Control device and control method for machine tool
AssigneeFanuc Corporation
InventorNobuhito OONISHI
Life of this patent
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Abstract
An oscillation component a×sin(Mωt) (M is the number of sides) that becomes the maximum when a tool cuts the center of a machining surface is superimposed on a reference angular velocity 2ω of the tool. The angular velocity of a tool shaft becomes higher as the tool shaft comes close to the center of the machining surface and becomes the maximum when the tool shaft is at the center of the machining surface. It is possible to adjust the flatness of the machining surface by adjusting an adjustment parameter a of the oscillation component a×sin(Mωt).
Claims7
A control device that controls polygon turning to form a polygon on a workpiece surface by rotating a tool and a workpiece simultaneously, the control device comprising:
- a workpiece command generation unit that generates a command of an angular velocity of the workpiece;
- and
- a tool command generation unit that generates a command of an angular velocity of the tool,
- wherein the angular velocity of the tool relative to the angular velocity of the workpiece is increased or decreased so that a shape of a machining surface is adjusted by adjustment of both or one of the angular velocity of the workpiece and the angular velocity of the tool.
A control method of controlling polygon turning to form a polygon on a surface of a workpiece by rotating the workpiece and a tool simultaneously, the control method comprising:
- adjusting both or one of an angular velocity of the workpiece and an angular velocity of the tool so as to increase or decrease the angular velocity of the tool relative to the angular velocity of the workpiece;
- generating a command of the angular velocity of the workpiece;
- and
- generating a command of the angular velocity of the tool.
Dependencies are inferred from the claim text.