Taps and dies constitute such a special group of tools that may be needed at any time of work. Thanks to their kits, it is possible to repair jammed internal threads and torn off bolts, as well as restore single samples of nuts and studs, which can be difficult to buy in retail. Due to the fact that dies and taps have different designs, methods of application, areas of use, they should be considered in detail separately.
Among the existing detachable connections, threaded ones are considered especially reliable. At one time (before the first use of the screw-cutting lathe in the 17th century), each pair of nut-bolt was made individually and they could not be interchangeable. In the 19th century, humanity began to apply special standards for the application of internal threads. It can be carried out both with a machine tool and with taps.
A modern tap without fail has the following design elements:
When making a cross-cut, the formation of the groove will depend on two of its surfaces: the front edge of the cutting tooth of the tap and the back of this tooth.
Chip flutes can be of the following types:
The main types of taps have only their inherent exclusive characteristics. Knowing these characteristics, you can always choose the right tap model:
IMPORTANT! It is worth remembering that any taps are subdivided into left-hand and right-hand thread devices.
According to the area of their use, taps are divided into:
Taps by their own design can be very different from each other:
There are also exclusive designs, which are due to special production tasks.
Individual taps are required for each thread size and type. They are not interchangeable and neither are threaded. The main types can be distinguished:
All taps during operation endure large mechanical / thermal influences, and the tool itself must cut a large number of holes at this time. Accordingly, high quality tool steels are required for production materials:
IMPORTANT! However, such metals have one major drawback - if damaged, the tap for threading cannot be freely drilled / removed.
In total, it includes four main stages:
The tool in question, of course, is not entirely durable, prone to banal obsolescence and natural wear and tear. The most common damage cases:
If any of the above cases occurs, then there is no need to rush and try to drive the thread faster or try to skip the tap from the set. All this can result in temporary losses, and therefore all extraction operations should be done slowly.
Bolting is the most popular type of fastener. However, even super-quality threads will deteriorate over time. And here there are two ways - you can turn to a professional locksmith for help or apply the thread yourself. In any case, for this operation, a set of punches or dies will be needed - this is how hand tools are called for applying external threads. By means of them, it is possible to quickly restore worn-out hardware or to manufacture the required part for an already existing stud / bolt.
The first characteristic that distinguishes one die from another is the body structure. According to this indicator, they are divided into:
On this basis, the dies can be subdivided:
By profile, dies can be:
In order to cut, one die will not be enough. It is also necessary to use an assistant device for holding and clamping the stick - it is called a die holder. One such device is immediately designed for several sizes - from small to large. The die is installed inward and held in place with a screw.
For the production of die-cutters, high-speed steel P18 or P6M5 is used as standard. They are good in terms of "price / quality", have an extended operating period and do an excellent job with minor repairs and household work.
Basically, the principle of action is quite simple, however, and there are some nuances here:
IMPORTANT! It is necessary to constantly monitor the position of the holder in relation to the workpiece - it must always be perpendicular in the absence of inclination!
First of all, you need to clearly separate all the tools and navigate the set. There are professional versions of the kits, and there are also amateur ones designed for household use.
First you need to decide on the type of dies / taps. For example, which system is assumed for the preferred use - inch or metric. In Russia, the metric system is more often used. Here you can visually identify the levers of this system by the sign of their conical shape and the established metric thread pitch. It is also worth considering the fact that the threads of the scraper have a triangular profile - this can be seen from the last turns of the blades. Thus, using such a tool, the nut will be able to screw onto the restored thread.
The accuracy of the required cutting will be achieved by means of split dies, and if precise cutting is not needed, then it makes sense to take a set with solid punches. Of course, most professionals advise purchasing a set that contains all the existing types of cutting.
Separately, it is necessary to remember the cases - the sets can be in convenient plastic or wooden boxes, they allow you to comfortably transport the entire tool. And if necessary, it is easy to use it.
Regarding the material of manufacture - in this case, there is no need to philosophize much - the tool, by definition, is made of high-strength high-carbon steel.However, you should still avoid outright counterfeit - usually Asian "know-name" manufacturers make their sets from soft metals.
An excellent and inexpensive set of domestic production, perfect for household needs. Although the toolbox is small, it can handle the most common household tasks. The case is made of plastic, it has foam rubber recesses for storing the tool.
|Number of items||14|
|Total weight, gram||600|
An advanced kit from a foreign manufacturer. It is quite capable of coping not only with everyday tasks, but can also be used for simple minor repairs of auto parts. Supplied in a metal case, tool compartments made of plastic.
|Number of items||24|
|Total weight, gram||1200|
In many ways, a universal kit, because it can be used both for the locksmith and for the automotive part. Most of the dies and taps for standard threads are present in it. Excellent quality of sharpening allows you not to use excessive force when working. The case is made of steel, has a strong lock.
|Number of items||31|
|Total weight, gram||1300|
Like most professional sets, this one is distinguished by a large number of tools in a set, a wide range of their application, and the use of several marking systems at once. All tools are made of high-carbon, high-strength steel and are capable of withstanding the maximum loads when installed in machine tools.
|Number of items||24|
|Total weight, gram||900|
This set is distinguished by a convenient arrangement of objects in the case - taps at the bottom, dies on top. There is a special gate with embossed handles to hold the tool under the internal thread. A universal ram holder for all sizes is also available. Users note the high quality of cutting, both with machine and manual operation.
|Number of items||45|
|Total weight, gram||1100|
Maximum professional set for 110 items. Able to perform absolutely any work, both in household and production terms. Fully suitable for machining parts made of all materials - aluminum, cast iron, steel and copper. All tools are made of innovative ultra-strong cutting steel 9XC.
|Number of items||110|
|Total weight, gram||1500|
In the course of market analysis, it was found that the Russian buyer still prefers foreign versions of the kits. This is due to their wider functionality, as well as additional equipment. At the same time, users from Russia try to make most of their purchases via the Internet. The reason for this is the high cost of a really good kit, in connection with which it is required to generate some financial savings, which allows you to do online shopping.