CN106649444B - Method and device for CAE database system to acquire CAD data - Google Patents
Method and device for CAE database system to acquire CAD data Download PDFInfo
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Abstract
The invention provides a method and a device for acquiring CAD data by a CAE database system, wherein the method comprises the following steps: according to CAD data needing to be acquired by a CAE database system, acquiring BOM information of a bill of material of the CAD data from a PDM database system; searching whether the BOM exists in the CAE database system or not according to the information of the BOM; when the CAE database system is searched to have no BOM, establishing the BOM in the CAE database system, and writing the CAD data into the specified position of the established BOM; and when the BOM exists in the CAE database system, judging whether the CAD data exists in the specified position of the BOM, and if the CAD data does not exist in the specified position of the BOM, writing the CAD data into the specified position of the BOM. The method and the device for acquiring the CAD data by the CAE database system can realize that the CAE database system acquires and effectively stores the needed CAD data from the PDM database system.
Description
Technical Field
The invention relates to the technical field of databases, in particular to a method and a device for acquiring Computer Aided Design (CAD) data by a Computer Aided Engineering (CAE) database system.
Background
At present, the CAE database system is in the process of development, while the product data management PDM database system is relatively mature, and the CAD data is generally managed in the PDM database system. The data management modes of the CAE database system mainly include two modes, one mode is that the CAE data is directly managed in the PDM database system, and the other mode is that the CAE data is managed through an independent CAE database system. For the first mode, because the CAD data and the CAE data are managed in the same system, the data can be managed in the same mode, and the problem of version tracing of the CAD data and the CAE data does not exist; for the second way of managing data, when the problem of version tracing of CAD data and CAE data is considered, the PDM database system and the CAE database system need to be associated through some information, so as to implement traceability. Meanwhile, the CAD data can not stay in the CAE system for a long time, so that the uniqueness of the data in an enterprise range is improved.
At present, no method for acquiring and effectively storing CAD data from a PDM database system by a CAE database system exists. Therefore, the CAE database system cannot efficiently acquire CAD data from the PDM database system and store the CAD data.
Disclosure of Invention
In order to solve the technical problem, the invention provides a method and a device for acquiring CAD data by a CAE database system, so as to solve the problem that the CAE database system cannot acquire and effectively store the CAD data from a PDM database system.
Specifically, the method comprises the following technical scheme:
the invention provides a method for acquiring CAD data by a CAE database system, which comprises the following steps:
according to CAD data needing to be acquired by a CAE database system, acquiring BOM information of the CAD data from a PDM database system;
searching whether the BOM exists in the CAE database system or not according to the information of the BOM;
when the CAE database system is searched to have no BOM, establishing the BOM in the CAE database system, and writing the CAD data into the specified position of the established BOM;
and when the BOM exists in the CAE database system, judging whether the CAD data exists in the specified position of the BOM, and if the CAD data does not exist in the specified position of the BOM, writing the CAD data into the specified position of the BOM.
Optionally, the information of the BOM includes a header ID and a version number.
Optionally, the method further comprises:
for each part of the CAD data, judging whether the CAE database system has grids with required specifications;
when the CAE database system does not have grids with required specifications, carrying out grid division on the parts of the CAD data, and writing the grids into the specified positions of the BOM or the created BOM;
if the CAE database system has the grids with the required specification, judging whether the existing grids with the required specification can be reused;
if the existing grid with the required specification can be reused, the existing grid with the required specification is referred to;
and if the existing grids with the required specifications cannot be reused, performing grid division on the parts of the CAD data, and writing the grids into the specified positions of the BOM or the created BOM.
Optionally, the method further comprises:
and carrying out gridding division on each part of the CAD data, and writing grids into the specified positions of the BOM or the created BOM.
Optionally, after the gridding of each part of the CAD data, the method further comprises:
setting a CAD data cleaning condition, and cleaning the CAD data meeting the CAD data cleaning condition in the BOM or the designated position of the created BOM.
The invention also provides a device for acquiring CAD data by the CAE database system, which comprises:
the acquisition module is used for acquiring BOM information of the CAD data from the PDM database system according to the CAD data required to be acquired by the CAE database system;
the retrieval module is used for retrieving whether the BOM exists in the CAE database system according to the information of the BOM;
the creating module is used for creating the BOM in the CAE database system when the BOM does not exist in the CAE database system, and writing the CAD data into the specified position of the created BOM;
and the writing module is used for judging whether the CAD data exists in the specified position of the BOM or not when the BOM exists in the CAE database system, and writing the CAD data into the specified position of the BOM if the CAD data does not exist in the specified position of the BOM.
Optionally, the information of the BOM acquired by the acquiring module includes a header ID and a version number.
Optionally, the processing module is specifically configured to:
for each part of the CAD data, judging whether the CAE database system has grids with required specifications;
when the CAE database system does not have grids with required specifications, carrying out grid division on the parts of the CAD data, and writing the grids into the specified positions of the BOM or the created BOM;
if the CAE database system has the grids with the required specification, judging whether the existing grids with the required specification can be reused;
if the existing grid with the required specification can be reused, the existing grid with the required specification is referred to;
and if the existing grids with the required specifications cannot be reused, performing grid division on the parts of the CAD data, and writing the grids into the specified positions of the BOM or the created BOM.
Optionally, the processing module is specifically configured to:
and carrying out gridding division on each part of the CAD data, and writing grids into the specified positions of the BOM or the created BOM.
Optionally, the apparatus further includes a clearing module configured to set CAD data clearing conditions and clear CAD data satisfying the CAD data clearing conditions in the designated location of the BOM or the created BOM.
The technical scheme provided by the embodiment of the invention has the beneficial effects that:
the method and the device for acquiring the CAD data by the CAE database system provided by the invention judge whether the BOM exists in the CAE database system by matching the BOM information of the CAD data which needs to be acquired from the PDM database system, create the BOM when the BOM does not exist in the CAE database system, and write the CAD data into the designated position of the created BOM; when the BOM exists in the CAE database system, whether CAD data exist in the designated position of the existing BOM or not is judged, if the CAD data do not exist in the designated position of the BOM, the CAD data are written into the designated position of the existing BOM, so that the CAE database system can acquire and effectively store the needed CAD data from the PDM database system, and repeated storage of the CAD data in the CAE database system can be avoided.
The method and the device for acquiring the CAD data by the CAE database system can also clear the CAD data after the CAE database system acquires and stores the BOM information of the CAD data so as to ensure the uniqueness of the CAD data in a company range.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a flowchart of a method for acquiring CAD data by a CAE database system according to an embodiment of the present invention;
fig. 2 is a block diagram of an apparatus for acquiring CAD data by a CAE database system according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions and advantages of the present invention clearer, the following will describe embodiments of the present invention in further detail with reference to the accompanying drawings.
Example one
The embodiment provides a method for acquiring CAD data by a CAE database system, which comprises steps S101, S102, S103 and S104 as shown in FIG. 1. The steps are described in detail below.
Step S101: and acquiring BOM information of the CAD data from the PDM database system according to the CAD data required to be acquired by the CAE database system.
The process of obtaining the BOM information of the CAD data may be that the PDM database system pushes the BOM information to the CAE database system, or that the PDM database system directly retrieves and obtains the BOM information of the CAD data.
Specifically, the information of the BOM may include a header ID and a version number.
Step S102: and searching whether the BOM exists in the CAE database system or not according to the information of the BOM.
Specifically, according to BOM information pushed by or directly retrieved from the PDM database system, the BOM information is retrieved and matched in the CAE database system. And if the BOM matched with the head node ID and the version number of the BOM is searched in the CAE database system, indicating that the BOM exists in the CAE database system. And if the BOM matched with the head node ID and the version number of the BOM is not searched in the CAE database system, indicating that the BOM does not exist in the CAE database system.
It should be noted that, the BOM in the CAE database system is based on the ID and version number of the head node as management, rather than the node ID and version number of each BOM row as management, and the BOM with the same head node ID and version number is not allowed to appear in the CAE database system repeatedly, i.e. the head node ID and version number of the BOM in the CAE database system are unique. After the PDM database system pushes the CAE database system or obtains the BOM information of the CAD data from the PDM database system, the information of the BOM in the CAE database system only needs to be matched, and the information of the BOM does not need to be matched with each BOM line of the BOM, so that the efficiency is high.
Step S103: and when the CAE database system is searched to have no BOM, creating the BOM in the CAE database system, and writing the CAD data into the specified position of the created BOM.
Specifically, the specified location of the BOM may be a specified location of a BOM row.
Step S104: and when the BOM exists in the CAE database system, judging whether CAD data exists in the specified position of the BOM, and if the CAD data does not exist in the specified position of the BOM, writing the CAD data into the specified position of the BOM.
Step S102, when determining that the BOM exists in the CAE database system, further determining whether CAD data exists at the specified position of the BOM. Specifically, the specified location of the BOM may be a specified location of a BOM row. The CAD data in the CAE database system is attached to the corresponding BOM, but not to a single BOM line, that is, if CAD data exists in any BOM level in a certain BOM, the BOM contains the CAD data.
And if the CAD data does not exist in the specified position of the BOM, the CAD data is required to be written into the specified positions of the corresponding BOM rows one by one.
After this, the CAD data can be gridded, which can be done in two ways.
In the first approach, in order to ensure the uniqueness of grids with the same specification in the CAE database system, for each part of CAD data, it is determined whether the grid with the required specification already exists in the CAE database system. And when the CAE database system does not have grids of the specification required by the parts of the CAD data, carrying out grid division on the parts of the CAD data, and writing the obtained grids into the specified positions of the lines of the existing BOM or the created BOM.
If the CAE database system has grids of the needed specifications of the parts of the CAD data, judging whether the existing grids of the needed specifications can be reused or not; if the existing grids with the required specification can be reused, the grids do not need to be repeatedly divided, the existing grids with the required specification do not need to be copied to the existing BOM or the specified position of the row of the created BOM, only the reference relation between the two BOMs needs to be established, the grids are directly referenced, and the uniqueness of the grids with the same specification of a single part in the CAE database system is ensured; and if the existing grids with the required specifications cannot be reused, performing grid division on the parts of the CAD data, and writing the grids into the designated positions of the existing BOM or the created BOM.
Specifically, when the version number of the BOM corresponding to the grid of the required specification is the same as the existing BOM or the created BOM, the grid of the required specification may be reused; when the version number of the BOM corresponding to the grid with the required specification is different from the existing BOM or the created BOM, the grid with the required specification cannot be reused.
And in the second approach, the uniqueness of grids with the same specification in the CAE database system is not considered, each part of the CAD data is subjected to grid division, and the obtained grids are written into the designated positions of the existing BOM or the created BOM.
In practice, in order to ensure the uniqueness of CAD data in a company scope, CAD data in a CAE system needs to be cleaned, and only data such as structure and attribute information of a BOM, a grid model, and the like are reserved. Specifically, the CAD data cleaning condition is set first, and the CAD data satisfying the CAD data cleaning condition is cleaned. It should be noted that the condition for cleaning the CAD data may be a time period, for example, cleaning once every half year, so that it is not necessary to clean the CAD data each time, which can reduce the overhead of system operation resources and ensure the system operation speed.
The method for acquiring the CAD data by the CAE database system provided by the embodiment can realize that the CAE database system acquires and effectively stores the needed CAD data from the PDM database system, avoid repeated storage of the CAD data in the CAE database system, clear the CAD data in the CAE database system after the grids of all parts of the CAD data are established, and ensure the uniqueness of the CAD data in a company range.
Example two
Corresponding to the first embodiment, the present embodiment provides an apparatus for acquiring CAD data by a CAE database system, as shown in fig. 2, including an acquiring module 201, a retrieving module 202, a creating module 203, and a writing module 204. Each module is described in detail below.
The obtaining module 201 is configured to obtain, according to the CAD data that needs to be obtained by the CAE database system, information of the BOM of the CAD data from the PDM database system.
The process of acquiring the BOM information of the CAD data by the acquiring module 201 may be that the PDM database system pushes the BOM information to the CAE database system, or that the PDM database system directly retrieves and acquires the BOM information of the CAD data.
Specifically, the information of the BOM may include a header ID and a version number.
And the retrieval module 202 is configured to retrieve whether the BOM exists in the CAE database system according to the information of the BOM.
Specifically, according to BOM information pushed by or directly retrieved from the PDM database system, the BOM information is retrieved and matched in the CAE database system. And if the BOM matched with the head node ID and the version number of the BOM is searched in the CAE database system, indicating that the BOM exists in the CAE database system. And if the BOM matched with the head node ID and the version number of the BOM is not searched in the CAE database system, indicating that the BOM does not exist in the CAE database system.
It should be noted that the ID and version number of the head node of each BOM in the CAE database system are used as the basis for management, rather than the node ID and version number of each BOM row, and the BOM with the same head node ID and version number is not allowed to appear in the CAE database system repeatedly, i.e., the head node ID and version number of the BOM in the CAE database system are unique. After the PDM database system pushes the CAE database system or obtains the BOM information of the CAD data from the PDM database system, the information of the BOM in the CAE database system only needs to be matched, and the information of the BOM does not need to be matched with each BOM line of the BOM, so that the efficiency is high.
And the creating module 203 is used for creating the BOM in the CAE database system when the CAE database system is searched and the BOM does not exist, and writing the CAD data into the specified position of the created BOM.
Specifically, the specified location of the BOM may be a specified location of a BOM row.
The writing module 204 is configured to, when the BOM is found in the CAE database system, determine whether CAD data exists at the specified position of the BOM, and write the CAD data into the specified position of the BOM if the CAD data does not exist at the specified position of the BOM.
When the search module 202 searches that the BOM exists in the CAE database system, it needs to further determine whether CAD data exists in the specified position of the BOM. Specifically, the specified location of the BOM may be a specified location of a BOM row. The CAD data in the CAE database system is attached to the corresponding BOM, but not to a single BOM line, that is, if CAD data exists in any BOM level in a certain BOM, the BOM contains the CAD data.
And if the CAD data does not exist in the specified position of the BOM, the CAD data is required to be written into the specified positions of the corresponding BOM rows one by one.
After this, the CAD data can be subjected to a grid processing, which can be achieved by two methods.
In the first approach, in order to ensure the uniqueness of grids with the same specification in the CAE database system, for each part of CAD data, it is determined whether the grid with the required specification already exists in the CAE database system. And when the CAE database system does not have grids of the specification required by the parts of the CAD data, carrying out grid division on the parts of the CAD data, and writing the obtained grids into the specified positions of the lines of the existing BOM or the created BOM.
If the CAE database system has grids of the needed specifications of the parts of the CAD data, judging whether the existing grids of the needed specifications can be reused or not; if the existing grids with the required specification can be reused, the grids do not need to be repeatedly divided, the existing grids with the required specification do not need to be copied to the existing BOM or the specified position of the row of the created BOM, only the reference relation between the two BOMs needs to be established, the grids are directly referenced, and the uniqueness of the grids with the same specification of a single part in the CAE database system is ensured; and if the existing grids with the required specifications cannot be reused, performing grid division on the parts of the CAD data, and writing the grids into the specified positions of the BOM or the created BOM.
Specifically, when the version number of the BOM corresponding to the grid of the required specification is the same as the existing BOM or the created BOM, the grid of the required specification may be reused; when the version number of the BOM corresponding to the grid with the required specification is different from the existing BOM or the created BOM, the grid with the required specification cannot be reused.
And in the second approach, the uniqueness of grids with the same specification in the CAE database system is not considered, each part of the CAD data is subjected to grid division, and the obtained grids are written into the designated positions of the existing BOM or the created BOM.
In practice, in order to ensure the uniqueness of CAD data in a company scope, CAD data in a CAE system needs to be cleaned, and only data such as structure and attribute information of a BOM, a grid model, and the like are reserved. Specifically, the CAD data cleaning condition is set first, and the CAD data satisfying the CAD data cleaning condition is cleaned. It should be noted that the condition for cleaning the CAD data may be a time period, for example, cleaning once every half year, so that it is not necessary to clean the CAD data each time, which can reduce the overhead of system operation resources and ensure the system operation speed.
Since the second embodiment corresponds to the first embodiment, the beneficial effects brought by the second embodiment are the same, and are not described herein again.
In the embodiments provided in the present application, it should be understood that the disclosed method and apparatus are merely illustrative, for example, the division of the steps and modules is only one logical division, and other divisions may be realized in practice. The method and the device can be realized by running corresponding software and hardware through a computer device.
The above description is only for facilitating the understanding of the technical solutions of the present invention by those skilled in the art, and is not intended to limit the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A method for acquiring CAD data by a CAE database system of Computer Aided Engineering (CAE) is characterized by comprising the following steps:
according to CAD data needing to be acquired by a CAE database system, acquiring BOM information of a bill of material of the CAD data from a Product Data Management (PDM) database system, wherein the BOM information comprises a head node ID and a version number;
according to the information of the BOM, searching whether the BOM exists in the CAE database system or not comprises the following steps: if the BOM matched with the head node ID and the version number of the BOM is searched in the CAE database system, the BOM existing in the CAE database system is searched; if the BOM matched with the head node ID and the version number of the BOM is not searched in the CAE database system, the BOM does not exist in the CAE database system;
when the CAE database system is searched to have no BOM, establishing the BOM in the CAE database system, and writing the CAD data into the specified position of the established BOM;
when the BOM exists in the CAE database system, judging whether the CAD data exists in the specified position of the BOM, and if the CAD data does not exist in the specified position of the BOM, writing the CAD data into the specified position of the BOM;
the method further comprises the following steps:
for each part of the CAD data, judging whether the CAE database system has grids with required specifications;
when the CAE database system does not have grids with required specifications, carrying out grid division on the parts of the CAD data, and writing the grids into the specified positions of the BOM or the created BOM;
if the CAE database system has the grids with the required specification, judging whether the existing grids with the required specification can be reused;
if the existing grid with the required specification can be reused, the existing grid with the required specification is referred to;
and if the existing grids with the required specifications cannot be reused, performing grid division on the parts of the CAD data, and writing the grids into the specified positions of the BOM or the created BOM.
2. The method of claim 1, further comprising:
and carrying out gridding division on each part of the CAD data, and writing grids into the specified positions of the BOM or the created BOM.
3. The method of claim 1, further comprising:
setting a CAD data cleaning condition, and cleaning the CAD data meeting the CAD data cleaning condition in the BOM or the designated position of the created BOM.
4. An apparatus for acquiring CAD data by a CAE database system, comprising:
the acquisition module is used for acquiring BOM information of the CAD data from the PDM database system according to the CAD data required to be acquired by the CAE database system, wherein the BOM information comprises a head node ID and a version number;
the retrieval module is used for retrieving whether the BOM exists in the CAE database system according to the information of the BOM, and comprises the following steps: if the BOM matched with the head node ID and the version number of the BOM is searched in the CAE database system, the BOM existing in the CAE database system is searched; if the BOM matched with the head node ID and the version number of the BOM is not searched in the CAE database system, the BOM does not exist in the CAE database system;
the creating module is used for creating the BOM in the CAE database system when the BOM does not exist in the CAE database system, and writing the CAD data into the specified position of the created BOM;
the writing module is used for judging whether the CAD data exists in the specified position of the BOM or not when the BOM exists in the CAE database system, and writing the CAD data into the specified position of the BOM if the CAD data does not exist in the specified position of the BOM;
the device further comprises: a processing module, the processing module specifically configured to:
for each part of the CAD data, judging whether the CAE database system has grids with required specifications;
when the CAE database system does not have grids with required specifications, carrying out grid division on the parts of the CAD data, and writing the grids into the specified positions of the BOM or the created BOM;
if the CAE database system has the grids with the required specification, judging whether the existing grids with the required specification can be reused;
if the existing grid with the required specification can be reused, the existing grid with the required specification is referred to;
and if the existing grids with the required specifications cannot be reused, performing grid division on the parts of the CAD data, and writing the grids into the specified positions of the BOM or the created BOM.
5. The apparatus for obtaining CAD data of claim 4, wherein the processing module is specifically configured to:
and carrying out gridding division on each part of the CAD data, and writing grids into the specified positions of the BOM or the created BOM.
6. The device for acquiring CAD data of CAE database system according to claim 4, characterized in that, the device further comprises a clearing module for setting CAD data clearing conditions and clearing CAD data satisfying the CAD data clearing conditions in the specified position of the BOM or the created BOM.
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| CN101515308A (en) * | 2009-03-31 | 2009-08-26 | 上海同济同捷科技股份有限公司 | Data management system for vehicle products and collaborative design method thereof |
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