Methods and systems for chip breaking in turning applications using CNC toolpaths
AssigneesThe University of North Carolina at Charlotte, Babcock & Wilcox Technical Services Y-12, LLC
InventorsBethany A. Woody, Kevin Scott Smith, David J. Adams, William E. Barkman, Edwin F. Babelay, Jr.
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Abstract
The present invention provides methods and systems for chip breaking, controlling cutting tool wear, and the like in turning, boring, and other applications, including: engaging a workpiece with a cutting tool in a feed direction along a toolpath, superimposing an oscillation in the feed direction on the toolpath, and dynamically or non-dynamically varying the oscillation superimposed in the feed direction on the toolpath such that interrupted cuts and chips of a predetermined length or less are produced. These systems take full advantage of computer numerical control (CNC) methodologies.
Claims22
A computer numerical control-based method for chip breaking and the like in turning, boring, and other applications, comprising:
- engaging a workpiece with a cutting tool in a feed direction along a toolpath;
- and
- superimposing an oscillation in the feed direction on the toolpath such that one or more interrupted cuts and one or more chips are produced;
- wherein the oscillation is determined based on at least chip length, workpiece surface finish, and machine dynamic capability;
- and
- wherein a phase shift of the oscillation is varied between at least two successive rotations of the workpiece.
A computer numerical control-based system for chip breaking and the like in turning, boring, and other applications, comprising:
- a cutting tool for engaging a workpiece in a feed direction along a toolpath;
- and
- a controller for superimposing an oscillation in the feed direction on the toolpath such that one or more interrupted cuts and one or more chips are produced;
- wherein the oscillation is determined based on at least chip length, workpiece surface finish, and machine dynamic capability;
- and
- wherein a phase shift of the oscillation is varied between at least two successive rotations of the workpiece.
A computer numerical control-based method for chip breaking and the like in turning, boring, and other applications, comprising:
- engaging a workpiece with a cutting tool in a feed direction along a first toolpath segment;
- and
- engaging the workpiece with the cutting tool in the feed direction along a second toolpath segment;
- wherein an interaction of the first toolpath segment and the second toolpath segment results in one or more interrupted cuts and one or more chips being produced;
- wherein the first toolpath segment and the second toolpath segment are determined based on at least chip length, workpiece surface finish, and machine dynamic capability;
- and
- wherein a phase shift of the second toolpath segment is varied relative to a phase shift of the first toolpath segment.
Dependencies are inferred from the claim text.