STEP-Compliant Knowledgebase in Support of Customized Product Development for SMEs

2010 ◽  
Vol 97-101 ◽  
pp. 3571-3574 ◽  
Author(s):  
Qing Song Ai ◽  
S.Q. Xie ◽  
Zu De Zhou ◽  
Quan Liu ◽  
L. Tao ◽  
...  

Nowadays, Small and medium-sized Manufacturing Enterprises (SMEs) are facing intensive competition from the global market. For these SMEs, how to better manage and record the previous Product Development (PD) knowledge has become a core issue for them to improve PD process, cut down development cost and reduce lead time. In this paper, we present our work in developing a STEP (Standard for the Exchange Product Model Data)-compliant knowledgebase for the development of customized products. The paper focuses on how to develop a STEP-compliant knowledgebase that is applicable to different types of customized products. This knowledgebase uses the STEP as a foundation. Tools are developed to model, record and search information such as customer requirements and expectations, engineering responses, product design, decision making and product machining processes, etc. The recorded product information and knowledge in the knowledgebase will then be reused for the development of customized products of similar types.

Author(s):  
M. M. Baysal ◽  
U. Roy ◽  
R. Sudarsan ◽  
R. D. Sriram ◽  
K. W. Lyons

In early design phases an effective information exchange among CAD (Computer Aided Design) tools depends on a standardized representation for the product data in all PLM (Product Lifecycle Management) tools. The NIST Core Product Model (CPM) and its extension are proposed to provide the required base-level product model that is open, non-proprietary, generic, extensible, independent of any one product development process and capable of capturing the full engineering context commonly shared in product development [1,2]. The Open Assembly Model (OAM) Model extends CPM to provide a standard representation and exchange protocol for assembly. The assembly information model emphasizes the nature and information requirements for part features and assembly relationships. The model includes both assembly as a concept and assembly as a data structure. For the latter it uses the model data structures of ISO 10303, informally known as the Standard for the Exchange of Product model data (STEP)[3]. The objective of the paper is to show how the OAM can be used to realize seamless integration of product information, with an emphasis on assembly, throughout all phases of a product design. A gearbox design example is used to illustrate the process.


2012 ◽  
Vol 248 ◽  
pp. 533-538 ◽  
Author(s):  
Qing Song Ai ◽  
Kui Mo ◽  
Yan Wang ◽  
Lei Zhao

Nowadays, most manufacturing enterprises have realized that the ability to share product information in a quick, real-time, and effective manner between geographically located team members is very crucial for them to survive in the keen competitive global market. However, the existing product information sharing systems have many problems in universality, dynamic, and portability. This paper presented a product information sharing system based on the research of the fundamental theory and key technologies of cloud manufacturing. Our work focuses on proposing a six-layer architecture of the system. For comparison, we discussed the advantages of it. Finally, to validate the architecture, we developed a prototype system. The test results show that the proposed architecture provides a commendable mechanism to better share product information.


Author(s):  
Esther A. Edwards-lwe

Abstract The ability to exchange and share product data between and within enterprises is essential for implementing the concepts of concurrent engineering as well as operating in a global market economy. STEP, the STandard for the Exchange of Product Model Data, is an international effort to standardize product information. Product information is used by manufacturing enterprise to design, produce, and maintain a product. The purpose of STEP is to prescribe a neutral mechanism capable of completely representing product data throughout the life cycle of a product. Data sharing can only be discussed in the context of a specific application. The scope of STEP data sharing architecture has progressed from a single shared facility to sharing multiple distributed facilities. This paper discusses the lessons learned from a prototype implementation of the mechanical part design process(es) captured in a network of heterogeneous computers and database management systems to allow for data exchange and sharing between and within an enterprise.


Author(s):  
Mehmet Murat Baysal ◽  
Utpal Roy

In this work, NIST’s Core Product Model (CPM) and the Open Assembly Model (OAM) are extended to integrate product information including function and behavior, with an emphasis on assembly, throughout all phases of product development. The consistency validation of product information, and the verification of modified product information are discussed. These processes ensure that the product information has no contradictions and allows tracing through associations without any deficiency or disconnection. In other words, the information model has to be complete in terms of traceability of function, behavior, spatial relationships, etc., in order to support all information exchange activities. The product information representation provides a mechanism for capturing product information and storing it in a database. This representation schema also provides necessary information for any future decision making activities at the End_Of_Life (EOL) environment, such as the replacement or reuse of any part or subassembly. When there is a need to replace one artifact with another, one must consider all of the associations of the existing artifact with other artifacts and the environment, not just functional and space requirements, and the relevant modification(s) of the associated objects has to be verified. So one can manage product lifecycle activities in different perspectives by knowing how the product information is interconnected in various domains and how its characteristics affect each other.


Author(s):  
Chih-Hsing Chu ◽  
Guo-Xun Yuan ◽  
Ching-Yi Cheng ◽  
Che-Wen Wu

This paper presents new applications of the Web-based 3D visualization technology in collaborative product development. Three software prototypes are developed with the technology for non-designer to interact with product model without the need of CAD tools. The first system allows the end customer to configure individual components of 3D assembly with a regular Web browser. It provides a simple approach to collecting the customer’s voices. Next, an integration framework is implemented that enables synchronous communications between CAD and on the shelf software tool of 3D visualization. Peer-to-peer design collaboration is thus realized. Finally, this research proposes a computation mechanism for online modification of design features based on a STL model. A Web 3D catalog is developed for customization of real industrial parts using the proposed mechanism. The implementation results of these prototypes indicate that Web-based 3D visualization is an effective interfacing technology to facilitate 3D information sharing for most product-centric activities in a simple and cost-effective manner.


Author(s):  
Chunyue Xiao ◽  
Jian Sun

Servitization has a significant impact on the upgrading and reform of the equipment manufacturing industry. From the perspective of application of high-end servitization theory in business practice of equipment manufacturing industry, based on the review of relevant literature, this paper analyzes the concept of integration delay strategy mechanism of cooperative production between enterprises and customers, and thus constructs the theoretical model framework of 4S service pilot high-end equipment manufacturing product-customer interaction experience. With the Liaoning equipment manufacturing industry as a case for quantitative analysis, the feasibility of using delay strategy in the 4S service pilot program is demonstrated, and the three-stage development plan of Liaoning 4S service pilot is outlined. The results show that: At present, in the trend of servitization of China’s equipment manufacturing enterprises, 4S service pilot high-end manufacturing product model enables equipment manufacturing enterprises to delay production time and produce according to customer orders, improve service efficiency and optimize resource allocation, and help enterprises to obtain new exclusive competitive advantages.


2011 ◽  
Vol 314-316 ◽  
pp. 1607-1611
Author(s):  
Zhong Wei Gong ◽  
Hai Cheng Yang ◽  
Rong Mo ◽  
Tao Chen

Engineering change is an important and complex activity for manufacturing enterprises. In order to improve the efficiency of engineering change, designers should pay different attentions to different nodes of product development network. In that case, a method of classifying the nodes was proposed. First, we proposed a method to cluster the nodes based on design structure matrix; then, we analyzed the indexes for evaluating the importance of nodes and studied the method of classifying the nodes of product development network; finally, the experiment of managing a type of motorcycle engine was employed to validate our method and it showed the correctness of the proposed method.


Author(s):  
Q. Z. Yang ◽  
B. Song

This paper presents a hierarchical fuzzy evaluation approach to product lifecycle sustainability assessment at conceptual design stages. The purpose is to advocate the emerging use of lifecycle engineering methods in support of evaluation and selection of design alternatives for sustainable product development. A fuzzy evaluation model is developed with a hierarchical criteria structure to represent different sustainability considerations in the technical, economic and environmental dimensions. Using the imprecise and uncertain early-stage product information, each design option is assessed by the model with respect to the hierarchical evaluation criteria. Lifecycle engineering methods, such as lifecycle assessment and lifecycle costing analysis, are applied to the generation of the evaluation criteria. This would provide designers with a more complete lifecycle view about the product’s sustainability potentials to support decision-making in evaluation and selection of conceptual designs. The proposed approach has been implemented in a sustainable design decision-support software prototype. Illustrative examples are discussed in the paper to demonstrate the use of the approach and the prototype in conceptual design selection of a consumer product.


Author(s):  
Stefan Wo¨lkl ◽  
Kristina Shea

The importance of the concept development phase in product development is contradictory to the level and amount of current computer-based support for it, especially with regards to mechanical design. Paper-based methods for conceptual design offer a far greater level of maturity and familiarity than current computational methods. Engineers usually work with software designed to address only a single stage of the concept design phase, such as requirements management tools. Integration with software covering other stages, e.g. functional modeling, is generally poor. Using the requirements for concept models outlined in the VDI 2221 guideline for systematic product development as a starting point, the authors propose an integrated product model constructed using the Systems Modeling Language (SysML) that moves beyond geometry to integrate all necessary aspects for conceptual design. These include requirements, functions and function structures, working principles and their structures as well as physical effects. In order to explore the applicability of SysML for mechanical design, a case study on the design of a passenger car’s luggage compartment cover is presented. The case study shows that many different SysML diagram types are suitable for formal modeling in mechanical concept design, though they were originally defined for software and control system development. It is then proposed that the creation and use of libraries defining generic as well as more complicated templates raises efficiency in modeling. The use of diagrams and their semantics for conceptual modeling make SysML a strong candidate for integrated product modeling of mechanical as well as mechatronic systems.


Sign in / Sign up

Export Citation Format

Share Document