Which one of the following primary purpose do the flutes on a twist
drill serve?
They
curl the chips for the easy removal of chips
They
provide for additional cooling
They give a better aerodynamic design for material cutting
They
reduce friction on the cutting edge
They
curl the chips for the easy removal of chips
Two
or more spiral grooves that run the length of the drill body are called flutes.
Main
purpose of flutes are as follows :
1.
It help from the cutting edge of the drill point.
2.
Curl the chip tightly for easier removal.
3.
From channels through which chips can escape from the whole being drilled.
4.
Allow the coolant and lubricant to get down to the cutting edge.
Hence, the correct option is (A).
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