The material drill combination follows the Taylor tool-life equation of VT' '' = 100 ft/min The drill is used to drill 10 holes, each in. in diameter, in a plate that is 6 X 8 in. on the surface and...

The material drill combination follows the Taylor tool-life equation of VT' '' = 100 ft/min The drill is used to drill 10 holes, each in. in diameter, in a plate that is 6 X 8 in. on the surface and in. thick. The drill cost is $4.00 per use (average tool cost), the labor cost is $9.00/hr, and the overhead cost is $6.00/ hr. The time to change the drill is 1 min. The time to move from hole to hole for the 10 holes and the time to load and unload the part is a total of 2 min. The total pretravel and over travel for each hole is 0.10 in., and the feed rate is 0.0050 in./rev. Use the maximum-production economics model and determine the following:

a. The value of Q (for one hole)

b. The cutting speed, in ft/min

c. The cutting path length for one hole (feet) and for 10 holes

(a. 0.75, b. 82.6, c. 26.2 ft and 262 ft)