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US 10,884,390 B2Granted
Optimized control of a metal-cutting machine tool
AssigneeSiemens Aktiengesellschaft
InventorsJochen Bretschneider, Thomas Pitz
Life of this patent
Estimating the term…
Abstract
Milling errors are to be prevented by repairing in particular NC parts programs by evaluating spatial information for smoothing a cutting or milling path section instead of evaluating only information along an individual cutting or milling path section. Relationships between adjacent cutting or milling path sections are thus taken into consideration in a smoothing process.
Claims8
A method for controlling a metal-cutting machine tool with a parts program integrated on a Computer Aided Design/Computer Aided Manufacturing/Post Processor (CAD/CAM/PP) system, comprising:
- describing with the parts program a path composed of a plurality of adjacent cutting path sections representing a 3D contour;
- with each cutting path section comprising a series of path elements composed of support points and line elements connecting respective pairs of the support points;
- defining a tolerance value;
- analyzing at least a part of one of the cutting path sections in the parts program as to whether the defined tolerance value is satisfied in relation to a plurality of path elements of a plurality of neighboring cutting path sections adjacent to the one of the cutting path sections being analyzed;
- separately examining a plurality or each of the support points in the parts program of the first one of the cutting path sections being analyzed by taking into account all neighboring support points located in a predefined spatial region around the support point to be examined, wherein the predefined spatial region is a sphere having a center point located at the support point to be examined;
- optimizing a course of the path in the parts program by modifying, adding to or removing from the first one of the cutting path sections being analyzed at least one path element so that the defined tolerance value is satisfied;
- and
- controlling the metal-cutting machine in accordance with the optimized course of the path in the parts program in real-time operation during a workpiece processing.
5 more elements
A control facility for controlling a metal-cutting machine tool, comprising:
- a storage device storing a parts program integrated on a Computer Aided Design/Computer Aided Manufacturing/Post Processor (CAD/CAM/PP) system for controlling the metal-cutting machine tool,
- wherein the parts program describes a path composed of a plurality of adjacent cutting path sections representing a 3D contour;
- with each cutting path section comprising a series of path elements composed of support points and line elements connecting respective pairs of the support points,
- a computing device configured to:
- optimize a course of the path of the parts program by analyzing at least a part of one of the of the cutting path sections as to whether a defined tolerance value is satisfied in relation to a plurality of path elements of a plurality of neighboring cutting path section adjacent to the one of the cutting path sections being analyzed,
- separately examine a plurality or each of the support points in the parts program of the one of the cutting path sections being analyzed by taking into account all neighboring support points located in a predefined spatial region around the support point to be examined, wherein the predefined spatial region is a sphere having a center point located at the support point to be examined, and
- optimize a course of the path in the parts program by modifying, adding to or removing from the one of the cutting path sections being analyzed at least one path element so that the defined tolerance value is satisfied, and an activation device configured to control the metal-cutting machine tool in accordance with the optimized course of the path in the parts program in real-time operation.
4 more elements
Dependencies are inferred from the claim text.