Short Answer:

Threading is a process that involves cutting or forming threads on a workpiece using tools like taps, dies, or machines. Since this operation includes sharp tools, rotating parts, and possible metal chips, it is important to follow proper safety precautions to avoid accidents or injuries.

Basic safety steps include wearing safety gear, using sharp and correct tools, securing the workpiece properly, applying cutting lubricant, and keeping hands away from rotating parts. Regular inspection of tools and a clean working area are also necessary to ensure safe and smooth threading operations.

Detailed Explanation:

Safety precautions during threading

Threading operations are commonly performed in fitting shops, mechanical workshops, and manufacturing units. Whether using manual tools (like taps and dies) or machines (like lathes or thread rolling machines), safety must be given high importance. Since threading involves cutting metal, producing sharp edges, chips, and applying force, unsafe handling can lead to cuts, tool breakage, or even serious injuries.

Let us now understand the most important safety precautions that should be followed during threading.

1. Wear proper personal protective equipment (PPE)

• Always wear safety goggles to protect your eyes from flying metal chips.
• Use gloves while handling rough metal rods or taps/dies, but avoid gloves near rotating machines.
• Wear protective clothing (apron or overalls) to keep away metal shavings.
• Use safety shoes to protect your feet in case a heavy tool or part falls.

2. Use sharp and correct tools

• Use sharp taps and dies for clean threading.
• Do not use cracked, worn-out, or damaged tools, as they may break during operation.
• Select the correct size of tap or die based on thread standards.
• Use the proper tap wrench or die holder; never use pliers or spanners.

3. Secure the workpiece properly

• Fix the workpiece tightly in a bench vice or machine chuck.
• Loose parts may spin or slip, causing serious injury.
• Make sure the holding fixture is stable and does not vibrate during cutting.

4. Apply cutting lubricant or oil

• Always apply cutting oil or lubricant during threading to reduce friction and heat.
• It helps in smoother cutting, longer tool life, and cleaner threads.
• Avoid threading dry, as it may lead to tool damage or thread defects.

5. Do not use excessive force

• Apply gentle and even pressure during threading.
• For taps, rotate half a turn forward and then a quarter turn backward to break the chips.
• Excess force can cause the tap or die to break suddenly, which is dangerous.

6. Keep hands away from rotating parts

• When threading on a lathe or power machine, never touch the rotating workpiece.
• Avoid wearing loose clothes or jewelry that may get caught in moving parts.
• Use tools like a brush or stick to clear chips, not your fingers.

7. Clean and check tools regularly

• After use, clean the taps and dies with a brush and oil.
• Store tools in proper boxes to avoid rust and damage.
• Check tools before each use to ensure they are in good condition.

8. Maintain a clean and organized work area

• Remove metal chips and waste regularly.
• Do not leave tools lying around; it can cause slipping or cuts.
• Keep the floor dry and clean to prevent accidents.

9. Know the emergency procedures

• Be aware of the emergency stop button in case of machine threading.
• Keep a first-aid box nearby in case of cuts or injuries.
• Inform your supervisor or instructor immediately in case of any unsafe situation.

Conclusion

Threading is a routine but sensitive process in mechanical workshops that must be done with proper care. By following essential safety precautions such as using protective gear, securing the workpiece, using the right tools, and maintaining a clean working environment, accidents can be prevented. Safety should never be ignored, whether threading is done manually or by machine. A safe workplace ensures both quality and well-being.