Drill Machine – Different Parts in ITI Turner Trade

In the ITI Turner trade, drilling is one of the most important machining operations used to create holes in metal workpieces. The drill machine is widely used in workshops for accurate and efficient drilling. Understanding the different parts of a drill machine is essential for proper operation, maintenance, and safety. This chapter explains the construction and main parts of a drill machine in detail.

Introduction to Drill Machine

A drill machine is a machine tool used to produce circular holes in solid materials. It operates by rotating a cutting tool called a drill bit, which removes material from the workpiece.

Drill machines are commonly used in workshops for drilling, reaming, tapping, and counterboring operations.

Types of Drill Machines

Before understanding the parts, it is important to know the common types of drill machines:

• Portable Drill Machine
• Bench Drill Machine
• Pillar Drill Machine
• Radial Drill Machine

Although types may vary, the basic parts of a drill machine remain similar.

Main Parts of Drill Machine

1. Base

The base is the bottom part of the drill machine. It supports the entire machine and provides stability. It is usually made of cast iron and may have slots for clamping workpieces.

2. Column

The column is a vertical cylindrical structure mounted on the base. It supports the table and head of the machine and provides alignment.

3. Table

The table is used to hold the workpiece. It can be adjusted vertically and sometimes rotated or tilted to suit different operations.

• Supports the workpiece
• Can be moved up and down
• May have T-slots for clamping

4. Drill Head

The drill head is mounted on the column and contains the driving mechanism. It houses important components such as the motor, spindle, and gear system.

5. Spindle

The spindle is a rotating part that holds and drives the drill bit. It rotates at different speeds depending on the material and operation.

6. Chuck

The chuck is attached to the spindle and is used to hold the drill bit securely. It can be tightened or loosened using a chuck key.

7. Drill Bit

The drill bit is the cutting tool used to make holes. It is made of high-speed steel or other materials and comes in different sizes and shapes.

8. Motor

The motor provides power to rotate the spindle and drill bit. It is usually an electric motor mounted on the drill head.

9. Feed Mechanism

The feed mechanism controls the movement of the drill bit into the workpiece. It can be manual or automatic.

• Manual feed using a lever
• Automatic feed in advanced machines

10. Speed Control System

The speed control system allows adjustment of spindle speed according to the material and type of operation. It may use belts, pulleys, or gears.

11. Depth Stop

The depth stop is used to control the depth of the hole. It ensures uniform hole depth during repeated operations.

12. Handle (Feed Lever)

The handle or feed lever is used to move the spindle up and down manually during drilling.

Working Principle of Drill Machine

The drill machine works on the principle of rotating the drill bit and applying downward force to cut material. The rotating drill bit removes material in the form of chips, creating a hole.

Uses of Drill Machine

Drill machines are used for various operations in the workshop:

• Drilling holes
• Reaming for finishing holes
• Tapping for threading
• Counterboring and countersinking

Advantages of Drill Machine

• High accuracy
• Easy to operate
• Suitable for various materials
• Efficient and time-saving

Limitations of Drill Machine

• Limited to circular holes
• Requires proper setup
• Risk of accidents if not used properly

Safety Precautions

Safety is very important while operating a drill machine:

• Wear safety goggles
• Secure the workpiece properly
• Do not wear loose clothing
• Switch off machine before adjustments
• Use correct speed and tool

Maintenance of Drill Machine

• Keep the machine clean
• Lubricate moving parts regularly
• Check alignment and tightness
• Replace worn-out parts

Application in Turner Workshop

In the Turner trade, drill machines are used for making holes in workpieces before or after turning operations. They are also used for finishing and threading operations.

Understanding the parts of the drill machine helps trainees operate it efficiently and safely.

Conclusion

The drill machine is an essential tool in the ITI Turner trade. Knowledge of its different parts and functions is important for performing accurate and efficient machining operations.

By understanding the construction and working of the drill machine, trainees can improve their skills and ensure safe working practices.

In conclusion, proper use and maintenance of the drill machine lead to better productivity and high-quality work.