JP2012158089A - Device and program for generating cad data, and storage medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To generate three dimensional CAD data of a structure in each step of process.SOLUTION: A CAD data generation device 100 includes: a CAD obtaining part 111 for obtaining three-dimensional CAD data including three-dimensional objects; a memory part 150 for storing work process control data specifying a plurality of work processs and the order of the work processs, and a comparison table for associating the three-dimensional objects with each work process; a work process obtaining part 111 for obtaining a work process, a work process extraction part 112 for extracting work processs before the work process, as a group of first work processs, from the work process control data; a CAD data extraction part 112 for extracting CAD data, by referring to the comparison table, from the three-dimensional CAD objects as a group of first three-dimensional objects by specifying the three-dimensional objects associated with a group of the first work processs; and a CAD data generation part 113 for generating, as three-dimensional CAD data for a three-dimensional object model, three-dimensional CAD data including the group of the first three-dimensional objects.

Description

  The present invention relates to a CAD data generation device, a CAD data generation program, and a storage medium, and more particularly to a CAD data generation device, a CAD data generation program, and a storage medium that generate three-dimensional CAD data.

  Conventionally, in product development and structure design, several prototypes are created at the design stage and development stage to evaluate the appearance and performance. The most primitive prototype model includes a clay model made of clay and a wood model made by cutting wood. However, such model production has problems such as manpower, time and cost, poor reproducibility, and too much dependence on the skill of the model craftsman. Now that computer technology has advanced in place of the conventional prototype model production technology, the rapid development of the prototype product is created using 3D CAD data for the developed product, and a prototype model is created using this 3D CAD data. A technology called “typing” has been developed and put into practical use. This is a technique for creating a target “stereoscopic model” from three-dimensional CAD data at extremely high speed and low cost without manpower and time.

  A typical technique for rapid prototyping is the “layer fabrication method”, which is based on the three-dimensional CAD data of an object and slice data (to be precise, a thin plate having a slight thickness constituting the object). The three-dimensional object (three-dimensional model) is formed by stacking the sliced data one layer at a time. And what is put to practical use in the layered modeling method is broadly divided into “photocontrast method” in which a photocurable resin is solidified with a laser, and a solidifying agent / binder supplied by an ink jet method or the like. There is a “powder-fixing-type lamination method” in which the shape is solidified, but the latter is superior in terms of low cost, high speed, and colorization. Regarding the “powder fixing type laminating method”, several related patents have been filed and acquired, and three-dimensional printers using the same have been put on the market. For example, as a conventional technique, there is a “method and apparatus for manufacturing a model of a three-dimensional object” (see Patent Document 1).

JP-T-2004-538191

  Conventionally, the focus has been on modeling a target three-dimensional object more accurately, cheaply, and in a shorter time from already created three-dimensional data. This means that if the product being developed is a single product such as a machine part or a mobile phone terminal, that is, a model of a relatively small article, there is not much problem with setting such a development target. “Optical imaging” is suitable for various applications.

  On the other hand, in recent years, the “powder fixing type laminating method” has been technically innovative, and it has become possible to form a “colored three-dimensional object” at an extremely low cost and at a high speed. For this reason, application to various fields other than shaped articles such as machine parts is being expected.

  However, in the case of a three-dimensional model of a building, if a three-dimensional model is created using the three-dimensional CAD data of the building as it is, the user can observe a “completed three-dimensional model” created as a “completed unitary object”. Will be "only the appearance of". In the case of buildings, civil engineering, and construction structures, it is important to observe the final structure as a whole, but grasp the status of the structure at each stage until the structure is completed. It is very important to do. In particular, in a large-scale structure construction project, an intermediate inspection is set at each stage of the process. It is considered that it is very effective to grasp the appearance of the structure at each inspection stage. However, in the prior art, there is final three-dimensional CAD data of the structure, but it is difficult to extract the three-dimensional CAD data of the intermediate structure from there. Appearance is grasped by paper base such as drawings. In addition, in the case of buildings, civil engineering, and construction structures, it is important to have an intermediate structure or an external structure that can be observed from the outside, but room allocation, internal structure, cross-sectional structure, layer structure, concrete arrangement The situation is often more important. However, in the prior art, if the three-dimensional data of the three-dimensional object is used as it is, the inside of the intermediate stage building or structure cannot be seen. That is, it is not possible to create a three-dimensional model capable of observing the structure of the structure under construction, the room layout of the structure, the internal structure, the cross-sectional structure, and the concrete bar arrangement.

  In order to create a solid model of a structure at an intermediate stage, construction is performed by instructing a skilled operator of 3D CAD software that requires complicated operations to process the original 3D CAD data. It is necessary to create CAD data for an “incomplete solid model” at an intermediate stage so that a building on the way can be observed. Or, instruct a skilled operator of 3D CAD software who needs complicated operations to process the original 3D CAD data so that the room layout, internal structure, cross-sectional structure, and concrete bar arrangement can be observed. Thus, it is necessary to create CAD data for a “notched solid model” in which a part of the building is cut out so that the cross section of the building can be observed. As described above, even if CAD data for a “notched three-dimensional model” is created by bothering the hands of a CAD operator having specialized skills, and the internal structure can be observed, The “model” now has a dilemma in which the “whole” structure and appearance of buildings and civil engineering works cannot be observed.

  Therefore, an object of the present invention is to generate a CAD data generation apparatus, a CAD data generation program and a storage medium suitable for producing a three-dimensional object by a three-dimensional printer, in particular, three-dimensional CAD data of a structure at each stage of construction. That is. Another object of the present invention is to provide a CAD data generating apparatus and CAD data generating apparatus for generating three-dimensional CAD data so that a target three-dimensional object can be produced as if it were an integrated object, and the integrated object can be divided. To provide a program and a storage medium.

In order to solve the above-described problems, the CAD data generating apparatus according to the first invention is
3D CAD data of a 3D object (including at least an artificial structure (building, building, dam, bridge, road, etc.)), and 3D objects for a plurality of components constituting the 3D object A CAD acquisition unit for acquiring such three-dimensional CAD data;
A plurality of work steps for constructing a three-dimensional object (a three-dimensional object includes an artificial structure or a layer of natural objects such as soil, gravel, stone, hills, small mountains, cliffs, etc.) A storage unit for storing process management data defining the order of the processes, and a comparison table for associating each work process with a three-dimensional object of a component included in the three-dimensional object;
A process acquisition unit (such as an operation reception unit that receives an operation by a user or a reception unit that acquires information from the outside) that acquires a work process;
A process extracting unit for extracting the acquired work process and the work process in the order before the work process from the process management data as a first work process group;
Referring to the comparison table, a three-dimensional object associated with the extracted first work process group is specified, and the specified three-dimensional object is extracted from the three-dimensional CAD object as a first three-dimensional object group A CAD data extraction unit,
CAD data for generating three-dimensional CAD data including the extracted first three-dimensional object group as three-dimensional CAD data for a three-dimensional solid object model for modeling a solid object at the end of the acquired work process A generator,
Have

The CAD data generating apparatus according to the second invention is
The process management data is
Further comprising at least one inspection information performed between the work process and another work process;
The process acquisition unit
Extracting inspection information included in the process management data, and automatically obtaining a work process performed immediately before the time of the extracted inspection information;
It is characterized by that.

A CAD data generating apparatus according to the third invention is
The storage unit
Storing a pattern table that defines unique pattern data (barcode, two-dimensional barcode, symbol, character information, etc.) corresponding to at least one component constituting the three-dimensional object;
The CAD data generation unit
The pattern data corresponding to the component is pasted on the surface exposed to the outside of the three-dimensional object and belonging to the three-dimensional object of the component, or a three-dimensional object in the vicinity of the component, Processing the three-dimensional CAD data;
It is characterized by that.

The CAD data generating device according to the fourth invention is:
The storage unit
Store the gap width further,
The CAD data extraction unit is
Referring to the comparison table, a three-dimensional object associated with the extracted first work process group is specified, and the specified three-dimensional object is extracted from the three-dimensional CAD object as a first three-dimensional object group And specifying a three-dimensional object other than the first three-dimensional object group, extracting the specified three-dimensional object from the three-dimensional CAD object as a second three-dimensional object group,
The CAD data generating device is
A first dividing plane is a boundary between the first three-dimensional object to be configured from the extracted first three-dimensional object group and the second three-dimensional object to be configured from the extracted second three-dimensional object group. Further having a dividing plane setting unit to set as
The CAD data generation unit
The first three-dimensional object group and the first three-dimensional object group so as to divide the first three-dimensional object and the second three-dimensional object in a first divided area defined by the first dividing surface and the gap width; Generating 3D CAD data obtained by processing the second 3D object group;
It is characterized by that.

A CAD data generation device according to the fifth invention is:
An input receiving unit for receiving an operation input for designating one or more division instruction surfaces for dividing the three-dimensional object;
A CAD data processing unit for processing the three-dimensional CAD data so as to divide (cut) the three-dimensional object in the second divided region defined by the division instruction surface and the gap width;
Further having
It is characterized by that.

A CAD data generating apparatus according to the sixth invention is:
The gap width is defined according to a three-dimensional modeling resolution of a three-dimensional printer on which the three-dimensional object is printed (three-dimensional modeling).
It is characterized by that.
For example, the three-dimensional printing resolution of a three-dimensional printer is as follows: In the case of a three-dimensional printer that uses powder as a base material and solidifies a part of the base material with a solidifying agent, the thickness of the base material spray layer once , And at least one of the penetration thickness of the solidifying agent (modeling agent, modeling ink). It is preferable to make the gap width as thin as possible.

A CAD data generation device according to the seventh invention
The storage unit
Storing a pattern table defining unique pattern data corresponding to at least one component constituting the three-dimensional object;
The CAD data generation unit
The surface that divides the three-dimensional object, and the pattern data corresponding to the component is pasted on the three-dimensional object of the component or a surface belonging to a three-dimensional object in the vicinity of the component, Processing 3D CAD data,
It is characterized by that.
When the three-dimensional object of the constituent element is, for example, a reinforcing bar embedded in a concrete wall material, it is preferable to paste the reinforcing bar pattern data on the concrete wall material.

  As described above, the solution of the present invention has been described as an apparatus. However, the present invention can be realized as an object, a method, a program, and a storage medium storing the program, which are substantially equivalent to these. It should be understood that these are included in the scope of the present invention. Each step of the following methods and programs uses an arithmetic processing unit (processor) such as a CPU or DSP as necessary for data processing. Input data, processed / generated data, etc. Is stored in a storage device such as a magnetic tape, HDD, or memory.

For example, the three-dimensional model according to the eighth aspect of the present invention realized as an object is
It is the solid model modeled with the three-dimensional printer using the CAD data produced | generated by the CAD data production | generation apparatus in any one of the 1st-7th invention mentioned above.

Also, for example, a program according to the ninth aspect that realizes the present invention as an object is:
A CAD data generation program for causing a computer to function as the CAD data generation device according to any one of the first to seventh aspects of the invention.

Also, for example, a storage medium according to the tenth aspect of the present invention realized as an object is
A computer-readable storage medium storing the CAD data generation program according to any one of the first to seventh inventions described above.

  As described above, the solution of the present invention has been described as an apparatus or a three-dimensional model. However, the present invention can also be realized as a method, a program, and a storage medium storing the program. It should be understood that these are included in the scope of the invention. Each step of the following methods and programs uses an arithmetic processing unit (processor) such as a CPU or DSP as necessary for data processing. Input data, processed / generated data, etc. Is stored in a storage device such as a magnetic tape, HDD, or memory.

  According to the present invention, it is possible to easily generate three-dimensional CAD data of a structure at the stage of each process of construction.

FIG. 1 is a block diagram showing an outline of a CAD data generation apparatus according to Embodiment 1 of the present invention. FIG. 2 is a flowchart illustrating an example of processing executed by the CAD data generation apparatus according to the first embodiment. FIG. 3 is a schematic diagram showing the process management data of the embankment type road construction stored in the storage unit. FIG. 4 is a schematic diagram showing a comparison table for associating a three-dimensional object of a three-dimensional object with a work process for embankment type road construction. FIG. 5 is a schematic diagram for explaining a mechanism for generating three-dimensional CAD data by the processing of FIG. 2 using the data of FIGS. 2 and 3. FIG. 6 is a schematic diagram for explaining a mechanism for generating three-dimensional CAD data by the processing of FIG. 2 using the data of FIGS. 2 and 3. FIG. 7 is a schematic diagram showing process management data for a cut type road construction stored in the storage unit. FIG. 8 is a schematic diagram showing a comparison table for associating a three-dimensional object that is a component of a three-dimensional object with a cut-type road construction work process. FIG. 9 is a schematic diagram for explaining a mechanism for generating three-dimensional CAD data by the processing of FIG. 2 using the data of FIGS. 7 and 8. FIG. 10 is a schematic diagram for explaining a mechanism for generating three-dimensional CAD data by the process of FIG. 2 using the data of FIGS. 7 and 8. FIG. 11 is a block diagram showing an outline of a CAD data generation apparatus according to Embodiment 2 of the present invention. FIG. 12 is a flowchart illustrating an example of processing executed by the CAD data generation device according to the second embodiment. FIG. 13 is a schematic diagram showing virtual construction process management data composed of N1-N3 construction and its comparison table. FIG. 14 is a schematic diagram for explaining a mechanism for generating three-dimensional CAD data by the processing of FIG. 12 using various data of FIG. FIG. 15 is a flowchart illustrating an example of processing executed by the CAD data generation device according to the second embodiment. FIG. 16 is a schematic diagram for explaining a mechanism for generating three-dimensional CAD data by the processing of FIG. 15 using various data of FIG. FIG. 17 is a schematic diagram for explaining in detail the three-dimensional CAD data generated in FIG. FIG. 18 is a schematic diagram for explaining a mechanism for generating three-dimensional CAD data by the processing of FIG. 15 using various data of FIG. FIG. 19 is a projection view in which the three-dimensional CAD data processed by the CAD data processing apparatus according to the second embodiment is projected onto a two-dimensional plane. FIG. 20 is a lamination transition diagram showing the principle of the powder fixing type lamination method. FIG. 21 is a stacking transition diagram illustrating a state in which a three-dimensional object is formed by a three-dimensional printer based on a powder fixing type stacking method using the three-dimensional CAD data processed by the CAD data generating apparatus according to the second embodiment. FIG. 22 is a projection view showing the thicknesses of the divided regions set in the three-dimensional object processed by the CAD data generation device according to the second embodiment. FIG. 23 is an exploded perspective view showing a state in which a house in which three-dimensional CAD data is generated and processed by the apparatus or program according to the second embodiment is produced as a three-dimensional object using a three-dimensional printer. FIG. 24 is a diagram showing a one-dimensional house model produced in FIG. FIG. 25 is a diagram showing a state of the dividing surface when the one-dimensional house three-dimensional model shown in FIG. 24 is divided. FIG. 26 is a diagram illustrating a state of the dividing surface when the one-dimensional house three-dimensional model illustrated in FIG. 24 is divided. FIG. 27 is a flowchart illustrating an example of processing executed by the CAD data generation device according to the second embodiment. FIG. 28 is a schematic diagram for explaining a mechanism for generating three-dimensional CAD data in which two division planes are set. FIG. 29 is a schematic diagram of a river structure in which 3D CAD data generated and processed by the apparatus or program according to Embodiment 1 or 2 is output by a 3D printer.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

<Embodiment 1>
FIG. 1 is a block diagram showing an outline of a CAD data generation apparatus according to Embodiment 1 of the present invention. As shown in the figure, the CAD data generation device 100 (CDG) includes a control unit (processor such as a CPU) 110, an input unit 120, an output unit 130, a communication unit 140, a storage unit 150, and a display unit 160. And have. The storage unit 150 stores process management data PMD and a comparison table REF. The control unit 110 includes an acquisition unit 111, an extraction unit 112, a CAD data generation unit 113, and a three-dimensional output control unit 114. The process management data PMD constructs a three-dimensional object (a three-dimensional object includes not only an artificial structure but also a layer of natural objects such as soil, gravel, stone, hills, small mountains, cliffs, etc.). A plurality of work processes and an order of the work processes are defined. The reference table REF is a table that associates the three-dimensional objects of the constituent elements included in the three-dimensional object with each work process. It is preferable to use the process management data PMD stored in the storage unit of this system. However, whenever data is required for processing, the process management data PMD is sent from the process management server PMS via the network NET. May be obtained.

  When the acquisition unit 111 functions as a CAD acquisition unit, the acquisition unit 111 is three-dimensional CAD data of a three-dimensional object including at least an artificial structure (a building, a building, a dam, a bridge, a road, etc.), and constitutes the three-dimensional object 3D CAD data including 3D objects for a plurality of components to be acquired is acquired. The acquired three-dimensional CAD data of the three-dimensional object is created by the CAD system CD1, is received by the communication unit 140 via the network NET, and is stored in the storage unit 150. The acquired three-dimensional CAD data is modeled as a three-dimensional model in a three-dimensional space by the three-dimensional output control unit 114, and this three-dimensional model (three-dimensional object) is projected onto a two-dimensional plane (projection plane). The display unit 160 displays the projected “three-dimensional object”. When the acquisition unit 111 functions as a process acquisition unit, the acquisition unit 111 acquires a work process. The acquisition unit 111 may acquire a work process independently, but acquires information in cooperation with an operation reception unit (input unit) that receives an operation by a user or a reception unit RCV that acquires information from the outside. May be.

  When functioning as a process extraction unit, the extraction unit 112 extracts the acquired work process and the work process in the order before the work process from the process management data as a first work process group. When the extraction unit 112 functions as a CAD data extraction unit, the extraction unit 112 refers to the comparison table, identifies the three-dimensional object associated with the extracted first work process group, and identifies the identified three-dimensional object as the first Extract from a three-dimensional CAD object as a three-dimensional object group. The CAD data generation unit 113 uses the extracted three-dimensional CAD data including the first three-dimensional object group to obtain the three-dimensional CAD data for the three-dimensional object model at the intermediate stage for modeling the three-dimensional object at the end stage of the acquired work process. Generate as

  The acquired three-dimensional CAD data, the acquired work process, the extracted work process group, the extracted three-dimensional CAD object, and the generated three-dimensional CAD data are preferably stored in the storage unit 150 as intermediate data. The three-dimensional output control unit 114 is a device driver of the three-dimensional printer PRN1 or a functional unit having a function thereof, and a target three-dimensional object is three-dimensionally output via the output unit 130 using the generated three-dimensional CAD data. It is output (three-dimensional printing) to the CAD printer PRN1. Via the three-dimensional output control unit 114 or the communication unit 140, the processed three-dimensional CAD data may be transmitted / output to the terminal PC1, which is an external device, and stored on these terminals. In this way, the generated information and intermediate data and acquired data are transmitted to the outside, displayed on the display unit, and the generated information and intermediate data and acquired data are stored in the storage unit. It should be noted that other embodiments described below are possible as well. The CAD data generation apparatus 100 is a general-purpose computer, a special-purpose computer, a server, a computer such as a PC, or a program that implements (executes) the functional units and processing procedures (methods) of this system on the computer. It is preferable to build a CAD data generation device on a computer by holding the module in a CPU (processor or its cache) or storage unit of the computer or by reading it from an external server or storage. The same applies to each embodiment.

  FIG. 2 is a flowchart illustrating an example of processing executed by the CAD data generation apparatus according to the first embodiment. As shown in the figure, in step S11, the acquisition unit includes a three-dimensional object including at least an artificial structure (building, building, dam, bridge, road, artificial geological layer such as gravel or soil). CAD data, which is 3D CAD data including 3D objects for a plurality of components constituting the three-dimensional object. Next, in step S12, the storage unit includes a three-dimensional object (the three-dimensional object includes an artificial structure or a layer of natural objects such as soil, gravel, stone, a hill, a small mountain, a cliff, or the like). A plurality of work processes to be constructed, process management data defining the order of the work processes, and a reference table for associating each work process with a three-dimensional object of a component included in the three-dimensional object are stored. This step does not need to be executed every time, and only needs to be executed once unless the target three-dimensional object or process management data is changed. Subsequently, in step S13, the acquisition unit acquires a work process.

  In step S14, the extraction unit extracts the acquired work process and the work processes in the order before the work process from the process management data as a first work process group. In step S15, the extraction unit refers to the comparison table, identifies the three-dimensional object associated with the extracted first work process group, and uses the identified three-dimensional object as the first three-dimensional object group. Extract from CAD object. Finally, in step S16, the CAD data generation unit uses the three-dimensional CAD data including the extracted first three-dimensional object group as an intermediate stage solid object model for modeling the acquired three-dimensional object at the end of the work process. As three-dimensional CAD data for Although not shown, the three-dimensional output control unit outputs the generated three-dimensional data to an external three-dimensional printer or CAD system. The generated three-dimensional data may be displayed on the display unit using the data or stored in the storage unit 150 in order to confirm the status of the construction stage.

  FIG. 3 is a schematic diagram showing the process management data of the embankment type road construction stored in the storage unit. As shown in the figure, the process management data PMD1 is preferably in the form of a gun chart in which the horizontal axis defines time and the vertical axis defines the process order. In the present embodiment, the embankment type road construction is composed of four work processes. The first work process is the fill work P1, the second work process is the slope reinforcement work P2, the third work process is the roadwork work P3, and the fourth work process is the road work P4. . Thus, the order of each work process is defined.

  FIG. 4 is a schematic diagram showing a comparison table for associating a three-dimensional object of a three-dimensional object with a work process for embankment type road construction. As shown in the figure, in the comparison table REF1, the identifier of the three-dimensional object of the component related to the work process among the target three-dimensional object OB10 is associated with each work process. For example, the fill work P1 is associated with the ground x1a and the fill x1b, which are components targeted by the work process. The slope reinforcement work P2 is associated with slope reinforcement concrete x2a, x2b, which is a component created in the work process. The road construction P3 includes road bodies x3a., Which are constituent elements created in the work process. The road bed x3b is associated with the layer x3c that is recessed by a road roller (a compacting machine) that is performed before laying the road body or the roadbed. The road construction P4 is associated with a lower layer roadbed x4a, an upper layer roadbed x4b, and a surface layer x4c, which are components created in the work process. Note that the three-dimensional object OB10 shown on the lower side of the figure is drawn by three-dimensional CAD data that is a set of three-dimensional objects for these components.

  FIG. 5 is a schematic diagram for explaining a mechanism for generating three-dimensional CAD data by the processing of FIG. 2 using the data of FIGS. 2 and 3. In this embodiment, a case where the process acquisition unit acquires “slope reinforcement work” as a work process will be described. As shown in the figure, referring to the comparison table REF1, the extraction unit performs “slope reinforcement work P2” and “filling work P1”, which are work processes before the end of the slope reinforcement work P2. Extracted as one work process group. Then, “slope reinforcement concrete x2a, x2b”, which is a component associated with “slope reinforcement work P2,” and “ground x1a”, “fill x1b”, which are components associated with “filling construction P1”. And are extracted. In this way, the extraction unit identifies the three-dimensional object associated with the first work process group, and extracts the identified three-dimensional object from the three-dimensional CAD object as the first three-dimensional object group. The CAD data generation unit uses the extracted three-dimensional CAD data including the first three-dimensional object group as the three-dimensional CAD data for the three-dimensional object model at the intermediate stage for modeling the three-dimensional object at the end of the acquired work process. Generate. What is drawn with the generated three-dimensional CAD data is a three-dimensional object OB11 in the middle of construction. If the generated three-dimensional CAD data is printed and modeled by a three-dimensional printer, it is possible to create a three-dimensional model at the end of a certain stage of such a work process.

  FIG. 6 is a schematic diagram for explaining a mechanism for generating three-dimensional CAD data by the processing of FIG. 2 using the data of FIGS. 2 and 3. In this embodiment, the case where the process acquisition unit acquires “road construction” as a work process will be described. As shown in the figure, referring to the comparison table REF1, the extraction unit is the work process before the end of the roadwork P3, which is “roadwork P3”, “slope reinforcement work P2”, “ The “filling work P1” is extracted as the first work process group. The components associated with the “road body construction P3”, which are the “road body x3a”, “road floor x3b”, “roller recessed layer x3c”, and “slope reinforcement construction P2”. The elements “slope reinforced concrete x2a, x2b” and “ground x1a” and “fill x1b”, which are components associated with “fill work P1”, are extracted. Here, the component “fill x1b” occupies a position overlapping with “road body x3a” and “roadbed x3b”. In this case, “road body x3a”, which is a later work process, "Road bed x3b" is prioritized, and a part of "fill x1b" is excluded from the prioritized objects.

  In this way, the shape of a structure or a natural object at the installation location may change during the construction stage. There are several other ways to reproduce it accurately. For example, a three-dimensional object called a layer x3c that is recessed with a roller shown in the object OB10-a in FIG. 3 is a special three-dimensional object that indicates a space with no content, and when this component and the fill x1b are combined, It becomes the embankment (x1b) where the upper part is recessed. When a road body and a road bed are combined with the recessed portion, a configuration like OB12 is obtained. Moreover, the space above the roadbed is a space where nothing exists in the work process, and is a place where other layers are stacked in the next process. In this way, the extraction unit identifies the three-dimensional object associated with the first work process group, and extracts the identified three-dimensional object from the three-dimensional CAD object as the first three-dimensional object group. The CAD data generation unit uses the extracted three-dimensional CAD data including the first three-dimensional object group as the three-dimensional CAD data for the three-dimensional object model at the intermediate stage for modeling the three-dimensional object at the end of the acquired work process. Generate. What is drawn with the generated three-dimensional CAD data is a three-dimensional object OB12 in the middle of construction. If the generated three-dimensional CAD data is printed and modeled by a three-dimensional printer, it is possible to create a three-dimensional model at the end of a certain stage of such a work process.

  FIG. 7 is a schematic diagram showing process management data for a cut type road construction stored in the storage unit. As shown in the figure, the process management data PMD2 is preferably in a gun chart format in which time is plotted on the horizontal axis and process order is plotted on the vertical axis. In this embodiment, it is assumed that the cut type road construction is composed of four work processes. The first work process is the cut work M1, the second work process is the slope reinforcement work M2, the third work process is the road work M3, and the fourth work process is the road work M4. is there. Thus, the order of each work process is defined. The work process may be defined in time series instead of the order.

  FIG. 8 is a schematic diagram showing a comparison table for associating a three-dimensional object that is a component of a three-dimensional object with a cut-type road construction work process. As shown in the drawing, in the comparison table REF2, the identifier of the three-dimensional object of the component related to the work process among the target three-dimensional object OB20 is associated with each work process. For example, in the cut work M1, the ground y1b, which is a component targeted by the work process, is associated with the cut sloped land y1a. In the construction of the embankment type, skillful processing by defining a layer or block to be excluded in the work process with a special three-dimensional object indicating a space without content is used, but in this embodiment, The component that changes in the work process is processed by preparing it as a three-dimensional object y1b of a component having a changed shape (or a shape before the change) like the object B20-a. The slope reinforcement work M2 is associated with slope reinforcement concrete y2 which is a component created in the work process. The road body construction M3 is a component created in the work process, the ground y3a, the road where the left part is compacted by a road roller (consolidation machine) that is performed before laying the road body and the road floor The body y3b and the road bed y3c are associated with each other. The road construction M4 is associated with a lower layer roadbed y4a, an upper layer roadbed y4b, and a surface layer y4c, which are components created in the work process. Note that the three-dimensional object OB20 shown on the lower side of the drawing is drawn by three-dimensional CAD data that is a set of three-dimensional objects for these components.

  FIG. 9 is a schematic diagram for explaining a mechanism for generating three-dimensional CAD data by the processing of FIG. 2 using the data of FIGS. 7 and 8. In this embodiment, a case where the process acquisition unit acquires “slope reinforcement work” as a work process will be described. As shown in the figure, referring to the comparison table REF2, the extraction unit performs “slope reinforcement work M2” and “cutting work M1”, which are work processes before the end of the slope reinforcement work P2. Extracted as a first work process group. Then, “slope reinforcement concrete y2” that is a component related to “slope reinforcement work M2”, “ground y1b” that is a component related to “cutting work M1”, “cut ground Inclined land y1a "is extracted. In this way, the extraction unit identifies the three-dimensional object associated with the first work process group, and extracts the identified three-dimensional object from the three-dimensional CAD object as the first three-dimensional object group. The CAD data generation unit uses the extracted three-dimensional CAD data including the first three-dimensional object group as the three-dimensional CAD data for the three-dimensional object model at the intermediate stage for modeling the three-dimensional object at the end of the acquired work process. Generate. What is drawn with the generated three-dimensional CAD data is a three-dimensional object OB21 in the middle of construction. If the generated three-dimensional CAD data is printed and modeled by a three-dimensional printer, it is possible to create a three-dimensional model at the end of a certain stage of such a work process.

  FIG. 10 is a schematic diagram for explaining a mechanism for generating three-dimensional CAD data by the process of FIG. 2 using the data of FIGS. 7 and 8. In this embodiment, the case where the process acquisition unit acquires “road construction” as a work process will be described. As shown in the figure, with reference to the comparison table REF2, the extraction unit is a work process before the end of the road work M3, which is “road work M3”, “slope reinforcement work M2”, “ Cut work M1 "is extracted as the first work process group. Then, the “road body y3b”, “road floor y3c”, “the ground y3a which is compressed by a roller and recessed” and “slope reinforcement work M2” are components associated with “road construction M3”. “Slope reinforced concrete y2” that is an associated component, “ground y1b” and “sloped sloped y1a” that are associated with “cut work M1” are extracted. Here, the constituent elements “Ground y1b” and “Land y3a compressed by a roller and recessed” are the competing objects occupying the same position. In such a case, the order attribute and time of both objects The attributes are compared, and an object related to a newly executed process is preferentially extracted. In this case, y3a is extracted. In this way, the extraction unit identifies the three-dimensional object associated with the first work process group, and extracts the identified three-dimensional object from the three-dimensional CAD object as the first three-dimensional object group. The CAD data generation unit uses the extracted three-dimensional CAD data including the first three-dimensional object group as the three-dimensional CAD data for the three-dimensional object model at the intermediate stage for modeling the three-dimensional object at the end of the acquired work process. Generate. What is drawn with the generated three-dimensional CAD data is a three-dimensional object OB22 during construction. If the generated three-dimensional CAD data is printed and modeled by a three-dimensional printer, it is possible to create a three-dimensional model at the end of a certain stage of such a work process.

<Embodiment 2>
FIG. 11 is a block diagram showing an outline of a CAD data generation apparatus according to Embodiment 2 of the present invention. As shown in the figure, the CAD data generation device 200 (CDG) includes a control unit (processor such as a CPU) 210, an input unit 220, an output unit 230, a communication unit 240, a storage unit 250, and a display unit 260. And have. The blocks / members of the second embodiment having the same or similar names / symbols as the first embodiment have the same functions unless otherwise specified. The storage unit 250 stores process management data PMD and a comparison table REF. In the second embodiment, the storage unit 250 further stores a gap width GAP suitable for dividing a target object with a target three-dimensional printer in advance and a pattern table PT including a pattern to be attached to a three-dimensional object. . The pattern table PT includes various pattern data, and each pattern data includes color, pattern, character, symbol, one-dimensional or two-dimensional barcode, mark, figure, bar arrangement, structural cross section, map , A design drawing, a wiring diagram, and one or more selected from the group consisting of a three-dimensional shape. The control unit 210 includes an acquisition unit 211, an extraction unit 212, a CAD data generation unit 213, and a three-dimensional output control unit 214. In the second embodiment, the control unit 210 further includes a data processing unit 215 and a division plane setting unit 216. When the input unit 220 functioning as an input receiving unit receives an operation input designating one or more division instruction surfaces for dividing a three-dimensional object, the CAD data processing unit 215 is defined by the input division instruction surface and the gap width. The second divided area is set, and the three-dimensional CAD data is processed so as to divide (cut) the three-dimensional object in the set second divided area.

  In other words, the input unit 220 receives an operation input for designating one or more division instruction surfaces for dividing the three-dimensional object. Specifically, for example, the user designates a division instruction screen for dividing the solid object displayed on the display unit 260 via the input unit 220 and the mouse MS, and the input unit 220 performs the designated division. Accept the indication surface. The CAD data processing unit 215 processes the three-dimensional CAD data so as to divide (cut) the three-dimensional object in the divided area defined by the division instruction surface and the gap width.

  The gap width GAP is defined according to the three-dimensional modeling resolution of a three-dimensional printer on which a three-dimensional object is printed. For example, when generating and processing for the three-dimensional printer PRN1, a numerical value corresponding to the three-dimensional modeling resolution of the printer is defined as the gap width and stored in the storage unit 250 in advance. Similarly, when generating and processing for the three-dimensional printer PRN2, a numerical value corresponding to the three-dimensional modeling resolution of the printer is defined as a gap width and stored in the storage unit 250 in advance. Several gap widths are stored in the storage unit 250, and designation of an identifier indicating an output destination printer is received from the input unit 220. Based on this identifier, a gap that is optimal for each printer is used, and divided areas ( Exactly, it is also possible to determine the thickness of the divided region in the vertical direction from the dividing surface. For example, the three-dimensional printing resolution of a three-dimensional printer is as follows: In the case of a three-dimensional printer that uses powder as a base material and solidifies a part of the base material with a solidifying agent, the thickness of the base material spray layer once , And at least one of the penetration thickness of the solidifying agent (modeling agent, modeling ink). In addition, when a three-dimensional object is three-dimensionally modeled with a three-dimensional printer, it is preferable to make the gap width as thin as possible in order to make it appear as if it is an integral object. As described above, the gap width GAP is preferably set automatically according to the printer identifier in accordance with the 3D modeling resolution of the 3D printer. However, the user manually sets a desired numerical value appropriately. Is also possible.

  FIG. 12 is a flowchart illustrating an example of processing executed by the CAD data generation device according to the second embodiment. Steps S21 and S24 to S26 in FIG. 12 are the same as steps S11 and S14 to S16 in FIG. 2, and therefore, description is saved and only different steps S22 and S23 are described. First, in this embodiment, it is assumed that the process management data further includes at least one inspection information performed between the work process and another work process. That is, as shown in the figure, in step S22, the storage unit 250 stores process management data further including at least one inspection information performed between a work process and another work process. Next, in step S23, the acquisition unit (process acquisition unit) 211 extracts inspection information included in the process management data, and automatically acquires a work process performed immediately before the time point of the extracted inspection information. The work process automatically set in this way will be used in subsequent processing, but automatically generates 3D CAD data that helps to understand the structure and appearance of the structure at each inspection stage of the work. Make it possible to do.

  FIG. 13 is a schematic diagram showing virtual construction process management data composed of N1-N3 construction and its comparison table. As shown in the figure, the process management data PMD3 is preferably in the form of a gun chart in which the horizontal axis defines time and the vertical axis defines the order of processes. In this embodiment, the virtual construction is assumed to be composed of three virtual work processes. The first work process is N1 work, the second work process is N2 work, and the third work process is N3 work. Thus, the order of each work process is defined. This process management data includes inspection information such as a first inspection INSP1 executed between the N1 construction and the N2 construction, and a first inspection INSP2 executed between the N2 construction and the N3 construction. The order of the work process and each inspection is defined.

  The comparison table REF3 is a table for associating the three-dimensional object of the three-dimensional object constructed by the work with the work process of the virtual work. As shown in the figure, in the comparison table REF3, the identifiers of the three-dimensional objects of the components related to the work process among the target three-dimensional object OB30 are associated with each work process. For example, the N1 construction is associated with the first hierarchy n1 that is a component targeted by the work process. The N2 construction is associated with the second hierarchy n2 which is a component targeted by the work process. The N3 construction is associated with the third hierarchy n3 that is a component targeted by the work process. Note that the three-dimensional object OB30 shown on the lower side of the drawing is drawn by three-dimensional CAD data that is a set of three-dimensional objects for these components.

  FIG. 14 is a schematic diagram for explaining a mechanism for generating three-dimensional CAD data by the processing of FIG. 12 using various data of FIG. In the present embodiment, a case will be described where the acquisition unit 211 (process acquisition unit) automatically acquires inspection information from process management data and automatically acquires two work processes based on the inspection information. First, the acquisition unit (process acquisition unit) 211 extracts the first inspection INSP1 and the second inspection information INSP2 that are inspection information included in the process management data PMD3, and extracts the extracted first inspection INSP1 and second inspection information INSP2. N1 construction and N2 construction are automatically acquired as work processes performed immediately before the time point.

  For the N1 construction acquired by the extraction unit 212 for the first inspection INSP1, “N1 construction” is a work process before the end of the N1 construction (that is, before the first inspection INSP1). Is extracted as a first work process group. As described above, the work process group may include only one work process. Then, referring to the comparison table REF3, the extraction unit 212 identifies the three-dimensional object n1 of the component associated with the extracted first work process group (N1 construction), and identifies the identified three-dimensional object n1 as the first One 3D object group is extracted from the 3D CAD object. Finally, the CAD data generation unit 213 uses the extracted three-dimensional CAD data including the first three-dimensional object group to obtain the three-dimensional object model at the intermediate stage for modeling the three-dimensional object at the end stage of the acquired work process. Generated as dimensional CAD data. The three-dimensional CAD data generated in this way is a three-dimensional object OB31 shown in the lower left of the figure, which is drawn by three-dimensional CAD data that is a set of three-dimensional objects n1.

  In this embodiment, since there are two inspection information and two work processes have been acquired, the system next performs processing for the second work process (that is, inspection information). For the N2 work acquired by the extraction unit 212 for the second inspection INSP2, “N1 work” that is a work process before the end of the N2 work (that is, before the second inspection INSP2) and “N2 construction” is extracted as the first work process group. In this case, the work process group includes two work processes. Then, referring to the comparison table REF3, the extraction unit 212 identifies and identifies the three-dimensional objects n1 and n2 of the constituent elements associated with the extracted first work process group (N1 work, N2 work) 3 The dimension objects n1 and n2 are extracted from the three-dimensional CAD object as a first three-dimensional object group. Finally, the CAD data generation unit 213 uses the extracted three-dimensional CAD data including the first three-dimensional object group to obtain the three-dimensional object model at the intermediate stage for modeling the three-dimensional object at the end stage of the acquired work process. Generated as dimensional CAD data. The three-dimensional CAD data generated in this way is the three-dimensional object OB32 shown in the lower right of the figure, which is drawn by the three-dimensional CAD data that is a set of the three-dimensional objects n1 and n2. As described above, in this embodiment, it is possible to draw the predicted structure at the time of inspection with CAD information from the construction management data including the inspection information, and to create a three-dimensional model with a three-dimensional printer. It is possible to improve the efficiency of inspection. In particular, reviewers who carry out inspections can carry out inspections while viewing and comparing the three-dimensional model and the actual structure while carrying the three-dimensional model, and its utility is immeasurable.

  FIG. 15 is a flowchart illustrating an example of processing executed by the CAD data generation device according to the second embodiment. Since steps S31 to S34 in FIG. 12 are the same as steps S21 to S24 in FIG. 12, the description will be saved, and only different steps S35 to S38 will be described. First, in this embodiment, it is assumed that the process management data further includes at least one inspection information performed between the work process and another work process. As shown in the figure, in step S35, the extraction unit refers to the comparison table, identifies the three-dimensional object associated with the extracted first work process group, and identifies the identified three-dimensional object as the first one. A three-dimensional object group is extracted from a three-dimensional CAD object, a three-dimensional object other than the first three-dimensional object group is specified, and the specified three-dimensional object is extracted as a second three-dimensional object group from the three-dimensional CAD object. . Next, in step S36, the dividing plane setting unit is configured to include the first three-dimensional object to be configured from the extracted first three-dimensional object group and the second to be configured from the extracted second three-dimensional object group. The boundary with the three-dimensional object is set as the first divided plane. Then, in step S37, the CAD data generation unit divides the first three-dimensional object and the second three-dimensional object in the first division area defined by the first division plane and the gap width. The three-dimensional CAD data obtained by processing the three-dimensional object group and the second three-dimensional object group are generated. Finally, in step S38, the three-dimensional output control unit outputs (three-dimensional printing and display) the generated three-dimensional CAD data to a three-dimensional printer or display unit. In this flowchart, the aspect in which the inspection information is automatically acquired from the process management data has been described. However, the user may manually input the inspection information.

  FIG. 16 is a schematic diagram for explaining a mechanism for generating three-dimensional CAD data by the processing of FIG. 15 using various data of FIG. In the present embodiment, a case will be described in which the acquisition unit 211 (process acquisition unit) automatically acquires inspection information from process management data and automatically acquires one work process based thereon. First, the acquisition unit (process acquisition unit) 211 extracts the second inspection INSP2, which is inspection information included in the process management data PMD3, and N2 is a work process performed immediately before the time point of the extracted second inspection information INSP2. Get construction automatically.

  For the N2 work acquired by the extraction unit 212 for the second inspection INSP2, “N1 work” that is a work process before the end of the N2 work (that is, before the second inspection INSP2) and “N2 construction” is extracted as the first work process group. In this case, the work process group includes two work processes. Then, referring to the comparison table REF3, the extraction unit 212 identifies and identifies the three-dimensional objects n1 and n2 of the constituent elements associated with the extracted first work process group (N1 work, N2 work) 3 The dimension objects n1 and n2 are extracted from the three-dimensional CAD object as a first three-dimensional object group. With reference to the comparison table REF3, the extraction unit 212 identifies a three-dimensional object other than the identified first three-dimensional object group as the second three-dimensional object. The divided surface setting unit includes a first three-dimensional object that should be composed of the first three-dimensional object group (n1, n2) and a second three-dimensional object that should be composed of the second three-dimensional object group (n3). Is set as the first divided plane CP. That is, as shown in the figure, the first divided plane CP is set in the three-dimensional object OB33 at the boundary between the three-dimensional object n2 of the first three-dimensional object and the three-dimensional object n3 of the second three-dimensional object. As shown in the three-dimensional object OB34, the CAD data generation unit is preferably a first divided region CR defined by the first divided surface and the gap width (CR is a region in which the divided surface CP passes through substantially the center. The first three-dimensional object group and the second three-dimensional object group (ie, for the original completed structure) so as to divide the first three-dimensional object and the second three-dimensional object. 3D CAD data) is processed to generate 3D CAD data.

  FIG. 17 is a schematic diagram for explaining in detail the three-dimensional CAD data generated in FIG. As shown in the figure, in the three-dimensional object OB34 including the first three-dimensional object and the second three-dimensional object, the first divided region CR is set between the first three-dimensional object and the second three-dimensional object. . When this is modeled by a three-dimensional printer, a three-dimensional object OB34-pwd containing powder (not shown) that does not solidify in the first divided region CR is created. By removing the non-solidified powder (not shown) between the two three-dimensional objects, that is, in the first divided region CR, a three-dimensional object OB34-perf that looks as if it is an integrally molded product is completed. The three-dimensional object OB34-perf can be separated into a first three-dimensional object OB34-1 and a second three-dimensional object OB34-2. The user can observe the completed structure, or can observe the structure at a stage where a certain work process is completed (preferably an inspection stage). The second three-dimensional object OB34-2 is a part of the structure to be constructed in the work process after the inspection stage, and the user can also observe only such a part of the structure. . In the present embodiment, only one divided region is set, but a plurality of divided regions can be set, and it is also possible to divide into components corresponding to each work process. For example, it is possible to divide into three-dimensional objects n1 and n2 constituting the first three-dimensional object OB34-1.

  FIG. 18 is a schematic diagram for explaining a mechanism for generating three-dimensional CAD data by the processing of FIG. 15 using various data of FIG. In this embodiment, a case will be described in which the acquisition unit 211 (process acquisition unit) automatically acquires two pieces of inspection information from the process management data and automatically acquires two work processes based on the two pieces of inspection information. First, the acquisition unit (process acquisition unit) 211 extracts first inspection information INSP1 and second inspection INSP2, which are inspection information included in the process management data PMD3, and extracts the extracted first inspection information INSP1 and second inspection information. N1 construction and N2 construction are automatically acquired as work processes performed immediately before INSP2. The subsequent processing is substantially the same as in FIG. 16, except that in this example, two division planes are set and CAD data is generated such that the structure is separated into three. According to this configuration, it is possible to obtain CAD data (and a three-dimensional model thereof) of a structure at a plurality of inspection stages, respectively, and also obtain a three-dimensional object of a part constructed in a work process between inspections. It becomes possible. In addition, such a three-dimensional object can be obtained by a single three-dimensional molding.

  FIG. 19 is a projection view in which the three-dimensional CAD data processed by the CAD data generation apparatus according to the second embodiment is projected onto a two-dimensional plane. The upper side of FIG. 19 shows a state in which a three-dimensional object OB41 composed of the divided upper three-dimensional object OB41u and lower three-dimensional object OB41d is formed by a three-dimensional printer using the “lamination method”. The lower three-dimensional object OB41d is formed by sequentially solidifying [m-1] slice planes SL1 (precisely, slice areas having a slight thickness), SL2, SL3 to SLm-1 in a circular shape. . On the slice surface SLm−1, the two layers of the slice surfaces SLm and SLm + 1 are regions that are not solidified. In this embodiment, the two slice surfaces SLm and SLm + 1 are not solidified, but it is desirable to make the non-solidified region as thin as possible, and depending on the characteristics of the 3D printer used at the time of printing / modeling, only one slice surface Note that it is also possible to divide a three-dimensional object by setting to a region that does not solidify. In the case of the powder-fixing type lamination, the powder base material is left without being solidified. These two slice planes are areas corresponding to the divided areas. Then, on the slice surfaces SLm and SLm + 1 that have not been solidified, only [n− (m + 1)] pieces from the slice surface SLm + 2 to the slice surface SLn are sequentially solidified on a circle to form the upper three-dimensional object OB41u. Is done. In this way, the three-dimensional object OB41sl that can be divided into an upper part and a lower part can be formed as if it were an integrated object.

  The lower side of FIG. 19 shows a state in which the three-dimensional object OB40 before the division operation is modeled by a three-dimensional printer using the “lamination method” for comparison. The three-dimensional object OB40sl is formed by sequentially solidifying [n1] slice surfaces SL1 (more precisely, a slice region having a small thickness), SL2, SL3 to SLn on a circle. Since all n slice planes are solidified, they are connected to each other and cannot be divided. As described above, since the divided area has a small thickness as a whole, the three-dimensional object OB40sl that cannot be divided has the same appearance as the three-dimensional object OB41sl that can be divided. Therefore, if the user creates one solid object OB41sl, when the two objects are combined, the user can observe the whole solid object, and if divided by the divided area, observes the two appearances after the division. It becomes possible. Further, for example, when the OB 41d indicates a state at the time of inspection of certain inspection information, it is possible to inspect by comparing the actual structure actually created by work with the OB 41d. As will be described in detail later, it is possible to observe the cross-sectional structure and confirm the tactile sensation such as unevenness by attaching a pattern, shape, symbol, or the like to the divided surface. In addition, when the outer surface of the completed structure is closed, it is possible to observe the room division of the partitioned room by dividing the structure.

  FIG. 20 is a lamination transition diagram showing the principle of the powder fixing type lamination method. Lamination proceeds in the order of the arrows from the upper left. First, a slice layer is formed on the bottom of a housing (not shown), and the powder to be formed is spread over the entire surface. A solidifying agent having a function of solidifying a powder base material is applied only to an elliptical portion (portion to be solidified) that forms a three-dimensional object on the slice surface by using, for example, an ink jet technique. Further, a coloring agent or an agent such as ink is also applied to the portion to be colored together or separately. After that, the powder is again sprayed by an amount corresponding to one layer of the slice surface as in the beginning, and the solidifying agent is applied only to the elliptical part (the part to be solidified) that forms the three-dimensional object. By repeating this and removing the powder PWD that has not solidified, the desired three-dimensional object OB-sl can be obtained. In this example, a truncated cone is created. Note that for convenience of drawing, a three-dimensional object is formed by four slice planes, but usually, a three-dimensional object is formed by hundreds, thousands, tens of thousands, or even more slice planes.

  FIG. 21 is a stacking transition diagram illustrating a state in which a three-dimensional object is formed by a three-dimensional printer using a powder fixing type stacking method using the three-dimensional CAD data processed by the CAD data generating apparatus according to the first embodiment. This shows how OB41 (OB41u and OB41d sandwiching a divided region) in FIG. 19 is formed by a powder fixing type laminating method. As shown in the figure, a cylinder is formed by laminating sliced surfaces obtained by solidifying a powder base material in a circular shape. And the layer which should become the space | gap set with this apparatus is set as the division | segmentation area | region (powder layer / non-solidified layer) SLpwd. Then, a slice surface solidified into a circular shape is sequentially formed thereon. What is completed is a three-dimensional object OB41sl-pwd that looks as if it were a single object. Since there is a divided region (powder layer / non-solidified layer) SLpwd in the middle, it can be easily divided into an upper three-dimensional object OB41usl and a lower three-dimensional object OB41dsl.

  FIG. 22 is a projection view showing the thicknesses of the divided regions set in the three-dimensional object processed by the CAD data generation device according to the second embodiment. In (a) in the figure, the thickness of the divided region CR1 of the three-dimensional object OB42-1 is set to the distance GW1. In (b) in the figure, the thickness (gap width) of the divided region CR2 of the three-dimensional object OB42-2 is set to a distance GW2 that is thicker than the distance GW1. The three-dimensional object OB42-1, 42-2 has a divided area set on a cylinder having the same size (height, radius), but the three-dimensional object is printed (three-dimensional modeling). Since the thicknesses of the divided regions are respectively defined according to the resolution, different distances GW1 and GW2 are set. For example, the three-dimensional printing resolution of a three-dimensional printer is as follows: In the case of a three-dimensional printer that uses powder as a base material and solidifies a part of the base material with a solidifying agent, the thickness of the base material spray layer once , And at least one of the penetration thickness of the solidifying agent (modeling agent, modeling ink). Alternatively, the user may arbitrarily set the thickness (gap width) of the divided region CR2. Incidentally, the most suitable is that the gap width set based on the 3D modeling resolution and the 3D printer model (model name) are stored in the storage unit in association with each other, depending on the input of the 3D printer model to be used. In other words, the gap width associated with the model is automatically selected, and a divided region in which the gap width is set is set.

  FIG. 23 is an exploded perspective view showing a state in which a house in which three-dimensional CAD data is generated and processed by the apparatus or program according to the second embodiment is produced as a three-dimensional object using a three-dimensional printer. As shown in the figure, first, several slice planes SLbtm constituting the floor (foundation) (for the convenience of drawing and explanation, the drawing is made with one slice plane, but actually it is constituted by a plurality of layers. The same applies to the other layers.) 3D printing / three-dimensional modeling. Further, the intermediate slice surfaces SLmdl-1, SLmdl-2, and SLmdl-n including the wall for room division and the outer wall are three-dimensionally modeled. On the nth slice surface SLmdl-n, a divided region (powder layer / non-solidified layer) SLpwd which is a slice surface based on data processed by the present apparatus or program is formed. However, even though this area is called modeling, it is a powder and will be removed later. And several slice surfaces SLcel which comprise a ceiling / roof are modeled on this. In this way, a three-dimensional model of a house that looks like an integral object is completed. At this time, the divided area (divided surface) is automatically set from the work process input by the user or automatically set from the inspection information. Alternatively, the divided area (divided surface) can be directly designated by the user via the input unit.

  FIG. 24 is a diagram showing a one-dimensional house model produced in FIG. As shown in the figure, the house three-dimensional model Home looks as if it is a single object, but it can be easily divided into a house ceiling part Home1 and a house room split part Home2, and the divided one can be easily restored to the original one-piece house. It is possible to restore the three-dimensional model Home. In order to help the understanding of the invention, a line is drawn to show the boundary of the slice layer in the figure, but it should be noted that in reality, the line is not visible and looks like a uniform wall. . A barcode BAR-CD1 indicating the attribute information of the member is printed on the surface of the house ceiling portion Home1. For example, when a solar cell panel is laid on the ceiling, unique information such as a product number and a lot number is included. Similarly, barcode BAR-CD2 which shows the attribute information of the said member is printed on the side surface of house room division part Home2. For example, when a heat insulating material is embedded in this wall, unique information such as a product number and a lot number is included. In this example, the number that is the content of the barcode is also printed, but of course, only the barcode may be used. The storage unit of the present system preferably stores the pattern data information indicating the barcode and the additional information associated with the pattern data information in association with each other. For example, the additional information includes information such as the manufacturing date, the service life of the member, the scheduled maintenance inspection date, the manufacturer, and the contractor as the maintenance information.

  FIG. 25 is a diagram showing a state of the dividing surface when the one-dimensional house three-dimensional model shown in FIG. 24 is divided. As shown in the figure, the color and pattern of the reinforcing bars RFst disposed horizontally as pattern data are pasted on the surface of the slice surface SLmdl-n in contact with the dividing surface. After dividing the solid model, the user can easily understand the internal structure (in this example, the state of the rebar disposed) by looking at the pattern drawn on this surface. The reinforcing bars RFst arranged horizontally as the pattern data can be attached to the side surface instead of the divided surface. If it is arranged on the side surface, it can be visually observed without being separated or read with a barcode reader such as a portable terminal. It is also possible to read this additional information by accessing this system from a portable terminal.

  FIG. 26 is a diagram illustrating a state of the dividing surface when the one-dimensional house three-dimensional model illustrated in FIG. 24 is divided. As shown in the drawing, the surface of the slice surface SLmdl-n that is in contact with the divided surface is configured as a slice surface SLmdl-n1 to which another pattern data is pasted. As pattern data, the color, pattern, and shape of the reinforcing bars RFbar arranged vertically are pasted to form protrusions. Further, a reinforcing bar symbol RFbar-txt is pasted as a symbol, which describes “D22- @ 200” which is a symbol used by those skilled in the art. This means that 200 rebars with a diameter of 22 mm are laid, and those skilled in the art can easily understand the members. After dividing the 3D model, the user can easily draw the 3D model and see or touch the 3D “projection” or “symbol” to easily cut the internal structure of the cutting part or the shape of the internal space. It becomes possible to understand the spatial composition such as room layout. A concave portion is formed on the surface of the house ceiling portion Home1 facing the portion where the protruding portion is configured as a pattern so as to fit the protruding portion. Such protrusions and recesses can also be used as members for positioning during restoration. Similarly to FIG. 25, in FIG. 26, it is also possible to use a barcode instead of the pattern, or attach the pattern to the side surface instead of the divided surface. If it is arranged on the side surface, it can be visually observed without being separated or read with a barcode reader such as a portable terminal. It is also possible to read this additional information by accessing this system from a portable terminal.

  FIG. 27 is a flowchart illustrating an example of processing executed by the CAD data generation device according to the second embodiment. Steps S41 to S46 and S49 in FIG. 27 are the same as steps S31 to S36 and S38 in FIG. 15, and therefore the description will be omitted, and only different steps S47 and S48 will be described. First, in this embodiment, it is assumed that the process management data further includes at least one inspection information performed between the work process and another work process. As shown in the figure, after the first division plane is set based on the inspection information by the processing of a plurality of steps, the division designation plane (second division plane) is specified by the user via the input unit in step S47. An operation input is received. In step S48, the CAD data generation unit divides the first three-dimensional object and the second three-dimensional object in the first divided area defined by the first dividing surface and the gap width. 3D CAD data obtained by processing the one 3D object group and the second 3D object group is generated, and the CAD data processing unit is defined by a division instruction plane (second division plane) and a gap width. In the second divided area, the generated three-dimensional CAD data is processed so as to divide the portion designated according to the division instruction surface. Incidentally, the function of the CAD data processing unit may be included in the CAD data generation unit, or three-dimensional CAD data in which the first divided surface and the second divided surface are set simultaneously may be generated. Finally, in step S49, the three-dimensional output control unit outputs (three-dimensional printing and display) the generated three-dimensional CAD data to a three-dimensional printer or display unit.

  FIG. 28 is a schematic diagram for explaining a mechanism for generating three-dimensional CAD data in which two division planes are set. In this embodiment, the acquisition unit 211 (process acquisition unit) automatically acquires inspection information from the process management data, automatically acquires one work process based on the inspection information, and then manually sets the division instruction plane. Explain in case. First, the acquisition unit (process acquisition unit) 211 extracts the second inspection INSP2, which is inspection information included in the process management data PMD3, and N2 is a work process performed immediately before the time point of the extracted second inspection information INSP2. Get construction automatically.

  For the N2 work acquired by the extraction unit 212 for the second inspection INSP2, “N1 work” that is a work process before the end of the N2 work (that is, before the second inspection INSP2) and “N2 construction” is extracted as the first work process group. In this case, the work process group includes two work processes. Then, referring to the comparison table REF3, the extraction unit 212 identifies and identifies the three-dimensional objects n1 and n2 of the constituent elements associated with the extracted first work process group (N1 work, N2 work) 3 The dimension objects n1 and n2 are extracted from the three-dimensional CAD object as a first three-dimensional object group. With reference to the comparison table REF3, the extraction unit 212 identifies a three-dimensional object other than the identified first three-dimensional object group as the second three-dimensional object. The divided surface setting unit includes a first three-dimensional object that should be composed of the first three-dimensional object group (n1, n2) and a second three-dimensional object that should be composed of the second three-dimensional object group (n3). Is set as the first divided plane CP. That is, as shown in the drawing, the first divided plane CP1 is set at the boundary between the three-dimensional object n2 of the first three-dimensional object and the three-dimensional object n3 of the second three-dimensional object. The CAD data generation unit is a first divided region CR defined by the first divided surface and the gap width (CR is preferably a region in which the divided surface CP passes through substantially the center), and the first three-dimensional Three-dimensional CAD data obtained by processing the first three-dimensional object group and the second three-dimensional object group so as to divide the object and the second three-dimensional object is generated.

  Here, in the N3 construction, it is assumed that a three-dimensional object n4 (for example, a reinforcing bar or a pipe) is embedded in the three-dimensional object n3. The user manually sets the division instruction plane CP2 (second division plane CP2) so that the embedded three-dimensional object n4 whose appearance cannot be seen can be observed. The CAD data processing unit can be divided into three-dimensional objects n3-L and n3-R as shown in the figure in a divided region defined by the division instruction plane CP2 (second divided plane CP2) and the gap width. CAD data is generated. As shown in the figure, n4 is also divided into three-dimensional objects n4-L and n4-R, and n4 can be observed on the dividing plane. It is preferable that the n4 divided plane is drawn with a pattern indicating the structure of n4, but some pattern data as described above may be pasted there. As described above, when it is desired to grasp the CAD data generated in the normal work process unit or the internal structure that cannot be observed by the setting of the dividing plane, the setting of the dividing instruction plane by the user is very effective.

  FIG. 29 is a schematic diagram of a river structure in which 3D CAD data generated and processed by the apparatus or program according to Embodiment 1 or 2 is output by a 3D printer. As shown in the figure, the three-dimensional object OB50 is a completed river structure, and the three-dimensional CAD data generated and processed by this apparatus or program can output a river structure at an arbitrary construction stage. is there. In this example, there is shown a schematic diagram in which a three-dimensional object OB51 of a river structure in a state where a process of setting an anchored shaft into one natural stone is completed is output by a three-dimensional printer. As described above, according to the embodiment of the present invention, such a complicated structure can be output at an arbitrary stage.

  Although the present invention has been described based on the drawings and examples, it should be noted that those skilled in the art can easily make various modifications and corrections based on the present disclosure. Therefore, it should be noted that these variations and modifications are included in the scope of the present invention. For example, the processes and functions included in each unit and each step can be rearranged so as not to be logically contradictory, and a plurality of means / units and steps can be combined or divided into one. Is possible. Alternatively, it should be noted that some components, functions, processes, steps, etc. of the apparatus, method, program, etc. according to the present invention can be located in a remote server or the like. In the embodiment, the structure is modeled (three-dimensional printing) using the “powder-fixing type laminating method”, but this is merely an example, and other three-dimensional modeling methods (for example, laser irradiation solidification method) are used. Note that the invention is applicable.

100 CAD data generation device 110 control unit 111 acquisition unit 112 extraction unit 113 CAD data generation unit 114 three-dimensional output control unit 120 input unit 130 output unit 140 communication unit 150 storage unit 160 display unit 200 CAD data generation device 210 control unit 211 acquisition Unit 212 extraction unit 213 CAD data generation unit 214 three-dimensional output control unit 215 CAD data processing unit 216 division plane setting unit 220 input unit 230 output unit 240 communication unit 250 storage unit 260 display unit BAR-CD1 barcode BAR-CD2 barcode CP Dividing surface CP1 First dividing surface CP2 Dividing instruction surface (second dividing surface)
CR division area CR1 first division area CR2 second division area GAP gap width GW1 distance GW2 distance Home solid model Home1 house ceiling part Home2 house room division part INSP1 inspection information INSP2 inspection information M1 cutting work M2 slope reinforcement M3 road Body work M4 Road work MS Mouse n1, n2, n3, n4 3D object NET Network OB10 3D object OB11 3D object OB12 3D object OB20 3D object OB21 3D object OB22 3D object OB30 3D object OB31 3D object Object OB32 Solid object OB33 Solid object OB34 Solid object OB40 Solid object OB40sl Solid object B41 Three-dimensional object OB41d Lower three-dimensional object OB41dsl Lower three-dimensional object OB41sl Three-dimensional object OB41u Upper three-dimensional object OB41usl Upper three-dimensional object OB42 Three-dimensional object P1 Cut work P2 Slope reinforcement work P3 Road work P4 Road work PC1 Terminal PMD Process management data PMD1 Process management data PMD2 Process management data PMD3 Process management data PMS Process management server PRN1 3D printer PRN2 3D printer PT Pattern table PWD Powder RCV Receiver REF Control table REF1 Control table REF2 Control table REF3 Control table RFbar Reinforcing bar symbol RFst Reinforcing bar SL1 Slice Plane SLbtm slice plane SLcel slice plane SLm slice plane SLmdl slice plane SLn slice plane x1a ground x1 Embankment x2a, x2b Slope reinforced concrete x3a Road body x3b Road floor x3c Layer x4a Lower layer roadbed x4b Upper layer roadbed x4c Surface layer y1a Sloped y1b Sloped ground y1b Ground Y2 Slope reinforced concrete y3a Ground y3b Roadside y3c Roadbed y4a Bottom layer y4a Surface

Claims (10)

A CAD data generation device,
CAD acquisition unit for acquiring three-dimensional CAD data of a three-dimensional object including three-dimensional objects for a plurality of components constituting the three-dimensional object;
A plurality of work steps for constructing a three-dimensional object and process management data defining the order of the work steps; a reference table associating each work step with a three-dimensional object of a component included in the three-dimensional object; A storage unit for storing
A process acquisition unit for acquiring work processes;
A process extracting unit for extracting the acquired work process and the work process in the order before the work process from the process management data as a first work process group;
Referring to the comparison table, a three-dimensional object associated with the extracted first work process group is specified, and the specified three-dimensional object is extracted from the three-dimensional CAD object as a first three-dimensional object group A CAD data extraction unit,
CAD data for generating three-dimensional CAD data including the extracted first three-dimensional object group as three-dimensional CAD data for a three-dimensional solid object model for modeling a solid object at the end of the acquired work process A generator,
A CAD data generating apparatus having The CAD data generation device according to claim 1,
The process management data is
Further comprising at least one inspection information performed between the work process and another work process;
The process acquisition unit
Extracting inspection information included in the process management data, and automatically obtaining a work process performed immediately before the time of the extracted inspection information;
A CAD data generation device characterized by that. The CAD data generation device according to claim 1 or 2,
The storage unit
Storing a pattern table defining unique pattern data corresponding to at least one component constituting the three-dimensional object;
The CAD data generation unit
The pattern data corresponding to the component is pasted on the surface exposed to the outside of the three-dimensional object and belonging to the three-dimensional object of the component, or a three-dimensional object in the vicinity of the component, Processing the three-dimensional CAD data;
It is characterized by that.
A CAD data generation device characterized by that. The CAD data generation device according to any one of claims 1 to 3,
The storage unit
Store the gap width further,
The CAD data extraction unit is
Referring to the comparison table, a three-dimensional object associated with the extracted first work process group is specified, and the specified three-dimensional object is extracted from the three-dimensional CAD object as a first three-dimensional object group And specifying a three-dimensional object other than the first three-dimensional object group, extracting the specified three-dimensional object from the three-dimensional CAD object as a second three-dimensional object group,
The CAD data generating device is
A first dividing plane is a boundary between the first three-dimensional object to be configured from the extracted first three-dimensional object group and the second three-dimensional object to be configured from the extracted second three-dimensional object group. Further having a dividing plane setting unit to set as
The CAD data generation unit
The first three-dimensional object group and the first three-dimensional object group so as to divide the first three-dimensional object and the second three-dimensional object in a first divided area defined by the first dividing surface and the gap width; Generating 3D CAD data obtained by processing the second 3D object group;
A CAD data generation device characterized by that. The CAD data generation device according to any one of claims 1 to 4,
An input receiving unit for receiving an operation input for designating one or more division instruction surfaces for dividing the three-dimensional object;
A CAD data processing unit for processing the three-dimensional CAD data so as to divide the three-dimensional object in the second divided region defined by the division instruction surface and the gap width;
Further having
A CAD data generation device characterized by that. The CAD data generation device according to claim 4 or 5,
The gap width is defined according to a three-dimensional modeling resolution of a three-dimensional printer on which the three-dimensional object is printed.
A CAD data generation device characterized by that. The CAD data generation device according to any one of claims 4 to 6,
The storage unit
Storing a pattern table defining unique pattern data corresponding to at least one component constituting the three-dimensional object;
The CAD data generation unit
The surface that divides the three-dimensional object, and the pattern data corresponding to the component is pasted on the three-dimensional object of the component or a surface belonging to a three-dimensional object in the vicinity of the component, Processing 3D CAD data,
A CAD data generation device characterized by that.   A three-dimensional model formed by a three-dimensional printer using CAD data generated by the CAD data generation device according to claim 1.   A CAD data generation program for causing a computer to function as the CAD data generation apparatus according to claim 1.   A computer-readable storage medium storing the CAD data generation program according to claim 9.

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