Bifurcation scenarios in the hardware-in-the-loop experiments of highly interrupted milling processes

Abstract

AbstractHardware-in-the-loop (HIL) measurements of highly interrupted milling processes were conducted. A real spindle was used with a dummy tool on which the cutting forces were emulated with contactless sensors and actuators. During the experiments, Hopf- and period-doubling bifurcations were identified. The nonlinear dynamics of these period-doubling bifurcations are analyzed for a discrete model of highly interrupted milling. This investigation found the bifurcation to be subcritical, which draws the attention to the limited practical validity of linear stability analysis.