A20 mm deep slot is being milled in a block of aluminum with k 850 n/mm2. the tool is 25 mm in diameter, and has 2 teeth. it is rotating at 14,728 rpm, and the chip load (feed per tooth) is 0.1 mm. how much power is consumed in kw?

A8-in.-diameter steel shaft is to have a press fit with a 16-in-diameter cast iron hub. both the hub and the shaft are 10 in long. using maximum normal stress theorem and appropriate safety factor, it was identified that the maximum allowable circumferential (a.k.a. hoop or tangential) stress in the hub is to be 7.5 ksi. the moduli of elasticity are 30 x 106 psi for steel and 15 x 106 psi for cast iron. the poisson's ratio for both steel and cast ron is 0.3 and coefficient friction for the two materials is 0.12. determine a. the interference or the original mismatch, 8 b. the maximum axial force required to press the hub on the shaft