Title: Automatic tool touch and breakage detection in turning

Authors: S.R. Hayashi, C.E. Thomas, R.K. Davis, W.S. McKnight, C.R. Roberts

Addresses: Corporate Research and Development, General Electric Company, Schenectady, New York, USA. ' Corporate Research and Development, General Electric Company, Schenectady, New York, USA. ' Corporate Research and Development, General Electric Company, Schenectady, New York, USA. ' Corporate Research and Development, General Electric Company, Schenectady, New York, USA. ' Corporate Research and Development, General Electric Company, Schenectady, New York, USA

Abstract: The Machine Tool Monitor (MTM) described in this paper is a tool breakage detection and a tool and part probing system for use on lathes. It uses a single accelerometer, mounted on the turret structure, as the sensing element. The system processes the sensor signals, and is programmed to recognize signal patterns resulting from the breakage of the tool, and the touch of the tool to the rotating workpiece or to a vibrating reference post. The system is integrated with the lathe|s NC control to allow automatic reaction to the sensed events.

Keywords: closed-loop machining; machine tools; machining automation; numerical control; sensors; tool breakage; touch trigger probe; vibration; NC turning; machine tool monitoring; breakage detection.

DOI: 10.1504/IJMPT.1986.036758

International Journal of Materials and Product Technology, 1986 Vol.1 No.1, pp.115 - 129

Published online: 07 Nov 2010 *

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