Design And Implementation Of PDM System Based On Product Lifecycle

Economic globalization and the rapid development of information technology changethe competitive environment, patterns of development and activity space of manufacturingdeeply. In this context, product lifecycle management (PLM) came into being. PLM,managing all product-related data and processes, is the deepening and development ofproduct data management (PDM). Small and medium-sized enterprises occupy an importantposition in national development and construction. Considering the problems in the processof current small and medium manufacturing enterprises, PDM technology and product lifecycle modeling were studied in this paper. The architecture of PDM based on productlifecycle was established. A PDM system being suit for small and medium manufacturingenterprises was developed, which solves the management problem of product data in thewhole lifecycle.The main contents in this paper include:(1) By studying the concept, architecture and main functions of PDM and product lifecycle modeling technology and combining with the actual needs of an automobile company,the functional modules were designed, including user permissions management, drawingsand documents management, product structure and configuration management, workflowmanagement. The architecture based on product lifecycle in the C/S and B/S was built.(2) Based on analyzing PDM system and other systematic information integratedmodel, the specific programs that PDM integrates CAD, CAPP and CAM systems wereadvanced. Focusing on the pivotal technology of PDM and CAD integration, encapsulationmode and interface mode were combined with each other to realize the double integration ofPDM and CAD. Through using the SolidWorks API secondary development technology, aCAD plugin which integrates PDM functions was designed. An algorithm which cangenerate product structure tree automatically was studied.(3) Based on Visual Studio.Net platform, by using C#programming language andchoosing SQL Server2000as database, Object-oriented technology was applied to developa PDM system based on product lifecycle. Users and permissions were connected by role.User permissions on resources were restricted by the permission of different users, whichrealizes the strict administration of people, data and process involved in different productlifecycle stages. Other pivotal technologies related to the system development, such as drawings and documents storage method and the addition and deletion of the nodes ofproduct structure tree, were analyzed in detail to propose the particular solving scheme.