Pliers are a great tool. Pliers (tool)

The pliers tool refers to universal devices used to perform various technological operations... On modern market pincers are presented in a fairly wide range, so it is important to understand how to choose such a tool correctly, focusing on it specifications and functionality.

Purpose and principles of classification

Pliers are a multipurpose tool, with the help of which the following technological operations are performed:

clamp;
clamping;
compression.

Taking into account the fact that with the help of pliers, manipulations with various parts are performed, this tool is produced in various designs. Pliers are used of various designs to perform electrical and plumbing work, they are used in plumbing, construction and in many other areas. So, depending on the design and the main purpose, they are distinguished:

plumbing pliers;
automatic pliers;
devices with which they perform crimping operations;
clamping type welding pliers;
pliers, with the help of which they perform crimping of cable lugs;
end pliers, which are used to extract nails;
adjustable pliers.

Pliers (or, in other words, pliers, pliers) must be carefully selected to solve specific problems. The most simple in terms of design are pliers, which at the same time are characterized by wide versatility. Instruments of this type are very similar to adjustable pliers both in design and in functionality and are successfully used to grip and hold objects different forms and sizes, including pipes. That is why pliers can also be used as a pipe or adjustable wrench.

A separate category is made up of automatic tools, with the help of which they carry out stripping of insulation electrical cables for various purposes and diameter. This type of attachment can also crimp or crimp cable lugs of various diameters. Such pliers, depending on the diameter of the electrical cables to be crimped, are divided into several categories:

designed to work with cables with a diameter in the range of 2.5–3 mm;
telephone wires with a diameter of up to 7 mm;
telecommunication wires, the diameter of which can be over 8 mm.

Crimping pliers can be used both for crimping cable lugs and for stripping wires from insulation. Various models of tools in this category are also designed to work with wires of different diameters.

Welding pliers, classified as clamping tools, are used to clamp and hold workpieces during welding and locksmithing work. Even from the photo of such tools, it is clearly visible that their design has certain features. The main design difference lies in the design of the clamping elements: they are C-shaped. This means that the grips of the welding gun bear less stress when using them.

End carpentry (or locksmith) pliers in their own way design resemble a nailer. They, as a rule, differ in significant dimensions, which allows them to be used to extract not only very large nails, but also more impressive in size fasteners.

Design features of adjustable pliers

Since the clamping pliers are the most versatile tool, it is worth getting to know them in more detail. design features... According to the type of mechanism used, the adjustable pliers are divided into two categories of tools.

The adjustable mechanism can consist of an axis fixed on the movable jaw of the tool, and a groove on the stationary clamping element, which is a series of aligned circles. On the axis, so that it can be moved along the groove and thereby regulate the degree of unclenching of the jaws, a sector is specially cut out. This adjustable mechanism works as follows: the axis for movement along the groove is rotated so that its bevel is parallel to the side of the cutout. Having positioned the axis in this way, the adjustable pliers are set to the required size of the jaw spreading.

The most common are adjustable pliers, the mechanism for unclenching the jaws of which is made according to the so-called American system. On the stationary jaw of such tongs there is a row of circular grooves along which the "tide" moves, made on the movable handle of the tool.

To adjust the degree of unclenching of the pliers, you must perform the following steps:

Remove the "tide" from its engagement with the side walls of the grooves.
Spread the jaws of the pincers as far apart as possible.
Align the handles of the tool in the desired position and bring them together again.

Adjustable pliers, equipped with a mechanism of the second type, are considered more reliable and easier to use.

Many experts, when comparing plumbing pliers with conventional adjustable wrenches, emphasize that the former are easier to use, the required degree of unclenching of their working jaws is carried out more quickly. As a rule, adjustable pliers equipped with adjustable mechanisms of both the first and second types have about seven fixed positions of the clamping jaws.

In order for pliers or any other tool of a similar purpose to be efficient in use, you should be very careful in choosing such devices. The first thing you need to decide on when choosing pliers, pliers or pliers is the technical problems for which you need such tools.

One of the most important parameters of the considered tools is the material from which they are made.

High-quality clamping devices are made of tool steel in order to provide them with high strength and, accordingly, reliability and durability. In this case, the working jaws of such devices, experiencing the greatest mechanical loads during use, are additionally hardened. To protect metal surface tools from the formation and development of foci of corrosion, use a special protective composition.

For ease of use, the handles of high-quality models of pliers and pliers are covered with a rubber or polymer compound. This coating not only prevents the tool from slipping out of the user's hands, but also protects against electric shock.

Tool size is another important parameter that those purchasing pliers should pay attention to. Consideration should be given to the characteristics of the parts and workpieces for which the tool will be used. So, if pliers are needed for cables of small diameter, it is better to choose more compact models of such devices, and for manipulation with plumbing pipes larger jigs should be purchased.

When choosing clamping tools, you should also pay attention to the brand under which they are produced. It is worth giving preference to products from reputable manufacturers, whose reputation is beyond doubt.

Meanwhile, the products manufactured well-known companies, can be quite expensive. That is why, in order not to overpay for branded products, you can choose tools, focusing not on the popularity of the brand, but on user reviews, for which it is enough to visit thematic Internet forums.

1, average rating: 5,00 out of 5)

Pliers are representatives of the pliers group. They are actively used in various spheres of human activity. They are intended for retrieving, grabbing, and biting metal products small formats.

Historical perspective

Initially, as a tool, the tongs were designed to extract red-hot metal blanks and molten metal crucibles from furnaces. They were also used by blacksmiths to hold various blanks during forging.

Archaeologists argue that the prototype of ticks - the tongs, which had a rod-axis - was invented in the Neolithic era. Then this instrument was made from burnt wood.

The first depiction of hand pliers tools dates back to the 6th-5th centuries BC. V bronze age blacksmiths used primitive tongs as clamps. They are currently found in the graves of blacksmiths as an inventory of burials, indicating that the deceased had a special and rather high social status.

Since ancient times, pincers are two castor beads, which are connected by a rivet that acts as an axis. This tool has been a testament to specialized blacksmithing skills for a long time. Together with the anvil and the hammer, pincers were an attribute of numerous ancient Greek and Roman gods-blacksmiths and lords of thunder (Thor, Vulcan, Hephaestus, etc.).

Much later, pliers began to be used for construction works, in plumbing activities, widely used in electrical work etc. Depending on the specialization and the principle of the device, various pliers are called side cutters, pliers, wire cutters, pliers, etc.

Construction, general purpose

Pliers are a versatile tool. He irreplaceable assistant both at home and at work. Their construction consists of two connected parts. Each represents two sections - a worker and a handle. Depending on the purpose for which the tool is intended, the ratio between the jaws (working part) and the handle can vary.

For example, standard carpenter's pliers have small, rounded jaws that provide a secure grip. They are very convenient for pulling out nails or removing worn-out fasteners.

Pliers are also a narrow profile or combination tool. Some models can be equipped with a nail pull, a screwdriver, and other devices that are located on the back of the holders.

Pliers: types of tools

Taking into account the fact that the pliers are a varied and variable tool, they are subdivided into different types that are applied in specific areas of activity.

The main difference between pliers (their varieties from the group of pliers) is in the form of a working surface. She determines their main purpose - blacksmith work, railway industry, electromechanical and electrical work, medicine-dentistry, etc.

Pliers, standard

It is a tool with long handles and short jaws. The latter are adjacent to each other for small area and have flat or pointed edges. Their main purpose is to capture details.

Blacksmith pliers are a tool designed to hold hot metal. Obligatory attribute - long handles with various shapes of jaws.

Railway workers use special pliers for dragging rails and sleepers. These are massive products designed to be operated by two or more people.

Pliers, plumbing

Plumbing pliers, or pipe pliers, usually have a serrated notch for easy gripping of the pipes. The lips are slanted. The swivel joint of the parts can be rearranged, which allows the clamping of pipes of various diameters.

Pliers

Pliers are a type of pliers that have a flat working surface... It is often provided with small notches. They are designed to grip and hold relatively small parts... For the convenience of working with parts, two such tools are sometimes used at once. They can have various forms of working surfaces, as a result of which they got their name: long-nosed pliers, platypuses, narrow-nosed pliers. Pliers are often provided with cutting edges designed to cut through the wire.

Combined pliers are also called pliers. Such tools include pliers equipped with a cutting edge for biting nails and wires, serrated notches for holding pipes, nuts and other cylindrical parts.

Round nose pliers

Round nose pliers (a type of pliers) differ from the previous type of tools in that they have a round section of the working parts (cone shape). They are designed to bend the wire in order to give it curly shape... Their design allows you to make bends of various radii. It is an irreplaceable assistant to jewelers. This type of mite has sponges different sizes, differing in thickness and length.

Nippers

Nippers are pliers in which the cutting working surface is adapted to bite reinforcement, nails, wire, etc. Cutting edges of the nippers different shapes... In this regard, they are divided into five main types: side (diagonal, side cutters), end (transverse), cable, stripping (pliers for removing insulation), end.

The most commonly used side cutters or side cutters. They are also designed for nibbling metal structures such as bolts, fittings, cables, cables, nails. They are especially distinguished robust construction, increased hardness of the working edges. Often, a design uses a series of pivot points to increase the compressive force.

Other types of ticks

Electrical tools also belong to the varieties of pliers tools. Among them are tools for terminals, crimp, designed to remove insulation, insulating (for work related to replacing fuses), current measuring, for connectors and cable glands, etc.

Photos of pincer tools of various shapes, where structural differences and additional devices are visible, are presented in the article.

Conclusion

Quality pliers are made from rigid tool steel. The working part can be additionally hardened to increase the strength characteristics. To increase the resistance of this tool to the effects of the aggressive environment in which they have to work, they are covered with special anti-corrosion compounds.

History shows that pliers made in the USSR were especially reliable. The demand for them among specialists and collectors is high and constantly growing.

Pliers (tool)

Joiner's pliers.

Electrical Clamp

Clamp meter - a device for measuring current and electric voltage in high-current and high-voltage lines without electrical contact with current-carrying wires. The head of the clamp meter is a split core made of ferromagnetic material with an inductor located on it. The device is equipped with insulating handles and a spring mechanism, which gives it a pliers-like appearance. During measurements, the current-carrying wire is surrounded by a core and, together with the inductance coil, forms a measuring transformer: the primary winding is the current-carrying wire, and the secondary winding is the inductance coil, to which an alternating current electric measuring instrument is connected.

Visors and awnings. External and internal stairs. Components