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What is the function of a “Pilot” when provided in reamer?

What is the function of a “Pilot” when provided in reamer? Correct Answer Finish concentric hole

Explanation:

  • A reamer is a multi-point cutting tool used for enlarging by finishing previously drilled holes to accurate size.
  • Reamers are classified as hand reamers and machine reamers.
  • Machine reamers are provided with morse taper shanks for holding on the machine spindle.
  • Reaming by using hand reamers is done manually for which great skill is required.
  • Types of hand reamer:
    • Parallel hand reamer with a parallel shank
    • Hand reamer with pilot
    • Socket reamer with a parallel shank
    • Taper pin hand reamer
      Straight and helical fluted reamers
  • Helical fluted reamers are particularly suitable for remain holes having keyway grooves or special lines cut into them.
  • Straight flute reamers are useful for general reaming work.
  • Taper reamers are available with straight or helical flutes. They generally have a taper of 1 in 50.
  • Pilot reamers have a cylindrical body and pilot keeps the reamer concentric with the hole being reamed.

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