1、PDF外文：http:/ A web-based manufacturing service system for rapid product development Abstract: This paper proposes a novel integrated system of rapid product development based on rapid prototyping, and develops a networked manufacturing service system which offers bet
2、ter support for the rapid product development in small and medium sized enterprises by taking full advantage of the quickly evolving computer network and information technologies. The architecture of the networked manufacturing service system is presented. Furthermore, some of the key issues, includ
3、ing modeling and planning a manufacturing chain, selecting feasible collaborative manufacturers, queuing a manufacturing task, using the synchronously collaborative work environment, and constructing a suitable running platform, are described in detail. Java-enabled solution, together with web techn
4、iques, is employed for building such a networked service system. Finally, an actual example is provided illustrating the application of this service system. Keywords ： Rapid product development； Rapid prototyping； Service system； Web-based application 1. Introduction This is the era of
5、information technology. Information technology has influenced every realm of society, and dramatically impacted on the traditional industry.Current industries are facing the new challenges:quick response to business opportunity has been considered as one of the most important factors to ensure compa
6、ny competitiveness； manufacturing industry is evolving toward digitalization, network and globalization.In order to respond to the change effectively,manufacturing strategy has to be modified from time to time in accordance with the market situation and customer demand. Any change of strategy should
7、 enable manufacturers to be better equipped themselves,with capabilities to cope with demands suchas a faster response to market changes, a shortenedlead time of production, improved quality and speed,the ability to deliver quality 2 products to global customers,and improved communications and
8、 transportationsystem 1. It is an established fact that the useof computers in design and manufacturing constitutesthe most significant opportunity for substantial productivitygain in industry. It has now been widelyaccepted that the future of manufacturing organizationswill be information-oriented,
9、 knowledge drivenand much of their daily operations will be automatedaround the global information network that connectseveryone together 2. In order to meet the demand ofrapid product development, various new technologiessuch as reverse engineering (RE), rapid prototyping (RP), and rapid tooling (R
10、T) have emerged and areregarded as enabling tools with abilities to shorten theproduct development and manufacturing time. Forexample, it has been claimed that RP can cut newproduct development costs by up to 70% and the timeto market by 90% 3. However, these equipments aretoo expensive for the smal
11、l and medium sized enterprises(SMEs), and many techniques such as 3D CADsolid modelling, RP process planning, free-form surfacesreconstruction, etc., require the high skilled personnelto complete. Therefore, it is especially difficultfor the SMEs to take full advantage of these technologiesin the pr
12、oduct development process. In order tooffer the support of rapid product development fornumerousSMEs,manyRPservice bureaus (SBs)whichcan not only manufacture physical prototype and rapidtooling but also provide other engineering services,have been established. By 2001, there are more than500 SBs all
13、 over the world. But not every SB canpossess all design and manufacturing capabilitiesrequired, it must employ effectively the externalresource to better satisfy client requirements. Namely,a virtual enterprise which usually defined as a temporaryalliance of enterprises that come together to shareth
14、eir skills, core competencies, and resource in order tobetter respond to business opportunities, whose cooperationis supported by computer networks 4 6, is tobe founded. Every SBconducts only the tasks of its corecompetencies, and depends on numerous partners tocarry out the remaining tasks that thi
15、s SB has no such manufacturing capabilities to accomplish in time.While a new thought emphasizing service quality is becoming a basic strategy 3 by which manufacturing industries can win global competition in the 21st century. Teleservice engineering is an emerging fieldwhichaddresses i
16、ssue for manufacturers and customers. As digital manufacturing technique progresses quickly, digital service will be integrated seamlessly into the digital design and manufacturing system 7. The internet, incorporating computers and multimedia, has provided tremendous potential for remote integratio
17、n and collaboration in business and manufacturing applications. In order to provide a production collaborative environment for many SMEs and SBs to implement the networked manufacturing, it is especially urgent for many SBs and SMEs to construct a service platform of networked manufacturing to speed
18、 up the product development process of the SMEs. The rest of this paper is organized as follows.Related research work is reviewed in Section 2. In Section 3, we introduce an integrated system of rapid product development based on RP. Section 4 describes the workflow and functional design of the netw
19、orked manufacturing service system. The configuration of system running platform is presented in Section 5. In Section 6, we discuss the design of internet application. A case study is demonstrated in Section 7. Finally, Section 8 concludes the paper. 2. Related research With the develo
20、pment of computer network and information technologies, the networked manufacturing techniques are playing a more and more important role in manufacturing industry. Substantial investments have been made to support the research and practice of 950networked manufacturing (telemanufacturing or global
21、manufacturing) from both the academic community and industrial bodies all over the world in recent years. A number of strategies and frameworks have been proposed. Abdel-Malek et al. 8 described a structure within which a company can outsource several of its production and design activities via internet and developed a model to aid a company in selecting among the available technological and functional alternatives to maximize its flexibility. Montreuil et al. 9 presented a strategic framework for designing and operating
