Parts And Functions Of Drill Machines

drill machine

There are many types of drill machines, here we take a closer look at the handheld power drill.

It is a practical and versatile tool when it comes to drilling a hole in different materials. Be it wood, plastic or stone – the drill allows you to drill holes with different diameters and depths.


The externally visible part of the drill is the housing. It is usually made of plastic and is manufactured in half-shell construction.

On the housing are manufacturer information and usually a nameplate indicating the electrical power consumption, the number of revolutions, the operating voltage, and the protection class?

Many drills still have an extra handle that attaches to the housing. Such a drill is easy to hold with two hands.


The electric motor is the heart of every drill. It generates the necessary rotational movement of the drill. Most motors are operated with 220V AC voltage.


The high speed of the electric motor is not suitable for drilling, so by means of a gearbox, the high speed of the motor is translated into a lower speed of the drill.

In this case, a gear transmission is used, which is designed as a manual transmission. This makes it possible for at least 2 different gear ratios (“gears”) and sometimes even a “reverse gear”. This setting is made with the “gearshift”.


This part of the drill is an attachment that picks up the drill and allows you to work with different drills by swapping them quickly. By the chuck key, the jaws can be moved inside the chuck and the drill can be fixed or loosened again.

Drill Bits

The drill (more precisely, the drilling tool) is the insert that is picked up by the drill chuck. Through the cutting edge at the top, he penetrates into the material. There are drills for various materials – for metal, stone, wood, and plastic. The drill with a conical head.

A special type of hand drill is the impact drill. Here, the (switchable) impact mechanism in addition to the rotational movement of the drill lifting movements at high frequency. These feel like a vibration during drilling and support the drilling of materials such as concrete or stone.