机械设计制造跟自动化 毕业设计 英文翻译资料Word下载.docx

1、机械设计制造跟自动化 毕业设计 英文翻译资料#A NOVEL INTEGRATED SYSTEM FOR RAPID PRODUCT DEVELOPMENT#This paper presents a novel integrated system of rapid product development for reducing the time and cost of product development. The system is composed of four building blocks digital prototype, virtual prototype, physic

2、al prototype and rapid tooling manufacturing system. It can aid effectively in product design, analysis, prototype, mould, and manufacturing process development by integrating closely the various advanced manufacturing technologies which involve the 3D CAD, CAE, reverse engineering, rapid prototypin

3、g and rapid tooling. Furthermore, two actual examples are provided to illustrate the application of this integrated system. The results indicate that the system has a high potential to reduce further the cycle and cost of product development.#Keywords:# Rapid product development;# rapid prototyping;

4、# integrated system.#1. Introduction#Due to the pressure of international competition and market globalization in the 21st century, there continues to be strong driving forces in industry to compete effectively by reducing manufacturing times and costs while assuring high quality products and servic

5、es. Current industries are facing the new challenges:# quick response to business opportunity has been considered as one of the most important factors to ensure company competitiveness;# manufacturing industry is evolving toward digitalization, network and globalization. Therefore, new products must

6、 be more quickly and cheaply developed, manufactured and introduced to the market. In order to meet the demand of rapid product development, the various new technologies such as reverse engineering （RE）, 3D CAD, rapid prototyping （RP）, and rapid tooling （RT） have emerged and are regarded as key enab

7、ling tools with the ability to shorten the product development and manufacturing time. For example, it has been claimed that RP can cut new product development costs by up to 70% and the time to market by 90%.1 In the form of a better design, more design possibilities, a 3D CAD model can be shown to

8、 the customer for approval and prevents misunderstandings. A virtual prototyping is employed to guide in optimization of the product design and manufacturing process planning, which may result in the accurate determination of the process parameters, and reduce the number of costly physical prototype

9、 iterations. Rapid tooling technique offers a fast and low cost method to produce moulds, and shows a high potential for faster response to market demands. When properly integrated among 3D CAD, CAE, RE, RP and RT, these technologies will play a much more important role to reduce further the develop

10、ment cycle and cost of the product production. On the basis of above technologies, a novel integrated system of rapid product development is to be founded so as to meet the requirement of rapid product development.#2. Architecture of the Integrated Development System#The development process from ini

11、tial conceptual design to commercial product is an iterative process which includes:# product design;# analysis of performance, safety and reliability;# product prototyping for experimental evaluation;# and design modification. Therefore, any step of the new product development process has a direct

12、and strong influence on time-to-market in short order. A good product development system must enable designers or design teams to consider all aspects of product design, manufacturing, selling and recycling at the early stage of the design cycle. So that design iteration and changes can be made easi

13、ly and effectively. The more fluent the feedback is the higher possibility of success the system has. Design for manufacturing （DFM） and concurrent engineering （CE） necessitate that product and process design be developed simultaneously rather than sequentially.# The integrated system of rapid produ

14、ct development is composed of four modules:# digital prototype, virtual prototype, physical prototype and rapid tooling.The product development starts from the creation of a 3D CAD model using a CAD software package. At that stage, the product geometry is defined and its aesthetic and dimensional ch

15、aracteristics are verified. The main function of digital prototype is to perform 3D CAD modelling. The CAD model is regarded as a central component of the whole system or project information base which means that in all design, analysis and manufacturing activities the same data is utilized. The pro

16、duct and its components are directly designed on a 3D CAD system （e.g.Pro/Engineer, Unigraphics, CATIA, IDEAS, etc.） during the creative design. If a physical part is ready, the model can be constructed by the reverse engineering technique. RE is a methodology for constructing CAD models of physical parts by digitizing an existing part, creating a digital model and then using it to manufacture components. RE can reduce the development cycle when redesigns become necessary for improved product qua