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US 7,340,321 B2Granted
Method and device for milling freeform surfaces
AssigneeMTU Aero Engines AG
InventorArndt Glaesser
Life of this patent
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Abstract
In a method and a device for cutting freeform surfaces, a workpiece is cut by a tool or a cutter to produce a desired freeform surface. For the purpose of cutting, the tool is moved along at least one defined tool path or cutting path relative to the workpiece. In addition to the, or each tool path, at least one guide curve is defined for a tool vector of the tool, the tool vector being oriented as a function of the, or each guide curve 12 during the cutting.
Claims13
A method, comprising:
- cutting freeform surfaces on a workpiece a tool to produce a desired freeform surface, including:
- moving the tool cutter along at least one of (a) at least one defined tool path and (b) at least one defined cutting path relative to the workpiece;
- defining a first guide curve for a tool vector of the tool, the tool vector oriented as a function of each guide curve during cutting;
- defining a second guide curve for the tool vector of the tool, the first guide curve and the second guide curve defined such that the workpiece is machinable in a collision-free manner;
- determining a guide surface in accordance with the first guide curve and the second guide curve;
- ascertaining a third guide curve arranged on the guide surface as a function of a ratio of a current cutting path to a total number of cutting paths;
- and
- guiding the tool vector by the guide curve.
5 more elements
A device for cutting freeform surfaces on a workpiece, comprising:
- a tool adapted to cut the workpiece to produce a desired freeform surface;
- a first programming device adapted to program at least one tool path, the tool movable along the tool path relative to the workpiece, the first programming device includes a device adapted to program a first guide curve for a tool vector of the tool, the tool vector controllable as a function of the first guide curve during cutting;
- and
- a second programming device adapted to program a second guide curve for the tool vector of the tool, the tool adapted to machine the workpiece on the guide curves in a collision-free manner, the first guide curve and the second guide curve defining a guide surface, the tool movable on a third guide curve arranged on the guide surface, the tool guided as a function of a ratio of a current cutting path to a total number of cutting paths.
1 more element
Dependencies are inferred from the claim text.