Numerical control device, machine learning device, and numerical control method

A numerical control method for outputting, to a drive shaft controller that provides feedback control on a motor connected to a drive shaft provided on at least one of a tool or a workpiece, a vibration cutting command to machine the workpiece while causing the tool and the workpiece to move relative to each other, the feedback control being provided using a detector for detecting location information of the motor, the numerical control method comprising:

• a first waveform dividing of dividing a waveform of a commanded oscillatory movement quantity specified by the vibration cutting command, into sections each corresponding to a unit time;
• a second waveform dividing of dividing a waveform of an actual position detected by the detector into sections each corresponding to the unit time;
• and
• a display control of displaying, on a display, an n-th commanded oscillation waveform, an (n+1)-th commanded oscillation waveform, an n-th actual position waveform, and an (n+1)-th actual position waveform being superimposed on one another along a time axis, n being a natural number, the n-th commanded oscillation waveform being an n-th waveform of the commanded oscillatory movement quantity produced by the dividing in the first waveform dividing, the (n+1)-th commanded oscillation waveform being an (n+1)-th waveform of the commanded oscillatory movement quantity produced by the dividing in the first waveform dividing, the n-th actual position waveform being an n-th waveform of the actual position produced by the dividing in the second waveform dividing, the (n+1)-th actual position waveform being an (n+1)-th waveform of the actual position produced by the dividing in the second waveform dividing.

A numerical control device including a control computer that outputs, to a drive shaft controller that provides feedback control on motors connected to a drive shaft provided on a tool and to a spindle provided on a workpiece, a vibration cutting command to machine the workpiece while causing the tool and the workpiece to move relative to each other, the feedback control being provided using a detector for detecting location information of the motors, the numerical control device comprising:

• a third waveform divider to perform a division of a waveform of a commanded oscillatory movement quantity specified by the vibration cutting command, into sections each corresponding to one rotation of the spindle;
• a fourth waveform divider to perform a division of a waveform of an actual position detected by the detector into sections each corresponding to one rotation of the spindle;
• and
• a display controller to display, on a display, an n-th commanded oscillation waveform, an (n+1)-th commanded oscillation waveform, an n-th actual position waveform, and an (n+1)-th actual position waveform being superimposed on one another with respect to a rotation angle during one rotation of the spindle, n being a natural number, the n-th commanded oscillation waveform being an n-th waveform of the commanded oscillatory movement quantity produced by the division performed by the third waveform divider, the (n+1)-th commanded oscillation waveform being an (n+1)-th waveform of the commanded oscillatory movement quantity produced by the division performed by the third waveform divider, the n-th actual position waveform being an n-th waveform of the actual position produced by the division performed by the fourth waveform divider, the (n+1)-th actual position waveform being an (n+1)-th waveform of the actual position produced by the division performed by the fourth waveform divider.

A numerical control method for outputting, to a drive shaft controller that provides feedback control on motors connected to a drive shaft provided on a tool and to a spindle provided on a workpiece, a vibration cutting command to machine the workpiece while causing the tool and the workpiece to move relative to each other, the feedback control being provided using a detector for detecting location information of the motors, the numerical control method comprising:

• a third waveform dividing of dividing a waveform of a commanded oscillatory movement quantity specified by the vibration cutting command, into sections each corresponding to one rotation of the spindle;
• a fourth waveform dividing of dividing a waveform of an actual position detected by the detector into sections each corresponding to one rotation of the spindle;
• and
• a display control of displaying, on a display, an n-th commanded oscillation waveform, an (n+1)-th commanded oscillation waveform, an n-th actual position waveform, and an (n+1)-th actual position waveform being superimposed on one another with respect to a rotation angle during one rotation of the spindle, n being a natural number, the n-th commanded oscillation waveform being an n-th waveform of the commanded oscillatory movement quantity produced by the dividing in the third waveform dividing, the (n+1)-th commanded oscillation waveform being an (n+1)-th waveform of the commanded oscillatory movement quantity produced by the dividing in the third waveform dividing, the n-th actual position waveform being an n-th waveform of the actual position produced by the dividing in the fourth waveform dividing, the (n+1)-th actual position waveform being an (n+1)-th waveform of the actual position produced by the dividing in the fourth waveform dividing.