Control device and control method for machine tool
AssigneeFanuc Corporation
InventorNobuhito OONISHI
Life of this patent
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Abstract
Oscillation for a direct distance between the centers of a tool T and a workpiece W to meet l+a×l×(1−cos(Mωt)) and vertical oscillation to meet a×l×sin(Mωt) are applied alone or in combination with time t, where ω denotes an angular velocity of a workpiece, M denotes the number of sides of a polygon, and a denotes an adjustment parameter. Such oscillation enables adjustment as to how the machining surface is made concave or convex.
Claims7
A control device that controls polygon turning to form a polygon on a surface of a workpiece by rotating the workpiece and a tool 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 a relative distance between the workpiece and the tool is increased or decreased so that a shape of a machining surface is adjusted.
A control method for 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:
- generating a command for an angular velocity of the workpiece;
- generating a command for an angular velocity of the tool;
- generating an oscillation component for oscillating a relative position between the workpiece and the tool;
- and
- performing control to rotate the workpiece and the tool at the generated angular velocity and oscillate the relative position between the workpiece and the tool.
Dependencies are inferred from the claim text.