Question

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

The uncut chip thickness is

• A. 0.0906
• B. 0.042
• C. 0.214
• D. 0.1

Answer 1

The correct option is A 0.0906

5 - 5 - 8 - 8 - 8 - 25 - 0.1 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

$t_1=fsin\lambda$

$=0.1sin{65}^{\circ }=0.0906mm$