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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
A lathe performs a turning operation on a work piece of 6.0 in diameter. The shear strength of the work is. 40,000 lb/in2 and the tensile strength is 60,000 lb/in2. The rake angle of the tool is 6°. The machine is set so that cutting speed is 700 ft/min, feed 0.015 in/rev, and depth = 0.090 in. The chip thickness after the cut is 0.025 in. Determine (a) the horsepower required in the operation, (b) unit horsepower for this material under these conditions, and (c) unit horsepower as it would be listed in Table 21.2 for a to of 0.010 in. Use the orthogonal cutting model as an approximation of the turning process.
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