An adaptive system for turning process control based on tool temperature feedback

Abstract A computer-based adaptive system for the closed-loop control of the cutting temperature is modelled and designed for application to a lathe turning process. The cutting temperature is estimated through e.m.f. measurements obtained by using a standard thermocouple embedded in the tool holder. The control objective is to maximise the metal removal rate subject to constraints on tool decay related to temperature-dependent wear mechanisms. A real-time monitoring and control strategy is implemented aiming at compensating for process dynamics variations according to a self-tuning regulator scheme.

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