Question

An orthogonal turning process is carried out with the following process parameters:
Uncut chip thickness = 0.15 mm
Chip thickness = 0.225 mm
Cutting speed= 120 m/min
Rake angle =10${}^{\circ }$
Width of cut = 6 mm
Thrust force = 230 N
Cutting force = 550 N
The energy required for performing the cutting process is

• A. 1.1 kW
• B. 66 kW
• C. 0.46 kW
• D. 27 kW

Answer 1

The correct option is A 1.1 kW

$E=W=F_c\times V_c$
$=550\times 120\text{m/min}$
$=550\times 120$
$=550N\times \frac{120}{60}=1100\text{J/sec}$
$=1.1\text{kW}$