What Is a Kharad Machine?

A Kharad machine, commonly known as a lathe machine, is a mechanical machine used to shape, cut, and finish materials such as metal, wood, and plastic. In Pakistan and some other South Asian regions, the word Kharad is commonly used for lathe machining, while the person operating the machine is often called a Kharadi.

Kharad machines are widely used in engineering workshops, automobile repair shops, agricultural machinery workshops, and manufacturing industries. They help produce accurate cylindrical parts, repair damaged components, and manufacture custom mechanical items.

From making shafts and bolts to repairing tractor parts and producing machine components, a Kharad machine plays an important role in mechanical engineering.

What Is the Purpose of a Kharad Machine?

The main purpose of a Kharad machine is to remove material from a rotating workpiece to achieve the required shape, size, and surface finish.

During a typical operation, the workpiece is held securely in the machine and rotated. A cutting tool moves against the rotating material, removing small amounts of material until the desired dimensions are achieved.

A Kharad machine can perform several operations, including:

• Turning cylindrical metal parts
• Cutting threads on shafts and rods
• Drilling holes
• Enlarging existing holes
• Producing grooves
• Finishing surfaces
• Cutting material to a required length
• Repairing worn or damaged components

The exact operations depend on the machine's design, available attachments, and cutting tools.

How Does a Kharad Machine Work?

A conventional Kharad machine works by rotating the workpiece while a cutting tool removes material from its surface.

The operator first selects the appropriate material, cutting tool, and machine settings. The workpiece is then secured in a chuck or between centers, depending on its shape and the operation being performed.

Once the machine is started, the workpiece rotates at a selected speed. The cutting tool is moved toward the workpiece and removes material in controlled amounts.

The operator adjusts the cutting depth, feed rate, and rotational speed to achieve the required dimensions and surface finish.

Basic Working Steps

1. Mounting the Workpiece

The material is securely held in the chuck or between centers to prevent movement during machining.

2. Selecting the Cutting Tool

A suitable cutting tool is selected according to the material and the operation.

3. Setting the Machine Speed

The spindle speed is adjusted according to the workpiece diameter, material, and cutting tool.

4. Starting the Machine

The machine rotates the workpiece while the cutting tool is positioned for the required operation.

5. Removing Material

The cutting tool gradually removes excess material to create the desired shape and dimensions.

6. Measuring the Finished Part

The operator checks the dimensions using suitable measuring instruments, such as a vernier caliper or micrometer.

Main Parts of a Kharad Machine

A conventional lathe consists of several important components.

1. Bed

The bed is the main supporting structure of the machine. It provides a stable base and guides the movement of the carriage and tailstock.

2. Headstock

The headstock contains the spindle and associated drive components. It rotates the workpiece at the selected speed.

3. Chuck

The chuck holds the workpiece securely while it rotates. Different chuck designs are available for different shapes and machining requirements.

4. Tailstock

The tailstock supports the free end of a long workpiece when required. It can also hold certain drilling and other tools.

5. Carriage

The carriage supports and moves the cutting tool along the machine bed.

6. Cross-Slide

The cross-slide moves the cutting tool across the workpiece, allowing the operator to control the cutting depth and machine flat or stepped surfaces.

7. Tool Post

The tool post holds the cutting tool in position and allows the operator to adjust its orientation.

8. Feed Mechanism

The feed mechanism controls the movement of the cutting tool. Depending on the machine, it can support automatic feeding and thread-cutting operations.

Types of Kharad Machines

Different types of Kharad machines are used according to the work required.

1. Centre Lathe

A centre lathe is a common general-purpose machine used for turning, facing, drilling, and thread cutting.

It is widely used in mechanical workshops and repair facilities.

2. Bench Lathe

A bench lathe is a smaller machine designed for light-duty work and small components.

It is useful for precision work where large machining capacity is unnecessary.

3. Turret Lathe

A turret lathe is designed to perform multiple machining operations efficiently, particularly when producing repeated components.

4. CNC Lathe

A computer numerical control (CNC) lathe uses programmed instructions to control machining movements.

CNC machines are commonly used in modern manufacturing because they can produce complex components with consistent dimensions and repeatability.

5. Wood Lathe

A wood lathe is designed specifically for shaping wood. It is commonly used to manufacture furniture legs, decorative objects, wooden handles, and other rounded wooden products.

Metalworking and woodworking lathes require different tools and operating practices.

Common Uses of a Kharad Machine

Kharad machines are useful in many industries because they can produce and repair a wide range of components.

Automobile Repair

Automotive workshops use lathe machines to manufacture or repair suitable cylindrical components, shafts, bushes, and other mechanical parts.

Some workshops also use specialized equipment to machine brake discs and drums, where permitted by the manufacturer's specifications and applicable safety requirements.

Agricultural Machinery

Agricultural workshops use Kharad machines to repair or manufacture parts for tractors, water pumps, agricultural implements, and other farm equipment.

These machines can be especially useful in areas where agricultural machinery needs regular maintenance.

Manufacturing Industry

Manufacturers use lathes to produce shafts, pins, spacers, threaded components, and other machine parts.

Industrial production may use conventional or CNC machines depending on the required quantity, complexity, and precision.

Construction Equipment

Repair workshops may use lathes to produce suitable replacement components for machinery used in construction and material handling.

General Engineering Workshops

Small engineering workshops use Kharad machines to produce customized metal parts, repair damaged components, and complete maintenance jobs.

Materials Used on a Kharad Machine

The material that can be machined depends on the machine's capacity, cutting tools, and operating conditions.

Common materials include:

• Mild steel
• Stainless steel
• Aluminium
• Brass
• Copper
• Cast iron
• Engineering plastics
• Wood, when using a suitable woodworking lathe

Different materials require different cutting speeds, tools, and machining techniques.

For example, aluminium is generally easier to machine than many steels, while stainless steel may require more careful tool selection and heat management.

Advantages of a Kharad Machine

A Kharad machine offers several practical advantages.

Versatility: It can perform multiple operations with appropriate tools and attachments.

Accuracy: Skilled operators can produce components to specified dimensions.

Repair capability: It can help restore certain worn or damaged parts when sufficient material and suitable repair methods are available.

Customization: Workshops can manufacture parts according to specific measurements and requirements.

Cost savings: Producing or repairing a component locally may be less expensive than replacing an entire assembly.

Wide applications: Lathe machines are useful in manufacturing, agriculture, automotive repair, and general engineering.

However, not every component can be safely or economically repaired by turning. Some parts require replacement or specialized processes.

Safety Precautions When Using a Kharad Machine

A Kharad machine contains rotating components that can cause serious injuries if operated incorrectly. Safety should always be a priority.

Important precautions include:

• Wear appropriate eye protection.
• Secure the workpiece and cutting tool before starting.
• Remove the chuck key before switching on the machine.
• Keep hands away from rotating components.
• Never wear loose clothing, jewelry, or gloves near exposed rotating parts.
• Tie back long hair.
• Stop the machine before measuring, adjusting, or removing the workpiece.
• Use a brush or suitable tool to remove metal chips rather than bare hands.
• Follow the manufacturer's instructions and workshop safety procedures.
• Ensure that guards and emergency-stop systems are functioning properly.

Only trained operators should perform machining operations, especially when working with heavy components or high-speed machinery.

Skills Required to Operate a Kharad Machine

Operating a Kharad machine requires technical knowledge and practical experience.

A skilled operator needs to understand machine settings, cutting tools, workpiece mounting, material properties, and measurement techniques.

Important skills include:

• Reading engineering drawings
• Measuring components accurately
• Selecting appropriate cutting tools
• Setting cutting speed and feed
• Performing turning and facing operations
• Cutting threads
• Identifying machining defects
• Maintaining the machine
• Following workshop safety procedures

Training under an experienced machinist can help beginners develop these skills safely.

Difference Between a Kharad Machine and a Milling Machine

A Kharad machine and a milling machine both remove material, but they work differently.

On a conventional lathe, the workpiece usually rotates while the cutting tool moves against it. This makes the lathe particularly suitable for cylindrical and round components.

On a milling machine, the cutting tool usually rotates while the workpiece is held and moved relative to the tool. Milling is especially useful for producing flat surfaces, slots, pockets, and more complex shapes.

Both machines are important in mechanical engineering, and many workshops use them together.

Conclusion

A Kharad machine, commonly known as a lathe machine, is an important piece of equipment in mechanical engineering and manufacturing. It shapes materials by rotating a workpiece against a cutting tool, allowing operators to produce cylindrical components, cut threads, finish surfaces, and perform various repair operations.

Its applications range from automobile and agricultural machinery workshops to industrial manufacturing and general engineering.

Although modern CNC lathes have introduced greater automation and repeatability, conventional Kharad machines remain valuable because of their versatility and usefulness in repair work.

With proper training, suitable tools, accurate measurements, and strict safety precautions, a Kharad machine can help produce reliable components and support a wide range of engineering activities.