工艺规划与CADCAM数控机床系统集成.doc

欢迎阅读本文档，希望本文档能对您有所帮助!A feasible approach to the integration of CAD and CAPP 综合方法与总体思路Although current CAD systems are declared to be feature-based, in fact, the so-called feature is just a modeling macro or menu name such as Protrusion, Revolution, Cutout, Block, etc., instead of a design feature or manufacturing feature in accordance with engineering practice. Consequently, product model data insufficiency and incompatibility between varieties of application systems are still the major barriers to system integration, especially the integration of design and process planning. This paper proposes a practical solution for a bi-directional integration of CAD and CAPP on the platform of commercial CAD systems. The key techniques such as feature recognition and conversion, feature parameter and constraint extraction, feature tree reconstruction, technical information processing, process planning, automatic process drawing marking and 3D material stock CAD model generating are discussed. And the extracted features and their related technical information and knowledge are encapsulated together with the geometry-oriented CAD model to form an integrated product information model to facilitate effective integration with the downstream activities. The integrated CAD/CAPP system is implemented on a commercial CAD package, UGS/SolidEdge. A case study and industry implementation illustrate the feasibility of the approach proposed.Article Outline1. Introduction2. Related research work and review 2.1. Feature recognition and technical information processing2.2. Process planning2.3. System integration3. The proposed methodology 3.1. System architecture3.2. Information integration3.3. Function model4. Feature recognition and conversion 4.1. Feature recognition and conversion algorithm4.2. Manufacturing feature recognition and reconstruction5. Process planning 5.1. Process decision-making5.2. Process selection and operation sequencing optimization6. Stock model and process drawing generation 6.1. Stock model generating6.2. Process drawing generating6.3. Other aided functions7. ConclusionsReferencesA framework for extending computer aided process planning to include business activities and computer aided design and manufacturing (CAD/CAM) data retrieval 工艺过程规划与CAD/CAM 制造单元的数据提取与互换框架（包含商业运作过程中的产品修改过程）Computer aided process planning (CAPP) systems have had limited success in integrating business functions and product manufacturing due to the inaccessibility and incompatibility of information residing in proprietary software. While large companies have developed or purchased complex order management and engineering applications, smaller manufacturers continue to use semi-automated and manual methods for managing information throughout the lifecycle of each new product and component. There is a need for reconfigurable and reprogrammable systems that combine advances in computer aided design (CAD/Computer Aided Manufacturing (CAM) technology and intelligent machining with product data management for documentation and cost control. The goal of this research is to demonstrate an architecture in which customer service, CAPP and a costing methodology known as activity based costing (ABC) are incorporated into a single system, thereby allowing companies to monitor and study how expenditures are incurred and which resources are being used by each job. The material presented in this paper is the result of a two year university and industry sponsored research project in which professors and students at the Costa Rica Institute of Technology developed a software application for FEMA Industrial S.A., a local machining and fabrication shop with sixty five employees and both conventional and CNC capabilities. The final results represent not only a significant contribution to local industry and to the students’ education but, also to the continuing growth of CAPP. Implementing better decision making tools and standardizing transactions in digital format would reduce the workload on critical personnel and archive valuable knowledge for analyzing company methods and expertise.Article Outline1. Introduction2. Background information 2.1. Review of existing work in computer aided process planning (CAPP)2.2. Activity based costing (ABC) methodology2.3. Application programming interface (API)3. Industry evaluation and company selection 3.1. Industry study details3.2. Company selection4. System design and functionality 4.1. Graphical user interface (GUI)4.2. Description of modules5. Case study6. Results of implementation phase7. ConclusionsAcknowledgementsReferencesApplication of genetic algorithm to computer-aided process planning in preliminary and detailed planning  工艺过程规划与工艺细节设计的神经网络算法Computer-aided process planning (CAPP) is an important interface between computer-aided design (CAD) and computer-aided manufacturing (CAM) in the c。