Patent ID: 7540697

Claim:
A computer assisted detecting and restraining system for cutting tool chatter, applied to a machine tool cutting a workpiece, comprising: a network monitor system, further comprising a network camera and an audio module, wherein the network camera monitors the machine tool and the audio module receives audio caused as the machine tool cutting the workpiece; a signal extraction system, further comprising a displacement meter and a dynamic signal extraction box, wherein the displacement meter extracts vibration displacement signals generated as a spindle of the machine tool cutting the workpiece and the dynamic signal extraction box converts the vibration displacement signals to digital signals and transfers the digitalized vibration displacement signals; a chatter detection system, receiving the digitalized vibration displacement signals, determining whether the signals are high frequency signals, if the vibration displacement signals are high frequency signals, determining whether signal points generated based thereon are located in a stable area derived using a sliding function, and, if the signal points are located outside the stable area, sending a control command; and a chatter restraint system, receiving the control command and adjusting rotation rates of the spindle of the machine tool accordingly.