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李小俚, Xiaoli Li, Han-Xiong Li, Senior Member, IEEE, Xin-Ping Guan, and R. Du
IEEE TRANSACTIONS ON SYSTEMS, MAN, AND CYBERNETICS-PART C: APPLICATIONS AND REVIEWS, VOL. 34, NO. 4, NOVEMBER 2004,-0001,():
-1年11月30日
It is very important to use a reliable and inexpensive sensor to obtain useful information about manufacturing processing, such as cutting force for monitoring automated machining. In this paper, the feed-cutting force is estimated using inexpensive current sensors installed on the ac servomotor of a computerized numerical control (CNC) turning center, with the results applied to the intelligent tool wear monitoring system. The mathematical model is used to disclose the implicit dependency of feed-cutting force on feed-motor current and feed speed. Afterwards, a neurofuzzy network is used to identify the cutting force with current measurement only. This hybrid math-fuzzy approach will reduce the modeling uncertainty and measurement cost. Finally, the estimated cutting force is applied in the tool-wear monitoring process. Successful experiments demonstrate robustness and effectiveness of the suggested method in the wide range of tool-wear monitoring applications.
Feed-cutting force, feed-motor current, fuzzy classification, monitoring, neuro-fuzzy network, tool wear.,
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【期刊论文】Analysis and compensation of workpiece errors in turning
李小俚, XIAOLI LI, R. DU
INT. J. PROD. RES., 2002, VOL. 40, NO. 7, 1647-1667,-0001,():
-1年11月30日
A new method for workpiece error analysis and compensation in turning is introduced. It is known that the workpiece error consists of two parts: machine tool error (including the geometric error and thermal-induced error) and cutting induced error. The geometric error of the machine tool is independent on machining operation and, hence, can be measured o. -line using a
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【期刊论文】Detection of Tool Flute Breakage in End Milling Using Feed-Motor Current Signatures
李小俚, Xiaoli Li
IEEE/ASME TRANSACTIONS ON MECHATRONICS, VOL. 6, NO. 4, DECEMBER 2001,-0001,():
-1年11月30日
In this paper, an effective algorithm based on improved time-domain averaging is proposed to detect tool flute breakage during end milling using feed-motor current signatures. The algorithm proposed is demonstrated to be effective in detecting tool flute breakage in real time through a series of milling experiments, and is also demonstrated to be insensitive to the effects for transients, such as cutter runout, entry/exit cuts, and noise in the feed-motor current signals. Results indicated that the approach showed excellent potential for practical, on-line application for tool flute breakage detection during end milling.
End milling, flute breakage, time-domain averaging
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