Which of the following processes results in the best accuracy of the hole made?

Question

Question

This question was previously asked in

BPSC AE Paper 6 (Mechanical) 2012 Official Paper

Answer 1

Explanation:

Reaming

Reaming is a process to make a hole smooth.
Reamers are generally used for reaming a hole.
Reamers are edge cutting tools and help to cut and smoothen the edge of a hole already drilled in the workpiece.
Reaming is done after drilling a hole in your workpiece.
The drilling diameter of the hole is kept a little less than the target diameter when you drill.
To have the target diameter after reaming.
There is a difference between the drill's diameter and the reamer's diameter. This is known as an allowance.
There are many types of reamers such as the straight reamer, rose reamer, shell reamer, etc.
By drilling, gives a hole that may not be as perfect as you expect. But after boring the hole and then reaming the hole gets the perfect shape.

Tapping is the process of cutting a thread inside a hole

The Differences between drilling, boring, and reaming

The process of boring always comes after drilling. And reaming comes at last. The sequence is always the same.