Experimental Investigation of Milling Process Parameters on Cutting Tool Life

Abstract

The aim of this study is to investigate the effect of the main factor in milling operation
which is in order affect cutting tool life with (8 mm) diameter of high speed steel with four flat end
milling via computer numerical controlled milling machine with using aluminum alloy (AL-2024) as
a work piece.
In this research different cutting speed = 18.84, 25.12, 31.4 and 37.68 [m/min], different feed rate (10,
15, 20, 25, and 30) mm/rev and constant cutting depth of (1mm) have been used. The cutting process
has been done in two stages the first one the cutting process in the up direction of cutting, which is
done with using cooling fluid and without using cooling fluid (dry cut). In the second stage the cutting
process has been in down direction of cutting, and also done by using cooling fluid and without using
cutting fluid (dry cut). Using down cut milling is the best operation case As shown by the obtained
results from the experiments, which gives longer tool life, using cutting conditions for cutter (feed rate
= 15 mm/rev), (depth of cut = 1 mm) and (machine speed= 1500 rpm) provide better tool life (T)
which has been (55min).