Machinery parameter optimization of CNC milling programming towards process time

Abstract

The Tooling Department is a department engaged in manufacturing die, namely the manufacture of printing equipment to make components/pressed part made according to the desired design and processed on a pressing machine, die ordered from the customer, namely sole agent brand (ATPM). The manufacturing process has been running well so far, but to improve service and to reduce manufacturing die costs, it is necessary to improve time efficiency by optimizing machining parameters. The purpose of this study is to determine the machining parameters that produce optimal processing time in CNC milling programming. This study uses the Taguchi Method with the Orthogonal Array L9 pattern. Factors to be examined include cutting speed, feed rate, depth of cut and machining tolerance using a cutter ball nose Ø32 mm and Ø30 mm. Parameters that produce optimal machining process time in CNC milling programming for cutter ball nose Ø32 mm are at optimum cutting speed = 100480 mm/min, optimal feed rate conditions = 1200 mm/min, optimal depth of cut = 1.5 mm, and conditions machining tolerance = 0.09 mm. The machining process time produced under these conditions is 265.73 minutes. Whereas for cutter ball nose Ø30 mm is at optimum cutting speed = 103620 mm/min, optimal feed rate condition = 1280 mm/min, optimal depth of cut = 1.5 mm, and machining tolerance = 0.09 mm. The machining process time produced under these conditions is 265.51 minutes.