JP4334180B2 - Collaborative machining data creation method and system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a coordinated machining data creation method and system, and more specifically, control data for controlling each machine (for example, a peripheral device) arranged on a sheet metal machining line, and control data for an NC machine tool. The present invention relates to a linked machining data creation method and a system thereof.
[0002]
[Prior art]
In general, for example, in an automatic programming device 701 provided in an office as shown in FIG. 7, a process 703 for dividing a product shape into part shapes and creating a developed shape of the part shape is performed. Then, a processing machine determination process 705 is performed. Subsequently, in the case of taking a large number of pieces, a nesting process 707 is performed to arrange a plurality of developed part shapes in a sheet shape. To this, sheet thickness, material, sheet size information and the like are added, and sheet information creation processing 709 is executed.
[0003]
Then, a G code program creation process 711 is executed. Subsequently, the G code program is transmitted to the NC machine tool 715 side. The NC machine tool 715 processes the sheet based on the G code program. At this time, the information of the schedule data 721 is read, and the carry-in device 717 takes in the sheet to be used as appropriate from the shelf. Finally, the cut product, the remaining material, and the like are removed from the NC processing machine 715 by the carry-out device 719.
[0004]
[Problems to be solved by the invention]
Such conventional control data creation methods have the following problems. That is, when an interruption work (processing) is entered during machining, the interruption work is entered after machining all products from the currently processed sheet. In this case, there is a problem that it takes time until the interruption work is started. Furthermore, there is a problem that the number of sheets stored in the schedule data has to be changed.
[0005]
In addition, for example, if an interrupt job is entered after the third piece of product is processed, the original sheet must be set after the interrupt job has been completed, and it is necessary to advance to the top of the fourth piece by idling. It was. Further, when the machining is stopped immediately in the middle of the third piece and interrupt work is performed, the product of the third piece becomes defective when returning from the interrupt work.
[0006]
[Means for Solving the Problems]
The present invention has been made in view of the above-described problems, and includes a carry-in device for taking out a sheet from a shelf for storing a sheet having a predetermined plate thickness, material, and size, and an NC machine tool for cutting the sheet. In the coordinated machining data creation method for creating coordinated machining data that is control data that takes into account the coordination of operation with the unloading device that unloads the material after cutting,
A nesting data creation step of creating nesting data in which a developed part shape that is a developed shape of a plurality of parts cut from the sheet is arranged in a sheet shape displayed on the display unit;
A collaborative machining data creation step for creating collaborative machining data associating the nesting data with schedule data which is information specifying where the sheet is stored on the shelf;
A line control step for performing control by associating operations of the carry-in device, the NC machine tool, and the carry-out device based on the cooperative machining data ;
The sheet shape and the developed part shape data of the parts arranged in the sheet shape are data of a three-dimensional solid model, and the developed part shape data is the surface data and the lines constituting the outer shape of the surface. Data and
When the cutting process is interrupted, it is desirable to store the line data to be processed and determine how far the process has been performed based on the line data.
[0009]
It is preferable to include a step of rearranging the developed part shape arranged in the sheet shape when the cutting process is interrupted.
[0010]
And operation | movement of the carrying-in apparatus which takes out a sheet | seat from the shelf which stores the sheet | seat which is a board | plate material of predetermined | prescribed board thickness, material, and a size, NC machine tool which cut | disconnects the said sheet | seat, and the carrying-out apparatus which carries out the material after cutting | disconnection In the coordinated machining data creation system that creates coordinated machining data that is control data that takes into account coordination,
Nesting data creating means for creating nesting data in which a developed part shape, which is a developed shape of a plurality of parts cut from the sheet, is arranged in a sheet shape displayed on the display unit;
Collaborative machining data creation means for creating collaborative machining data associating the nesting data with schedule data that is information specifying where the sheet is stored in the shelf;
Line control means for performing control in association with the operation of the carry-in device, the NC machine tool, and the carry-out device based on the cooperative machining data ;
The sheet shape and the developed part shape data of the parts arranged in the sheet shape are data of a three-dimensional solid model, and the developed part shape data is the surface data and the lines constituting the outer shape of the surface. Data and
When the cutting process is interrupted, it is preferable to store the line data to be processed and determine how far the process has been performed based on the line data.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings. In this example, the NC processing machine is assumed to be a laser processing machine.
[0012]
FIG. 1 shows a schematic configuration of the cooperative machining data creation system 1.
[0013]
The collaborative machining data creation system 1 edits graphic data in order to create collaborative machining data (assuming machining data linked with schedule data in this example) by an automatic programming device 3 provided in the office. Do. That is, the development process 101 develops the part model divided from the product model to create a developed part shape (a three-dimensional developed part model or a two-dimensional developed part planar shape). Subsequently, a processing machine (for example, a laser processing machine) is determined by a processing machine determination process 103.
[0014]
In the case of taking a large number of pieces, the nesting process 105 nests and arranges the developed part shape into a sheet shape (a three-dimensional sheet model or a two-dimensional sheet shape). On the other hand, the sheet information creation processing 107 creates information such as the sheet size, plate thickness, and material.
[0015]
As a result, information 109 indicating where the simple product model 111 is arranged in the sheet model STA is created. A simple product model is a three-dimensional solid model.
[0016]
Subsequently, the schedule data stored in the schedule memory 37 and the developed part shape (which is also a mere product model) arranged in a sheet shape are associated with each other to create cooperative processing data (also a product model). The linked machining data is stored in the linked machining data memory 39.
[0017]
In other words, linked machining data (product model) is information necessary to create data for machining because schedule data is associated with a sheet shape in which a plurality of developed part shapes are nested and arranged. The one that includes all. The schedule data is data for specifying where the sheet is stored on the shelf.
[0018]
The machining line 9 (including the carry-in machine 47, the NC machine tool 49, and the carry-out machine 51) is controlled by the linked machining data, and actual machining is performed.
[0019]
At this time, since schedule data is associated, automatic control can be performed in consideration of the storage position on the shelf, the number of stored sheets, the take-out of the material after cutting, and the like.
[0020]
FIG. 2 shows a configuration of each process of the cooperative machining data creation system 1. The cooperative machining data creation system 1 includes an automatic programming device 3 that performs nesting of a developed part shape into a sheet shape and the like, and a controller 5 that controls a machine that cuts the developed part from the sheet. . The automatic programming device 3 and the controller 5 can communicate with each other by a communication system 7 such as a LAN. The controller 5 is connected to a processing line 9.
[0021]
The automatic programming device 3 and the controller 5 are made of a computer, and include an input / output device, a display screen, and a computer main body.
[0022]
The automatic programming device 3 includes a CAD unit 11 that edits a figure (for example, a three-dimensional model of a product), a display unit 13 that displays a figure to be operated, and an input / output unit 15 that performs input / output processing of information. I have. The developed part shape created by the CAD unit 11 is stored in the developed part shape memory 17. Sheet information (for example, sheet thickness, material, size, etc.) input from the input / output unit 15 is stored in the sheet information memory 19 (sheet information may be automatically extracted from a three-dimensional sheet model. ).
[0023]
The automatic programming device 3 stores a nesting unit 21 that arranges a plurality of developed part shapes into a sheet shape in consideration of efficiency, nesting data that is a sheet shape, and a developed part shape that is nested and arranged in the sheet shape. Nesting data memory 23 and a transmission unit 25 that reads nesting data and transmits it to the controller 5.
[0024]
The controller 5 includes a receiving unit 27 that receives transmitted nesting data, a nesting data memory 29 that stores received nesting data, and NC data that stores NC data related to interrupt processing when interrupt processing is performed. A memory 31 and a display panel 33 for operating the controller 5 and the like are provided.
[0025]
Furthermore, the controller 5 includes a linked machining data creation unit 35, a schedule data memory 37, and a linked machining data memory 39.
[0026]
The cooperative machining data creation unit 35 reads nesting data from the nesting data memory 29 and reads schedule data from the schedule data memory 37. Then, linked machining data in which the nesting data and the schedule data are associated with each other is created and stored in the linked machining data memory 39. The schedule data stored in the schedule data memory 37 can be created by the operator from the display panel 33. On the other hand, schedule data created by another computer or the like may be installed in the schedule data memory 37.
[0027]
Please refer to FIG. 3 and FIG. FIG. 3 shows a state in which the developed part shapes BMA and BMB (in the case of the three-dimensional model) are arranged in the sheet shape STA (in the case of the three-dimensional model). A developed part shape BMA is arranged in the sheet shape STA. This is one in which a plurality of developed part shapes BMA are arranged on the sheet shape STA. The reference point PA of the developed part shape BMA is arranged according to the point PA1 on the sheet shape STA. Similarly, the developed part shape BMA is arranged with PA2 and PA3 as reference points. Thereby, the position with respect to the reference point PT on the sheet shape STA of the deployed developed part shape BMA can be calculated.
[0028]
On the other hand, the developed part shape BMA includes a plane PLA having a cut shape. The plane PLA includes line segments LA1, LA2, LA3, and LA4. The locus of laser processing can be calculated from the start point and end point of each line segment (LA1, LA2, LA3, and LA4).
[0029]
Similarly, a developed part shape BMB (three-dimensional solid model) is arranged in the sheet shape STA. The reference point PB of the developed part shape BMB is arranged according to the point PB1 on the sheet shape. Thereby, the position with respect to the reference point PT on the sheet shape STA of the deployed part shape BMB can be calculated.
[0030]
On the other hand, the developed part shape BMB includes a surface PLB which is a cut shape. The plane PLB includes line segments LB1, LB2, LB3, LB4, LB5, and LA6. Then, the locus of laser processing can be calculated from the start point and end point of each line segment (LB1, LB2, LB3, LB4, LB5, and LA6).
[0031]
Furthermore, since the developed part shapes BMA and BMB are three-dimensional solid models, for example, determination of the inside and outside of the planes PLA and PLB can be easily made by a program. Thereby, the approach position of laser processing can be determined automatically.
[0032]
FIG. 4 shows a file layout of schedule data. This file layout includes the following items: That is, a number item 401, a sheet name item 403, a stored number item 405, a shelf position item 407, and other items 409.
[0033]
As described above, since the cooperative machining data is associated with the sheet shape, the developed part shape, and the schedule data, it is possible to perform control in which the operations of the carry-in device 47, the NC machine tool 49, and the carry-out device 51 are associated. . For example, in the created cooperative processing data, line segments (LA1 to LA4 in FIG. 3 and the like) that are laser processing trajectories are arranged in the processing order. Then, when one sheet processing is completed, control data indicating where on the shelf the sheet is to be taken out is added. If this is executed in a sequence, predetermined processing can be performed.
[0034]
Reference is again made to FIG. The controller 5 further includes a line control unit 41, an interrupt management unit 43, and a cooperative machining data submemory 45.
[0035]
The line control unit 41 extracts linked machining data from the linked machining data memory 39 and controls the actual line.
[0036]
When there is a processing request for another product (deployed part) during the processing of the product (deployed part), the interrupt management unit 43 displays the data of how far the product has been processed so far. Store in the sub-memory 45.
[0037]
Further, the interrupt management unit 43 reads the NC data of the interrupted processing and outputs it to the cooperative processing data memory 39. Thereby, interrupt processing can be executed.
[0038]
The processing line 9 was cut with a carry-in device 47 for carrying a sheet from a shelf for storing the sheet, and an NC machine tool 49 (laser processing machine, NC turret punch press, etc.) for cutting a developed part from the sheet. And a carry-out device 51 for taking out the developed parts and the like.
[0039]
5 and 6 show the operation of the coordinated machining data creation system 1.
[0040]
In step S501, a sheet metal processor receives an order for a sheet metal product production request from a sheet metal product production requester. At this time, a three-sided view of the ordered product is received by electronic data or the like.
[0041]
In step S503, a CAD operator of a sheet metal processor creates a three-dimensional model of the product from the three views.
[0042]
In step S505, the process is divided into a plurality of component models so that the processing can be performed efficiently. Then, each of the component models is expanded in consideration of bending elongation and the like, and a development view is created.
[0043]
In step S517, an NC processing machine (for example, a laser processing machine, an NC turret punch press, etc.) for cutting the developed part from the sheet is determined.
[0044]
In step S519, sheet information which is data such as the material of the sheet metal, the sheet thickness, and the size in the XY direction is created.
[0045]
In step S511, the nesting unit 21 linked to the CAD unit 11 automatically creates data for cutting a plurality of developed parts developed as shown in a development view from a sheet of sheet metal having a predetermined size and thickness. The developed part shape is arranged in a sheet shape (creation of nesting data). At this time, it is arranged in consideration of the yield.
[0046]
In step S513, the transmission unit 25 transmits the created nesting data from the automatic programming device 3 to the controller 5.
[0047]
In step S 515, the receiving unit 27 provided in the controller 5 receives nesting data and stores it in the nesting data memory 29.
[0048]
In step S 517, the cooperative machining data creation unit 35 reads nesting data from the nesting data memory 29 and reads schedule data from the schedule data memory 37. The linked machining data is created by associating the two and stored in the linked machining data memory 39.
[0049]
In step S519, the line control unit 41 reads the linked machining data and processes the product (part). Note that the schedule data is rewritten when the sheet is exchanged during processing.
[0050]
In step S521, it is determined whether there is another interrupt processing during the processing of the product (part). When it is determined that there is another interrupt, the process proceeds to step S523. If it is determined that there is no other interrupt, the process proceeds to step S529.
[0051]
In step S523, processing of the processing line (NC processing machine 49, loading device 47, unloading device 51, etc.) is temporarily stopped. Subsequently, the machining content up to immediately before the stop is stored in the linked machining data sub-memory 45. At this time, it is possible to determine how far the processing has been performed by storing the line segment to be processed of the developed part shape in the memory. Please refer to FIG. The developed part shape BMA includes a surface PLA. The plane PLA includes line segments LA1, LA2, LA3, and LA4. In the linked machining data, line segments (LA1 to LA4, etc.) are arranged in the machining order. The line control unit 41 creates machining data (for example, G code) while extracting the line segments from the linked machining data memory 39 one by one. Then, when the line segment LA3 is extracted and the machining is interrupted during processing, the line segment LA3 is stored in the memory. Thereby, it turns out that the process was performed up to the line segment LA3.
[0052]
Subsequently, when the remaining material is temporarily stored in the shelf, the interrupt management unit 43 rewrites the schedule data. As a result, it is possible to create cooperative processing data that takes into account the new rewritten schedule data when the processing is resumed.
[0053]
In step S525, interrupt processing is performed. When performing this interrupt processing, the receiving unit 27 receives the NC data for interrupt processing and stores it in the NC data memory 31. Then, the interrupt management unit 43 temporarily stores the linked machining data stored in the linked machining data memory 39 in the linked machining data sub-memory 45. The NC data is output to the linked machining data memory 39, and the line control unit 49 performs interrupt machining based on the NC data.
[0054]
In step S527, the original processing is restored. That is, when interrupt machining is completed, the NC data for interruption machining stored in the linkage machining data memory 39 is deleted, and at the same time, the linkage machining data stored in the linkage machining data sub-memory 45 is temporarily stored in the linkage machining data. Move to memory 39. As described above, it can be identified by the line segment how far it has been processed from the linked processing data. Subsequently, the line control unit 41 reads the linked machining data and resumes machining. At this time, the position of the sheet stored in the shelf can be specified because the schedule data is rewritten.
[0055]
In addition, it is possible to improve the cutting time by nesting the unprocessed developed part model again.
[0056]
In step S529, the processing process ends. Then, the carry-out device 51 acquires a processing end trigger, and carries out the remaining material remaining after the cutting. When the remaining material is stored on the shelf, the schedule data is rewritten.
[0057]
In addition, this invention is not limited to the example of the embodiment mentioned above, It can implement in another aspect by adding an appropriate change.
[0058]
【The invention's effect】
As described above, according to the linked machining data creation method according to the present invention, when an interruption work (machining) is entered, an interruption work is entered without machining all the products arranged on the sheet being machined. Can do. For this reason, there is an effect that it does not take time until the interruption work is started.
[0059]
Since the schedule data and the nesting data are associated with each other, the schedule data can be automatically changed according to the processing progress. For this reason, there is an effect that an interruption processing sheet take-out process and the like can be automatically performed.
[0060]
Since the sheet model and the developed part model are three-dimensional solid models, data such as plate thickness and shape can be automatically extracted, and the approach position and the like can be automatically determined.
[Brief description of the drawings]
FIG. 1 is a schematic diagram showing a schematic configuration of a coordinated machining data creation system.
FIG. 2 is a schematic diagram showing an outline of each process of the coordinated machining data creation system.
FIG. 3 is an explanatory diagram illustrating a simple product model.
FIG. 4 is an explanatory diagram for explaining schedule data;
FIG. 5 is a flowchart illustrating the flow of a coordinated machining data creation system.
6 is a flowchart subsequent to FIG.
FIG. 7 is a conventional diagram showing a conventional method for creating machining data.
[Explanation of symbols]
1 Collaborative machining data creation system 3 Automatic programming device 5 Controller 7 LAN
9 Processing line

Claims (3)

Coordination of operations of a carry-in device that takes out a sheet from a shelf that stores sheets that are plates of a predetermined thickness, material, and size, an NC machine tool that cuts the sheet, and a carry-out device that carries out the cut material In the linked machining data creation method that creates linked machining data that is control data that takes into account
A nesting data creation step of creating nesting data in which a developed part shape that is a developed shape of a plurality of parts cut from the sheet is arranged in a sheet shape displayed on the display unit;
A collaborative machining data creation step for creating collaborative machining data associating the nesting data with schedule data which is information specifying where the sheet is stored on the shelf;
A line control step for performing control by associating operations of the carry-in device, the NC machine tool, and the carry-out device based on the cooperative machining data ;
The sheet shape and the developed part shape data of the parts arranged in the sheet shape are data of a three-dimensional solid model, and the developed part shape data is the surface data and the lines constituting the outer shape of the surface. Data and
A linked machining data creation method characterized in that when cutting is interrupted, line data to be machined is stored, and to what extent machining has been performed is determined based on the line data. 2. The cooperative machining data creation method according to claim 1, further comprising a step of rearranging the developed part shape arranged in the sheet shape when the cutting process is interrupted. Coordination of operations of a carry-in device that takes out a sheet from a shelf that stores sheets that are plates of a predetermined thickness, material, and size, an NC machine tool that cuts the sheet, and a carry-out device that carries out the cut material In the coordinated machining data creation system that creates coordinated machining data that is control data that takes into account
Nesting data creating means for creating nesting data in which a developed part shape, which is a developed shape of a plurality of parts cut from the sheet, is arranged in a sheet shape displayed on the display unit;
Collaborative machining data creation means for creating collaborative machining data associating the nesting data with schedule data that is information specifying where the sheet is stored in the shelf;
Line control means for performing control in association with the operation of the carry-in device, the NC machine tool, and the carry-out device based on the cooperative machining data ;
The sheet shape and the developed part shape data of the parts arranged in the sheet shape are data of a three-dimensional solid model, and the developed part shape data is the surface data and the lines constituting the outer shape of the surface. Data and
When the cutting process is interrupted, the line data to be processed is stored, and how far the processing has been performed is determined based on the line data.

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