What does the tapping process involve?

Electric tapping machines are essential when creating strong and secure threaded connections. Put simply, the tapping process involves creating threaded holes to secure bolts or screws to a component. Precision is critical to ensure each connection is solid and functional.

Why precision matters in tapping

What is the purpose of tapping in machining?

Accuracy and precision are critical when creating multiple holes. Electric tapping machines are dependable for creating taps with precise control over the cutting process and thread depth. Machines from specialists such as cotswold-machinery-sales.co.uk/roscamat-tapping-machines/electric-tapping-machines/roscamat-tiger-electric-tapping-machine are designed to make threaded holes rapidly and with better repeatability than manual tapping.

How the tapping process works

The tapping process

While drilling may be part of the tapping process, thread tapping is a precision way for the cutting face to engage and create a threaded rather than smooth hole. This reduces the tool wear and cutting force; importantly, it also improves the surface finish.

The rotating tap causes the sharp edges of the cutting face to bite into the material, shearing material away and creating the thread profile. Any swarf generated during the process is neatly evacuated via the tap’s flutes.

Picking the right tool for the job

Proper alignment is critical, as engagement between the tap and the material is minimal at the start of the process and any errors will result in defective and unusable threads. Proper lubrication is also essential as the tap draws itself further into the hole through rotation. The lubricant reduces friction and minimises the risks of the tap snagging.

Choosing the right tapping tool is key

Making the right tapping tool decision is critical, so key factors must be considered. First and foremost, your application will have specific requirements, including materials, thread size, and hole type. You will need to consider any special tap coatings to reduce friction and heat buildup. You must also ensure the equipment setup direction matches that of the tap.

Consider spiral point taps for effective chip evacuation, selecting the degree of taper to suit blind-hole or through-hole tapping. Always test your options before making your final selection.

Understanding the fundamentals of the tapping process will ensure you get the best out of your electrical tapping machines.

Summary

Explains the tapping process used to create threaded holes for bolts and screws, describing how electric tapping machines control the cutting process and thread depth precisely, how a rotating tap shears material to form the thread while lubrication reduces friction, and what to consider when choosing the right tool, including material, thread size and coatings.

Questions this article raises

• How does tapping differ from simply drilling a hole?
• What causes a tap to snag or break during the process?
• How is the right tap coating chosen for a specific material?