Title :
Dynamic speed adjustment of a machine tool
Author :
Lamond, Bernard F.
Author_Institution :
Oper. & Decision Syst. Dept., Univ. Laval, Quebec City, QC, Canada
Abstract :
We present analytical results related to a tool management model for a flexible machine equipped with a tool magazine, variable cutting speed, and sensors to monitor tool wear, when tool life due to flank wear is stochastic. Under some regularity conditions, we derive the special structure of decision rules for adjusting the cutting speed as a function of remaining distance, each time a tool change occurs, in order to minimize the expected processing time (sum of cutting time and tool setup time). These are near-optimal and easy to compute.
Keywords :
cutting; cutting tools; machine tools; wear; decision rules; dynamic speed adjustment; flank wear; flexible machine; machine tool; sensors; tool life; tool magazine; tool management model; tool wear monitoring; variable cutting speed; Condition monitoring; Cutting tools; Flexible manufacturing systems; Machine tools; Manufacturing automation; Materials handling; Optimal control; Random variables; Stochastic processes; Wearable sensors; Gamma distributions; Manufacturing automation; Reliability modeling; Stochastic optimal control;
Conference_Titel :
Intelligent Systems (IS), 2010 5th IEEE International Conference
Conference_Location :
London
Print_ISBN :
978-1-4244-5163-0
Electronic_ISBN :
978-1-4244-5164-7
DOI :
10.1109/IS.2010.5548386
