The establishment of the standard parts library makes full use of the feature-based parametric solid modeling function provided by SolidWorks, and defines the geometric constraints and size constraints of the standard parts in the modeling process. At the same time, corresponding design variables such as D, d, L, etc. are established for the feature sizes that need parameter driving, and the standard parts template is driven by changing the values ​​of these variables to generate standard parts that meet the requirements.
The design of the standard part parameter database is the key to the whole system. This design introduces the front-end and back-end ideas in database application development. It uses Access2000 to create a standard part database backend, embedding complex and diverse data. The way of linking is built into the database to create a relational database; the maintenance and update of the database is performed on the back end. Utilizing VB's powerful visual programming and database access capabilities, a user-friendly interface is created, the front end of the database, and the basic operations of the user are performed at the front end. This effectively separates data management from regular use to ensure data independence and security.
When establishing the standard part parameter database, first analyze the data about the standard parts in the parts manual, and use Access to establish a database for each standard part, such as key parameter database, bolt parameter database, and sales parameter database. Each database consists of data to store different types of standard parts database, such as ordinary flat key data under the key parameter database, guided flat key data, etc.; as well as cylindrical pin data, tapered pin data and thread cones under the pin parameter database Sales data, etc. In order to save resources, it is possible to put data of different forms into similar data and form the same standard piece of data into the same data. After the database is built, you can connect to specific data through data controls in your application. Using the main parameter input by the user as an index, the corresponding parameter can be read out by the Find method.
After the interface driver and application design have completed the above design, the parameterized driving function of the standard parts library can be realized by the SolidWorks API function and the VB programming language, so that the appropriate size parts can be selected according to the user's needs.
Building an application is an important step in implementing parametric design. This is the decision-making step for parameterization. 2 is the 3D standard library application development process. The data drive interface design based on SolidWorks is mainly divided into the following three aspects: application program interface establishment; connection database; standard part size drive and modeling. For the user interface design, this aspect is more flexible, users can design the interface according to their own needs, as long as it can achieve practical, convenient, concise and beautiful features.
Conclusion SolidWorks is one of the more powerful three-dimensional feature modeling software designed for design. It is easy to operate and has a strong openness. The establishment of the 3D standard parts library through the API interface and VB programming provided by the software itself provides an effective way to solve the rapid drawing of a large number of standard parts in mold design and mechanical design, and creates a later design and manufacturing automation. Convenient conditions.
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