Scope of application
The main purpose of the tool is cutting material. They work on metal, cardboard, plastic, leather, cork, polymers, carpet, etc. The following types of work are performed with the help of electric scissors:
- installation of fencing made of corrugated sheets;
- installation of metal roofing;
- laying carpet, linoleum;
- cutting reinforcement;
- cutting metal blanks from sheet material;
- making holes in metal parts.
The list of tasks that the tool copes with is endless. When choosing a model, the type of design should be taken into account.
Tool structure
The design resembles an angle grinder in appearance. The body is made of ABS plastic. An engine is installed inside it. The front part is equipped with a multi-stage gearbox, which is protected by a metal casing. Its function is to convert the rotational motion of the spindle into reciprocating motion. Thanks to this, the equipment comes into action.
The working unit consists of a static element and moving parts. When metal is passed between them, its structure is destroyed along the cut line.
The design of electric scissors also includes:
- protective plate-shield;
- handle;
- electrical cable.
Design features of electric metal shears
Externally, electric shears for metal resemble a small angle grinder (grinder). Compact models have a narrow, oblong body that fits comfortably in the hand. Larger and more powerful options are more difficult to grasp in the palm of your hand, so they are equipped with an external handle. Impact-resistant structural ABS plastic is used to make the body of the electric scissors.
1. Multi-stage gearbox; 2. Working unit; 3. Protective plate;
4. Plastic housing with built-in electric motor; 5. Electrical cord.
Inside the plastic body of the tool there is an electric motor, and in the front part there is a multi-stage gearbox in a metal casing. In this unit, the rotational motion of the spindle is converted into reciprocating motion, as a result of which the cutting equipment is activated. The working unit operates on the principle of a hand-held mechanical tool: it includes in its design static and movable elements, when passing between them the sheet metal is cut.
Electric scissors for metal differ in the way they deform the material - there are knife models that cut the fabric similarly to household scissors, slotting and cutting machines that resemble a stationery hole punch in their work.
Working bodies of various types of electric metal shears:
Leafy
Splined
Die-cut
Advantages of electric shears for metal
We will talk about the functional features of specific modifications of electric scissors later, but now I would like to dwell on the advantages inherent in all these devices. So:
- Compared to manual metal shears, the electrical device does not require much physical effort, because the chopping or cutting process is performed automatically;
- for the same reason, productivity increases significantly;
- electric metal shears can be used for cutting fairly thick (up to 5 mm) metal elements, as well as for working with non-ferrous alloys, polymers and composite materials, the processing of which, naturally, is beyond the power of hand tools;
- with a power tool of this type you can easily cut not only smooth sheet metal, but also profile products (for example, metal tiles, corrugated sheets, etc.);
- The ergonomic design of electric shears allows you to produce complex curved parts, incl. and according to templates;
- thanks to the sharp cutting element and high speed of movement, the cut is accurate and clean;
- during the cutting process, the workpiece is not deformed or damaged;
- the safe design of the tool and the absence of the need for direct tactile contact with a metal product reduces the risk of injury during operation to zero.
Criterias of choice
The following criteria will help you avoid making a mistake in choosing the right electric scissors.
Manufacturer
Preference should be given to products from well-known brands. Large companies pay special attention to the quality of raw materials and manufacturing technology. In addition, manufacturers offer attractive warranties and service. When purchasing a tool, you should take a closer look at the following brands of scissors:
- MAKITA;
- BISON;
- Metabo;
- BOSCH;
- Forte;
- DIOLD;
- CALIBER.
What are there
Electric metal shears
Leafy . The tool cuts sheet metal with a thickness of 1.6-4.5 mm. Models of this type are distinguished by short blades, which gives maneuverability and increases the speed of work. The lower cutting element remains stationary. Thanks to this solution, the work area is securely fixed. The upper element moves up and down at high speed, making a neat cutting line without burrs.
Sheet models are recommended for working with thin sheets. In this case, it is allowed to make smooth turns and perform figured cutting. The light weight of the structure allows you to cut the material in weight. Tool work should always start from the edge of the workpiece.
Die-cutting . They have a cutting unit design that is different from other varieties. It is made in the form of a press. It moves along the surface of the material being processed manually in a given direction.
The components of the unit are a punch and a matrix. The first part is movable, its task is to pierce the canvas. The matrix is firmly fixed in the holder. Remains motionless during cutting. The principle of operation is based on cutting holes from which a cut is made.
Distinctive qualities of the cutting model: maneuverability, the ability to replace the cutting unit, obtaining an even cut, cutting embossed material. When processing metal, vibration is felt. If one of the cutter elements breaks, two parts of the working unit are replaced.
Rebar electric shears Makita DSC191Z
Reinforcement . Scissors of this variety are mobile tools. They are manual, hydraulic and electric. The latter option is characterized by high power, impressive size and heavy weight.
Some models weigh about 27 kg. There are also lightweight devices that are suitable for performing a small amount of work or for use on the farm. They can be recognized by their fixed head and D-type rear handle. Such electric shears easily cut reinforcement with a diameter of 4-20 mm.
The operating principle of the tool is based on clamping a rod between two knives. Thanks to hydraulics, they are pushed towards each other, due to which the reinforcement is cut off.
Splined . Structurally, this variety resembles sheet scissors. The difference is observed in the cutting unit. There is a stationary knife on top. It looks like a rectangular plate with a groove in the center. There is a movable cutting element at the bottom. During movement, it enters the slot of the upper knife, cutting off the blade.
When using this device, chips are generated. The gap between the knives must be adjusted taking into account the thickness of the material being processed. The features of the spline design are: high speed, the ability to cut according to patterns, and high-quality cuts. The downside is poor maneuverability and strong vibration.
Universal . This variety is suitable for cutting hard and soft materials of moderate thickness. The tool can easily cope with linoleum, metal sheets, drywall, carpet, etc. The universal models are distinguished by their compact size, light weight, and mobility. The scissors are battery-powered, which allows you to take them with you to any place where it is not possible to use network devices.
Class
All models of electric scissors are divided into two classes: household and professional. The former are distinguished by their affordable price, light weight, and low power. They have a small resource of work.
Professional models are considered more productive. They can easily cope with black steel up to 1 mm thick, stainless steel up to 0.5 mm. The cost of the tool is high, the weight of the structure is noticeable, which is due to the fact that it is equipped with a powerful engine.
Power type
Mains and battery models are available. The second option is characterized by mobility, which is important for roofing work. However, such scissors have limitations on operating time (before the battery runs out) and power.
Network models are considered more productive. But in the absence of a power grid, it is not possible to use them. There is also a risk of the cable being damaged by sharp metal edges.
If you need to cut sheets up to 1.5 mm thick, you can use cordless scissors. One charge is enough for a 70 m long cut. When choosing a mobile device, you should ask whether batteries are included in the package.
Power consumption, W
This indicator is identical to productivity. Electric models are available in a power range from 300 to 650 W. The more powerful the tool, the better it copes with thick material. When choosing such a device, you need to take into account that its weight will be significant.
Number of strokes, rpm
The speed of the cutting process depends on this parameter. The higher it is, the more accurate the cutting line is. Lightweight, lightweight tools work cleanly and quickly. More powerful equipment is slow and sloppy.
Electric models have the option of adjusting the stroke rate. Thanks to this, you can customize the scissors to cut specific materials.
Maximum material thickness, mm
The parameter determines the output power of the scissors and their design features. It reflects the effectiveness of the scissors. The indicator is indicated primarily for two types of metal - steel and aluminum. The thickness of a soft alloy is always higher than a material with a harder structure.
Minimum cutting radius, mm
This parameter determines the maneuverability of the scissors. Almost every tool specification specifies the minimum radius. But it is worth considering that the value does not always correspond to reality. You should also take into account the features of the design types:
- die-cut models can rotate 360 degrees;
- with sheets, you can start cutting only from the edge of the sheet;
- Splined blades are comfortable to work with when cutting narrow workpieces.
Weight, kg
This parameter is taken into account when performing work in difficult conditions. Lightweight structures can be operated with one hand. Some models weighing more than 2 kg have an additional handle that allows you to hold the scissors with two hands.
The more powerful the tool, the heavier its weight. It is not easy to manage, but it saves operating time and productivity.
Consumables – knives for electric scissors
What's included
When considering options, it is worth paying attention to the configuration of the scissors. So, some battery models are offered without batteries and charging. Manufacturers can also equip the product with additional equipment, batteries and other spare parts. Eg:
- case;
- additional handle;
- battery;
- matrix;
- additional knife;
- punch.
A variety of electric shears for metal
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Ms. Electric Eyebrow Shaping Knife Automatic Eyebrow Artifact Shaving Trimmer Hairdressing Vibrator RUB 62.00 Oscillating knife tool Vibration cutting head Oscillating knife cutting tool for car foot mat carpet to Sheet metal is cut on vibrating shears with two short flat knives, of which the upper one vibrates quickly in a vertical plane near the lower stationary knife fig. The number of strokes per minute of the upper knife before starting work on the scissors, adjust the position of the upper and lower knives to the thickness of the sheet being cut so that when the upper knife is in the extreme upper position, there remains a gap between it and the lower knife equal to 0.25 of the thickness of the sheet being cut.
When knives become dull, sharpen them only on the back side. Main technical characteristics of electric scissors The most important parameters that you should pay attention to when choosing electric scissors are: Power source. Depending on its type, the tool is divided into mains and battery. The higher it is, the better. But remember that powerful models are quite heavy and have a larger turning radius. Knife stroke frequency.
What are electric scissors?
This parameter affects the speed of cutting and its cleanliness. The high speed of the cutting surface ensures accurate cutting. The value of the maximum possible thickness of the material that can be processed. Launcher design. Protection against injury.