1. At a speed of 90 fpm, feed of 0.030 ipr, and depth at 0.625, calculate the input parameters for a lathe if the diameter to be machined (bored) is 6 in. Find the rpm (Ns) to run the spindle to generate the cutting speed.
2. Calculate the cutting time for a 4-in. length of cut, given that the feed rate is 0.030 ipr at a speed of 90 fpm.
3. For a boring operation at V ¼ 90 sf pm, fr = 0.030 I pr, and d = 0.625 in., calculate the MMR.
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