JP6145336B2 - Automatic programming apparatus and method - Google Patents

Description

  The present invention relates to an automatic programming apparatus and method for creating a nesting program for placing a predetermined type of part in a workpiece and performing blank machining, and in particular, the degree of freedom of part nesting by an operator can be improved. The present invention relates to an automatic programming apparatus and method.

  In general, in a processing system having a processing machine such as a laser processing machine or a punch press, a nesting processing program for creating a blank by placing a predetermined type of part in a workpiece is created, and a processing operation is performed according to the processing program. How to do is known.

  In a nesting process in a conventional automatic programming apparatus, a direct arrangement method and an adjacent arrangement method are known.

  In the direct placement method, an operator selects a part (part) on a sheet with a mouse or the like on a nesting processing screen in an automatic programming device (PC), and drags and drops the desired part on the workpiece W. This is an arrangement position editing method in which the released position is the part placement position.

  The adjacent placement method is a method of selecting a part (part) on a sheet with a mouse or the like on a nesting processing screen in an automatic programming device (PC), and dragging and dropping from the position where the part is released. This is an editing method that automatically determines the placement position of a part at a close position.

  In this adjacent arrangement method, an empty area on the sheet is searched from the position where the part is released, the already arranged part shape is automatically recognized, and the adjacent part is automatically arranged at a position that is separated by a full width. If there is no free space, a warning is displayed with the part released.

  In this adjacent arrangement method, the position where the part is released is often not the part arrangement position.

JP 7-129223 A

  The nesting process of the direct arrangement method and the adjacent arrangement method has the following problems.

  First, in the nesting process using the direct placement method, if the parts overlap each other at the part placement position determined by the operator's selection and drag and drop, a warning is displayed and the operator notices. However, the operator has to manually rearrange the parts from the already-placed parts with a gap of a width, and the rearrangement requires skill.

  Further, in the nesting processing by the adjacent placement method, even if the operator releases the part to the expected position, the part is automatically rearranged from the release position, which may be different from the position desired by the operator.

  For example, even when it is desired to arrange at intervals wider than the full width, or to arrange at intervals slightly narrower than the full width, the result of automatic arrangement of the adjacent arrangement is the full width position. In such a case, it is necessary to change to the direct arrangement mode and re-arrange, and there is a problem that it takes time and effort.

  Further, when the part placement position is automatically determined by the adjacent placement method, it is difficult to predict where the part is placed, and the position may be greatly different from the position desired by the operator.

The present invention is for solving the above-mentioned problems, and the invention according to claim 1 performs nesting in which parts are arranged on a workpiece, and the workpiece is machined by a processing machine based on the nesting result. In a processing system to perform, an automatic programming device for creating a processing program for nesting of the processing machine,
An input means for inputting nesting conditions, information of parts to be input to nesting, and information of the workpiece used for nesting;
(A) a step of setting the position selected by the operator from the input means at the position set by the operator;
(B) A step of determining whether or not the part whose placement position is set in step (A) interferes with other parts;
(C) If it is determined in the step (B) that it does not interfere with the other parts, the step of determining whether the set arrangement position of the parts is a predetermined instability factor;
(D) Control means for controlling the step of determining the set arrangement position of the part when it is determined that the set arrangement position of the part is not a predetermined instability factor in the step (C). and, the possess,
The predetermined instability factors include a first instability factor having a problem after machining the workpiece, a second instability factor having a problem in molding the workpiece, and a product other than the workpiece dead zone. An automatic programming device comprising any one or more of a third instability factor that has an effect and a fourth instability factor that causes the width of the workpiece to sag depending on the size of the part. .

According to a second aspect of the present invention, in the case where the first instability factor causes the window extraction part inside the part to be carried out as scrap, the material and the part are connected in the window extraction part even after the completion of processing. 2. The automatic programming device according to claim 1, wherein the joint part is arranged.

In the invention according to claim 3 , the second instability factor is a case where the width of the part is secured, and the part is arranged at a position where the molding process of the other part is crushed by the molding process of the part. The automatic programming device according to claim 1, wherein the automatic programming device is a case of the automatic programming device.

In the invention according to claim 4 , in the region where the third instability factor deviates from the region where the part cannot be processed, but the clap rides on the mechanism and affects the accuracy of the product, The automatic programming device according to claim 1, wherein the parts to be processed are arranged .

The invention according to claim 5 is characterized in that the fourth instability factor is a case where a reference width is secured and the parts are arranged in an area where the width is sagging. An automatic programming device according to any one of claims 1 to 4 .

The invention according to claim 6 is an adjacent arrangement in which the arrangement position of the part is automatically determined when it is determined that the set arrangement position of the part is the predetermined instability factor in the step (C). The automatic programming device according to claim 1, wherein:

According to a seventh aspect of the present invention, there is provided a processing program for nesting of the processing machine in a processing system that performs nesting to place parts on the work and performs processing of the work by a processing machine based on a result of the nesting. An automatic programming method to create,
(A) The step of inputting the nesting conditions, the information of the parts to be input to the nesting and the information of the workpiece used for the nesting by the input means;
(B) A step of setting the part selected by the operator in the step (A) at a position set by the operator;
(C) determining whether or not the part whose placement position is set in step (B) interferes with other parts;
(D) If it is determined in step (C) that it does not interfere with the other parts, the step of determining whether the set placement position of the parts is a predetermined instability factor;
(E) when it is determined that the set placement position of the part in step (D) is not a predetermined instability factor, the step of determining the set placement position of the part,
The predetermined instability factors include a first instability factor having a problem after machining the workpiece, a second instability factor having a problem in molding the workpiece, and a product other than the workpiece dead zone. It includes one or more of a third instability factor that has an effect and a fourth instability factor that causes the width of the workpiece to sag depending on the size of the part .

  According to the present invention, except when there is a predetermined factor, by setting the position desired by the operator as the part placement position, the part placement position desired by the operator can be easily achieved, and the degree of freedom of parts nesting by the operator Will improve.

It is explanatory drawing which shows the outline of the laser processing system which implemented this invention. It is a schematic block diagram of the automatic programming apparatus shown in FIG. 4 is a flowchart showing a machining program creation operation for nesting of the automatic programming device 9. It is explanatory drawing of the machining program creation operation | movement of a nesting. It is explanatory drawing of the machining program creation operation | movement of a nesting. It is explanatory drawing of the machining program creation operation | movement of a nesting. It is explanatory drawing of the machining program creation operation | movement of a nesting. It is explanatory drawing of the machining program creation operation | movement of a nesting. It is explanatory drawing of the machining program creation operation | movement of a nesting. It is explanatory drawing of the machining program creation operation | movement of a nesting.

  FIG. 1 is an explanatory diagram showing an outline of a machining system embodying the present invention. In the present embodiment, a laser processing machine will be described as an example of the processing machine, but other processing machines such as a punch press may be used.

  As shown in FIG. 1, this processing system 3 is an automatic programming that creates a processing program for the laser processing machine 13 using information on parts to be manufactured in a database (storage means) 5 and data on a member to be processed (plate material). The machine 9 has an NC data by a machining program including a nesting created by the automatic programming device 9 is converted into drive data by the NC apparatus 11 and sent to the laser machine 13, and laser machining is performed according to the drive data. Various parts are controlled by the machine 13, and the workpiece (plate material) is laser-processed to produce predetermined parts (parts). The database 5 stores part shape data obtained by machining, data on the workpiece, and the like.

  FIG. 2 is a block diagram showing a schematic configuration of the automatic programming device 9 shown in FIG.

  As shown in FIG. 2, the automatic programming device 9 comprises a computer and has a CPU 15 to which a ROM 17 and a RAM 19 are connected. The CPU 15 further includes an input device 21 such as a keyboard and a display such as a display. A device 23 is connected. Further, the database 5 is connected to the CPU 15.

  In the automatic programming device 9, the CPU 15 uses the part shape data and workpiece data in the database 11 in accordance with an instruction from the input device 21 and uses the RAM 19 in accordance with the computer program from the ROM 17. A nesting processing program for the laser beam machine 13 as described later is created.

  Next, the processing operation and configuration of the laser processing machine 13 shown in FIG. 1 will be briefly described.

  The laser processing machine 13 shown in FIG. 1 has a processing table 25 on which a workpiece (workpiece member) W is placed, and X-axis guides 27A and 27B are provided on both sides of the processing table 25. A carriage 29 extending in the Y-axis direction is provided across the processing table 25 and the X-axis guides 27A and 27B. An X-axis ball screw 33 is screwed into one lower portion 31 of the carriage 29, the X-axis ball screw 33 is coupled to an X-axis motor Mx, and the lower portion 31 is slidably coupled to an X-axis guide 27A. The other lower portion 35 is slidably coupled to the X-axis guide 27B.

  A ball screw 37 that is rotated by a Y-axis motor My is provided on the upper surface of the carriage 29, and a Y-axis slider 39 is screwed to the ball screw 37, and the Y-axis slider 39 is rotated by a Z-axis motor Mz. A machining head 43 that is screwed onto the rotating ball screw 41 is provided.

  With this configuration, by driving the X-axis motor Mx, the carriage 29 is driven in the X-axis direction, and by driving the Y-axis motor My, the machining head 43 is moved on the carriage 29 in the Y-axis direction, and the Z-axis motor Mz. , The machining head 43 is moved in the Z-axis direction on the Y-axis slider 39, the machining head 43 is positioned at a predetermined cutting position, and a laser beam is emitted from the machining head 43 according to a nesting machining program described later. The workpiece W is cut while moving the processing head 43 in a predetermined direction while irradiating L.

  Next, the nesting machining program creation operation of the automatic programming device 9 shown in FIGS. 1 and 2 will be described with reference to FIGS.

  FIG. 3 is a flowchart showing the nesting machining program creation operation of the automatic programming device 9, and FIGS. 4 to 11 are explanatory diagrams of the nesting machining program creation operation.

  Prior to this nesting machining program creation operation, the operator inputs the nesting conditions, the part information to be input to the nesting and the information of the workpiece used for the nesting, through the input device 21 of the automatic programming device 9. Is done.

  First, in step 101 of FIG. 3, a nesting mode is input.

  Here, the operator inputs a mode selection instruction for performing the direct placement mode, the adjacent placement mode, or the direct adjacent placement mode from the input device 21 of the automatic programming device 9.

  That is, when the nesting processing program creation state is entered, the selection screen for the three nesting modes is displayed on the display device 23 of the automatic programming device 9, and any one of them is instructed by the operator.

  Here, the direct adjacent placement mode is a mode in which the position desired by the operator is set to the part placement position except when there is a predetermined factor, unlike the conventional direct placement mode and the adjacent placement mode.

  Next, in step 103, the automatic programming device 9 determines which nesting mode is instructed.

  If it is determined in step 103 that the direct placement mode or the adjacent placement mode is instructed, direct placement processing and adjacent placement processing are performed in steps 105 and 107, respectively. Here, the adjacent arrangement processing in step 107 will be described in detail later.

  Note that the direct placement process in step 105 is the same as that described in the section of the background art, and a description thereof will be omitted.

  Next, when it is determined in step 103 that the direct adjacent placement mode has been instructed, in step 109, a part (part) is selected, and the placement position of the selected part is set.

  That is, when the direct adjacent placement mode is instructed, a nesting processing screen is displayed on the display device 23 in the automatic programming device 9, and the operator selects a part (part) on the sheet with a mouse or the like on the nesting processing screen. Then, the part is released to a desired location on the workpiece W by drag and drop, and the position where the part is released becomes the set arrangement position of the part.

  For example, as shown in FIG. 4A, a nesting processing screen is displayed on the display device 23 of the automatic programming device 9, and on the nesting processing screen, as shown in FIG. The part (part) P1 on the sheet is selected by dragging and dropping the part P1 to a desired location on the work W, and the position where the part P1 is released is the set arrangement position of the part P1. Become.

  Next, in step 111, it is determined whether or not the set arrangement position of the parts released by the operator interferes with other parts.

  That is, the CPU 15 of the automatic programming device 9 determines whether or not the set placement position of the part released by the operator overlaps with the already placed part.

  Here, on the nesting processing screen of the display device 23 of the automatic programming device 9 as shown in FIG. 4A, when it is the set arrangement position of the part P1 as shown in FIG. It is determined that the set arrangement position does not overlap with the already arranged parts P2 to P5.

  Further, on the nesting processing screen of the display device 23 of the automatic programming device 9, when the set placement position of the part P1 is as shown in FIG. 4C, the set placement position of the part P1 is the already placed part. It is determined that it overlaps with P2.

  When it is determined that the set arrangement position of the part released by the operator in step 111 interferes with other parts, the operation is switched to the adjacent arrangement process in step 107, and as shown in FIG. On the nesting processing screen of the display device 23 of the automatic programming device 9, the placement prediction PI1 by the adjacent placement processing is displayed, and the part P1 is moved to the placement prediction PI1.

  Here, the automatic programming device 9 functions as a part interference determination unit.

  Next, if it is determined that the set placement position of the part released in step 111 does not interfere with other parts, is the set placement position of the part released by the operator a cause of instability in steps 113 to 119? It is determined whether or not.

  In other words, the CPU 15 of the automatic programming device 9 determines whether or not the set arrangement position of the parts released by the operator becomes an unstable factor.

  Here, the instability factor is the first instability factor when there is a problem after the workpiece is processed, the second instability factor is the third instability factor when there is a problem with the workpiece forming process. In the case where the product is affected outside the work dead zone, the fourth instability factor is that the width of the work is sunk by the size of the part.

  Accordingly, in step 113, it is determined whether or not the set arrangement position of the part released by the operator becomes the first instability factor, and the set arrangement position of the part released by the operator is not the first instability factor. In step 115, it is determined whether or not the set arrangement position of the part released by the operator becomes the second instability factor, and the set arrangement position of the part released by the operator is not the second instability factor. In step 117, it is determined whether or not the set arrangement position of the part released by the operator becomes the third instability factor, and the set arrangement position of the part released by the operator is not the third instability factor. In step 119, the set arrangement of the parts released by the operator Location whether the instability of the 4 is determined.

  Below, the 1st-4th instability factor is demonstrated.

  5 to 11 are explanatory diagrams of first to fourth instability factors in the nesting machining program creation operation.

  First, the first instability factor (when there is a problem after processing) is when the window extraction part inside the part is carried out as scrap by the supply / unloading and accumulating system, and the joint part ( This is a case where the material and the part are connected even after the processing is finished.

  In such a case, since the area where the parts are arranged is carried out as scrap, it is mixed with the scrap, and the scrap must be searched for, which places a burden on the subsequent process.

  That is, when the area of the part arrangement position released by the operator is carried out as scrap by the CPU 15 of the automatic programming device 9, it is determined that there is a first instability factor in actual processing. Here, it is determined by the CPU 15 of the automatic programming device 9 based on the information of the window opening portion inside the part to be carried out as scrap, which is processing information stored in advance.

  Here, on the nesting processing screen of the display device 23 of the automatic programming device 9, as shown in FIG. 5A, when the joint part P7 is arranged in the window opening W1 inside the part P6. The arrangement position of the part P6 is determined as the first instability factor.

  Then, if the set placement position of the part released by the operator in step 113 is determined to be the first instability factor, the process switches to the adjacent placement processing in step 107, and the adjacent placement processing causes FIG. As shown in c), the placement prediction PI2 by the adjacent placement processing is displayed on the nesting processing screen of the display device 23 of the automatic programming device 9, and the part P7 is moved to the placement prediction PI2.

  The second instability factor (when there is a problem with the molding process) is when the width of the part is secured, and the part to be molded is placed at a position where the molding process of the other part is crushed by the part molding process. This is the case.

  In such a case, the machining order cannot be avoided, and even if the machining order is changed, the molding process destroys the molding process of other parts. However, in one part, the possibility that the forming process crushes other forming processes in the part is not considered, but the possibility is taken into account when creating the part.

  That is, the CPU 15 of the automatic programming device 9 determines that there is a second instability factor when the arrangement position of the part to be molded released by the operator is a position where the molding process of other parts is crushed. .

  Here, on the nesting processing screen of the display device 23 of the automatic programming device 9, as shown in FIG. 6 (a), the part P8 to be processed is secured in the width of the part, but the forming process F1. Therefore, when the molding process F2 of the other part P9 is disposed at a position where it is crushed, the arrangement position of the part P8 is determined as the second instability factor. Here, it is determined by the CPU 15 of the automatic programming device 9 based on the information of the forming process F1 of the part P8 and the information of the forming process F2 of the part P9 which are the processing information stored in advance.

  Then, when it is determined that the set arrangement position of the part released by the operator in step 115 is the second instability factor, the process is switched to the adjacent arrangement process in step 107, and the adjacent arrangement process is performed as shown in FIG. As shown in c) and (d), the placement prediction PI3 by the adjacent placement processing is displayed on the nesting processing screen of the display device 23 of the automatic programming device 9, and the part P8 is moved to the placement prediction PI3.

  The third instability factor (if the product is affected outside the dead zone) is out of the area where the machine cannot process the machine (dead zone), but the clamp C rides on the mechanism D This is when the parts to be machined are placed in an area that affects the accuracy of the product. In such a case, processing will affect the accuracy of the product.

  In other words, the CPU 15 of the automatic programming device 9 is located at a position where a part to be processed released by the operator is out of an area where the processing machine cannot be processed (dead zone). If it is an area that rises and affects the accuracy of the product, it is determined that there is a third instability factor. Here, it is determined by the CPU 15 of the automatic programming device 9 based on the position information of the clamp C and the mechanism D, which are machining information stored in advance.

  Here, on the nesting processing screen of the display device 23 of the automatic programming device 9, as shown in FIG. 7A, the part P10 to be processed is out of the region (dead zone) where the processing machine cannot process. However, when the clamp C rides on the mechanism D and is arranged in an area that affects the accuracy of the product, the arrangement position of the part P10 is determined as the third instability factor.

  FIG. 8 is a side view showing how the clamp C rides on the mechanism D due to the arrangement of the parts P10 shown in FIG. 7 and affects the accuracy of the predetermined part E of the product.

  Then, when it is determined that the set placement position of the part released by the operator in step 117 is the third instability factor, the process is switched to the adjacent placement processing in step 107, and the adjacent placement processing is performed as shown in FIG. As shown in c) and (d), the placement prediction PI4 by the adjacent placement processing is displayed on the nesting processing screen of the display device 23 of the automatic programming device 9, and the part P10 is moved to the placement prediction PI4.

  The fourth instability factor (when the sag portion sags) is when the reference sword width is secured and when the parts are arranged in an area where the sag portion sags. In such a case, the sagging portion comes into contact with the mechanism, which may cause unstable machining in actual machining.

  In other words, the CPU 15 of the automatic programming device 9 secures a reference width for the arrangement position of the part to be processed and released by the operator, but the sagging part is sagging and the sagging part touches the mechanism or the like. If this is a problem, it is determined that there is a fourth instability factor.

  Here, as shown in FIG. 9 (a), the CPU 15 of the automatic programming device 9 calculates the deflection amount of the sandwiched portion 45 on the basis of information such as the weight, length L, width W1, etc. of the sandwiched portion 45. Then, it is determined whether or not the amount of deflection of the portion 45 is not a problem after processing.

  Then, when the calculated deflection amount of the half portion 45 becomes a problem after processing, it is determined as a fourth instability factor.

  FIG. 10 is a side view showing a state in which the sandwiched portion 45 is sagging due to the arrangement of the part P11 shown in FIG.

  Then, when it is determined that the set arrangement position of the part released by the operator in step 119 is the fourth instability factor, the process is switched to the adjacent arrangement process in step 107, and the adjacent arrangement process is performed as shown in FIG. As shown in c) and (d), the placement prediction PI5 by the adjacent placement processing is displayed on the nesting processing screen of the display device 23 of the automatic programming device 9, and the part P11 is moved to the placement prediction PI5.

  Next, when the arrangement position of the part released by the operator in step 119 is not the fourth instability factor, the arrangement position of the part released by the operator is determined in step 121.

  As described above, according to the present embodiment, unless there is interference with other parts and the first to fourth instability factors, the position desired by the operator is set as the arrangement position of the part. It is possible to easily achieve the part placement position.

  Therefore, the degree of freedom of parts nesting by the operator is improved.

  The present invention is not limited to the embodiments of the invention described above, and can be implemented in other modes by making appropriate modifications.

  For example, in the above embodiment, laser processing has been described as an example, but the present invention is not limited to this and can be applied to punch processing.

DESCRIPTION OF SYMBOLS 3 ... Processing system 5 ... Database 7 ... Laser processing machine 9 ... Automatic programming apparatus 11 ... NC apparatus 13 ... Laser processing machine 15 ... CPU
17 ... ROM
19 ... RAM
DESCRIPTION OF SYMBOLS 21 ... Input device 23 ... Display device 25 ... Processing table 27A ... X-axis guide 27B ... X-axis guide 29 ... Carriage 31 ... Lower part 39 ... Y-axis slider 43 ... Processing head F1, F2 ... Forming process P1-P11 ... Parts PI1- PI5 ... Placement prediction

Claims (7)

In a processing system for performing nesting to place parts on a workpiece and processing the workpiece by a processing machine based on a result of the nesting, an automatic programming device for creating a processing program for nesting of the processing machine,
An input means for inputting nesting conditions, information of parts to be input to nesting, and information of the workpiece used for nesting;
(A) a step of setting the position selected by the operator from the input means at the position set by the operator;
(B) A step of determining whether or not the part whose placement position is set in step (A) interferes with other parts;
(C) If it is determined in the step (B) that it does not interfere with the other parts, the step of determining whether the set arrangement position of the parts is a predetermined instability factor;
(D) Control means for controlling the step of determining the set arrangement position of the part when it is determined that the set arrangement position of the part is not a predetermined instability factor in the step (C). And having
The predetermined instability factors include a first instability factor having a problem after machining the workpiece, a second instability factor having a problem in molding the workpiece, and a product other than the workpiece dead zone. An automatic programming device comprising one or more of a third instability factor that has an effect and a fourth instability factor that causes the width of the workpiece to sag depending on the size of the part. The first instability factor is that when the window extraction part inside the part is carried out as scrap, a joint part in which the material and the part are connected is arranged in the window extraction part even after the processing is completed. The automatic programming device according to claim 1, wherein The second instability factor is a case where the width of the part is secured and the part is arranged at a position where the molding process of the other part is crushed by the molding process of the part. The automatic programming device according to claim 1. Although the third instability factor deviates from the area where the part cannot be processed, the part to be processed is arranged in an area where the clap rides on the mechanism and affects the accuracy of the product. The automatic programming apparatus according to claim 1, wherein the automatic programming apparatus is a case where the automatic programming apparatus is used. 5. The method according to claim 1, wherein the fourth instability factor is a case where a reference width is secured and the part is arranged in a region where the width is sagging. 6. The automatic programming device described in 1. When it is determined in the step (C) that the set placement position of the part is the predetermined instability factor, the placement position of the part is an adjacent placement automatically determined. Item 6. An automatic programming device according to any one of Items 1 to 5. An automatic programming method for creating a machining program for nesting of the processing machine in a processing system that performs nesting to place parts on a work and processes the work by a processing machine based on a result of the nesting. ,
(A) The step of inputting the nesting conditions, the information of the parts to be input to the nesting and the information of the workpiece used for the nesting by the input means
(B) A step of setting the part selected by the operator in the step (A) at a position set by the operator;
(C) determining whether or not the part whose placement position is set in step (B) interferes with other parts;
(D) If it is determined in step (C) that it does not interfere with the other parts, the step of determining whether the set placement position of the parts is a predetermined instability factor;
(E) when it is determined that the set placement position of the part in step (D) is not a predetermined instability factor, the step of determining the set placement position of the part,
The predetermined instability factors include a first instability factor having a problem after machining the workpiece, a second instability factor having a problem in molding the workpiece, and a product other than the workpiece dead zone. An automatic programming method comprising one or more of a third instability factor having an influence and a fourth instability factor in which the width of the workpiece is reduced depending on the size of the part.

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