Shears for cutting metal tiles

Slotted

They consist of two knives that take part in the metal cutting process. It is somewhat reminiscent of the previous type, only the active working element does not cut out fragments of metal, but cuts them out in the form of shavings, which are removed by the nippers built into the structure.

Advantages of electric slotted shears:

• Cutting - perfect quality, without further surface treatment;
• You can perfectly, accurately, accurately carry out curly cutting;
• Easy to work with both profiled and smooth metal;
• You can start cutting metal from anywhere;
• Ideal for cutting holes;
• Can be used where it is impossible to reach with another tool (hard-to-reach places);
• It can be used both during installation and finishing works.

There are a few disadvantages:

• Able to cut thin metal up to two millimeters thick;
• The turning angle is large enough (there is a high risk of moving off the straight line);
• The movable cutting element wears out quickly.

There are models of battery operated electric scissors. Their huge plus is that they allow great maneuverability in the process of work, eliminate the risk of damage to the electrical cord from the metal edge. There is only one minus in this kind of instrument - fast battery discharge, short operating time.

In conclusion, it is important to note that there is a huge assortment of goods on the market, various models of electric, battery shears from various manufacturers, differing in both price policy and technical characteristics.

Answer the question - "which electric shears are better?" you can carefully consider your financial capabilities, duration, scope of work for which you need this kind of tool.

What methods can be used to cut metal tiles?

For this material, you can use different tools:

a hacksaw for metal products, which has an affordable cost, but to work with it requires a special workbench, and it is also possible to achieve even cuts with direct cutting; The main types of scissors Different types of scissors can be selected for cutting sheets of metal tiles. Each variety has its own characteristics, structure and principle of operation. The main varieties include: Nibblers for metal tiles. They are versatile products, since with their help both high-quality smooth cuts and beautiful curly cuts are obtained. The length of the matrix holder in such a tool can be different, and it depends on this parameter how maneuverable the scissors will be. They have a simple principle of operation, since the punch moves in them, and each of its moves is accompanied by the fact that a small piece is cut on the sheet. They can be used not only when working with metal tiles, but also when cutting welded products, pipes or profiled sheets.
This tool is effectively used for cutting sheets of metal tiles. In terms of operating speed, it is comparable to a grinder, but at the same time it does not heat the protective layer of the material, and also with its help curly and unusual cuts can be made

No defects or burrs are left on the edges, so after cutting, there is no need to pay attention to additional processing of the sheets.
The advantages of using a nibbler include:

small size of the tool;

the protective layer on the sheets of metal is not damaged;

cutting can start not only from the edges, but also from the middle of the sheets;
the process is implemented in a short period of time;
slices can be not only rectilinear, but also curved;
during operation, there are not too many shavings, which are easy to clean.

Important! Nibblers can vary in power, so it is possible to choose a product that ideally matches the existing thickness of metal sheets. There are three major varieties of these scissors:

There are three major varieties of these scissors:

With a bottom cut. Strikes on the sheet are made due to the fact that the punch moves up. The matrix is ​​subjected to a compressive load, so it certainly has a pendulum support. The punch has a rounded shape. The disadvantages of this type include the low resistance of the punch to different loads. Read also: Welding metal products

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Important! Modern models of nibbling shears have an electric motor with a 7 mm stroke, which guarantees high quality and efficiency of work. Related videos:

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In order to competently perform the work with the use of nibbling shears, the recommendations of specialists are taken into account:

in order to reduce the load on the cutting element, the scissors themselves are installed directly on the sheets of metal tiles;
if you need to make a trapezoidal cut, then you need to choose the right matrix;
for convenient cutting, you must constantly use the handle, which is equipped with any model of nibbling shears;
during operation, it is the punch that strikes the sheet, which guarantees the cutting of the profile, such an action certainly leads to the appearance of metal shavings;
the shape of the punch depends on the section of the sheet and the desired result of the work;
during work, it is important to constantly monitor that the matrix is ​​motionless and securely fixed;
nibbling arising from cutting must be pushed into the holes in the die.

Thus, electric shears for cutting metal tiles are considered the ideal solution. They have many advantages and are easy to use.

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There are many types of scissors that are easily used to cut sheet metal sheets. They provide an even cut, do not violate the integrity of the protective coating of the material, have an acceptable cost and are easy to use. You can start work both from the edges and from the middle of the sheet. Due to the simplicity of work, even a beginner can cope with this process, getting the perfect cutting result.

Cutting metal tiles seems to be a difficult and responsible business, especially for those who have not previously encountered such work. If you do not have the proper experience in this area, then difficulties will arise not only in the process of cutting, but also in choosing a tool to do this work.

Varieties

According to the principle of the cutting mechanism, the following types of electric shears are distinguished:

Leafy

The working unit of the sheet shears is arranged by analogy with the working unit of the household: two knives, one of which is rigidly fixed on the support, and the other has a free stroke. The product enters the gap and goes to rupture under the pressure of the upper knife. The size of the gap can be adjusted by adjusting the shears to work with workpieces of different thicknesses. Ideal for rough cutting of large-sized products at their location (for example, for dismantling metal structures).

Slotted

Also, like sheet, they have two knives:

Upper - static, U-shaped with two chamfers.

The lower one is movable, which fits into the groove of the upper one.

In the process of movement of the lower knife, a strip 3-5 mm wide is squeezed out of the metal workpiece. In this case, the cut edge is perfectly flat, without burrs. Slotted scissors are most popular with ventilators who use them to cut pipes and ducts.

Nibbling

Nibblers are similar in principle to a punching press, which is why they are often referred to as punching shears.

The main elements of their cutting head are:

• Matrix. A static part in the form of a circle or square (a circle is used for thin-sheet blanks up to 3 mm thick, a square for thicker ones).
• Punch. Movable die-shaped punch. When the motor is started, the punch performs back-and-forth movements, cutting a continuous chain of holes in the workpiece, forming a shear line.

Nibblers are indispensable in auto repair, roofing and ventilation work. They are ideal for cutting profiles and making radial cuts.

Working principle and design of the nibbler

By the type of bed, the equipment under consideration is a kind of single-column open presses, and is distinguished by the following kinematic features:

• a relatively large range of strokes per minute (up to 3500);
• small amount of knife movement (up to 10 mm);
• the presence of replaceable guides for positioning the workpiece being processed;
• driven swivel head, which is located on the slider.

Otherwise, the components of the electric nibbler circuit are traditional: a motor, a V-belt drive (for high-speed models, a direct drive is provided), an eccentric-type main shaft and an actuator crank mechanism. Naturally, there are slider guides and a work table, which are located on a frame welded from steel sheets.

The main difference lies in the design of the slider-connecting rod assembly. For nibbling shears, the connecting rod of the unit is adjustable, and, as for crank presses, the adjustment is carried out by changing the length of the connecting rod using a special worm gear that rotates the threaded head. This regulates the movement of the equipment during the operation.

The design of the cutting part of the tool

In addition to changing the stroke, the nibblers have the ability to change the number of strokes, i.e., to adjust their productivity. For this, manufacturing firms implement one of the following design solutions:

1. A stepped pulley is installed on the eccentric shaft, onto which the V-belt transmission belts are thrown. This method is suitable for low-power units, as well as for non-powered punching shears designed for cutting metal. The number of grooves on the pulley for drive options is no more than two, otherwise the operation of the shears will be unstable. Manual units can have a larger number of steps.
2. An eccentric sleeve is mounted on the main shaft, by moving it along the axis of the shaft, the height of the stamp space can be changed. It is almost impossible to make such a sleeve in artisanal conditions, therefore this option is available only in factory-made models.Its advantage is the possibility of a multistage change in the amount of movement, since the number of control positions is determined by the number of corresponding slots in the eccentric sleeve.

Cutting tool

In order to compensate for the inertial components of the forces, the sliders of the high-speed nibbler are equipped with spring balancers.

Electric nibblers are generally not equipped with traditional clutch-brake systems. With a significant number of strokes, rigid couplings will act unstably, and the acceleration-deceleration period can be very significant. The same goes for band brakes. For the pneumatic friction drive, an additional compressed air supply is required. Therefore, they are limited to the installation of conventional push-button stations on the equipment, and the start and stop of the scissors is performed using an electric motor.

How to choose manual professional metal scissors

Considering different options for a tool, you should immediately decide which is better to buy metal scissors - right or left. What is the difference between the fixtures can be understood by looking at how the tool functions. Right-handed scissors make a straight or curved cut from left to right, and left-handed scissors cut from right to left. There is a separate type of tool in the form of straight scissors for metal. They are used to make straight cuts. These scissors have a yellow handle.

Before choosing manual metal scissors, you should familiarize yourself with the options for making the tool. Forged, cast and composite models are available depending on this criterion. The first type of tool is very durable and expensive. Sharp cutting bases provide fast and high-quality cuts in any sheet metal, including aluminum and thick steel. The handles of the product are made of durable polyamide.

For the manufacture of cast scissors, a less durable material is required than for the creation of forged products. They are characterized by low cost, fragility, but they work quite efficiently.

Manual metal shears can be forged, cast and composite

The split scissors are equipped with a lever mechanism, which ensures an even pressure on the cutting surface. The handles are opened thanks to a spring-loaded reverse-action mechanism, which makes the operation of the scissors simple and convenient. The blades of such lever metal scissors are made of durable steel, and the handles are made of soft plastic.

Tin hand shears equipped with short blades and long handles are used to cut mild steel and low carbon tin. Tin models make a straight cut with a smooth bend. You can also make circular patterns on sheet metal.