For the SolidWorks 2001 system, which supports parametric modeling, creating a 3D standard parts library is significantly simplified. Instead of designing each part from scratch, users only need to create template models for various standard components. The program can then automatically adjust dimensions based on parameterized inputs. The specific implementation involves retrieving parameter values from a database and corresponding graphic templates, then using the SolidWorks API to drive the size changes. This approach ensures that new models are generated without repeating the same design process, effectively enabling the creation of a fully parameterized standard parts library.
SolidWorks 2001 supports data exchange with other CAD systems through standard file formats. Standard parts designed in SolidWorks can be exported in different formats and imported into software like Pro/ENGINEER, UG, MDT, or SolidEdge. This allows for seamless data sharing during the design phase, eliminating the need to build separate standard parts libraries for each system.
Data extraction can be achieved through multiple interfaces such as OLEDB, ADO, and ODBC. ADO (ActiveX Data Objects) provides a flexible and simple way to access various data sources. It works with any ODBC-compliant database and is built as a COM-based component, making it independent of the programming language used. As an efficient and widely adopted technology, ADO has largely replaced older data access methods. In this system, ADO is used as the main interface for database operations, ensuring code reusability, operational efficiency, and easier integration with other CAD systems.
SolidWorks 2001 also offers strong macro capabilities, which greatly simplifies the development process. For standard parts of the same type but different sizes, the only variation is in the parameter values. Therefore, there's no need to record the entire modeling process. Instead, only the steps involved in modifying the driving dimensions are captured. These key values are then replaced with variables in the macro file. The variable data is read from a parameter table stored in the database, and the macro is saved and integrated into a VB application for use.
As an example of secondary development, the following steps demonstrate how to create a hex bolt part library based on the SolidWorks 2001 API:
1. Create a hex bolt model in SolidWorks 2001 using national standard series dimensions as the driving parameters, and record the process of modifying all the relevant dimensions.
2. Set up a database file named "hex_bolt_1.mdb" in Access 2000 according to the GB30 national standard.
3. Develop the program using the VB6.0 interface.
4. Run the database based on user requirements, retrieve the standard part parameter data, select the appropriate model file, and generate the required 3D standard parts by driving the data accordingly.
The system structure includes a block diagram and some sample code:
```vb
Dim swApp As Object
Dim Part As Object
Dim d, s, h, m, l, ral, a2, aa As Double
Set swApp = CreateObject("SldWorks.Application")
```
This approach streamlines the design process, reduces redundancy, and enhances flexibility when working with standard components across different CAD platforms.
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