Computerized system and method for generating an undesirable chatter free milling CNC program for use in machining a workpiece

A computerized system for machining a workpiece, said system comprising:

• an historic mapping generator operative, prior to machining said workpiece, to generate an historical mapping, based on empirical data obtained from machining activity at an earlier time, indicating:
• pairings of depth of cut and rpm at which undesirable chatter (UDC) did not occur during machining activity at an earlier time using at least one given type of milling machine, at least one given type of cutting tool and at least one given type of workpiece material;
• and
• pairings of depth of cut and rpm at which undesirable chatter (UDC) did occur during machining activity at an earlier time using said at least one given type of milling machine, said at least one given type of cutting tool and said at least one given type of workpiece material;
• and
• a computerized machine tool programmer operative, prior to commencing machining of said workpiece, to generate a machine tool program enabling a machine tool to machine said workpiece using one of said at least one given type of milling machine, one of said at least one given type of cutting tool and one of said at least one given type of workpiece material at at least one depth of cut and rpm, which, based on said historical mapping, avoid undesirable chatter, said computerized machine tool programmer comprising a suitable depth of cut and rpm ascertainer, said ascertainer operative to ascertain a suitable rpm for a given depth of cut which will not create UDC by:
• employing a first plurality of known pairings of depth of cut and rpm, which are known from said historical mapping for said given type of milling machine, said given type of cutting tool and said given type of workpiece material not to create UDC;
• and
• employing a second plurality of known pairings of depth of cut and rpm, which are known from said historical mapping for said given type of milling machine, said given type of cutting tool and said given type of workpiece material to create UDC;
• and
• a machine tool operable in accordance with said programming to machine said workpiece.