Question

Turning is done using a tool of $5-5-8-8-8-25-0.1\text{mm}$, geometry, with a feed of 0.1 mm/stroke and depth of cut of 2 mm.

The uncut chip thickness is

• A. 0.091
• B. 0.042
• C. 0.214
• D. 0.1

Answer 1

The correct option is A 0.091

$5-5-8-8-8-25-0.1\text{mm}$
$\downarrow$
$C_s={25}^{\circ }$
$\lambda ={90}^{\circ }-{25}^{\circ }$
$\lambda ={65}^{\circ }$

f = 0.1 mm/stroke
Depth of cut = d = 2 mm

For turning operation
$t_1=f\sin \lambda$
$=0.1\sin {65}^{\circ }=0.0906\text{mm}$