Method for setting a moving position in a machine tool

A machine tool comprising:

• a tool for machining a workpiece into a desired shape;
• rotating means for rotating the workpiece around a predetermined axis;
• moving means for moving at least one of the workpiece and the tool;
• driving means for driving the rotating means and the moving means;
• and
• a computer system for controlling the driving means;
• wherein the computer system
• divides a contour shape of the desired shape at section along the predetermined axis into a plurality of machining units, each including a plurality of inflection points including a machining unit start point and a machining unit end point;
• sets machining data including at least machining speed data for each of the machining units;
• calculates an arrival time at each of the inflection points based on the machining speed data;
• calculates a position of at least one of the workpiece and the tool at each of the inflection points;
• sets a rotation angle position of the workpiece corresponding to the arrival time as an accumulated count value for each of the machining units;
• and
• thereby outputs a command to the driving means for controlling the movement of at least one of the workpiece and the tool according to the calculated position of at least one of the workpiece and the tool and the set accumulated count value.