JP2007011825A - Shape data management program, management method and management system - Google Patents

Abstract

【Task】
When a shape model created by CAD is used in CAE, CAM, etc., an operation for correcting the shape for each purpose of use after data conversion occurs, resulting in a reduction in efficiency.
[Solution]
A means for dividing a CAD shape model into base shape data and a plurality of purpose-specific shape feature data sets, and means for adding creation conditions, creation rules, purpose of use, etc. as attribute information to the shape feature set are added. A means for retrieving the attribute information, a means for selecting a necessary shape feature set from the retrieval result, a means for synthesizing the selected shape feature set and the base shape, and a means for presenting the synthesized shape data.
[Selection] Figure 1

Description

  The present invention relates to a shape data management program, a shape data management method, and a shape data management system for processing shape data for various purposes in computer-aided shape design of products and the like.

In computer-aided design (CAD), a user generally models a final completed shape using a CAD system that supports shape design of a product or the like. After that, the shape data modeled by the CAD system is used for CAE (Computer Aided Engineering) system for performance evaluation such as strength and heat, and CAM for manufacturing.
For (Computer Aided Manufacturing) systems, it is necessary to convert data according to the purpose of use, etc., and to further modify and process it manually. Japanese Unexamined Patent Publication No. 2001-34653 (Patent Document 1) describes a design support system in which a feature group including a plurality of features is prepared for an initial model.

JP 2001-34653 A

  In CAM, shape features (features) such as holes and grooves are removed from the final shape to create intermediate shapes (intermediate shapes) for processing, and minute deformations at the tolerance dimension level are used for processing. A shape may be created.

  In the technique of Patent Document 1, for example, when editing a model by looking at the shape before processing a hole from the model, it is necessary to select and remove all the hole processing steps from the final model. When there are a large number, the procedure for selecting features to be removed becomes complicated.

  An object of the present invention is to provide a shape data management program, a management method, and a management system that can efficiently edit a model.

  One feature of the present invention is that a shape data management program, a management computer, a shape feature data set storage means for storing a plurality of sets of shape feature data in association with attribute information, and specification of conditions relating to the set of shape feature data A shape feature data set condition input means for inputting a shape, and a search based on conditions relating to the set of shape feature data input by the shape feature data set condition input means from the set of shape feature data stored in the shape feature data set A search processing means for outputting the result, and a display means for displaying the model based on the search result of the search processing means. Other features of the present invention will be described in the following section of the best mode for carrying out the invention.

  According to the present invention, shape features are grouped according to use (shape feature data set), attribute information such as annotations and related files for use purposes is assigned to the shape feature data set, and this can be searched. In addition, it can be easily reused in units of shape feature data sets.

  In the following embodiments of the present invention, shape data based on CAD is separately managed as a shape based on CAD and a set of shape features (features) such as holes / grooves / fillets, and a plurality of shape feature sets may be provided. Possible management means, and annotations, rules, and related files related to modeling or purpose of use can be added as attribute information of the shape feature set. Search means for searching this attribute information, modeling information, purpose of use, etc. , A means for inputting information for specifying a shape feature set, a search means for searching for a corresponding shape feature set using the input information as a search query, and a required shape feature from a list of search results obtained as a result A means of selecting a set and compositing the selected shape feature set and the base shape And Jo data combining means, combining shape data consisting of a display means for presenting to the user.

  FIG. 1 shows a functional block diagram of the first embodiment. FIG. 1 is an example of a functional block diagram showing the overall configuration of the present invention.

  In FIG. 1, an operator 10 inputs information indicating a required shape characteristic and purpose of use from an input unit 11. Information input from the input unit 11 is sent to the search processing unit 12 and expanded into search terms. The search processing unit searches the attribute information 17 such as annotations, shape generation rules, and related files associated with each shape feature data set 16, and the output unit 13 outputs the search result. When the operator 10 selects desired attribute information from the obtained search results, a shape feature data set corresponding to the selected attribute information is selected, and information on this shape feature data set is presented by the output unit 13.

  Here, the shape feature set may be a list of commands and parameters for generating a shape feature, or may be generated shape data.

  Further, as shown in FIG. 1, the shape feature data set 16 and the base shape data 15 may be separated, and each shape feature data set 16 may manage difference information. In this case as well, the shape feature data set corresponding to the attribute information selected by the operator 10 is selected as described above. Thereafter, this shape feature data set and base shape data are synthesized by the shape synthesis processing unit 14, and shape synthesis information is presented by the output unit 13.

  A functional block diagram of the second embodiment is shown in FIG. FIG. 2 is an example of a functional block diagram for duplicating a created shape feature data set as an example of a method for creating a shape feature data set.

  In FIG. 2, the worker 10 selects the shape feature data set A (20) from the already created shape feature data sets as being close to the purpose of use. The data set duplication processing unit 22 duplicates the shape feature data set A20 to generate a shape feature data set B (21). At this time, the data set duplication processing unit 22 stores, as duplication history data 23, that the shape feature data set B (21) is generated based on the shape feature data set A20. The specific stored data may be configured as a pair of the shape feature data set ID of the shape feature data set A20 and the shape feature data set B21, or may be configured in a tree format with the copy source as a parent. The replication history data 23 is also used to specify the range of change propagation when a change is made to the shape feature data set of the replication source.

  A functional block diagram of the third embodiment is shown in FIG. The third embodiment is an example of a functional block diagram in the case where a certain shape feature data set is changed.

In FIG. 3, the worker 10 changes the shape feature data set A (20) by the data set update processing unit 31 (arrow (1)). It is assumed that the shape feature data set A (20) has already been copied to the shape feature data set B (21) by the method described in the second embodiment. At the same time that the data set update processing unit 31 updates the shape feature data set A (20), the data set change notification processing unit 32 is activated. The data set change notification processing unit 32 checks whether or not there is a shape feature data set having the feature data set A20 as a copy source from the copy history data 23 generated by the data set copy processing unit 22, and if there is, the shape feature data set. Is notified that the shape feature data set of the copy source has been changed. Whether or not this change is reflected in the working shape feature data set is determined by the operator. In the case of reflecting, the shape feature data set B (21) is changed by the data set update processing unit 31 (arrow (2)).

  FIG. 4 shows a functional block diagram of the fourth embodiment of the present invention. The fourth embodiment is an example of a functional block diagram in the case of sharing separately managed shape feature data sets.

  In FIG. 4, the common shape feature data extraction processing unit 40 searches for a common portion from a plurality of shape feature data sets 16 and stores it as a common shape feature data set 41. If necessary, the operator adds the common shape feature data set 41 to the base shape data 15 by the data update processing unit 42, and at the same time, the corresponding portion of the common shape feature data set from each shape feature data set 16. Is deleted. Through the above processing, the common part of the shape feature data set can be easily reused, and an improvement in efficiency in creating a new shape feature data set can be expected.

  FIG. 5 shows an example of the table structure of the database of the fifth embodiment. The fifth embodiment is an example of a table structure of a database that stores the shape feature data set and attribute data described in FIGS.

In FIG. 5A, the data table 50 represents a portion related to the shape feature data set “FDS00001” as an example, but the table items include a shape feature creation date 51, a feature creation command 52, and a creation content. It consists of explanation 53 and the like. The description 53 represents the feature creation command and the content of the parameter in a natural language. The description 53 may be automatically generated from manual information of the feature creation command or may be added by the operator.

  In FIG. 5B, the data table 54 represents the correspondence between the shape feature data set and the attribute information. The table items include the creator who created the shape feature data set ID 55 and the shape feature data set 55. It includes a creator ID 56 to be identified, a creation date and time 57 of the shape feature data set, attribute information corresponding to the shape feature data set, an attribute information ID (or file name) 58 to identify the related file, and the like. In addition to the attribute information ID, a table item describing an annotation for the shape feature data set may be added as in the description 53 of FIG.

  FIG. 6 shows the flow of replication and change propagation in the sixth embodiment. The sixth embodiment shows a flow of duplication and change propagation of the shape feature data set shown in the second and third embodiments (corresponding to the duplication history data 23 in FIGS. 2 and 3).

In FIG. 6, the shape feature data set ID “FDS00001” (61) created by the worker 1 (60) is duplicated by the worker 2 (62) and the worker 3 (64), and the shape feature data set ID “ "FDS00002" (63) and "FDS00003"
Register as (65). Further, the operator 4 duplicates the shape feature data set ID “FDS00002” (63) and registers it as the shape feature data set ID “FDS00004” (67). Here, when a change occurs in the shape feature data set 61, a change notification is made to the users of the shape feature data sets 63 and 65. Further, when a change occurs in the shape feature data set 63, a change notification is made to the user of the shape feature data set 67.

  Note that it is up to the operator to determine whether or not to reflect the change contents of the copy source in the working shape feature data set.

  FIG. 7 shows a flowchart of the seventh embodiment. The seventh embodiment is an example of a flowchart showing a processing flow for realizing a search for a shape feature data set in the present invention.

  In FIG. 7, the worker inputs the purpose of use, feature creation conditions, creation rules, and the like in process 71. As an input method, you may specify the shape feature specification and the range of the parameter of the shape feature as a condition, or input in natural language such as “hole with a diameter of 10 mm…”, “use for strength analysis”, etc. Also good. In process 72, the information input in process 71 is expanded to search conditions, and attribute information and related files associated with the shape feature data set are searched. If it is input in the natural language in the process 71, this is subjected to morphological analysis, decomposed into search terms, and then subjected to full text search for attribute information and related files. In process 73, search results are displayed in a list, and attribute information or a related file is selected from the list by the operator. In process 74, the selected attribute information or the shape feature data set associated with the related file is captured and displayed. When the shape feature data set and the base shape are managed separately, the captured shape feature data set is combined with the base shape and displayed.

  In process 75, it is confirmed whether or not the shape displayed by the operator is suitable for the purpose of use. If it is available, the process proceeds to process 76, and if necessary, the shape feature data set is duplicated and edited. May be stored as a simple shape feature data set. Finally, the process proceeds to a process 78, and the process proceeds to an operation phase such as analysis or preparation for using the obtained shape.

  FIG. 8 shows a screen of the eighth embodiment. The eighth embodiment is an example of a screen for realizing a search for a shape feature data set in the present invention.

  In FIG. 8, on a screen 80, an area 81 for inputting a search condition for searching a shape feature data set, an area 82 for displaying a search result, an area 86 for displaying the contents of attribute information selected from the area 82, An area 87 for displaying the contents of the shape feature data set corresponding to the selected attribute information as a shape feature tree is displayed.

When an operator inputs a condition of a shape necessary for a natural language in the search condition input area 81 and executes a search process, the search result list display area 82 has a score 83 indicating similarity and an attribute information ID (or related file name). ) 84, the shape feature data set ID (85) is displayed as a list, and the attribute information ID (or the attribute information ID selected by the operator from the attribute information ID 84 in the search result list display area 82) is displayed in the attribute information content display area 86 (or Displays the contents of (related file name).

  FIG. 9 shows a screen of the ninth embodiment. The ninth embodiment is an example of a screen in which a three-dimensional shape display is further added to the eighth embodiment.

  In FIG. 9, a three-dimensional shape is displayed in a screen 80 and a separate screen 90. Alternatively, it may be displayed in a display area on the screen 80. A shape feature data set corresponding to the attribute information ID (or related file name) selected by the operator from the attribute ID 84 in the search result list display area 82 is displayed on the screen 90 as a three-dimensional shape. Further, in order to facilitate the editing operation of the shape feature, when a shape feature in the shape feature tree display area 87 is selected, a corresponding portion of the three-dimensional shape on the screen 90 may be highlighted. In FIG. 9, the hole creation feature group “makeHole” is removed from the shape feature tree, and “[−] (minus) makeHole” is displayed on the shape feature tree. In the shape, the corresponding hole shapes 91, 92, 93, 94 are displayed in gray.

  FIG. 10 shows an overall system configuration diagram of the tenth embodiment. The tenth embodiment is an overall system configuration diagram in the present invention when a plurality of workers perform work through a network.

In FIG. 10, each worker 100 transmits / receives data to / from the shape processing server 103 that realizes the functions of the above-described embodiments via the network 102 using the worker client 101, and the DB 106 for user management, the shape Shape data information such as a shape feature data set corresponding to each worker is displayed and provided by data input / output to a related DB (shape feature data set DB 105 and base shape DB 104).

  The present invention can also be realized by causing a computer to execute the procedure described in the above embodiment by a program.

  Traditionally, CAD modeled shapes have been collectively converted and processed by CAE and CAM for different applications, so similar shape editing processes will be carried out in various phases by various operators. Work efficiency decreases.

  According to the present invention, shape features are grouped according to use (shape feature data set), and attribute information such as annotations and related files such as the purpose of use is assigned to the shape feature data set so that it can be searched. This facilitates reuse in the shape feature data set unit.

  As a result, the data processed for each purpose of use can be reused for another purpose of use, and the efficiency of the entire design / analysis / manufacturing can be improved by reducing complicated data processing work.

It is an example of the functional block diagram which shows the whole structure of this invention. In the present invention, as an example of a method for creating a shape feature data set, it is a functional block diagram for duplicating a created shape feature data set. In this invention, it is a functional block diagram in the case of adding a change to a certain shape feature data set. In this invention, it is a functional block diagram in the case of sharing the shape feature data set managed separately. In this invention, it is a table structure of the database which stores a shape feature data set and attribute data. In the present invention, it is a flowchart showing the flow of duplication and change propagation of the shape feature data set. In this invention, it is a flowchart which shows the flow of a process for implement | achieving the search of a shape feature data set. In the present invention, it is an example of a screen for realizing a search for a shape feature data set. In this invention, it is the example of a screen which added the three-dimensional shape display to the 8th Example. In the present invention, it is an overall system configuration diagram when a plurality of workers perform work through a network.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Worker, 11 ... Input part, 12 ... Search process part, 13 ... Output part, 15 ... Shape data, 16 ... Each shape feature data set, 17 ... Attribute information.

Claims (13)

  A shape feature data set condition for inputting a shape feature data set storage means for storing a plurality of sets of shape feature data in association with attribute information of the shape feature data set, and a condition specification relating to the set of shape feature data. From the input means and the set of shape feature data stored in the shape feature data set storage means, a set of shape feature data corresponding to the condition relating to the set of shape feature data input by the shape feature data set condition input means is searched. A shape data management program that functions as search processing means for outputting the results, and display means for displaying a model based on the set of shape feature data output by the search processing means.   2. The shape data management program according to claim 1, wherein the shape feature is a hole, a groove, or a fillet.   2. The shape data management program according to claim 1, wherein the attribute information of the shape feature data set is an annotation, a creation condition, or an associated file name related to the shape feature data set.   2. The shape data management program according to claim 1, wherein the display means displays a model by superimposing a set of shape feature data output by the search processing means on a base shape of the model. program.   2. The shape data management program according to claim 1, wherein when the computer changes a certain shape feature data set, the change is also reflected in the shape feature data set based on the shape feature set. A shape data management program characterized by functioning as a means.   2. The shape data management program according to claim 1, wherein the computer includes a common shape feature data extraction unit that compares the set of shape feature data and extracts a common part of the shape feature data, and the common shape feature data extraction unit. A shape data management program that functions as a common shape feature data storage unit that stores a common part of extracted shape feature data sets.   A shape feature data set storing procedure for storing a plurality of shape feature data sets in association with attribute information of the shape feature data sets and storing them in the storage means, and shape features for inputting a specification of conditions relating to the shape feature data sets from the input means A data set condition input procedure, and a shape feature data set corresponding to a condition relating to a set of shape feature data input in the shape feature data set condition input procedure from the set of shape feature data stored in the shape feature data set storage procedure A shape data management method comprising: a search processing procedure for outputting a result of searching a set; and a display procedure for displaying a model by a display unit based on the set of shape feature data output in the search processing procedure.   8. The shape data management method according to claim 7, wherein the shape feature is a hole, a groove, or a fillet.   8. The shape data management method according to claim 7, wherein the attribute information of the shape feature data set is an annotation, a creation condition, or an associated file name related to the shape feature data set.   8. The shape data management method according to claim 7, wherein the display means has a display procedure for displaying a model by superimposing a set of shape feature data output by the search processing means on a base shape of the model. Shape data management method.   8. The shape data management method according to claim 7, wherein when a certain shape feature data set is changed, the change is reflected in the shape feature data set based on the shape feature set. A shape data management method characterized by the above.   8. The shape data management method according to claim 7, wherein a common shape feature data extraction procedure for comparing the shape feature data sets and extracting a common part of the shape feature data, and a shape extracted by the common shape feature data extraction procedure. A shape data management method comprising a common shape feature data storage procedure for storing a common part of a feature data set in a storage means. Shape feature data set storage means for storing a plurality of sets of shape feature data in association with attribute information of the shape feature data set, and shape feature data set condition input means for inputting designation of conditions relating to the shape feature data set; , A result of searching a set of shape feature data corresponding to the condition regarding the set of shape feature data input by the shape feature data set condition input means from the set of shape feature data stored in the shape feature data set storage means. A shape data management system comprising: search processing means for outputting; and display means for displaying a model based on a set of shape feature data output by the search processing means.

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