Grooves are given in the body of the reamer _______.

Explanation:

Reamer:

• A reamer is a multi-point cutting tool used for enlarging by finishing previously drilled holes to accurate sizes.

Terms relating to cutting geometry:

Flutes:

• The grooves in the body of the reamer are used to provide cutting edges, permit the removal of chips, and allow the cutting fluid to reach the cutting edges.

Heel:

• The edge is formed by the intersection of the surface left by the provision of a secondary clearance and the flute.

Cutting edge:

• The edge is formed by the intersection of the face and the circular land or the surface left by the provision of primary clearance.

Face:

• The portion of the flute surface adjacent to the cutting edge on which the chip impinges as it is cut from the work.

Rake angles:

• The angles in a diametral plane are formed by the face and a radial line from the cutting edge.

Clearance angle:

• The angles are formed by the primary or secondary clearances and the tangent to the periphery of the reamer at the cutting edge. They are called primary clearance angle and secondary clearance angle respectively.

Helix angle:

• The angle between the edge and the reamer axis.