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    Applications of Contact Length Models in Grinding Processes

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    Applications of Contact Length Models in Grinding Processes-1.pdf (543.8Kb)
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    Publication date
    2009
    Author
    Qi, Hong Sheng
    Mills, B.
    Xu, X.P.
    Keyword
    Grinding, Contact length, Criterion for Model Simplification
    Rights
    © 2015 Trans Tech Publications. Reproduced in accordance with the publisher's self-archiving policy.
    Peer-Reviewed
    yes
    
    Metadata
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    Abstract
    The nature of the contact behaviour between a grinding wheel and a workpiece in the grinding process has a great effect on the grinding temperature and the occurrence of thermal induced damage on the ground workpiece. It is found that the measured contact length le in grinding is considerably longer than the geometric contact length lg and the contact length due to wheel-workpiece deflection lf. The orthogonal relationship among the contact lengths, i.e. lc2 = (Rrlf)2 + lg2, reveals how the grinding force and grinding depth of cut affect the overall contact length between a grinding wheel and a workpiece in grinding processes. To make the orthogonal contact length model easy to use, attempts on modification of the model are carried out in the present study, in which the input variable of the model, Fn’, is replaced by a well-established empirical formula and specific grinding power. By applying the modified model in this paper, an analysis on the contributions of the individual factors, i.e. the wheel/workpiece deformation and the grinding depth of cut, on the overall grinding contact length is conducted under a wide range of grinding applications, i.e. from precise/shallow grinding to deep/creep-feed grinding. Finally, using a case study, the criterion of using geometric contact length lg to represent the real contact length lc, in terms of convenience versus accuracy, is discussed.
    URI
    http://hdl.handle.net/10454/7941
    Version
    Accepted Manuscript
    Citation
    Qi HS, Mills B and Xu XP (2009) Applications of Contact Length Models in Grinding Processes. Key Engineering Materials, 404: 113-122.
    Link to publisher’s version
    http://dx.doi.org/10.4028/www.scientific.net/KEM.404.113
    Type
    Article
    Collections
    Engineering and Digital Technology Publications

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