Conventionally, what type of surface is produced by a turning operation in a lathe machine?

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ALP CBT 2 Fitter Previous Paper: Held on 21 Jan 2019 Shift 1
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  1. Cylindrical
  2. Square
  3. Flat
  4. Irregular shape

Answer (Detailed Solution Below)

Option 1 : Cylindrical
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Explanation:

  • Turning is a process of removing excess material from the workpiece to produce an axisymmetric surface, in which the workpiece rotates in a spindle, and the tool moves in a plane perpendicular to the surface velocity of the job at the tool-job contact point.
  • Turning operations are performed on a machine tool called a lathe.
  • In straight turning, the tool moves parallel to the job axis to machine the rotating job for producing a cylindrical surface.
  • If the tool moves radially inward to the end of the job, facing operation will be done.
  • In taper turning, a conical surface is produced.

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  • The process parameters of interest in turning are cutting speed, feed, and depth of cut. 
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