Drilling is a cutting process that uses a drill bit to cut a hole of circular cross-section in solid materials. The drill bit is usually a rotary cutting tool, often multi-point. The bit is pressed against the work-piece and rotated at rates from hundreds to thousands of revolutions per minute. This forces the cutting edge against the work-piece, cutting off chips (swarf) from the hole as it is drilled.
here is some type of drilling we are doing like :
Vertical Drilling:
Vertical drilling machine A drilling machine with a vertical arrangement of spindles and a fixed center position, referred to as a vertical drill. It is often used in machinery manufacturing and repair factories to process holes for small and medium-sized work pieces.
Hand Drilling:
A small portable drilling machine resembling a breast drill but designed to be held and operated by hand. : a primitive drill consisting of a shaft carrying a point of stone, bone, shell, or metal and revolved usually by the palms of the hands.
Magnetic Drilling
The base of a magnetic drill is equipped with a powerful electromagnet to easily clamp the machine on the work piece to be drilled. When energized this magnet is held on the metal work piece locking the machine base to the surface.
Taping Drilling
Tapping involves creating threaded holes in a workpiece. These threads are designed to enable engagement with machine screws, bolts, and other threaded features. It allows them to be securely engaged in their intended holes. Anywhere that a machine screw or bolt engages with a component, the hole is likely to have been tapped.