NC program generating method, NC apparatus, computer memory product, and computer program product
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United States of America Patent
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Sep 13, 2005
Grant Date -
Sep 11, 2003
app pub date -
Aug 30, 2002
filing date -
Mar 11, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An NC apparatus 1 replaces a required machining shape of a workpiece 5 with a predetermined canned machining cycle depending on a specification of machining conditions including a machining start point, a machining end point, and the size of an end mill E to be used. Calculation of an estimated value of cutting force exerted on the end mill E fed along the assumed tool path during the replaced canned machining cycle is repeated until a predetermined comparison and evaluation result is obtained in comparison with a predetermined appropriate value. Accordingly, the tool path of the end mill E together with the feed rate in each portion of the tool path is determined. This permits generation of an NC program which is used in a NC machine equipped with an end mill serve as a cutting tool, and which optimizes the tool path of the end mill together with the feed rate in each portion of the tool path such as to achieve high machining efficiency and accuracy.
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