Method for adaptive feed rate regulation on numerically controlled machine tools
AssigneeDr. Johannes Heidenhain GmbH
InventorHermann Fraunhofer
Life of this patent
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Abstract
In a method for the adaptive feed rate regulation on a numerically controlled machine tool, which is used for the metal-removing processing of workpieces using a tool rotating on a spindle according to the specification of an NC program, the input power of the spindle is held as constant as possible by the influence of a tool feed rate established in the NC program for the motion between the tool and the workpiece. The method for the adaptive feed rate regulation is activated by a command of the NC program that initiates the processing of the workpiece, and is deactivated by a command of the NC program that terminates the processing of the workpiece.
Claims17
A method for adaptive feed rate regulation in a numerically controlled machine tool for metal-removing processing of a workpiece, comprising:
- rotating a tool on a spindle according to an NC program;
- holding substantially constant an input power of the spindle by influencing a tool feed rate established in the NC program for motion between the tool and the workpiece;
- activating the adaptive feed rate regulation by a command of the NC program that initiates processing of the workpiece and that starts a spindle rotation;
- and
- deactivating the adaptive feed rate regulation by a command of the NC program that terminates the processing of the workpiece.
A method for adaptive feed rate regulation in a numerically controlled machine tool for metal-removing processing of a workpiece, comprising:
- rotating a tool on a spindle according to an NC program;
- holding substantially constant an input power of the spindle by influencing a tool feed rate established in the NC program for motion between the tool and the workpiece;
- activating the adaptive feed rate regulation by a command of the NC program that initiates processing of the workpiece;
- deactivating the adaptive feed rate regulation by a command of the NC program that terminates the processing of the workpiece;
- operating the adaptive feed rate regulation in a learning mode if a current NC program is being executed for a first time, the learning mode including writing parameters that are required for the adaptive feed rate regulation into a parameter file corresponding to the NC program;
- and
- subdividing the NC program into individual cuts using spindle start commands and spindle stop commands, the parameters written into the parameter file including a maximum attained spindle power for each cut.
A method for adaptive feed rate regulation in a numerically controlled machine tool for metal-removing processing of a workpiece, comprising:
- rotating a tool on a spindle according to an NC program;
- holding substantially constant an input power of the spindle by influencing a tool feed rate established in the NC program for motion between the tool and the workpiece;
- activating the adaptive feed rate regulation by a command of the NC program that initiates processing of the workpiece;
- deactivating the adaptive feed rate regulation by a command of the NC program that terminates the processing of the workpiece;
- and
- checking, for each tool called up in the NC program, in a tool table whether an adaptive feed rate regulation is provided for the tool, the adaptive feed rate regulation being activated in the activating step only if an adaptive feed rate regulation is provided for the tool in the tool table.
Dependencies are inferred from the claim text.