Numerical control apparatus and CAM system
AssigneeToshiba Kikai Kabushiki Kaisha
InventorsIchiro Matsumoto, Jun Fujita
Life of this patent
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Abstract
Upon analyzing a processing program (5) in an analyzer (11, 31), 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, 38). 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.
Claims6
A numerical control apparatus for controlling a machine tool used to process a formed surface, comprising:
- main spindle revolution control means for controlling a main spindle in revolution based on contact position information about a contact position between a tool and a workpiece instructed by a processing program, wherein said main spindle revolution control means includes:
- an analyzer for obtaining the contact position information instructed by the processing program;
- and
- a main spindle revolution calculator responsive to said contact position information for calculating revolution of the main spindle corresponding to the contact position between the tool and the workpiece.
A numerical control apparatus for controlling a machine tool used to process a formed surface, comprising:
- feeding speed determining means for determining a feeding speed on the basis of a moving form of a tool axis instructed by a processing program;
- and main spindle revolution control means for controlling a main spindle in revolution on the basis of said feeding speed and contact position information about a contact position between a tool and a workpiece instructed by said processing program, wherein said main spindle revolution control means includes:
- an analyzer for obtaining the contact position information instructed by the processing program;
- and
- a main spindle revolution calculator responsive to said contact position information for calculating revolution of the main spindle corresponding to the contact position between the tool and the workpiece.
Dependencies are inferred from the claim text.