For the optimization of the cutting speed and feed rate in 3-axis NC-milling a computer supported procedure is presented. Input to that procedure is the NC- code off a part. The tool motions, derived from the NC-code, are grouped in subprocesses. Considering the manufacturing cost and accuracy, using developed models, which enable the calculation of the cutting force components and the tool wear, the optimum feedrate and cutting speed values along the tool path are calculated. These optimum cutting conditions are automatically implemented into the NC-code. which is properly modified. An application example of the developed procedure is presented. © 1992 CIRP.
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