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US 7,518,329 B2Granted
Method and device for cutting freeform surfaces by milling
AssigneeMTU Aero Engines AG
InventorArndt Glaesser
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AssigneeMTU Aero Engines AG
InventorArndt Glaesser
Estimating the term…
A method and a device for cutting freeform surfaces is disclosed. In 5-axis cutting, a workpiece is milled by a tool, i.e., a milling cutter, in such a way that a desired freeform surface is obtained. The tool is moved for cutting along at least one tool path, i.e., cutting path, defined on the basis of interpolation points in relation to the workpiece. According to this invention, a tool vector in the form of leading angles and setting angles is defined for each interpolation point on the tool path. For each interpolation point a normal vector is determined from the leading angles and the setting angles and also from a drive vector determined for each interpolation point. The normal vector in each interpolation point on the tool path is used for a 3D-radius correction for equalizing/compensating for deviations in dimensions of the milling cutter.
A method for cutting freeform surfaces on workpieces by milling, in particular for 5-axis cutting, whereby a workpiece is cut by a tool such that a desired freeform surface is obtained and whereby the tool for cutting is moved along at least one tool path that is defined on a basis of interpolation points in relation to the workpiece, comprising the steps of:
A device for cutting freeform surfaces on workpieces, in particular a 5-axis cutting device, whereby a tool cuts a workpiece such that a desired freeform surface is obtained, having a programming unit for programming at least one tool path through interpolation points wherein the tool for cutting is movable along the tool path or each tool path in relation to the workpiece, wherein a tool vector in a form of leading angles and setting angles is programmable in the programming unit for each interpolation point, and the programming unit is assigned means to determine a drive vector and a normal vector for each interpolation point, and wherein the normal vector of each interpolation point is supplied to a 3D-radius correction unit.
A device for cutting freeform surfaces on workpieces, comprising:
A method for cutting freeform surfaces on workpieces by milling, comprising the steps of:
Dependencies are inferred from the claim text.