Method and apparatus for preparing data on tool moving path, and machining method and system
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United States of America Patent
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Oct 30, 2001
Grant Date -
N/A
app pub date -
Sep 28, 1998
filing date -
Mar 26, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Method of generating tool movement path data 9 includes determining a tool constraining surface (12) which is offset from a three-dimensional surface (22) to be generated, by a distance equal to a radial dimension of rotary machining tool (20), in a direction normal to the three-dimensional surface, determining tool path constraining surfaces (32) for constraining the tool according to the geometry of the three-dimensional surface, and obtaining three-dimensional curved line equations representing intersection lines (34) between the constraining surfaces (12, 32). Since desired curved surfaces may be used as the tool path constraining surfaces (32), the tool movement path can be suitably determined with high freedom depending upon the geometry of the three-dimensional surface (22) to be generated. The tool movement path data generated from three-dimensional curved line equations have a reduced volume but assure high machining accuracy, as compared with tool movement path data consisting of a multiplicity of cutter location points to which the tool is moved.
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