Chapter 48, Problem 1A

To determine

The cutting speed of given workpiece.

Answer to Problem 1A

The cutting speed of given workpiece is 69fpm.

Explanation of Solution

Given information:

  $\begin{array}{l}\text{D}=0.750\text{inch}\\ \text{N}\text{=}\text{350}\\ \text{C}\text{=}\frac{3.1416\text{DN}}{12}\end{array}$

Calculation:

According to the formula given,

We have,

  $\text{C}\text{=}\frac{3.1416\text{DN}}{12}$

  $\begin{array}{l}\text{C}\text{=}\frac{3.1416\left(0.750\text{inch}\right)\left(350\right)}{12}\\ \text{C}\text{=}\frac{824}{12}\text{fpm}\text{=}\text{68}\text{.7225}\text{fpm}\\ \text{C}\text{=}69\text{fpm}\end{array}$

The cutting speed of given workpiece is 69fpm.