| 摘要 |
PURPOSE: A numerical control apparatus and CAM system is provided to reliably obtain an optimum main spindle revolution even under special relations of a tool and a workpiece, thereby alleviating wear of the tool and ensuring high-speed, high-accuracy processing. CONSTITUTION: Upon analyzing a processing program(5) in an analyzer(11), a numerical control apparatus extracts information about a contact position between a tool and a workpiece, and based on the information, it calculates a main spindle revolution instruction value in a main spindle revolution calculator(14). In a CAM system, information about the contact position between the tool and the workpiece to be supplied to the numerical control apparatus is calculated and added to the processing program. |
