Knowledge-Intensive CAD: Introduction and a Research Agenda (original) (raw)
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ScienceDirect Development of an approach for Knowledge-Based System for CAD modelling
elsevier, 2018
In the process of reducing the production cost and satisfying the customer and to sustain in the current volatile market, the manufacturing companies are looking for alternate processes and methods of designing and manufacturing. The conventional CAD/CAM tools are developed to meet the general needs of the market, but not the rapid or specific requirements of the market or customer. Consequently, the companies are looking to customize or tailor the CAD/CAM tools to improve their effectiveness. For this reason, the scope of research in the field of customization of designing tools has improved rapidly in the recent time. This paper discusses an introductory approach for developing an knowledge based system for CAD modelling using customization process of an CAD/CAM tool. The intension behind the development of the system is to reduce the production time and cost. The effectiveness of the proposed system has been examined using an industrial case study.
Development of an approach for Knowledge-Based System for CAD modelling
Materials Today: Proceedings, 2018
In the process of reducing the production cost and satisfying the customer and to sustain in the current volatile market, the manufacturing companies are looking for alternate processes and methods of designing and manufacturing. The conventional CAD/CAM tools are developed to meet the general needs of the market, but not the rapid or specific requirements of the market or customer. Consequently, the companies are looking to customize or tailor the CAD/CAM tools to improve their effectiveness. For this reason, the scope of research in the field of customization of designing tools has improved rapidly in the recent time. This paper discusses an introductory approach for developing an knowledge based system for CAD modelling using customization process of an CAD/CAM tool. The intension behind the development of the system is to reduce the production time and cost. The effectiveness of the proposed system has been examined using an industrial case study.
Integration of Design Tools and Knowledge Capture into a CAD System: A Case Study
Concurrent Engineering, 2010
Conceptual design phase is partially supported by product lifecycle management/computer-aided design (PLM/CAD) systems causing discontinuity of the design information flow: customer needs -functional requirements -key characteristics -design parameters (DPs) -geometric DPs. Aiming to address this issue, it is proposed a knowledge-based approach is proposed to integrate quality function deployment, failure mode and effects analysis, and axiomatic design into a commercial PLM/CAD system. A case study, main subject of this article, was carried out to validate the proposed process, to evaluate, by a pilot development, how the commercial PLM/CAD modules and application programming interface could support the information flow, and based on the pilot scheme results to propose a full development framework.
Knowledge Intensive Computer Aided Design: Past, Present and Future
Proceedings of the IFIP TC5 WG5.2 Third Workshop on Knowledge Intensive CAD, 2000
This paper is a report of the past, present and future research in knowledge intensive computer aided design (KIC). This paper reports the two previous workshops on KIC and provides the discussions and conclusions reached by the present KIC workshop (KIC-3). Three working groups and one invited paper that were formed from the attendees at KIC-3 are briefly discussed. The groups were assigned to discuss knowledge life cycle, ontology, knowledge intensive design (KID) and knowledge representations. Finally, we provide some guideline for the future research in KIC. It discusses the challenges and opportunities involved in KIC research, such as strategy and technology of knowledge management, system implementation for integration under design support systems, practical applications and evaluation of KIC, and life cycle knowledge as the focused content ofKIC.
Technological Knowledge Embedded in a Feature-based CAD Model
2004
Among different information systems used in the product development, the most widely used are CAD systems. They are used for product modelling and for producing technical documentation. Current CAD systems include only a small part of the knowledge for product embodiment, usually in the form of specialized knowledge, for example in the cases of making bores, plate bending and producing moulds for casting.
From Customer Needs to Design Parameters: Description of a Knowledge Based and Functionnal Cad Model
2009
Since the last decade, considering the globalization process of the economy, the market evolution has tended to reduce product costs and to decrease time devoted to the product design and development. In this context, it is also important to consider the growing need for improving product performance and for integrating user specifications very early in the design process. In order to answer these needs, this paper proposes a specific design method based on Axiomatic Design methodology and a functional analysis in order to reduce the time dedicated to routine engineering. This method is directly integrated into our self-developed PLM system-Product Lifecycle Management-in order to work in a worldwide and collaborative design environment. The main objective of our methodology is to define the CAD model geometry according to the modifications and the customer needs. In order to manage such control, we can identify functional parameters and functional rules through the functional requirements and the input constraints. Moreover, we can extract the specific parameters and the specific rules from the older CAD models stored in the Product Data Management system or PDM from the previous and validated project. Our method explains how to obtain and link the different parameter types and rules through the definition of a theoretical Functional Knowledge which relates a 3D geometry entity to a customer need. This knowledge aims at giving an input to a knowledge management system. It also defines a specific architecture of the 3D CAD product based on the system components divided in functional entities. This specific architecture is used in order to perform and lay the foundation of a Knowledge-Based Engineering methodology or KBE. Moreover, this specific CAD architecture gives us a possibility to develop our data mining methods which are included into our KBE approach.
To hold and have their share in the present unpredictable market, the companies are heading toward the alternative techniques for designing and manufacturing. Web-based technologies have the capability to blend into the context of engineering design and manufacturing. This paper illustrates a preliminary approach for developing an online knowledge-based system for CAD modeling and manufacturing. The purpose of developing this system is to cut down the CAD modeling and manufacturing time and thereby reducing the production cost. The parametric modeling technique has been incorporated in the proposed system along with the macro codes for generation of the CAD model. The generated CAD model is the intermediate output of the proposed system and is the input to the CNC code generator to carry out the manufacturing processes. An inference engine and relevant Web UI were developed for assisting the design engineers.
Leveraging 3D CAD Data in Product Life Cycle: Exchange – Visualization – Collaboration
With their practical introduction by the 1970's, virtual product data have emerged to a major technical source of intelligence in manufacturing. Modern organization have since then developed and continuously improved strategies, methods and tools to feed the individual needs of business domains, multidisciplinary teams and supply chain to master the growing complexity of virtual product data and manufacturing processes. Three principal activities are associated to the repurposing of virtual product data. These are Exchange, Visualization and Communication of the manufacturing intelligence from its virtual product representation perspective. One development approach alongside PLM, which declares the 3D CAD model as the record of authority and the source for which all other documentation flows is Model-Based-Design (MBD). By emphasizing digital CAD file use for collaboration at the beginning of development, it is the ground for a fully integrated and collaborative environment founded on a 3D model based definition detailed, documented and shared across the enterprise to enable rapid, seamless, and affordable deployment of products from concept to disposal. Since the practical introduction of virtual product data by the 1970's, several CAD interoperability and visualization formats have indeed been developed to support the aforementioned strategies. Most of them, however, have not yet provided the expected outcome mainly due to their lack of versatility and primary focus on only selected business need. This paper analyses methods and tools used in virtual product development to leverage 3D CAD data across the entire life cycle. It presents a set of versatile concepts for mastering exchange, aware and unaware visualization and collaboration from single technical packages fit purposely for different domains and disciplines.