Processing system having function for maintaining processing accuracy

A processing system, comprising:

• a machine tool;
• a robot which has a movable section configured to supply or eject a workpiece to or from the machine tool and to be moved away from a processing area of the machine tool while the workpiece is processed by the machine tool;
• a capturing device which is arranged on the movable section of the robot and captures a tool of the machine tool;
• an image processing part which compares a reference image of the tool captured by the capturing device to an image of the tool captured by the capturing device at each time when a predetermined number of processing operations are finished, and detects an amount of abrasion of the tool;
• a correcting part which corrects a tool position in a processing program of the machine tool based on the amount of abrasion;
• and
• an outputting part which calculates a number of remaining possible processing operations until the amount of abrasion reaches a predetermined limit amount of abrasion of the tool, based on an amount of tool abrasion per one processing operation, and externally outputs the calculated number of remaining possible processing operations.