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US 12,569,953 B2Granted
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.
Claims4
A control device configured to control 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 processor configured to:
- generate a command of an angular velocity of the workpiece;
- and
- generate a command of an angular velocity of the tool, wherein
- a relative distance between the workpiece and the tool is increased or decreased along a second axis line perpendicular to a first axis line connecting a center of the workpiece and a center of the tool so that a shape of a machining surface of the workpiece is adjusted, and
- the processor is configured to
- generate an oscillation component so that the relative distance is minimum when an edge of the tool passes at or adjacent to a center of a machining surface of the polygon;
- and
- provide a command for increasing or decreasing the relative distance to use the oscillation component.
6 more elements
Dependencies are inferred from the claim text.