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US 2014/0379115 A1Published application
Numerical controller of machine tool for drilling
AssigneeFanuc Corporation
InventorYousuke KOYANAKA
Life of this patent
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Abstract
A numerical controller of a machine tool changes a feed speed of a feed shaft and a spindle rotation speed, in accordance with a current position of a rotary tool in a specified arbitrary area above and below a position where a workpiece and the rotary tool come in contact with each other.
Claims5
A numerical controller that includes a feed shaft configured to move a rotary tool and a spindle configured to rotatably drive the rotary tool to perform drilling work for forming a hole in a workpiece using the rotary tool, the numerical controller comprising:
- specified arbitrary area setting unit configured to set a specified arbitrary area including a contact position where the workpiece and the rotary tool come in contact with each other for the first time, above and below the contact position in the machining direction of the rotary tool;
- updating unit configured to update a current position of the feed shaft configured to move the rotary tool;
- and
- speed changing unit configured to change a feed speed of the feed shaft and a spindle rotation speed of the spindle in accordance with the current position of the rotary tool when the current position of the rotary tool is in the specified arbitrary area.
1 more element
Dependencies are inferred from the claim text.