Metal Tapper

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Suzhou Yihong Metal Products Co., Ltd. is located in Zhangjiagang Free Trade Zone, Suzhou City, Jiangsu Prov- ince, which is located on the coast of Jiangnan and Taihu Lake, and is close to Yanjiang and Shanghai-Nanjing. Sitong. There is a deep-water wharf of the Yangtze River in the area, and the traffic is very convenient. Enterprise land occupation , with excellent R&D team and many employees. Yihong is committed to the design, development, production and sales of hard tools, and spray processing. The main products include diamond tools, brazed diamond tools, Alloy tools, resin bonded grinding wheels, etc. Specific prod- ucts include diamond saw blades, cutting blades, perforators, grinding wheels, grinding heads, cemented carbide rotary files, Non-standard special-shaped tools such as alloy file, alloy hole opener and alloy grinding wheel.

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What is Metal Tapper?

Metal tapping is a technique used in metalworking and sheet metal fabrication that involves using a tool, called a tap, to create a straight threaded hole in a piece of metal for a screw or bolt.

Benefits of Metal Tapper

Increased efficiency
Tapping machines significantly enhance efficiency by automating the tapping process. With manual tapping, the operator’s speed and precision may vary, leading to inconsistent results and increased production time. In contrast, tapping machines operate at a consistent speed, ensuring uniform threads and reducing the overall production time.

Enhanced precision
Precision is of paramount importance in manufacturing, especially when it comes to creating threads. Tapping machines are designed to deliver precise and accurate results consistently. They eliminate the risk of human error, ensuring that each thread is created with the exact specifications required. This precision contributes to better product quality and minimizes the chances of faulty threads.

Time and cost savings
By automating the tapping process, tapping machines save both time and cost. These machines can tap multiple holes simultaneously, reducing the time required for the process. Moreover, the consistency and accuracy of tapping machines reduce the need for rework or repairs, saving costs associated with material wastage and labour.

Improved worker safety
Manual tapping can be physically demanding and potentially hazardous for workers. Tapping machines eliminate the need for manual labour in the tapping process, reducing the risk of injuries caused by repetitive motion or accidents. Workers can be allocated to other tasks that require their skills and expertise, promoting a safer and more efficient work environment.

Versatility in application
Tapping machines are versatile tools that can be utilized across various industries and applications. Whether you are in automotive manufacturing, aerospace, electronics, or any other field that requires thread creation, tapping machines can accommodate different materials and thread sizes, making them adaptable to diverse production needs.

Increased production capacity
With their automated and efficient operation, tapping machines can significantly boost production capacity. By reducing the time required for tapping, these machines allow manufacturers to complete more orders within a given timeframe. This increased production capacity enables businesses to meet higher demands and achieve better profitability.

Types of Metal Tapper

Spiral point taps (gun taps): These have a special spiral point which helps in pushing chips ahead as it passes through holes entirely. They cut cleaner and faster than other kinds of taps and are thus convenient where chip evacuation is a concern.

Forming taps (roll taps): Instead of cutting threads, these tools deform material to form threads without producing any chips. With this method, stronger threads can be created more efficiently especially when working with ductile materials like aluminum.

Straight flute taps

These taps consist of straight grooves or flutes and are mainly used for hand tapping; they are the most common type of taps. They work best when creating threads in soft materials or cleaning up existing threads.

Spiral flute taps

These lifts chips out of the hole because they have spiral flutes, making them good for blind holes. Materials that produce long, stringy chips benefit especially well from them.

Pipe taps

Designed specifically for tapping threads in pipe fittings. Its shape is more rounded to conform to pipes’ shapes.

Components of Metal Tapper

Body: This is the longest and most important part. The body of a tap is what does the cutting. It contains both the thread chamfers and the full threads. The number of these varies depending on the tap type.

Shank: The shank is located just above the body. It is smooth and has a cylindrical shape. The shank length differs according to tap type. This part has marks that indicate the distance between the threads.

Tang: This is the squared-shaped part above the shank. Based on the mode of operation (manual or automatic), manufacturers fix the tang on a holder to rotate the tap.

Flutes: Flutes are grooves on taps that accommodate and expel the chips during tapping. They come in different types and shapes based on the tap type. As a standard, a tap contains 2-4 flutes which can be angular, straight, or spiral.

Land: The land is the threaded part between the flutes.

Heel: This is the slanted area behind the threads.

Cutting face: This is the surface of the tapping tool that comes in contact with the material.

How to Maintain Metal Tapper

01/

Regular cleaning
One of the fundamental aspects of maintaining a tapping machine is regular cleaning. After each use, make sure to clean the machine thoroughly to remove debris, chips, and cutting fluids. Use a brush or compressed air to clean hard-to-reach areas and ensure that all parts are free from buildup. Cleaning not only prolongs the life of your machine but also prevents contamination and ensures smooth operation.

02/

Lubrication
Proper lubrication is crucial for the smooth functioning of your tapping machine. Apply lubricant to moving parts, such as the spindle, chuck, and gears, as recommended by the manufacturer. Avoid over-lubrication, as it can attract dust and debris, leading to potential issues. Regularly check the lubrication levels and replenish as needed to maintain optimal performance and reduce wear and tear.

03/

Inspection and calibration
Regular inspection and calibration of your tapping machine are essential to identify any issues early on and ensure accurate threading. Inspect components such as the chuck, collets, and alignment of the tapping head for signs of wear, damage, or misalignment. Use precision tools to calibrate the machine and verify thread quality to maintain consistency and accuracy in your tapping operations.

04/

Proper storage
When not in use, store your tapping machine in a clean, dry, and dust-free environment. Protect it from exposure to moisture, extreme temperatures, and corrosive substances that can damage the machine’s components. Use protective covers or cases to shield the machine from dust and debris when stored for extended periods. Proper storage prolongs the lifespan of your machine and ensures it’s ready for use when needed.

05/

Training and operator knowledge
Ensure that operators using the tapping machine are adequately trained and knowledgeable about its operation, safety protocols, and maintenance requirements. Provide training on proper handling, setup, and use of the machine to prevent accidents, minimize downtime, and maximize productivity. Encourage operators to report any abnormalities or issues promptly for timely maintenance and repairs.

06/

Scheduled maintenance checks
Establish a schedule for routine maintenance checks and servicing of your tapping machine. This may include scheduled inspections, lubrication, calibration, and replacement of worn parts as per the manufacturer’s recommendations. Adhering to a maintenance schedule helps prevent unexpected breakdowns, maintains performance efficiency, and extends the lifespan of your machine.

How Do I Choose the Right Tap for Metal Tapping?

Choosing the right tap for metalworking depends on a few factors, including the type of metal you are working with, the size and depth of the hole you need to thread, and the type of thread you need to create. Here are some guidelines to help you choose the right tap:

Identify the type of metal you will be working with. Different metals have different properties and may require different types of taps to thread effectively. For example, softer metals like aluminum may require a different tap than harder metals like steel.

Determine the size of the hole you need to thread. Taps come in a range of sizes, and it is important to choose one that is the right size for the hole you are working with. If the tap is too small, it may not be able to cut threads effectively, and if it is too large, it may not fit in the hole properly.

Consider the type of thread you need to create. Taps are designed to create different types of threads, such as Unified National Coarse (UNC), Unified National Fine (UNF), or Metric threads. Choose a tap that is designed to create the type of thread you need.

Select a tap with the appropriate number of flutes. Taps typically have either 2 or 3 flutes, which are the cutting teeth on the tap. A tap with 2 flutes is generally better for softer metals, while a tap with 3 flutes is better for harder metals.

Consider the material and coating of the tap. Taps can be made of different materials, such as high-speed steel or cobalt, and can have different coatings, such as titanium nitride, to improve their durability and cutting ability. Choose a tap that is appropriate for the type of metal you are working with and the conditions in which you will be using it.

How to Tap Threads

The success of any tapping operation depends on a number of factors, all of which affect the quality of the finished product. Follow these steps to ensure a good tapping thread operation.

Select the correct tap for the component material and the type of hole to thread.

Ensure that the component is securely clamped—lateral movement may cause tap breakage or poor quality threads.

Select the correct drill for the component material and drill size.

Always ensure that work hardening of the component material is kept to a minimum (check the drill condition).

Select the correct cutting speed.

Use the appropriate cutting fluid for the application. See section "How to use coolant in tapping operations" here below.

In NC applications, ensure that the feed value chosen for the program is correct. When using a floating tapping attachment, 95–97% of the pitch is recommended to allow the tap to generate its own pitch and hold the tap in a good quality torque limiting tapping attachment. This ensures free axial movement of the tap and presents it squarely to the hole. It also protects the tap from breakage if accidentally “bottomed” in a blind hole.

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FAQ

Q: What is the tapping process?

A: Tapping is the process of cutting a thread inside a hole so that a cap screw or bolt can be threaded into the hole. Also, it is used to make thread on nuts.

Q: How do you tap metal with a drill?

A: Spray oil or tapping fluid over the hole in the metal to help lubricate the wrench. Place the drill vertically in the hole. With the drill set to forward position, gently press the trigger to apply light pressure. Rotate a few revolutions clockwise, then measure the tap with a square ruler to ensure it enters straight.

Q: What is tapping in steel?

A: Furnace tapping is the process of removing slag and hot metal from furnace hearth. The tapping process is the most important factor that determines the in-furnace gas pressure and residual amounts of iron and slag in the hearth.

Q: How do you tap hard metals?

A: Coat the tap with cutting and tapping fluid. Place a bit of fluid on / in the hole to be tapped. Align the tap with the drilled hole in the metal. Start threading the hole in the metal by turning the tee-handle tap wrench clockwise for a right-hand threaded hole or counter-clockwise for a left-hand threaded hole.

Q: Why is tapping necessary?

A: In large transformer, tapping allows you to change the primary and secondary windings at any time if you want. This means by using tapping, it allows a certain number of turns to be selected with a variable turns ratio is produced, enabling voltage regulation of the output.

Q: What is the difference between tapping and drilling?

A: Drilling and tapping are two different actions. Drilling refers to creating a smooth hole in a material with a drill and motor. Tapping is the action that creates a thread into the side of the hole.

Q: What oil to use for tapping?

A: Generally, for best tap performance, straight cutting oil should be used. For non-ferrous and non-metallic materials, a coolant or a cutting fluid (light oil or soluble oil) is recommended.

Q: Is tapped the same as threaded?

A: While tapping is the process of creating internal threads within a hole, threading is the process of creating external threads on the cylindrical body of a screw, bolt or other part to be assembled (like pipes).

Q: Can sheet metal be tapped?

A: Tapping in sheet metal is the use of a tapping tool to form material in a pre-punched or extruded thru hole, to create threads for engagement of a non-self-tapping screw. This application is typically needed for connecting one piece of sheet metal to another item.

Q: How to clean threads after tapping?

A: The only way to really clean the threads is to run a thread chaser or very carefully a thread cutting tap.

Q: Should I use oil when tapping threads?

A: Cutting oil is available at any hardware store. You can if necessary get away without this but I recommend it. We found, having tried it, that lubrication did two things: it made starting the tap a lot easier, and it made the threads a little tighter so that the screw was not quite as loose in the hole.

Q: What is the best lubricant for tapping?

A: Generally, for best tap performance, straight cutting oil should be used. For non-ferrous and non-metallic materials, a coolant or a cutting fluid (light oil or soluble oil) is recommended.

Q: What is the lubricant called when tapping?

A: CT-90 is specially formulated Cutting/Tapping/Reaming/Drilling lubricant fluid which will not breakdown under extreme pressure. CT-90 will allow the removal of swarf and cut chips of metal by the cutting tool with less friction. CT-90 allows less effort when cutting is required for even the hardest metal.

Q: Which lubricant is used during tapping in brass?

A: Kool is versatile and can be used on soft metals such as aluminium and brass, or with harder difficult stainless steels and similar. It is also recommended for hard-to-lubricate areas including the inside threading of pipes.

Q: What is dry tapping?

A: What is Dry Tapping? Dry Tapping is simply tapping into an empty line or pressure vessel. Advantages are shorter lead times, usually a fraction of the cost, less time consuming than traditional bolt-ups and reduces risk of potential leaks by reducing the number of gasketed connections.

Q: What is the cold tapping method?

A: Cold Tapping Procedures
Cold tapping involves creating connections on non-pressurized systems. The workers depressurize and isolate the pipeline from active systems before tapping.

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