Slab milling is performed on the top surface of a rectangularworkpiece that is 12.0 in long by 2.5 in wide by 4.0 in thick. Thehelical milling cutter, which has a 3.0-in diameter and eight teethoverhangs the width of the part on both sides. Cutting speed = 125ft/min, feed = 0.006 in/tooth, and depth of cut = 0.300 in.Determine (a) machining time, in min, and
(b) maximum metal removal rate during the cut.
in in3/min
(c) If an additional approach distance of 0.5 in is provided atthe beginning of the pass (before cutting begins), and anovertravel distance is provided at the end of the pass equal to thecutter radius plus 0.5 in, what is the duration of the feedmotion.
Enter your answer
min
