en و موضوعات مربوط Other Related Subject پژوهشي Research <p>Along with increasingly development of CAD/CAM software and their application in various industries, minimizing of the machining time is found to be more important. In this paper, firstly the concerning subjects are discussed regarding classification of the optimization techniques. These are programming techniques, high speed machining techniques and feed rate optimization techniques. As a case study, an NC code was generated for machining of a plastic die by means of a dedicated software and the die was machined conventionally. Then the workpiece was machined using optimization techniques. Finally times taken for two approaches have been compared. The result shows machining time after optimization has been reduced considerably (64%). </p><p>  </p><strong><em>Keywords:</em> </strong> CAD/CAM, feed rate optimization, minimized machining time 83 87 http://ijiepr.iust.ac.ir/browse.php?a_code=A-10-1-81&slc_lang=en&sid=1 M. Sedighi sedighi@iust.ac.ir 18003194753284600574 18003194753284600574 Yes M. Noorani Azad 18003194753284600645 18003194753284600645 No