Self-interrupted chatter in cylindrical grinding

Abstract eng:
As a self-excited vibration, chatter in cylindrical grinding is mainly incurred by subcritical Hopf bifurcation and is of large amplitude, which forces grinding wheel to leave workpiece and interrupts the grinding. Normally, interactive wheel-workpiece force is described by regenerative theory and fixed time delays. However, for the self-interrupted, the theory requires modification as the regeneration can be absent. Therefore, instead of using delayed differential equations (DDEs), a model with partial differential equations (PDEs) is proposed for monitoring the regeneration. Results of the PDEs illustrate a smaller amplitude of the chatter compared with the DDEs.

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