 3 is a perspective view showing a structure of a work table 1.

FIG. 4 is a perspective view showing details of a processing head 5.

FIG. 5 is a perspective view showing a moving mechanism of the processing head 5.

FIG. 6 is a block diagram mainly showing a configuration of a control device 110.

7 is a flowchart showing a duct manufacturing processing routine executed by control device 110. FIG.

FIG. 8 is a plan view exemplifying a duct member developed by graphic processing and arranged on an iron plate.

FIG. 9 is a plan view of a duct member exemplifying assigned set codes.

FIG. 10 is a perspective view showing a state of being assembled as one set of ducts.

FIG. 11 is a plan view of a duct member developed on an iron plate in another example.

12A is a perspective view of an assembled bent duct, FIG. 12B is a partial cross-sectional view showing the shape of ribs, and FIG. 12C is a perspective view of a hopper-shaped duct.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Work table, 3 ... Portal frame, 5 ... Processing head, 10 ... X-axis motor, 15 ... Iron plate, 15a-15
1, 15n ... Duct member, 50 ... Movable support member, 51 ...
Y-axis motor, 54 ... Oil-based pen, 55 ... Marking head, 56 ... Plasma torch, 60 ... Cutting head, 65, 80 ... Air cylinder, 74, 75 ... Spring, 7
7 ... Solenoid, 110 ... Control device, 200a, 200
c, 200h to 200l, 200n ... Group code.

Claims (2)

(57) [Claims] 1. A work table based on a developed shape of duct constituent members and a pair code composed of phase number information indicating that each duct constituent member is a pair at the time of assembly and connection information indicating a connection at the time of assembly. A duct material cutting method of cutting out a duct constituent member and writing the set code to a placed metal thin plate material, which is inputted when a developed shape of the duct constituent member is inputted. An arrangement for removing the duct constituent members on the thin plate material is determined based on the developed shape, and the writing position of the set code is automatically determined based on the determined arrangement result of each duct constituent member. A method for cutting duct material, characterized in that it is decided. 2. The work table is based on a developed shape of the duct constituent members and a set code composed of phase number information indicating that each duct constituent member forms a pair at the time of assembly and connection information indicating a connection at the time of assembly. A duct material cutting device for cutting out a duct constituent member and writing the set code with respect to a placed metal thin plate material, and a developed shape input means for inputting a developed shape of the duct constituent member, Plate removal position determining means for determining an arrangement for removing the duct constituent members on the thin plate material based on the input developed shape, and a set to be attached to each of the input duct constituent members Group code associating means for associating codes with each other, and a group code writing position determination for determining a writing position of the group code associated with each other based on the determined placement result of each duct component member. Duct material cutting apparatus being characterized in that a means.