A circular saw. Types and device. How to choose and features

Circular saw, or a disk saw. A tool for cutting various materials by sawing a disk with teeth. It is mainly used to perform carpentry and carpentry work.

Manual devices consist of a case with two handles in which an electric motor is located. A gear disk is fixed on the engine shaft of the engine. Part of the disk protruding from the case is closed by a casing. During sawing, the protective casing is pushed by the workpiece. Upon completion of sawing, the casing is returned back by the spring.

circular, stationary, choose, disc

A stationary saw has a table instead of a compact case. The engine is fixed under it so that part of the saw disk goes through the slot in the countertop. At the same time, the disk itself can be located both on the shaft of the motor, so be associated with it through the belt gear.

Differences between manual and stationary saws in terms of convenience and functionality

Portable manual and desktop stationary disc saws differ among themselves in terms of convenience of use when performing various types of work. For some tasks, one tool is preferable, and for others another. Therefore, no variety has a clear advantage over another.

Features of a desktop circular

Stationary circular saw is equipment for the workshop. It is applicable when performing a large volume of the same type of work. The presence of a table, as well as the use of various auxiliary devices with it, allows you to achieve high accuracy when cutting.

  • Cutting small plates of sheet materials.
  • Cut the boards, rails, timber.
  • Sample of a quarter.
  • Patch.
  • Remove the chamfer.
  • Saw wood.

To make such an extensive volume of work on the circular table, it is required to use in addition to a parallel emphasis on a number of other devices. At the same time, the functionality of the table largely depends on the size of its countertop. If the material is not placed on it, then many types of work become excessively complex or almost impossible. In addition, since for cutting the workpiece should be raised to the table, two operators have to perform work with large.Sized lumber.

Table circular saw can be used to harvest firewood. With its help, thin wood trunks and branches into short blocks are sawed. For these purposes, the cheapest tool is usually bought, which does not support the function of adjusting the disc leave, changing its angle.

Features of a manual circular

Hand disk saw is a mobile tool. It is light, therefore it is used on construction sites, where there is a need to produce accurate sawing.

Mobile circular saw takes up little space, it costs cheaper. Due to the presence of parallel stops with its help, you can dissolve long lumber along. In this case, it is possible to obtain a mowing cut. In general, such a tool can work with much larger format blanks than it is possible to process on a circular table. The mobile saw can be raised to the roof to file rafters or beams in place.

Applying the setting of depth of the cut, you can make a sample of a quarter or long groove. However, the implementation of such work is limited by the capabilities of the lateral emphasis. Despite many restrictions in terms of accuracy and functionality, disk mobile saws are the best. The possibility of modernization speaks in their favor. In particular, they can be installed on a homemade table, thereby turning into a full.Fledged stationary machine. Having finalized the circular in this way, it can be used for a more accurate cut, manufacturing the spike-puzzle connection, remove the chamfer on the workpieces.

Technical parameters of circulars

Various devices of saws, even with a similar constructive structure, still differ among themselves in a number of technical features. Each parameter is important, since it directly affects the possibility of performing certain tasks.

  • Disk diameter.
  • Power.
  • Adjusting the depth of the disc and tilt of the disk.
  • The presence of a smooth start.
  • The number of revolutions.

The disk is directly involved in the cut part of the saw. It depends on its diameter how thick the part can be cut with a specific tool. This is extremely important if it is planned to use it for the cut of thick timber, for example, beams or wooden pillars for fences. The depth of the corner grinder was slightly less than half of the diameter of the disk.

circular, stationary, choose, disc

Table circular saws can have a disc diameter of 400-500 mm or more. Such equipment is specialized and used for cutting thick lumber, as well as cuts on the boards. The most popular desktop models are rarely equipped with discs of more than 210 mm.

As for the manual circulars, the diameter of their saw disc is mainly up to 210 mm. At the same time, such a tool is equipped with a heavy powerful engine, which makes it carrying and using it complex. For example, a saw with a disc 335 mm on average has a mass of 13 kg. At the same time, a tool with a saw of 165 mm weighs 3.5 kg. Most often, a mobile circular saw is equipped with a dial with a diameter of 160-190 mm, which gives the necessary level of maneuverability when carrying and working. The tool with such parameters saws deep enough, while it is quite lifting.

Power is one of the defining criteria when choosing a tool. However, when using a new sharpened saw disk, even with a low.Power motor, it will be able to saw better than a powerful tool with worn equipment. Thus, the lack of power of torque can be compensated by consumables. It is necessary to decide in advance. Overpay for a powerful circular once, or then sharpen the discs more often.

A circular saw with a motor up to 800 watts can be used to work with plywood, thin slats and boards. Tool with engines 800-1200 W is the most universal. He easily cuts almost any lumber, but when sawing thick blanks, he does it slowly. When choosing a desktop circular, it is better to stop on a motor from 2 kW. In this case, it will have a power supply for any type of work. At the same time, its weight does not matter, since the table is always in the workshop.

The main characteristics that cost first of all

The most common models on the market have engine power from 0.8 to 2.2 kW and revolutions 4.5-5.5 thousand per minute, weight varies from 3 to 7 kg. When choosing these 3 parameters are the most important, they need to pay attention to them first.

Power

The higher the power, the better. But it should be remembered that the greater the power, the higher the cost, weight and consumption of electricity. Therefore, most often users dwell on medium.Power options, from 1.0 to 1.6 kW. The exception is cases when the tool is bought to solve not entirely standard, “average” problems. For sawing only thin or thick material. In the first case, the lowest option is enough, in the second, on the contrary.

The council for the performance of the cut stated by the manufacturer of the depth (for example, 5.5 cm) the power of the installed engine should be grabbed by definition. But a more powerful option drinks faster, with less effort and load, which increases performance and increases the life of the tool.

Disk rotation frequency

The higher the speed of rotation of the disk, the more accurately and cleaner it drank. However, according to the laws of physics, “increase in speed, reduces strength”. Therefore, with the same engine power, a more “fast” disk rotates with less force.

The scatter of the most popular models and manufacturers is small, from 4.5 to 5.5 thousand rpm, so there is no particularly noticeable difference in work. Nevertheless, experienced experts notice the difference in the speed of rotation of the disk.

Council for thin, clean carpentry work is preferable to higher rotation speed. For construction work is better suited, with greater strength.

The depth of the cut

The indicator directly depends on the distance to which the saw disk comes out of the bed (support platform) at right angles. With inclined sawing, the depth decreases. For example, with a tool with a depth of 54 mm depth, you can saw a beam with a cross section of 100 mm if you do a drink on both sides of the beam.

Changing the angle of inclination

Almost all disk saws of this type are equipped with this function (from 90 to 45 degrees). When choosing, you should pay attention to the quality of the execution of the node. The screw clamps should be quite reliable, better metal (plastic clamps on budget models are often broken off). The turn of the rotation of the rotation at the angle should be made of a sufficiently durable metal so as not to bend.

Saw disk

In practice, each manufacturer produces saws for discs of its size. It is not always possible to choose the right disk from the saw of the same power of another brand. Coincidences are, but not always.

The differences in the planting and external diameters of only a few mm lead to the fact that the “alien” disk is not suitable.

Council when choosing discs should avoid teeth with an intricate, figure or complex shape. Such discs do not sharpen, or sharpen on expensive and rare special equipment.

As a result, instead of sharpening and further use, they have to be thrown out and buying new. Whereas the teeth of the standard shape can be undermined, several times increasing the service life.

There are a lot of information on the saw disk, the numbers have the most important. One. Company manufacturer. 2. Model and type of disk. 3. Dimensions. 4. Type of tool used. 5. Type of sawn material. 6. Disk size. 7. The number of teeth. Eight. Landing diameter. Nine. Maximum turns. Ten. Direction of rotation.

On the design and technical parameters of the tool

The circular saw is an electric tool, which is manually carried out. To do this, the design has handles through which the master holds the tool during the manipulation of wood cutting. The main constructive elements of the device in question are:

  • Bed. A flat platform that glides over the surface of the processed material
  • A drive with a mount for fixing the cutting element. An electric engine is used as a drive mechanism that can develop a high speed of rotation due to the gearbox
  • Handles. As a rule, two of them, through which holding, direction and movement of the tool occurs
  • Nozzle. A hole through which the sawdust is removed
  • Guide elements
  • Hinged blocks. Devices that allow you to set a slot from a given angle to the corresponding surface

The speed of rotation of the cutting disk is 5,000 rpm. The size of the rotating disk is 600 mm, and the power of the electric motor is provided from the 220V network. An important role is played by the power of the circular saw, the value of which, depending on the model of the tool, varies from 800 to 1200W, from 800 to 1200W. The maximum thickness of the cut materials is 4.5 cm.

An important element of the device under consideration is a protective casing, inside of which there is a rotating disk. The device has a simple design, which is reflected positively at its cost. You can purchase a circular saw in the cylinder online store, but for starters, let’s find out what types of tools are, and how they differ.

Circulation saw selection criteria

When you decide on the type of circulation saw, you can proceed directly to the choice of its working characteristics, on which the performance and convenience of work depends.

Power

Traditionally, the power of the engine of the circular saw is tied to the diameter of the saw disk. The larger the disk, the more watts the circular engine should have. But here healthy competition comes into the game. In the struggle of manufacturers for their buyer, they can equip approximately the same engines of various capacities in characteristics of the model.

Here you need to understand a direct dependence. The more powerful the engine, the greater force is transmitted to the place of fastening of the disk to the shaft. This means that a more powerful electric motor allows the saw to work more stable, it is better to withstand the speed of the disk speed, process more dense materials and, in general, work longer without rest.

The disadvantages include only the probability of getting a tool with a disk mount, which was originally designed for less weak models. When buying, you need to pay attention to fasteners. Ideally, a more powerful engine should be at least massive, although a lot depends on the quality of materials. It should also be borne in mind that excessive power is additional expenses. For purchase and maintenance.

Conditionally, circular saws are divided into three classes in terms of engine power:

Up to 0.8 kW. Manual, for sawing small blanks.

From 0.8 to 1.2 kW. Most household devices that cope with almost all the work on the house.

Over 1.2 kW. Professional universal saws.

Which of these tools to choose depends solely on the planned volume of work.

Disk rotation frequency

In most cases, the larger the speed of the disc of the circular saw, the easier it is to work with it. The higher the speed, the better the following characteristics:

  • Less likely to jam the disk in the workpiece.
  • Tight materials are more easily processed.
  • Need a smaller torque.
  • Cleaner fishing line for cutting.

There are enough of its nuances. For example, the purity of the cut also greatly depends on the shape and number of teeth on the disk, but mostly the dependence of this. Additionally, it should be borne in mind that the high speed of rotation is an elevated temperature at the cutting point, which means materials like plastic or laminate can be with the melted edges after sawing. If it is planned to work with such materials, then the best way out will find a circular saw with an adjustable number of rotation of the disk.

6pc HSS Circular Saw Blade Set Unboxing Testing | cutting different materials | Dremel | Redh tech

Disk diameter

Sometimes this characteristic is confused with the diameter of the landing hole, but the latter is usually not so important and shows only whether a certain disk is suitable for the seat of the saw. The full diameter of the disk is fundamental for the circular saw in general, because it is under it that all other characteristics are selected.

The dependence here is very simple. The larger the diameter of the saw disk, the more powerful and with the greater value of the torque should be the engine. This affects the start speed, smooth operation and reduce the probability of jamming. The more powerful the engine, the more difficult it should be the protective and stabilizing operation of the saw. In turn, all this leads to an increase in the weight, size and cost of the circular in general.

All these difficulties are needed and important, since the larger the diameter of the disk, the more thick it can cut in one pass.

Supporting plate and depth of cut: straight and at an angle

The saw depth exactly indicates how much disk can be immersed in the workpiece. Nobody gives the exact classification here, but it is conditionally customary to share saws on the following depths of the cut:

  • 4-5 cm-the initial, least powerful class of tools.
  • 5-6.5 cm-representatives of the universal “golden mean”.
  • 6.5-14 cm-heavy, professional devices.

The saw depth is far from always determined exclusively by the difference between the outer radius of the saw circle and the landing hole. To a greater extent, you need to look at how much the disk is for the plane of the supporting plate, since this part additionally “eats” 1-1.5 cm, and normal work without it is simply impossible. It is also necessary to take into account the ability of the circular saw to make cuts at an angle, which is again determined by the design of the supporting plate.

circular, stationary, choose, disc

If the circular saw allows you to perform a cut at a variable angle, then in the characteristics the manufacturer usually indicates the cutting depth for 90 ° and 45 °.

An example of adjustment and cut at an angle look at

When selecting a circular saw with the possibility of adjusting the sawing angle, it is necessary to pay special attention to the quality of the supporting plate and the fasteners and graduations located on it. The main signs of quality is the simplicity of changing positions, the ease and reliability of clamp fixation, as well as the absence of backlash. Not all manufacturers are able to completely get rid of them, but if the “backlash” of the supporting plate of the new instrument after fixing all the “lambs”, then it is worth thinking about finding an alternative.

The material of the supporting slab is more often cast light alloys, but not uncommon and stamped steel platforms. The former is easier and well hold the shape, and the latter are more resistant to blows.

What is the difference between the end saw and the circular

Porotovka and circular. The saws are very popular, and in the carpentry and furniture workshops you just can not do without them. However, often inexperienced users do not even know that in essence. These are different tools. The fact is that outwardly the saws are similar, and the function is performed by the same. I drank blanks with a disk. The disk of both saws was flat, equipped with teeth on the outer edge. It is installed on the axis of the electric drive. The work is that the disk rotates and does a drink in a tree, plastic, laminate, aluminum.

That’s all similarity. Now let’s talk about the differences.

  • A circular saw. Manual or stationary device. Working with a manual circular, the user draws a saw along the line of cutting of the material. In a stationary circular, the workpiece is pushed using parallel emphasis, achieving the size of the width we need. This is made cutting of the rails, cut off in size excess. The board with a circular is cut along the wood fibers and across them. The cutting head with the disk leans in both directions, so that I drank under the slope can also be made. Although, it must be taken into account that the maximum cut depth is significantly reduced (1.2-1.5 times). The circular saw has the ability to regulate the depth of sawing, which allows you to make a selection of grooves in the workpieces.
  • The end of the saw has another name. Pendulum. Its difference is that the sawing circle sways with the electric drive, recalling the measured swing of the pendulum. The installation is assumed motionless. On the table, workbench or even on the floor. In this case, the saw is firmly fixed using clamps or bolts. The ending engine along with the cutting disk operates in three axes. Special accuracy is given to the corner of rotation. The degree scale is extremely accurate and has no errors in very expensive models and indicates the smallest degree of turning.

Another ends of wooden affairs is called “Usovka”, mean by this that she “saws on the mustache”, that is, by the precisely given angle. Thanks to the ends, joiners and furniturers receive a neat connection of parts at an angle. Without gaps and curvature. “Sawing on the mustache”. This is the ending of the edges.

So, what do we get when comparing these two saws, endings and circular?

  • The same principle of cutting. Both with a disk installed on the electric drive axis. The slope of the cutting head with the disk is possible in both saws. Sawing along and across wood fibers. Too.
  • The cutting method is different. The end and the workpiece is fixed on the surface, and in the circular we either “drive” along the cut (manual) with our hands, or pushing the workpiece (stationary);
  • Possible cut: in the circular along and across the fibers, in the end.Only across;
  • The width of sawing. The circular saw has no restrictions (we just “drive” the disk as much as necessary), and the end of the end of the end width of the ending depends on the size of the saw disk.

It turns out that in the workshop you need to have a circular saw (for the sawing of long details) and the end. For the exact “sawing on the mustache”. Sometimes masters buy universal equipment: end and circular saw for a summer residence in one machine. Such a combined saw has the upper table (above, above the engine and disk). It is good that the upper part of the disk saws straight long cuts, and the lower. Cutting into the exact degree of angular pruning of the edges of the parts.

Types and features of saw discs

Important characteristics that determine the performance of the saw disk are:

  • The number of teeth. Their number on the disk can vary from 10 to 90 pcs. The more teeth on the disk, the lower the speed of processing the product, however, the cut turns out to be cleaner and neat, which does not require finish processing.
  • The inner diameter of the disk. This value characterizes the diameter of the sawing of the saw circle to the center of the equipment or a fixation pin located on the saw device.
  • External diameter. The larger the diameter of the disk, the deeper it drank, but less the speed of rotation of the canvas. The external diameter should not be larger than the size of the upper protective casing.
  • Disk thickness. Thin saw circle, with a thickness of 3.2 mm. Used for the saw of soft wood and thin materials. If the thickness of the disk is greater than this value, then it can be used with thick and rough raw materials. They are more durable, wear.Resistant and less susceptible to deformation.
  • The angle of inclination of the teeth. If the cutting edge is rejected towards the back of the canvas, then such an angle is considered negative. The opposite is oriented to teeth that have a positive inclination, the values ​​of which can vary from 5 (standard) to 20 (aggressive) degrees. There is also a zero angle of inclination. Such discs are designed for sawing metal materials.
  • The shape of the teeth. The concentrated triangular tooth is used to work with laminated wood. Flat teeth with chamfer is used for construction wood and products from it. Flat teeth that have the shape of a trapezoid. Metal sawings.

Combined models are popular, since they can perform transverse and longitudinal sections at the same time, without changing the disk.

The design features of the saw saw directly affect the process, final result and quality of work.

Device, principle of operation and the use of circulation saw

At first glance, the device of the circular saw is as simple as possible. A powerful engine on the shaft of which a cutting metal disk is put on. In the case of stationary tools, the engine can be separately and transmitted an effort to the working shaft with a belt through the pulley system, but manual tools, which are among the domestic majority, are made in one case.

Difficulties in the device add the need to use high.Quality materials, strict observance of centering parts, plus the maintenance of serious safety measures. The saw disk rotates at high speeds, so the neglect of any of the listed points will lead at best to breakdown of the tool.

As a result, an impressive amount of mechanical-electronic protective and blocking devices is added to the engine and the cutting circle, the purpose of which is to instantly stop and de-energize the tool if something went wrong.

The principle of operation of the circular saw is understandable from its design. A rotating disk with teeth cuts the board on which the tool itself stretches. In the case of a stationary saw, everything happens the opposite. The board stretches through a circle mounted on the bed and is divided into two parts.

There is one important remark to the use of a circular saw. It is not suitable for curly cutting and is intended to saw the boards and other materials only in a straight line. There are models with an additional graduation of the leading sole, which allows you to put the disk not strictly perpendicularly sawn the surface, but at a certain angle, but at the same time the saw is also carried out strictly in a straight line

Upper main protective casing.2. Power button.3. Blocking button of turning on.4. Laser switch button.

Support handle.6. Building with an engine.7. Laser pointer.Eight. The adjustment of the corner drank.

Saw disk.Ten. Lower loaded casing.Eleven. Support sole.

Manufacturers

SILE INTERSKOL

One of the leaders of the domestic instrument, including manual circular saws, is the scientific and production. In his developments, Interskol incorporated all the best that was developed by the leading at the USSR Scientific Center for Electro and Vibro-tool, and advanced world brands.

The result was an excellent, inexpensive and very reliable hand tool. The main production capacities are Spain, Russia, China. Shanghai, China. Jinghua.

The company’s assortment has a whole tool line with a capacity of 800 to 2000 watts equipped with various electronic components to facilitate the start of electrical equipment. The tool is intended for both household and professional use.

circular, stationary, choose, disc

Bosch saw

International concern that produces products of various directions from household kitchen devices to spacecraft components. The main activity in the production of a hand tool is based on the use of the latest achievements of technology connected with German accuracy and reliability.

The tool presented by the company is available in various configurations from 600 to 2200 watts, with a saw disk size from 65 mm to 235 mm. The main line of models is made by models for professional use.

A circular saw. Types and device. How to choose and features

Circular saw, or a disk saw. A tool for cutting various materials by sawing a disk with teeth. It is mainly used to perform carpentry and carpentry work.

Manual devices consist of a case with two handles in which an electric motor is located. A gear disk is fixed on the engine shaft of the engine. Part of the disk protruding from the case is closed by a casing. During sawing, the protective casing is pushed by the workpiece. Upon completion of sawing, the casing is returned back by the spring.

A stationary saw has a table instead of a compact case. The engine is fixed under it so that part of the saw disk goes through the slot in the countertop. At the same time, the disk itself can be located both on the shaft of the motor, so be associated with it through the belt gear.

Differences between manual and stationary saws in terms of convenience and functionality

Portable manual and desktop stationary disc saws differ among themselves in terms of convenience of use when performing various types of work. For some tasks, one tool is preferable, and for others another. Therefore, no variety has a clear advantage over another.

Features of a desktop circular

Stationary circular saw is equipment for the workshop. It is applicable when performing a large volume of the same type of work. The presence of a table, as well as the use of various auxiliary devices with it, allows you to achieve high accuracy when cutting.

  • Cutting small plates of sheet materials.
  • Cut the boards, rails, timber.
  • Sample of a quarter.
  • Patch.
  • Remove the chamfer.
  • Saw wood.

To make such an extensive volume of work on the circular table, it is required to use in addition to a parallel emphasis on a number of other devices. At the same time, the functionality of the table largely depends on the size of its countertop. If the material is not placed on it, then many types of work become excessively complex or almost impossible. In addition, since for cutting the workpiece should be raised to the table, two operators have to perform work with large.Sized lumber.

Table circular saw can be used to harvest firewood. With its help, thin wood trunks and branches into short blocks are sawed. For these purposes, the cheapest tool is usually bought, which does not support the function of adjusting the disc leave, changing its angle.

Features of a manual circular

Hand disk saw is a mobile tool. It is light, therefore it is used on construction sites, where there is a need to produce accurate sawing.

Mobile circular saw takes up little space, it costs cheaper. Due to the presence of parallel stops with its help, you can dissolve long lumber along. In this case, it is possible to obtain a mowing cut. In general, such a tool can work with much larger format blanks than it is possible to process on a circular table. The mobile saw can be raised to the roof to file rafters or beams in place.

Using the setting of depth of the cut, you can make a sample of a quarter or long groove. However, the implementation of such work is limited by the capabilities of the lateral emphasis. Despite many restrictions in terms of accuracy and functionality, disk mobile saws are the best. The possibility of modernization speaks in their favor. In particular, they can be installed on a homemade table, thereby turning into a full.Fledged stationary machine. Having finalized the circular in this way, it can be used for a more accurate cut, manufacturing the spike-puzzle connection, remove the chamfer on the workpieces.

Technical parameters of circulars

Various devices of saws, even with a similar constructive structure, still differ among themselves in a number of technical features. Each parameter is important, since it directly affects the possibility of performing certain tasks.

  • Disk diameter.
  • Power.
  • Adjusting the depth of the disc and tilt of the disk.
  • The presence of a smooth start.
  • The number of revolutions.

The disk is directly involved in the cut part of the saw. It depends on its diameter how thick the part can be cut with a specific tool. This is extremely important if it is planned to use it for the cut of thick timber, for example, beams or wooden pillars for fences. The depth of the corner grinder was slightly less than half of the diameter of the disk.

Table circular saws can have a disc diameter of 400-500 mm or more. Such equipment is specialized and used for cutting thick lumber, as well as cuts on the boards. The most popular desktop models are rarely equipped with discs of more than 210 mm.

As for the manual circulars, the diameter of their saw disc is mainly up to 210 mm. At the same time, such a tool is equipped with a heavy powerful engine, which makes it carrying and using it complex. For example, a saw with a disc 335 mm on average has a mass of 13 kg. At the same time, a tool with a saw of 165 mm weighs 3.5 kg. Most often, a mobile circular saw is equipped with a dial with a diameter of 160-190 mm, which gives the necessary level of maneuverability when carrying and working. The tool with such parameters saws deep enough, while it is quite lifting.

Power is one of the defining criteria when choosing a tool. However, when using a new sharpened saw disk, even with a low.Power motor, it will be able to saw better than a powerful tool with worn equipment. Thus, the lack of power of torque can be compensated by consumables. It is necessary to decide in advance. Overpay for a powerful circular once, or then sharpen the discs more often.

Homemade Circular Sawmill, 52″ Blade Rips Through a Log

A circular saw with a motor up to 800 watts can be used to work with plywood, thin slats and boards. Tool with engines 800-1200 W is the most universal. He easily cuts almost any lumber, but when sawing thick blanks, he does it slowly. When choosing a desktop circular, it is better to stop on a motor from 2 kW. In this case, it will have a power supply for any type of work. At the same time, its weight does not matter, since the table is always in the workshop.

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