explain how a small powerdrill like the picture is assembled

explain how a small powerdrill like the picture is assembled, it has an 1,3 Ah battery, one motor, gear.

Solution

The following are the parts of a small power drill in an order from the tip of the drill bit to the screws at the bottom of the handle.

1. Drill bit

2. Drill Chuck

3. Gear

4. Bearings

5. housing(Outer visible part)

6. Motor (DC)

7. fan or Heat sink

8. Dust cover

9. Battery

11. Switch

12. Screws

We are going to study by dividing it into three parts

1. Transmissioin (between chuck and DC motor):

The transmission is connected to motor, battery and heat sink. Trasmission consists of gears, ball bearings and a cutoff(in case of excessive heating). The front part consists of spring mechanism and breaking mechanismfollowed by gears.

2. Motor

The back portion consists of motor. Series wound universal motors are generally used due to its high torque. A typicalmotor consists of two permanent magnets with current flowing \'c\' so that the torque is produced by the magnetic feild. The current travels from the battery through the brushers and commutator.

3. Battery

Li-ion battery is used which is placed in the handle along with a switch.

The whole arrangement is placed from drill bit to the chuck for adjusting torque to the transmission and motor which is powered by a battery in a compact design for simple and elagant use..