JP2007286778A - Device, method and program for processing repeat design - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the workload of a designer by making it easy for the designer to discriminate the change necessity/non-necessity of each assembly in an assembly model in repeat design. <P>SOLUTION: A three-dimensional CAD processing part 10 inputs the designation information of change parts in an assembly model as the origin of repeat design. An assembly tree retrieving part 12 retrieves the high order assembly of parts whose change has been instructed in the assembly tree, and a flag setting/releasing part 13 sets the flag of the assembly where a flag showing the change necessity/non-necessity shows the impossibility or non-necessity of change in the result of retrieval as the necessity of change. A parts/assembly data changing part 14 changes the data of the assembly where the flag of the necessity of change is set as the assembly of a new model, and the data are stored through a data management part 20 in a database 30. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a diversion design processing apparatus, a diversion design processing method, and a diversion design processing program that can easily design a new 3D model using a designed 3D model or a 3D model under design in a three-dimensional CAD system. It is about.

  In 3D models that use three-dimensional (3D) CAD, most CAD systems manage the data in the tree structure of parts and assemblies that combine them, and display the tree to understand the components of the 3D model. I can do it.

  FIG. 14 is a diagram illustrating an example of an assembly tree. The leaves of the tree are parts, and the upper nodes are assemblies. In particular, the top assembly is called a TOP assembly. Each part and assembly is defined with a product name and specification for identification. The specification is identification information associated with, for example, a drawing number or a product number.

  The specification of the TOP assembly A shown in FIG. 14 is “A0001”, which is composed of two SUB assemblies B, SUB assembly C, SUB assembly E, two parts F, and part L. The SUB assembly B is composed of part F and part G. The SUB assembly C includes part F, part H, and SUB assembly D. The SUB assembly D includes part I and part J. The SUB assembly E is composed of part F and part K.

  FIG. 15 is a diagram showing an example of an assembly parts table. The assembly tree as shown in FIG. 14 is managed by the parts table (also referred to as BOM) of each assembly as shown in FIG.

  As a system for storing 3D models using such a tree structure, there is a system called 3D-PDM (Product Design Manager). The tree structure is also used in the 3D-PDM system, so that it is easy for the user. Display is easy to understand.

  As a conventional technique for supporting diversion design in which data of a completed 3D model is diverted to design a new 3D model, there are techniques described in Patent Document 1 and Patent Document 2, for example.

  In the technique described in Patent Document 1, the actual design data and the required specification data are stored for each performance item for the purpose of presenting the designer with proven design data having a specification value closer to the performance item. By calculating the difference between the specification values, design data that can be used is retrieved and presented to the designer.

  In addition, in the technique described in Patent Document 2, a component stored in a component table is realized in order to realize a design system adapted to both work of arrangement adjustment and component editing and to improve the applicability of component elements. Extracts only the placement information necessary for placement adjustment from the data and adjusts the placement of the component, and extracts only the component element editing information necessary for editing the component element from the component table and edits the component element A component element editing tool is available.

However, in any of the techniques described in Patent Document 1 and Patent Document 2, how to manage the data during the diversion design in the diversion design of the 3D model, such as extraction of assemblies that need to be updated, double update, etc. It does not solve specific implementation issues such as how to prevent unnecessary assembly updates.
JP-A-2005-276126 JP 2005-108023 A

  Conventionally, the importance of design data management in diversion design has not been recognized, and the names of all SUB assemblies up to TOP assembly can be changed or new assemblies can be changed in response to deletion, modification, or addition of diversion design parts. The work to change was done by the designer looking at the assembly tree and searching manually. For this reason, an assembly with more than a few thousand parts was a huge work, and many mistakes were frequently made.

  FIG. 16 is a diagram for explaining a problem in the conventional diversion design. For example, the diversion design is performed using design data of a 3D model of TOP assembly A (specification: A0001). Here, if the part G, which is the component part of the second SUB assembly B, is changed to the part M1, the component part of the upper SUB assembly B (specification: A0002) will change, so it will be changed to a new product name and specification. There is a need to. Further, the upper TOP assembly A (specification: A0001) also has to be changed to a new product name and specification because the components change.

  Similarly, when the part J, which is a component of the SUB assembly D, is replaced with another part N1, the product name and specifications of the upper SUB assembly D and the higher SUB assembly C must be changed to new ones. At this time, the product name and specification of TOP assembly A (specification: A0001) also need to be changed. However, when part G is changed to part M1, the product name and specification of TOP assembly A (specification: A0001) are already changed. Processing changes depending on whether or not. If it has already been changed, it is necessary to replace the part J with another part N1 so that the product name and specifications do not contradict each other. In addition, it is necessary to prevent unnecessary product names and specifications from being defined by double update of product names and specifications for TOP assembly A.

  Conventionally, all changes in parts and assembly data in such a diversion design have to be performed by the designer in consideration of data inconsistencies and waste of definition information. There was a problem that it was easy to occur and it took a long time to work. In particular, when a semi-finished product model is used for diversion design as well as a completed model, or when a new model is created by further diverting a model under diversion design, data management is difficult. Was remarkable.

  The present invention is intended to solve the above-mentioned problems, and in the diversion design of 3D CAD, if some parts or assemblies are replaced with other parts or assemblies for the assemblies and parts below the TOP assembly, they must be changed. It is an object of the present invention to provide a means for the system to manage information for identifying data that should not be changed and data that must not be changed, and to reduce the workload of the designer.

  In order to solve the above-mentioned problem, the first invention is a diversion design processing apparatus for creating a new assembly model by diverting an existing assembly model in 3D CAD and changing a part thereof. Data storage means for managing and storing the parts and assembly data constituting the assembly model in a tree structure with a read-only flag, and parts to be changed in the existing assembly model stored in the data storage means or The top assembly is searched for the assembly with the read-only flag out of the upper assembly in the assembly tree that includes the means for inputting information specifying the assembly and the part or assembly specified as the change target. Set the assembly read-only flag Means for dividing, characterized in that it comprises a means for changing the data of the assembly to release the read-only flag as an assembly of a new model, and means for storing a result of changing in the data storage device.

  As a result, in the assembly model under diversion design, there is no change in the assembly for the assembly with the read-only flag, and the assembly for which the read-only flag is released can be easily changed. It becomes possible to discriminate, and data management can be easily performed so that no contradiction occurs.

  The second invention is a diversion design processing apparatus for creating a new assembly model by diverting an existing assembly model in a three-dimensional CAD and changing a part thereof, and configures the existing assembly model. Data storage means for managing and storing data of parts and assemblies to be managed in a tree structure and storing a diversion design flag indicating whether each assembly is an assembly under diversion design in addition to the data of each assembly; Means for inputting information for designating a part or assembly to be changed in an existing assembly model stored in the data storage means, and a higher level assembly in an assembly tree subordinate to the part or assembly designated for change, An assembly in which the diversion design flag is OFF Means for searching the assembly, turning on the diversion design flag of the searched assembly, means for changing the assembly data for which the diversion design flag is turned on as an assembly of a new model, and the result of the change in the data storage means. Means for storing.

  As a result, not only the assembly model of the finished product but also the assembly model of the semi-finished product can be used for the diversion design, and it is easily determined by the diversion design flag whether the assembly should be changed. Will be able to.

  Further, the second invention can be improved as follows. In the diversion design processing device improved by the second invention, the parts and assembly data constituting the existing assembly model are managed and stored in a tree structure, and the diversion design tree information is held for the assembly model under diversion design. And a data storage means for adding a diversion design flag indicating whether or not each assembly is an assembly under diversion design to the data of each assembly, and a change target in the existing assembly model stored in the data storage means Of the higher-level assemblies in the assembly tree that include the means to input information specifying parts or assemblies, and the diverted design tree information for the assembly model being diverted, and the part or assembly specified as the change target The diversion design flag is OFF A means for searching the assembly up to the top assembly, turning on the diversion design flag of the searched assembly, means for changing the assembly data for which the diversion design flag is ON as a new model assembly, and the result of the change as the data And means for storing in the storage means.

  As a result, it becomes possible to use the assembly model in the diversion design for other diversion designs, and easily determine whether the assembly should be changed for each diversion design by using the diversion design tree information and the diversion design flag. It becomes possible to discriminate.

  According to the present invention, in an assembly model under diversion design, an assembly that should be changed and an assembly that should not be changed can be easily discriminated, and a new assembly can be changed twice. It will be possible to prevent mistakes and ensure that the diversion design can be implemented easily.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of the present invention.

  The diversion design processing device 1 is a device including a CPU and a memory, and includes a three-dimensional CAD processing unit 10 and a data management unit 20 realized by the CPU and a software program. The data management unit 20 is, for example, 3D-PDM software, but is not necessarily PDM, and may be normal database management software.

  The three-dimensional CAD processing unit 10 has a function of conventional generally known 3D-CAD software, and as a function for diversion design, a changed part / assembly input unit 11, an assembly tree search unit 12, a flag A setting / releasing unit 13 and a part / assembly data changing unit 14 are provided. The part / assembly data change unit 14 includes a change necessity determination unit 15 that determines whether data change is necessary.

  In addition, the data management unit 20 includes an approval processing unit 21 that performs an approval process as to whether or not to register a diverted 3D model in the database 30 as a finished product. The approval processing unit 21 may exist in the three-dimensional CAD processing unit 10.

  The database 30 stores CAD data 31 created by the three-dimensional CAD processing unit 10. The three-dimensional CAD processing unit 10 accesses the CAD data 31 in the database 30 via the data management unit 20. The CAD data 31 has a flag 32 for identifying whether or not the assembly in the assembly tree is new in the diversion design for each assembly.

[Embodiment 1]
In the first embodiment, an example in which a diversion design is performed based on an approved assembly of an end product and the diversion source assembly model (hereinafter referred to as the original assembly model) is changed by a single editing will be described. To do.

  Each part and assembly in the approved original assembly model is provided with a read-only flag (hereinafter referred to as RO (Read Only) flag) for prohibiting update. In the first embodiment, this RO flag is used as a flag 32 for identifying whether a part or assembly in the assembly tree is new in the diversion design.

  FIG. 2 is a diagram showing an example of changing the approved original assembly model by one editing in the diversion design.

  FIG. 2A shows an assembly tree of an original assembly model that is an approved finished product. This assembly tree is the same as the assembly tree of FIG. 14 used in the description of the prior art. The parts table corresponding to this assembly tree is as shown in FIG. The RO flag is attached to each part and assembly in the assembly model as a finished product.

  In the original assembly model of FIG. 2 (A), the changed part / assembly input unit 11 receives a part G, which is a component part of the second SUB assembly B, and a SUB assembly D from the input / output device 2 by a designer's editing operation. Suppose that a change instruction for replacing the part J, which is a component of the above, with a part M1 (specification: B0008) and a part N1 (specification: B0009), respectively, is input.

  The assembly tree search unit 12 sequentially traces the upper assembly from the part G and the part J that are changed in the assembly tree to the TOP assembly, and extracts all assemblies on the path. The flag setting / releasing unit 13 cancels (turns off) the RO flag of the extracted assembly (including the TOP assembly).

  Thereby, the change necessity determination unit 15 in the part / assembly data change unit 14 can determine whether the assembly needs to be changed depending on whether the RO flag is OFF. If the RO flag is OFF, the parts / assembly data changing unit 14 retrieves definition information such as the product name and specifications of the assembly from the designer or the data of the parts table managed by the data management unit 20 Based on the result, change to the new one. Specifically, the parts table shown in FIG. 15 that needs to be changed is copied to create a new parts table.

  FIG. 2B shows the assembly tree of the model after the diversion design. By changing the part G with the ellipse in the original assembly model to the part M1, the RO flag of the upper SUB assembly B is turned OFF and changed to the SUB assembly B1 (specification: A0007). By changing the part J with the ellipse in the assembly model to the part N1, the RO flags of the upper SUB assembly D and SUB assembly C are turned OFF, and the SUB assembly D1 (specification: A0009) and the SUB assembly C1 are turned off, respectively. (Specification: A0008). The TOP assembly A is also changed to a TOP assembly A1 (specification: A0006) as a new model.

  As described above, the two parts with the ellipse in the original assembly model are changed, and the bold part up to the TOP assembly shown in the model after diversion design in Fig. 2 (B) becomes the new design. The name and specifications of the diverted design will be changed. On the other hand, the parts and assemblies with the RO flag are not changed, and the same product names and specifications as the original assembly model are maintained.

[Embodiment 2]
In the second embodiment, an example will be described in which the design is diverted based on the approved assembly of the finished product, and the original assembly model is changed in N edits (N ≧ 2).

  Each part and assembly in the approved original assembly model is provided with a read-only flag (RO flag) for prohibiting updating, as in the first embodiment.

  FIG. 3 is a diagram illustrating an example of changing an approved original assembly model by two edits in diversion design.

  FIG. 3A shows an assembly tree of an original assembly model that is an approved finished product, which is similar to the example of FIG. In the original assembly model of FIG. 3A, in the first editing, the part G, which is a component of the second SUB assembly B, is changed to the part M1, and once the editing process is completed, the second editing is performed. Assume that part J, which is a component part of SUB assembly D, is changed to part N1 by editing.

  In the first editing, the changed part / assembly input unit 11 converts the part G, which is a component part of the second SUB assembly B, from the input / output device 2 to the part M1 (specification: B0008) by the designer's editing operation. When the replacement change instruction is input, the assembly tree search unit 12 traces the assembly at the higher part of the part G at the change point back to the TOP assembly in the assembly tree, and extracts the SUB assembly B and the TOP assembly A on the path. The flag setting / releasing unit 13 cancels (turns off) the RO flag of these assemblies. The part / assembly data changing unit 14 changes the SUB assembly B and the TOP assembly A for which the RO flag is OFF to SUB assembly B1 (specification: A0007) and TOP assembly A1 (specification: A0006), respectively.

  Next, in the second editing, the changed part / assembly input unit 11 changes the part J, which is a component of the SUB assembly D, to the part N1 (specification: B0009) from the input / output device 2 by the designer's editing operation. When the replacement change instruction is input, the assembly tree search unit 12 traces the assembly higher than the part J, which is the changed part, back to the TOP assembly in the assembly tree, and extracts the SUB assembly D, SUB assembly C, and TOP assembly A1 on the path. To do. Here, it can be seen that the TOP assembly A1 does not need to be changed again because the RO flag has already been turned off in the first editing. The flag setting / releasing unit 13 cancels (turns off) the RO flags of the SUB assembly D and SUB assembly C, and the parts / assembly data changing unit 14 sets the SUB assembly D and SUB assembly C whose RO flags are newly turned off. Are changed to SUB assembly D1 (specification: A0009) and SUB assembly C1 (specification: A0008), respectively. For the TOP assembly A1, it is possible to confirm that the RO flag has already been turned OFF, and to suppress duplicate changes.

  FIG. 3B shows an assembly tree of the model after the diversion design. The result of the change is the same as the one-time editing shown in FIG. 2B by appropriately referring to the RO flag even when the change is made twice in the diversion design.

[Embodiment 3]
In the first and second embodiments described above, an example in which diversion design is performed based on an approved assembly of completed products has been described. When an assembly model that is an unapproved semi-finished product is used as an original assembly model, the original assembly model may or may not have the RO flag.

  In other words, an unapproved assembly model usually has a proprietary right indicating that the designer (or client terminal) is allowed to update the data, and a case where there is no exclusive right. When the exclusive right is not given to the designer, the assembly model is provided with an RO flag indicating that updating is prohibited and only reference is permitted, so as in the case of the first and second embodiments. , RO data can be used to identify whether or not parts / assemblies need to be changed, and necessary data in the diversion design can be updated.

  On the other hand, when an unapproved assembly model for which the designer has exclusive rights is changed as the original assembly model in the diversion design, the RO flag cannot be used because the original assembly model does not have the RO flag. When changing at once, for example, parts and assemblies may be listed, and only a part to be changed is made a new model, and a route in the assembly tree may be automatically selected. Whether it should be changed is determined based on the structure of the original tree.

  FIG. 4 is a diagram illustrating an example of changing an original assembly model having an unapproved exclusive right in one-time editing in the diversion design. As shown in Fig. 4 (A), the original assembly model with the unapproved exclusive right does not have the RO flag. However, when the diversion design is completed by only one editing operation, the part G, part Since it is possible to easily extract and list the parts and assemblies indicated by bold lines in FIG. 4B from the two changed portions of J, it is only necessary to update those portions to a new model.

  However, if the original assembly model with unapproved exclusive rights is changed N times (N ≧ 2) in the diversion design, the assembly on the tree path going back from the changed location to the TOP assembly Because it is impossible to determine whether or not it has been changed in the previous editing, there is a risk of multiple changes.

  Therefore, in the third embodiment, instead of using the RO flag to determine whether or not it is necessary to change, a new diversion design flag is added to the data of each part and assembly, and the change is made depending on whether or not the diversion design flag is attached. Whether or not is necessary is determined. That is, in the third embodiment, a diversion design flag is added to the assembly management data changed by the diversion design, and it is possible to distinguish the new assembly from the original assembly in the new model after the diversion design below the TOP assembly.

  FIG. 5 is a diagram showing an embodiment in which a new model is created by adding a diversion design flag in the diversion design so that the necessity of change can be determined.

  FIG. 5A shows an assembly tree of the original assembly model used for the diversion design, which is the same as the example of FIG. However, since this is an assembly model with unapproved exclusive rights, the RO flag is not attached.

  In the original assembly model shown in FIG. 5A, in the first editing, the part G, which is a component of the second SUB assembly B, is changed to the part M1, and once the editing process is completed, the second editing is performed. Assume that part J, which is a component part of SUB assembly D, is changed to part N1 by editing.

  In the first editing, the changed part / assembly input unit 11 converts the part G, which is a component part of the second SUB assembly B, from the input / output device 2 to the part M1 (specification: B0008) by the designer's editing operation. When the replacement change instruction is input, the assembly tree search unit 12 traces the assembly at the higher part of the part G at the change point back to the TOP assembly in the assembly tree, and extracts the SUB assembly B and the TOP assembly A on the path. The flag setting / releasing unit 13 attaches a diversion design flag to these assemblies. The part / assembly data changing unit 14 changes the SUB assembly B and TOP assembly A with the diversion design flag to SUB assembly B1 (specification: A0007) and TOP assembly A1 (specification: A0006), respectively.

  Next, in the second editing, the changed part / assembly input unit 11 changes the part J, which is a component of the SUB assembly D, to the part N1 (specification: B0009) from the input / output device 2 by the designer's editing operation. When the replacement change instruction is input, the assembly tree search unit 12 traces the assembly higher than the part J, which is the changed part, back to the TOP assembly in the assembly tree, and extracts the SUB assembly D, SUB assembly C, and TOP assembly A1 on the path. To do. Here, it is understood that the TOP assembly A1 does not need to be changed again because the diversion design flag has already been attached in the first editing. The flag setting / releasing unit 13 adds a diversion design flag to the SUB assembly D and the SUB assembly C, and the part / assembly data changing unit 14 sets the SUB assembly D and the SUB assembly C to which the diversion design flag is newly added. They are changed to SUB assembly D1 (specification: A0009) and SUB assembly C1 (specification: A0008), respectively. The TOP assembly A1 can be confirmed to have a diversion design flag, and duplicate changes can be suppressed.

  FIG. 5B shows an assembly tree of the model after the diversion design. The modified assembly has a diversion design flag. As described above, by attaching the diversion design flag to the changed assembly, it is found that the assembly has been diverted and it is understood that it is not necessary to change it in the second and subsequent editing operations. The changed parts M1 and N1 may or may not have a diversion design flag.

[Embodiment 4]
The diversion design is used in various places. For example, the “A model” is used for the “A ′ model” design, and the “A ′ model” in the diversion design is used for the “A” model design. Such cases may be necessary. As a fourth embodiment, an example in which an assembly model under diversion design is used for another diversion design will be described. The original assembly model under diversion design shall be unapproved and have exclusive rights. In this case, since the RO flag is not attached to each assembly, the existing assembly and the new assembly cannot be distinguished at the time of editing using the RO flag. Further, as in the case of the third embodiment, when trying to distinguish an assembly that has been changed by the diversion design flag, since the original assembly model is in the diversion design, the diversion design flag is that of the original assembly model or a new one. It is not possible to distinguish between models.

  Therefore, in the fourth embodiment, a diversion design tree is added under the TOP assembly in addition to the conventional assembly tree, and the diversion design flag currently being used is added and managed. By setting such diversion design tree information in the management data of the TOP assembly and adding a diversion design flag to the assembly in that tree, the status of only the currently used diversion design is not affected by the past diversion design. Will be able to manage.

  FIG. 6 is a diagram illustrating an example of managing a diversion design model using a diversion design tree and a diversion design flag.

  FIG. 6A shows the assembly tree of the original assembly model with the unapproved exclusive right. Even if this is in the diversion design, it will be used in the diversion design in the same way as described below. be able to. In the original assembly model shown in FIG. 6A, in the first editing, the part H that is a component of the SUB assembly C1 is changed to the part H1, and once the editing process is completed, the SUB is processed in the second editing. Assume that part K, which is a component of assembly E, is changed to part K1.

  In the first editing, the changed part / assembly input unit 11 performs a change instruction to replace the part H, which is a component of the SUB assembly C1, with the part H1 (specification: B0010) from the input / output device 2 by the designer's editing operation. First, management information indicating the diverted design tree is set in the management data of the TOP assembly so that the assembly under the TOP assembly belongs to a completely different tree from the original assembly model tree. To do.

  Subsequent editing operations are the same as in the case of using the diversion design flag described in the third embodiment. Since the diversion design tree indicates that the diversion design is a new diversion design, even if the assembly model under diversion design is used as the original assembly model, the new model cannot be discriminated due to competition of diversion design flags.

[Process flow]
FIG. 7 shows an editing process flow in the case of managing diversion design data using the RO flag.

  First, when an assembly model used for diversion design is designated by an input from the designer, a tree of the assembly model is displayed on the input / output device 2 (step S1). Next, in the assembly model tree displayed on the input / output device 2, designation information of parts and assemblies to be changed for diversion design is input (step S2). It is determined whether the change is the first editing in the diversion design or the second or later editing (step S3). If it is the first time, step S4 is executed, and if it is the second or later, step S5 is executed. Whether the editing is for the first time or for the second time or later may be specified by the designer, or information indicating the editing state may be managed internally and determined accordingly.

  In step S4, the RO flag of the upper assembly up to the TOP assembly is turned OFF, and those assemblies are newly created. In step S5, the changed parts and the upper assembly of the assembly are sequentially traced, and the RO flag of the upper assembly immediately before the assembly in which the RO flag is OFF is turned OFF to make those assemblies new. That is, if the RO flag is already OFF in the upper assembly, it is not changed twice. The above steps S2 to S5 are repeated until an instruction to end editing is received from the designer (step S6).

  FIG. 8 is a process flowchart showing an example of an approval process for a model that has been diverted and designed using the RO flag. In this example, an example of checking the consistency of data stored in the database 30 at the time of approval processing will be described, but it is also possible to perform a similar check when editing result data is stored in the database 30 in editing processing. It is.

  First, for the assembly model to be approved, the assembly tree is sequentially traced from the TOP assembly (step S11). It is determined whether or not the RO flag is OFF for each assembly in the assembly tree (step S12). If it is not OFF, the assembly has not been changed, and the process proceeds to step S15. If the RO flag is OFF, the process proceeds to step S13, where it is determined whether the product name, specifications, etc. of the assembly have been updated and there is no contradiction with the existing data. If correct, the process proceeds to step S15. . If the RO flag is OFF and there is a change in the subordinate parts, there will be a warning if there is a contradiction such as the product name and specifications are the same as the assembly before the change in the original assembly model. A message is output (step S14).

  In step S15, it is determined whether or not the tree is finished. The above check is performed for all assemblies in the assembly tree. If the tree is finished, the process proceeds to step S16.

  In step S16, the designer confirms the approval. If the approval is confirmed, all RO flags on the assembly tree are turned on, and registered in the database 30 as a new assembly model after the diversion design. The process ends (step S17).

  FIG. 9 shows an editing process flow in the case of managing diversion design data using the diversion design flag.

  First, when an assembly model to be used for diversion design is designated by an input from a designer, a tree of the assembly model is displayed on the input / output device 2 (step S21). Next, in the assembly model tree displayed on the input / output device 2, designation information of parts and assemblies to be changed for diversion design is input (step S22). It is determined whether the change is the first editing in the diversion design or the second or later editing (step S23). If it is the first time, step S24 is executed, and if it is the second time or later, step S25 is executed.

  In step S24, the upper assembly up to the TOP assembly is made new, and a diversion design flag is attached to those management data. In step S25, the changed parts and the upper assembly of the assembly are sequentially traced, the upper assembly up to immediately before the assembly with the diverted design flag is made new, and the diverted design flag is attached. The above steps S22 to S25 are repeated until an instruction to end editing is received from the designer (step S26).

  FIG. 10 is a process flowchart illustrating an example of an approval process for a model designed for diversion using a diversion design flag. In this example, an example of checking the consistency of data stored in the database 30 at the time of approval processing will be described, but it is also possible to perform a similar check when editing result data is stored in the database 30 in editing processing. It is.

  First, for the assembly model to be approved, the assembly tree is sequentially traced from the TOP assembly (step S31). It is determined whether or not the diversion design flag is ON for each assembly in the assembly tree (step S32). If it is not ON, the assembly has not been changed, and the process proceeds to step S34. If the diversion design flag is ON, the process proceeds to step S33, where it is determined whether or not the product name, specification, etc. of the assembly has been updated and there is no contradiction with the existing data. If correct, the process proceeds to step S36. move on. Otherwise, the process proceeds to step S35.

  In step S34, it is determined whether the product name and specifications have been changed. If the product name and specifications are changed even though the diversion design flag is not ON, there is a contradiction in relation to existing data, and the process proceeds to step S35. In step S35, a warning message is output to the effect that data consistency is not achieved.

  In step S36, the above check is performed on all assemblies in the assembly tree to determine whether or not the tree has ended. If the tree has ended, the process proceeds to step S37.

  In step S37, the designer confirms the approval. If the approval is confirmed, all the diversion design flags on the assembly tree are taken (turned off), the RO flag is turned on, and they are stored in the database 30. The new assembly model after the diversion design is registered and the process is terminated (step S38).

  FIG. 11 shows an editing process flow in the case of managing diversion design data using a diversion design tree and a diversion design flag.

  First, when an assembly model to be used for diversion design is designated by an input from the designer, a tree of the assembly model is displayed on the input / output device 2 (step S41). Next, in the assembly model tree displayed on the input / output device 2, designation information of parts and assemblies to be changed for diversion design is input (step S42). It is determined whether the change is the first editing in the diversion design or the second or later editing (step S43). If it is the first editing, step S44 is executed, and if it is the second or later editing, the process proceeds to step S46.

  In step S44, the upper assembly up to the TOP assembly is made new, and a diversion design flag is attached to the management data. In step S45, a diversion design tree is created and added to the TOP assembly. Thereafter, the process proceeds to step S47.

  In step S46, the changed parts and the upper assembly of the assembly are sequentially traced, and the upper assembly up to immediately before the assembly with the diverted design flag is made new, and the diverted design flag is attached. The above steps S42 to S46 are repeated until an instruction to end editing is received from the designer (step S47).

  The approval process in the case of managing the diversion design data using the diversion design tree and the diversion design flag is the same as the example described in FIG.

  FIG. 12 shows an embodiment of a system to which the present invention is applied.

  In FIG. 12, the data management server 200 and the client PC 100 are connected via a network. A plurality of client PCs 100 may be connected. The PDM software 210 installed in the data management server 200 is a program that realizes the function of the data management unit 20 in FIG. The three-dimensional CAD software 110 is a program that realizes the function of the three-dimensional CAD processing unit 10 in FIG.

  The database 300 stores CAD data created by the three-dimensional CAD software 110. CAD data managed by the database 300 includes a tag 310 and bulk data 320. The bulk data 320 is drawing data or attribute data for each assembly or part, and the tag 310 is index data for managing the bulk data 320.

  Access to the database 300 by the three-dimensional CAD software 110 is performed via the PDM software 210. When writing CAD data into the database 300, first, a request for writing is made from the three-dimensional CAD software 110 to the PDM software 210, and the PDM software 210 performs writing to the tag 310 and writing to the bulk data 320. . On the other hand, when reading the CAD data, the PDM software 210 checks the position of the bulk data 320 from the tag 310 and reads it, and sends the read CAD data to the three-dimensional CAD software 110. When writing and reading CAD data, the PDM software 210 prevents access contention by performing access control and lock control using an RO flag or the like as necessary.

  FIG. 13 shows an example of the data structure of CAD data in this embodiment. FIG. 13A shows an example of a data structure in the case where an assembly model under diversion design is managed using only the diversion design flag. The CAD data of each assembly (including parts) in the bulk data 320 of FIG. 12 includes management data 321 and assembly CAD data 322. The management data 321 includes management information such as a name (product name), version information of the three-dimensional CAD software 110, creation date / time, last modification date / time, and various flags. The assembly CAD data 322 is entity information of data such as names, positions, and directions of parts and subassemblies. The diversion design flag 323 in the present embodiment is provided in the management data 321, and whether it is new data or existing assembly data is identified depending on whether this diversion design flag is ON or OFF. It has become so.

  FIG. 13B shows an example of a data structure when an assembly model under diversion design is managed by a diversion design tree and a diversion design flag. In the present embodiment, diversion design tree data 324 with a diversion design flag is provided in the management data 321 of the TOP assembly under diversion design. Thus, the assembly tree in the diversion design is managed for each diversion design, and whether or not each assembly in the assembly tree should be changed is determined for each diversion design by the diversion design flag.

  With the above configuration, according to the present invention, not only a completed model but also a semi-finished product model can be used for diversion design, or a model under diversion design can be further diverted to create a new model. The above process for diversion design can be realized by a computer and a software program, and the program can be provided by being recorded on a computer-readable recording medium or can be provided through a network.

  The characteristic configuration of the embodiment of the present invention is as follows.

(Appendix 1) A diversion design processing apparatus that creates a new assembly model by diverting an existing assembly model in 3D CAD and changing a part thereof.
Data storage means for managing and storing data of parts and assemblies constituting an existing assembly model in a tree structure with a read-only flag;
Means for inputting information specifying a part or assembly to be changed in an existing assembly model stored in the data storage means;
Means for searching the assembly having the read-only flag to the top assembly among the upper assemblies in the assembly tree including the part or assembly designated as the change target, and releasing the read-only flag of the searched assembly;
Means for changing the assembly data from which the read-only flag is released as a new model assembly;
A diversion design processing apparatus comprising: means for storing the changed result in the data storage means.

(Appendix 2) A diversion design processing device that creates a new assembly model by diverting an existing assembly model in 3D CAD and changing a part thereof.
The parts and assembly data that make up the existing assembly model are managed and stored in a tree structure, and a diversion design flag indicating whether or not each assembly is an assembly under diversion design is added to the data of each assembly and stored. Data storage means,
Means for inputting information specifying a part or assembly to be changed in an existing assembly model stored in the data storage means;
Of the upper assemblies in the assembly tree that includes the part or assembly specified as the change target, the assembly whose diversion design flag is OFF is searched to the top assembly, and the diversion design flag of the searched assembly is turned ON. Means,
Means for changing assembly data with the diversion design flag set to ON as an assembly of a new model;
A diversion design processing apparatus comprising: means for storing the changed result in the data storage means.

(Appendix 3) A diversion design processing device that creates a new assembly model by diverting an existing assembly model in 3D CAD and changing a part thereof.
Manage and store the parts and assembly data that make up the existing assembly model in a tree structure, retain diversion design tree information for the assembly model under diversion design, and whether each assembly is an assembly under diversion design A data storage means for storing a diversion design flag indicating whether or not the data is added to each assembly data;
Means for inputting information specifying a part or assembly to be changed in an existing assembly model stored in the data storage means;
The diversion design tree information is added to the assembly model under diversion design, and the assembly in which the diversion design flag is OFF among the upper assemblies in the assembly tree including the part or assembly specified as the change target is the top assembly. Means to turn on the diversion design flag of the searched assembly,
Means for changing assembly data with the diversion design flag set to ON as an assembly of a new model;
A diversion design processing apparatus comprising: means for storing the changed result in the data storage means.

(Additional remark 4) The diversion design processing method which the diversion design processing apparatus which produces the new assembly model by diverting the existing assembly model in 3D CAD and changing a part thereof,
The process of storing the data of parts and assemblies constituting an existing assembly model in a tree structure with a read-only flag and storing them in a data storage means,
Inputting information specifying a part or assembly to be changed in an existing assembly model stored in the data storage means;
Searching for the assembly with the read-only flag from the upper assembly in the assembly tree including the part or assembly specified as the change target to the top assembly, and releasing the read-only flag of the searched assembly;
Changing assembly data with the read-only flag off as a new model assembly;
And storing the changed result in the data storage means.

(Additional remark 5) The diversion design processing method which the diversion design processing apparatus which creates the new assembly model by diverting the existing assembly model in 3D CAD and changing a part thereof,
Data of parts and assemblies that make up an existing assembly model are managed in a tree structure, and the data of the assembly is data with a diversion design flag added indicating whether each assembly is an assembly under diversion design. The process of storing in the storage means;
Inputting information specifying a part or assembly to be changed in an existing assembly model stored in the data storage means;
Of the upper assemblies in the assembly tree that includes the part or assembly specified as the change target, the assembly whose diversion design flag is OFF is searched to the top assembly, and the diversion design flag of the searched assembly is turned ON. Process,
Changing assembly data with the diversion design flag ON as a new model assembly;
And storing the changed result in the data storage means.

(Appendix 6) A diversion design processing method executed by a diversion design processing apparatus that creates a new assembly model by diverting a part of an existing assembly model in 3D CAD and changing a part thereof.
The data of parts and assemblies constituting the existing assembly model is managed in a tree structure, and the diversion design tree information is retained for the assembly model under diversion design, and each assembly is in the diversion design for each assembly data. Storing the data with the diversion design flag indicating whether or not the data storage means in the data storage means;
Inputting information specifying a part or assembly to be changed in an existing assembly model stored in the data storage means;
The diversion design tree information is added to the assembly model under diversion design, and the assembly in which the diversion design flag is OFF among the upper assemblies in the assembly tree including the part or assembly specified as the change target is the top assembly. Search until the diversion design flag of the assembly searched,
Changing assembly data with the diversion design flag ON as a new model assembly;
And storing the changed result in the data storage means.

(Supplementary note 7) A diversion design processing program for causing a computer of a diversion design processing apparatus to create a new assembly model by diverting an existing assembly model in 3D CAD and changing a part thereof, ,
Data storage means for managing and storing data of parts and assemblies constituting an existing assembly model in a tree structure with a read-only flag;
Means for inputting information specifying a part or assembly to be changed in an existing assembly model stored in the data storage means;
Means for searching the assembly having the read-only flag to the top assembly among the upper assemblies in the assembly tree including the part or assembly designated as the change target, and releasing the read-only flag of the searched assembly;
Means for changing the assembly data from which the read-only flag is released as a new model assembly;
As means for storing the changed result in the data storage means,
A diversion design processing program for causing the computer to function.

(Supplementary note 8) A diversion design processing program for causing a computer of a diversion design processing device to create a new assembly model by diverting an existing assembly model in 3D CAD and changing a part thereof, ,
The parts and assembly data that make up the existing assembly model are managed and stored in a tree structure, and a diversion design flag indicating whether or not each assembly is an assembly under diversion design is added to the data of each assembly and stored. Data storage means,
Means for inputting information specifying a part or assembly to be changed in an existing assembly model stored in the data storage means;
Of the upper assemblies in the assembly tree that includes the part or assembly specified as the change target, the assembly whose diversion design flag is OFF is searched to the top assembly, and the diversion design flag of the searched assembly is turned ON. Means,
Means for changing assembly data with the diversion design flag set to ON as an assembly of a new model;
As means for storing the changed result in the data storage means,
A diversion design processing program for causing the computer to function.

(Supplementary Note 9) A diversion design processing program for causing a computer of a diversion design processing apparatus to create a new assembly model by diverting an existing assembly model in 3D CAD and changing a part thereof, ,
Manage and store the parts and assembly data that make up the existing assembly model in a tree structure, retain diversion design tree information for the assembly model under diversion design, and whether each assembly is an assembly under diversion design A data storage means for storing a diversion design flag indicating whether or not the data is added to each assembly data;
Means for inputting information specifying a part or assembly to be changed in an existing assembly model stored in the data storage means;
The diversion design tree information is added to the assembly model under diversion design, and the assembly in which the diversion design flag is OFF among the upper assemblies in the assembly tree including the part or assembly specified as the change target is the top assembly. Means to turn on the diversion design flag of the searched assembly,
Means for changing assembly data with the diversion design flag set to ON as an assembly of a new model;
As means for storing the changed result in the data storage means,
A diversion design processing program for causing the computer to function.

 (Supplementary Note 10) A computer-readable recording medium on which the diversion design processing program according to Supplementary Note 7, Supplementary Note 8 or Supplementary Note 9 is recorded.

It is a block diagram which shows one Embodiment of this invention. FIG. 10 is a diagram illustrating an example in which an approved original assembly model is changed by one editing in diversion design. FIG. 10 is a diagram illustrating an example of changing an approved original assembly model by two edits in diversion design. FIG. 10 is a diagram illustrating an example of changing an original assembly model having an unapproved exclusive right in a single edit in diversion design. In the diversion design, it is a diagram showing an embodiment in which a new model is created by adding a diversion design flag so that the necessity of change can be determined. It is a figure which shows the example in the case of managing the model of a diversion design using a diversion design tree and a diversion design flag. It is an edit processing flowchart in the case of managing the diversion design data using the RO flag. It is a process flowchart which shows the example of the approval process of the model which diverted design using the RO flag. It is an editing process flowchart in the case of managing the data of diversion design using a diversion design flag. It is a process flowchart which shows the example of the approval process of the model which diverted and designed using the diversion design flag. 12 is an editing process flowchart in the case of managing diversion design data using a diversion design tree and a diversion design flag. It is a figure which shows the Example of the system to which this invention is applied. It is a figure which shows the example of the data structure of CAD data in a present Example. It is a figure which shows the example of an assembly tree. It is a figure which shows the example of the parts table of an assembly. It is a figure explaining the problem in the conventional diversion design.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Diversion design processing apparatus 2 Input / output device 10 Three-dimensional CAD processing part 11 Change part / assembly input part 12 Assembly tree search part 13 Flag setting / release part 14 Parts / assembly data change part 15 Change necessity judgment part 20 Data management part 21 approval processing part 30 database 31 CAD data 32 flag

Claims (5)

A diversion design processing device that creates a new assembly model by diverting an existing assembly model in 3D CAD and changing a part thereof.
Data storage means for managing and storing data of parts and assemblies constituting an existing assembly model in a tree structure with a read-only flag;
Means for inputting information specifying a part or assembly to be changed in an existing assembly model stored in the data storage means;
Means for searching the assembly having the read-only flag to the top assembly among the upper assemblies in the assembly tree including the part or assembly designated as the change target, and releasing the read-only flag of the searched assembly;
Means for changing the assembly data from which the read-only flag is released as a new model assembly;
A diversion design processing apparatus comprising: means for storing the changed result in the data storage means. A diversion design processing device that creates a new assembly model by diverting an existing assembly model in 3D CAD and changing a part thereof.
The parts and assembly data that make up the existing assembly model are managed and stored in a tree structure, and a diversion design flag indicating whether or not each assembly is an assembly under diversion design is added to the data of each assembly and stored. Data storage means,
Means for inputting information specifying a part or assembly to be changed in an existing assembly model stored in the data storage means;
Of the upper assemblies in the assembly tree that includes the part or assembly specified as the change target, the assembly whose diversion design flag is OFF is searched to the top assembly, and the diversion design flag of the searched assembly is turned ON. Means,
Means for changing assembly data with the diversion design flag set to ON as an assembly of a new model;
A diversion design processing apparatus comprising: means for storing the changed result in the data storage means. A diversion design processing method executed by a diversion design processing apparatus for creating a new assembly model by diverting an existing assembly model in 3D CAD and changing a part thereof,
The process of storing the data of parts and assemblies constituting an existing assembly model in a tree structure with a read-only flag and storing them in a data storage means,
Inputting information specifying a part or assembly to be changed in an existing assembly model stored in the data storage means;
Searching for the assembly with the read-only flag from the upper assembly in the assembly tree including the part or assembly specified as the change target to the top assembly, and releasing the read-only flag of the searched assembly;
Changing assembly data with the read-only flag off as a new model assembly;
And storing the changed result in the data storage means. A diversion design processing program for causing a computer of a diversion design processing apparatus to create a new assembly model by diverting an existing assembly model in 3D CAD and changing a part thereof,
Data storage means for managing and storing data of parts and assemblies constituting an existing assembly model in a tree structure with a read-only flag;
Means for inputting information specifying a part or assembly to be changed in an existing assembly model stored in the data storage means;
Means for searching the assembly having the read-only flag to the top assembly among the upper assemblies in the assembly tree including the part or assembly designated as the change target, and releasing the read-only flag of the searched assembly;
Means for changing the assembly data from which the read-only flag is released as a new model assembly;
As means for storing the changed result in the data storage means,
A diversion design processing program for causing the computer to function. A diversion design processing program for causing a computer of a diversion design processing apparatus to create a new assembly model by diverting an existing assembly model in 3D CAD and changing a part thereof,
The parts and assembly data that make up the existing assembly model are managed and stored in a tree structure, and a diversion design flag indicating whether or not each assembly is an assembly under diversion design is added to the data of each assembly and stored. Data storage means,
Means for inputting information specifying a part or assembly to be changed in an existing assembly model stored in the data storage means;
Of the upper assemblies in the assembly tree that includes the part or assembly specified as the change target, the assembly whose diversion design flag is OFF is searched up to the top assembly, and the diversion design flag of the searched assembly is set to ON. Means,
Means for changing assembly data with the diversion design flag set to ON as an assembly of a new model;
As means for storing the changed result in the data storage means,
A diversion design processing program for causing the computer to function.

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