THE PREDICTION OF CUTTING FORCE IN BALL-END MILLING

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Due to the development of CNC machining centers and automatic programming software, the ball-end milling have become the most widely used machining process for sculptured surfaces. In this study, the ball-end milling process has been analysed, and its cutting force model has been developed to predict the instantaneous cutting force on given machining conditions. The development of the model is based on the analysis of cutting geometry of the ball-end mill with plane rake faces. A cutting edge of the ball-end mill was considered as a series of infinitesimal elements, and the geometry of a cutting edge element was analysed to calculate the necessary parameters for its oblique cutting process assuming that each cutting edge was straight. The oblique cutting process in the small cutting edge element has been analysed as an orthogonal cutting process in the plane containing the cutting velocity and chip flow vectors. And with the orthogonal cutting data obtained from end turning tests on thin-walled tubes over wide range of cutting and tooling conditions, the cutting forces of ball-end milling could be predicted using the model. The predicted cutting forces have shown a fairly good agreement with test results in various machining modes.
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Issue Date
1991
Language
English
Article Type
Article
Citation

INTERNATIONAL JOURNAL OF MACHINE TOOLS MANUFACTURE, v.31, no.1, pp.45 - 54

ISSN
0890-6955
URI
http://hdl.handle.net/10203/66817
Appears in Collection
ME-Journal Papers(저널논문)
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