Machine for the non-circular machining of workpieces

A machine for the non-circular machining of workpieces comprising:

• a machine frame;
• a workpiece spindle held on said machine frame for receiving a workpiece;
• a C-axis sensor for determining rotary positions of said workpiece spindle;
• a Z-slide arranged on said machine frame for displacement in a Z-direction parallel to said workpiece spindle and having a Z-axis drive;
• a Z-axis sensor for determining a position of said Z-slide;
• an X-axis drive arranged on said Z-slide for advancing a tool in an X-direction towards said workpiece;
• an X-axis sensor for determining a position of said tool;
• and
• a control device for activating said X-axis drive to produce a predetermined non-circular workpiece shape;
• said control device comprising a numerical machine control system for activating said workpiece spindle and said Z-axis drive;
• said control device further comprising a numerical X-axis control system for activating said X-axis drive independently of said numerical machine control system via successive actuating variables;
• said numerical X-axis control system calculating said successive actuating variables in successive calculation routines on the basis of (i) actual position values measured by said C-axis sensor, (ii) actual position values measured by said X-axis sensor, and (iii) stored data defining said predetermined non-circular shape;
• said numerical machine control system and said numerical X-axis control system being coordinated after a predetermined number of calculation routines.