$8$ marks$)$

$($rpm$)$

$e{m}_2$

rotates turning a $30$ cm long, $200$ mm diameter $304$ stainless steel rod to a diameter of $198$ mm $.$ The spindle

$[10$ marks$]$

stain$/$ess $400$ rpm and the tool is travelling at an axial speed of $200m\frac{m}{m}in.$ The cutting energy of $30475\%.$

a$)$ Calculate the cutting time.

b$)$ Calculate the power required for cutting at these conditions. Will this machine be able to perform the Cut under these conditions?

c$)$ If we keep the same spindle speed and use only $70\%$ of the power of the motor for cutting, what should the axial speed of the tool be$?$

d$)$ What will be the cutting time if we use the axial speed of $($c$)?$