The taper in a taper pin reamer is

The taper in a taper pin reamer is
| The taper in a taper pin reamer is

A. 1 in 20

B. 1 in 50

C. 1 in 75

D. 1 in 100

Please scroll down to see the correct answer and solution guide.

Right Answer is: B

SOLUTION

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 machine spindle.

Reaming by using hand reamers is done manually for which great skill is required.

Types of hand reamer:

  • Parallel hand reamer with parallel shank
  • Hand reamer with pilot
  • Socket reamer with 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.