Machine tool, machine tool control method, and non-transitory computer-readable medium comprising machine tool control program

A machine tool that can machine a workpiece, the machine tool comprising:

• a storage tank that stores coolant;
• a discharge unit that discharges the coolant stored in the storage tank toward chips resulting from the machining of the workpiece;
• a filter that removes the chips from the coolant having been discharged toward the chips;
• a collecting pump that brings the coolant having passed through the filter back to the storage tank;
• a first obtaining unit that obtains a first index value indicating an amount of the coolant discharged from the discharge unit per predetermined time;
• a second obtaining unit that obtains a second index value indicating an amount of the coolant that passes through the filter and is brought back to the storage tank per the predetermined time;
• and
• a notifying unit that notifies of an abnormality in the filter when a result of comparison of the first index value with the second index value satisfies a predetermined abnormality condition.