Machining Status Display Apparatus

A computer program product, comprising:

• a computer program for causing a computer to function as:
• a stability lobe picture creator obtaining, based on specifications of a tool to be used, first correlation data relating to a correlation between a spindle rotation speed and a limit depth of cut of the tool above which regenerative chatter occurs, and creating display picture data for displaying a stability lobe as a correlation diagram between the spindle rotation speed and the limit depth of cut based on the obtained first correction data;
• a first machining information picture creator obtaining machining related information other than the regenerative chatter corresponding to set machining conditions, and creating display picture data for displaying the obtained machining related information;
• and
• a display controller displaying the stability lobe and the machining related information with the stability lobe and the machining related information superimposed one on another on the display screen of the display device based on the display picture data created by the stability lobe picture creator and the display picture data created by the first machining information picture creator.