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Manufacturing Engineering
Machining Processes
GATE 2007
Medium

In orthogonal turning of medium carbon steel, the specific machining energy is 2.0 J/mm³. The cutting velocity, feed and depth of cut are 120 m/min, 0.2 mm/rev and 2 mm respectively. The main cutting force in N is

  • A40
  • B80
  • C400
  • 800

Explanation

MRR=f×d×Vc=0.2×2×2000mm/s=800 mm³/s (Vc=120m/min=2000mm/s). Power=u×MRR=2.0×800=1600W. Fc=Power/Vc=1600/2=800N.

Source: GATE ME 2007 (2007)

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