In-Process Tool Fracture monitoring in Face Milling Using Spindle Motor Current and Tool Fracture Index |
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| Authors: | GD Kim CN Chu |
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| Affiliation: | (1) School of Mechanical and Automotive Engineering, Catholic University of Daegu, Kyongbuk, Korea, KR;(2) School of Mechanical and Aerospace Engineering, Seoul National University, Seoul, Korea, KR |
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| Abstract: | A new algorithm for tool fracture detection using spindle motor current is suggested for face milling. A tool fracture index
(TFI) is suggested to represent the magnitude of tool fracture. Dynamic cutting force variation in the face milling process
is measured indirectly using spindle motor current. Even though the dynamic sensitivity of the spindle motor current is low,
the cutting force can be correctly represented by the spindle r.m.s current in rough face milling. In rough milling, tool
fracture is distinguished well from cutter run-out and transient cutting. The magnitude of tool fracture can be predicted
by the proposed tool fracture index using the spindle motor current. |
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| Keywords: | :Dynamic sensitivity Spindle motor r m s current Tool fracture index Transient cutting |
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