List of top Materials, Manufacturing & Industrial Engineering Questions on Machining and Machine Tool Operations

During orthogonal turning using a single point cutting tool, the feed rate is \(0.24\) mm/rev. The uncut chip thickness is \(0.23\) mm. The shear angle, tangential force component, and radial force component are \(20^{\circ}\), \(800\) N, and \(150\) N, respectively. The value of the shear force is ________ N (rounded off to 2 decimal places).

A drill bit during its lifetime can produce \(150\) through holes in a plate at a drill speed of \(200\) RPM. If the drill speed increases to \(300\) RPM, it can produce \(60\) through holes in the same plate before the drill bit fails. Assuming all other parameters remain constant, the value of the exponent in Taylor's tool life equation is ________ (rounded off to 2 decimal places).