EXPLAIN ABOUT SPECIFICATIONS OF DRILLING MACHINE:
A drilling machine is used to make holes with required sizes on work piece.
1. For radial drilling machine, it should Consider the main length of arm and diameter of the column.
2. The main specification also used to consider the work piece surface.
3. There should also consider the main things in about drilling size, diameter of hole, number of holes etc.
4. For a given portable drilling machine it should consider the maximum diameter of the drill that held to it.
5. Until the machine used to drill the work piece up to sensitive.
There are three different types of sizes used for specification. They are as follows:
1. Number sized drill.
2. Letter sized drill.
3. Fractional sized drill.
