Title: Manual tool representation and positioning based on geometric reasoning in IVAE

Authors: Rundang Yang, Xiumin Fan, Feiya Fan, Huanchong Cheng

Addresses: Shanghai Shipbuilding Technology Research Institute, National Engineer Laboratory for Digital Shipbuilding, No. 851 Zhong Shan Nan Er Road, 200032, Shanghai, China. ' School of Mechanical Engineering Shanghai Jiaotong University, 1954 Huashan Road, 200030, Shanghai, China. ' School of Mechanical Engineering Shanghai Jiaotong University, 1954 Huashan Road, 200030, Shanghai, China. ' School of Mechanical Engineering Shanghai Jiaotong University, 1954 Huashan Road, 200030, Shanghai, China

Abstract: To use tools in a Virtual Environment (VE) for product assembly, a virtual tools representation method based on geometric reasoning is advanced. On this basis, a dynamic building method of a fixed relation between tool and operation object is put forward, which includes three algorithms: geometric constraint dynamic recognition, tool location solving and movement navigation. Users interactively drive tools by using a virtual hand and achieve precise positioning of the operation object. Finally, the methods are validated and an application example is introduced.

Keywords: virtual assembly; tool model representation; constraint dynamic building; tool positioning; geometric reasoning; product assembly; virtual tools; geometric constraints; tool location; movement navigation.

DOI: 10.1504/IJCAT.2008.021882

International Journal of Computer Applications in Technology, 2008 Vol.33 No.1, pp.24 - 32

Published online: 08 Dec 2008 *

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