Machine tool, method for controlling machine tool, and computer-readable storage medium storing program for controlling machine tool

A method for controlling a machine tool, the method comprising:

• rotating a spindle configured to drive to rotate a workpiece or a tool;
• detecting a vibration frequency of the spindle or the tool;
• detecting a chatter vibration in the spindle or the tool based on the vibration frequency;
• based on a frequency of the chatter vibration, a rotation speed of the spindle, and a number of cutting edges of the tool, calculating an order corresponding to a number of vibrations of the tool during a period of time until a current rotation angle of a first cutting edge of the tool reaches a current rotation angle of a second cutting edge of the tool;
• presenting order information on a display of the machine tool, the order information indicating a magnitude of the calculated order;
• and
• presenting, on the display, a plurality of order segments respectively representing different ranges of orders,
• wherein when presenting the order information on the display, an order segment to which the calculated order belongs among the plurality of order segments is presented in such a presentation manner that the order segment to which the calculated order belongs is distinguishable from other order segments.

A computer-readable storage medium storing a program for controlling a machine tool, the program causing the machine tool to perform:

• rotating a spindle configured to drive to rotate a workpiece or a tool;
• detecting a vibration frequency of the spindle or the tool;
• detecting a chatter vibration in the spindle or the tool based on the vibration frequency;
• based on a frequency of the chatter vibration, a rotation speed of the spindle, and a number of cutting edges of the tool, calculating an order corresponding to a number of vibrations of the tool during a period of time until a current rotation angle of a first cutting edge of the tool reaches a current rotation angle of a second cutting edge of the tool;
• presenting order information on a display of the machine tool, the order information indicating a magnitude of the calculated order;
• and
• presenting, on the display, a plurality of order segments respectively representing different ranges of orders,
• wherein when presenting the order information on the display, an order segment to which the calculated order belongs among the plurality of order segments is presented in such a presentation manner that the order segment to which the calculated order belongs is distinguishable from other order segments.