检索结果-南通市图书馆

International Technology and Innovation Conference 2006

作者： lan hongbo, ding yucheng, hong jim, lu bingheng amt institute, xi’an jiaotong university, xi’an 710049, china School of Mechanical Engineering, Shandong university, Jinan, 250061, china

It is especially difficult to capture both exterior and interior shape data of a complex part with high accuracy and low cost by using the current reverse engineering measuring methods. This paper presents a novel cross-sectional imaging measurement system for reverse engineering based on existing NC milling machine, which can simultaneously acquire the full cross-sectional contours of a part with complex external and internal surfaces. The principle and architecture of the system are described. Furthermore, some key issues to implement the measuring system are discussed in detail. Finally, a real case is employed to illustrate the applications of the system. As a result, this system provides a feasible and useful scheme for many enterprises to construct their own reverse measuring system based on existing equipments to aid rapid product development and extend the function of existing equipments. It will potentially find widespread application in industrial reverse measurement due to its advantages including high accuracy, rapid construction and low cost.

关键词： Reverse engineering cross-sectional image measurement 3D reconstruction NC milling machine.

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Mold deformation in soft UV-nanoimprint lithography

引用

Science china(Technological Sciences) 2009年第2期52卷 294-302页

作者： lan hongbo ding yucheng LIU hongZhong QUE YeRong TAO WeiWei LI HanSong lu bingheng State Key Laboratory for Manufacturing System Engineering Xi’an Jiaotong UniversityXi’an 710049China School of Mechanical Engineering Shandong UniversityJinan 250061China

UV-nanoimprint lithography (UV-NIL) using a soft mold is a promising technique with low cost and high throughput for producing the submicron scale large-area patterns. However, the deformations of the soft mold during imprinting process which can cause serious consequences have to be understood for the practical application of the process. This paper investigated the deformation of the soft mold by theoretical analyses, numerical simulations, and experimental studies. We simulated the mold deformation using a simplified model and finite element method. The simulation and the related experimental results agree well with each other. Through the investigation, the mechanism and affected factors of the mold deformation are revealed, and some useful conclusions have been achieved. These results will be valuable in optimizing the imprinting process conditions and mold design for improving the quality of transferred patterns.