1. How to fulfill sharpening
2. It's important to know
3. Assembling homemade sharpening

From time to time you need to sharpen the cutting element of the disk saw. Sharpecker Circular saw Requires certain knowledge, special equipment. There are machines intended for these purposes.

Types

Machines for sharpening disk saws - a group of devices for the resumption of the sharpness of the cutting elements. Depending on the functional features, they are:

• Automatic. The aggregates are established at large enterprises.
• Semi-automatic, mechanical (tools for dragging cutters manually). Different with low performance, mainly used in domestic workshops.

When sharpening circuits for longitudinal sawmills, other devices are used capable of sharpen each tooth using files.

All equipment that includes a complete electrical drive, similar to the action principle. Only productivity is different. So, low-power household samples can continuously function up to 20 minutes. After them, it is necessary to turn off at the same time for cooling.

Professional tools can work up to 8 hours. They need only a few short breaks for 20-30 minutes. Some units have an abrasive circle for sharpening, grinding tape of a similar action.

In most cases, the saw tool can be sharpened on machines, the main element of which is a grinding disk. Ribbon devices are more suitable for industrial use with large amounts of finishing grinding.

Sharpening machines are equipped with circles, characterized:

• thickness - 16-40 mm;
• outer diameter - 12-250 mm;
• fastening hole - 12,7.16, 20, 32 mm;
• manufacturing material.

On what the abrasive is made, you need to pay special attention: the result of the work depends on the quality. In addition to conventional cutters, there are circles on which there is a reinforcing solder - a plate of solid alloys. Most often there are corundum, diamond circles. They cope well with sharpening discs with carbide attacks intended for cutting particularly solid materials.

The circle for installation must be purchased with regard to the characteristics of disk saws. Abrasive tape is selected in accordance with the size of the machines. Also taken into account the graininess affecting the nature of grinding.

How to fulfill sharpening

The abrasive disk is cleaned of contaminants, remnants of the removed material, exhibit an angle of inclination. Sharpening starts with the front of the tooth. The maximum allowable to remove the metal layer is up to 0.20 mm.

It is necessary to ensure the correct supply of the cutting element to the sharpening disk. The sharpened circle should come into contact with the entire plane with the abrasive. In the process of work, you need to ensure that the blade does not overheat. It is possible to avoid the increase in the temperature of the material to the critical marks by adjusting the speed of rotation of the abrasive element, wetting it with a small amount of water before work.

Circles with diamond spraying processing the winning cutting tool are usually cooled by a special liquid (coolant). The process can be considered completed after the appearance of a uniform burr along the entire surface of the blade edge. The final grinding is performed manually.

It must be remembered that the machine can simultaneously process the workpiece only in the same plane.

It's important to know

The main wear of the saw falls on the upper edge of the teeth. It is most in contact with the material being processed. Due to constant contact with solid surfaces, rounding its central face can reach 0.3 mm. This is a critical indicator. It is necessary to ensure that the central protrusion is rounded by no more than 0.2 mm, otherwise it will be difficult to sharpen the element well, it will take a lot of time.

The degree of wear is usually determined by the state of the teeth, the quality of the cut. Each cutting disk has a resource. In most cases, it is 30-35 sharpeners.

It is impossible to form formation on the cutting edge during its treatment with zubrin, chipping machines, other defects that violate the integrity of the metal.

Assembling homemade sharpening

It is resorted to the manufacture of a homemade sharpening machine when there are no factory equipment at hand, and the cutting circles occur periodically. On the device you can sharpen the fastened disk for the circular saw.

For the assembly it will be necessary:

• electric drive
• caliper
• inclined mechanism
• screw limiters.

The circle must be fixed on the engine. The disk canvas is installed on the caliper, while the screw stoppers provide the cutter movement along the axis of the circle, creating the desired angle of inclination. The correct fixation of the saw disk relative to the abrasive is the main requirement of sharpening. In order for the angles to be observed, the adjustable stand, fixed in the same plane with a circular on the frame frame. By installing the disk on the stand, you need to ensure that the teeth are placed perpendicular to the plane of the machine.

When independently assembling the device for sharpening disk saws, it is recommended to use drawings and diagrams.

Sharpening can be performed and mechanical devices. But when applying special units is reduced, the work time is reduced, the sharpened cutter will have a sharper edge.

Circular saws with carbide teeth consist of a web (disk) made of steel 9khf, 65g, 50hf, etc., and carbide plates performing the role of incisors.

In domestic saws, sintered tungsten-optical alloys of VK brands (VK6, VK15, etc. The number means the percentage of cobalt) as material for cutting plates. In VK6 hardness 88.5 HRA, VK15 - 86 HRA. Foreign manufacturers apply their alloys. Solid alloys of VCs consist mainly of tungsten carbide with a cobalt crafted. Alloy characteristics depend not only on its chemical composition, but also grain size of the carbide phase. The smaller the grain, the higher the hardness and strength of the alloy.

Fasten carbide plates to a disc need for high-temperature soldering. As a material for soldering, at best, silver solders are used (PSR-40, PSR-45), in the worst case - copper-zinc solders (L-63, PMC-68-4-2).

Geometry of carbide teeth

A carbide tooth has four working planes - front (a), rear (b), and two auxiliary side (B). Crossing each other, these planes form cutting edges - the main (1) and two auxiliary (2 and 3). The determination of the faces and the edges of the tooth is given in accordance with GOST 9769-79.

The form differences the following types of teeth.

Usually used in saws for longitudinal fast sawing, in which quality does not matter much.

Oblique (beveled) tooth With the left and right angle of inclination of the back plane. The teeth with a different angle of inclination alternate with each other, because of which they are called alternately. This is the most common tooth shape. Depending on the magnitude of the sharpening angles, the saws with the alternated tooth are used to heat a variety of materials (wood, chipboard, plastics) - both in the longitudinal and transverse direction. The saws with a large tilt angle of the rear plane are used as cutting plates with double-sided lamination. Their use allows you to avoid chipping in the edges of the cut. An increase in the bevel angle reduces cutting force and reduces the risk of chips, but simultaneously reduces the durability and strength of the tooth.

The teeth may have a slope not only the rear, but also the front plane.

A peculiarity of these teeth is a relatively slow rejection rate of cutting edges in comparison with alternated teeth. Usually they are used in combination with a straight tooth.

Alternately, with the last and slightly towering over him, the trapezoidal tooth performs a draft sawing, and the straight line next to him is chisty. Saws with alternating straight and trapezoid teeth are used for cutting plates with double-sided lamination (chipboard, MDF, etc.), as well as for sawing plastics.

Saws with a conical tooth are auxiliary and used for nubbits of the lower layer of laminate, protecting it from chips when the main saw is passed.

In the overwhelming majority of cases, the front edge of the teeth have a flat shape, but there are saws and with a concave front face. They are used for finishing cross sawing.

Corners sharpening teeth

There are four main angle sharpening of the disk saw, which is equally with the form of the tooth determine its characteristics. This is an anterior angle (γ), rear (α) and angles of the front and rear planes (ε 1 and ε 2). The alarm angle (β) has an auxiliary value, since it is defined by the front and rear corners (β \u003d 90 ° -γ-α).

The values \u200b\u200bof the angles of sharpening are determined by the assignment of the saw - i.e. Those for cutting what material and in which direction it is intended. Saws for longitudinal sawmills have a relatively large front angle (15 ° -25 °). A cross-cut saw angle γ usually ranges from 5-10 °. Universal saws intended for transverse and longitudinal sawmills have averaged an angle value - usually 15 °.

The values \u200b\u200bof the angles of sharpening are determined not only by the direction of cutting, but also the hardness of the sawn material. The higher the hardness, the less should be the front and rear corners (less tooth pointing).

The front angle may be not only positive, but also negative. Saws with such an angle are used to cut non-ferrous metals and plastics.

The basic principles of sharpening

The main wear of the carbide tooth occurs on its main (upper) cutting edge. In the process of work, the latter curves up to 0.1-0.3 mm. From the faces faster than all the front.

When sawing massive blanks, side faces are subjected to rapid wear.

Should not be allowed to overflow saws. The radius of the cutting edge of the cutting edge should not exceed 0.1-0.2 mm. In addition to the fact that when working a highly blued saw, the performance drops sharply, it takes several times more time on it than the sharpening saw with a normal bunge. The degree of blunting can be defined both by the tooths themselves, and according to the type of dot, which they leave.

The correct sharpening of the disk saws is to simultaneously with the provision of due sharpness of the cutting edge, to ensure the maximum amount of sharpening, which in the optimal case can reach 25-30 times. For this purpose, the carbide tooth is recommended to be stuck on the front and rear planes. In essence, the teeth can be stuck on one front plane, but at the same time the amount of possible sharpening turns out to be almost two times less than when sharpening in two planes. The drawing below visually demonstrates why this happens.

The last passage when sharpening the saws is recommended to do on the rear plane of the tooth. Standard metal removal value - 0.05-0.15 mm.

Before sharpening, it is necessary to clean the saw from contaminants, for example, the resin, and check the values \u200b\u200bof the sharpening angles. On some saws, they are written on the disk.

Equipment and materials for sharpening saw disks

Depending on the material from which the teeth are made, the sharpening of the disk saws can be carried out with circles from ELBN (CBN), green silicon carbide, or diamond (PCD) circles. Thus, elboronic circles are able to sharpen discs from high-speed steel steel, diamond circles and circles from green silicon carbide - cutters from solid alloys.

When using abrasive circles (especially diamond), it is desirable to cool the coolant.

One of the essential drawbacks of the diamond is a relatively low temperature stability - at a temperature of about 900 ° C, the diamond combines.

With an increase in temperature, the microhardness of abrasive materials is reduced. The temperature rise to 1000 ° C reduces the microhardness almost 2-2.5 times compared to the microhardness at room temperature. An increase in temperature to 1300 ° C causes a decrease in the hardness of abrasive materials by almost 4-6 times.

The use of cooling water can lead to the appearance of rust on the details and nodes of the machine. To eliminate corrosion to water, soaps and certain electrolytes are added (carbonate sodium, calcined soda, trinitium phosphate, sodium nitrite, sodium silicate, etc.), which form protective films. With ordinary grinding, most often use soap and soda solutions, and with chisty grinding - low-concentrated emulsions.

However, when sharpening saws at home with a small intensity of sharpening work, it is not so often to cool the circle, - not wanting to spend time at this time.

To increase the productivity of sharpening with abrasive circles and reduce specific wear, it is necessary to choose the greatest graininess, which provides the required cleanliness of the surface of the stuffed tooth.

To select abrasive grain, in accordance with the sharpening stage, you can use the table in the article about the bars for sharpening. For example, in the case of the use of diamond circles, circles with grain size 160/125 or 125/100 can be used for the draft sharpening, for finishing - 63/50 or 50/40. Circles with grain size from 40/28 to 14/10 are used to remove jazbin.

It is necessary to strive for the surface of the tooth is very smooth. If they are notched on the surface of the tooth, the protrusions will be chosen during the operation of the saw, and it will very quickly fasten.

The circumferential speed of the circle at sharpening carbide teeth should be about 10-18 m / s. This means that when using a circle with a diameter of 125 mm, the speed of rotation of the engine should be about 1500-2700 rpm. The sharpening of more fragile alloys is performed at a lower rate of this range. When sharpening carbide tools, the use of rigid modes leads to the formation of increased voltages and cracks, and sometimes to the chunk of the cutting edges, while the wear of the circle increases.

When using disk sawing machines, the change in the relative position of the saw and the sharpening circle can be implemented in different ways - moving one saw (the engine with the circle is immobile), simultaneously moving the saw and motor, moving only the engine with the circle (saw disc is fixed).

A large amount of sharpening machines of various functionality is produced. The most complex and expensive programmable complexes are capable of ensuring fully automatic sharpening mode, in which all operations are performed without working participation.

In the simplest and cheapest models after installing and fixing the saw in the position that provides the necessary sharpening angle, all further operations - turning the saw around its axis (turn to the tooth), feeding to grinding (in contact with the circle) and thickness control of the tooth Metal - manufactured by workers manually. Such simple models are advisable to use at home when the sharpening of the disk saws is episodic.

An example of the simplest machine for sharpening disk saws can be a system, which is presented in the photo below. It consists of two main nodes - the engine with a circle (1) and the caliper (2) on which the stuck saw is installed. The rotation mechanism (3) is used to change the angle of tilt of the canvas (when sharpening teeth with a bevelled front plane). Using the screw (4), the saw is shifted along the axis of the abrasive circle. This ensures the installation of the desired value of the front angle of sharpening. The screw (5) serves to install in the desired position of the limiter, which prevents the circle to an excessive circle into the interdental depression.

Heat disc sharpening

Shoot a straight tooth on the front plane. The strainer of the straight tooth of carbide disk saws is carried out in the following sequence.

The saw is installed on the mandrel, clamping with a conical (centering) sleeve and nuts, then exhibited in a strictly horizontal position by means of a mechanism (3). Thereby ensures an angle of the front plane (ε 1) equal to 0 °. In machines for sharpening disks that do not have a built-in corner scale in the mechanism, this is done using a conventional pendulum sensor. In this case, check the horizontal of the machine.

The rotation of the screw (4) of the mechanism that ensures the horizontal movement of the mandrel with the circle is set to the desired heaping angle. In other words, the saw moves to a position at which the front plane of the tooth fits tightly to the working surface of the circle.

The marker is made to the tooth, from which the sharpening begins.

The engine is turned on and the front plane is sharpened - input to the tooth in contact with the circle and several movements of the saw back and forward with the simultaneous clamp of the tooth to the circle. The thickness of the removable metal is regulated by the amount of sharpening movements and the force of pressing the tooth to the abrasive circle. After sharpening one tooth, the saw is output from the contact with the circle, turns onto one tooth and the sharpening operation is repeated. And so as long as the marker mark does not make a full circle, indicating that all the teeth are sharpened.

Sharpening tooth, beveled on the front plane. The difference in the beveling tooth sharpening from sharpening direct is that the saw must be installed not horizontally, but with an inclination with an angle corresponding to the angle of the front plane.

The angle slope of the saw is installed using the same pendulum. First, a positive angle is set (in this case + 8 °).

After that, the sharpening of each second tooth is made.

After sharpening half of the teeth, the angle of inclination of the saw blade changes from + 8 ° to -8 °.

And again, every second tooth is hooked.

Sharpening on the rear plane. To sharpen a tooth along the rear plane, it is necessary that the machine for sharpening the saw disks allow you to install the saw in the one way, in which the rear plane of the tooth will be in the same plane with the working surface of the abrasive circle.

If there is no machine for sharpening saw disks

The sharpening of disk saws on functional and convenient specialized machines does not require special professional skills. A small practice - and sharpening will go without any problems. But most people use disk carbide saws epizodically, as needed. Spend a significant amount on a special sharpening machine, which is used for several hours per month, not for anything seems to be reasonable.

To accurately withstand the necessary angles of sharpening, keeping the saw in the hands on weight - the task is not easy even for a person with a unique eye enemy and enviable hardness. The most reasonable thing in this case is to manufacture the simplest fixture for sharpening, which makes it possible to fix the saw in a certain position relative to the circle.

The simplest of such fixes for sharpening disk saws is the stand, the surface of which is located at one level with the axis of the sharpening circle. Putting a saw blade on it, you can provide perpendicularity of the front and rear tooth planes with respect to the saw blade. And if the upper surface of the stand is movable, - fixing one side of it is hinged, and the other, - the opers on a couple of bolts that can be turned out and turned out - it can be installed under any inclination, getting the opportunity to sharpen an oblique tooth on the front and rear planes.

True, in this case, one of the main problems remain unresolved - the excerpt of the same front and rear angles of sharpening. It is possible to solve this task by fixing the center of the saw relative to the abrasive circle in the desired position. One of the ways to implement it is to make a grooving grooving on the surface of the stand on which the saw is installed. Moving the mandrel with a circle around the groove, you can withstand the necessary front tooth sharpening angle. But for sharpening disk saws with a different diameter or sharpening angle, it should be possible to either move the engine or a stand and a groove with it. Another way to ensure the desired sharpening angle is simpler, and is to install the locking disk on the table of the locks. At the end of the article there is a video with a demonstration of such a device.

Quality control sharpening

On the sharpened teeth, there should be no cracks, chips, visible risks from the grinding circle. Radius of rounding cutting edge should be no more than 0.015 mm. Visually, this can be defined as the absence of glare on the cutting edge.

GOST 9769-79 Sets certain values \u200b\u200bof tolerances to sharpening parameters. The end beating of the peaks of the teeth should not exceed 0.2 mm (for saws with a diameter of up to 400 mm), radial - 0.15 mm. Being is checked using a conventional direction indicator.

Deviations of sharpening angles should not exceed:

• for the front angle - ± 1 ° 30 ";
• for the rear angle and the angles of the front and rear planes - ± 2 °;

Video:

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Among the tools that are used to work with the tree, the disk saw is pretty in demand. It is provided in its designs of a solid alloy, and steel plates that are attacked on them are also used here. Solid alloys are used to create a plate, thanks to which the cutting effect is ensured. But over the time of the teeth, the saw blade is no longer able to effectively perform its basic function, which is why they need a certain processing. You can preserve the premature bunge of the teeth of the saws using the cutting machine for sharpening the disk saws.

Varieties of machines for sharpening disk saws

Speaking about equipment for sharpening disk saws, it should be noted that it covers quite a few types of machines that imply the models of the most simple execution capable of performing the necessary operations in manual mode, as well as automatic machine lines, which can noise disk saws without help.

The machines offered today can be classified into two large classes:

• household applying machines;
• machines for professionals.

This separation is conditional. Moreover, the difference between this equipment consists only in performance, under which only the time is understood during which the sharpening equipment can work in continuous mode. For models intended for home use, a similar indicator is no more than 15-20 minutes. After this period of time, the user must give the time the time to rest. Professional models noticeably exceed similar machines According to the parameter under consideration, since they are able to work for 8 hours, and to ensure efficient work, they need the same pause that it is enough to arrange only twice for the working shift.

To date, each manufacturer in its own way comes to the separation of this equipment, on the basis of which the range is formed. Some sharpen attention on the designs, others on the reserve of reliability, there are also those for whom the most important parameter is the demand for a certain brand of equipment.

Equipment of the equipment under consideration deserves special attention. Based on this parameter, the machines can be classified into two groups:

• having abrasive grinding circles;
• equipped with grinding ribbon.

Most often used equipment with circles. As for the models in which the grinding tape is provided, they got the greatest distribution in industrial production. They allow not only to give disk saws the necessary cutting ability, but also provide a finishing grinding of the saws.

Sharpening procedure saw

To create gear plates that are equipped with disk saws, a variety of alloys can be used. All of them may differ from each other with characteristics that are determined by the properties of the alloy, as well as its degree of grain. Moreover, with a decrease in grain, the strength and hardness of the material used increases.

Also, disk saws may differ from each other with sizes of teeth. Based on this feature, the following forms of teeth can be distinguished.

Straight teeth

Most often it can be found on the saws that used for quick longitudinal sawmillswhere the quality of cutting is not paid.

Beveled teeth

It is such teeth and most often presented on disk saws. Located on a saw, these teeth may differ from each other by sharpening, which can be right and left. Working by such disk saws excludes the formation of chips, the risk of which is particularly high at the edges of the sawing coating.

Trapezoid teeth

The tool equipped with similar teeth demonstrates a long service life and at the same time no longer requires sharpening. These saws are characterized by the fact that the trapezoid teeth are used together with straight. Their location creates an opportunity to perform coarse sawing With the help of trapezoid teeth, and due to the presence of direct teeth there are conditions for holding a clean cut.

Conical teeth

Saws that are equipped with incisors of this type can be used in addition to their main task and to cut the bottom layer of the board, as a result of which it is possible to prevent the chill on the upper layer.

Homemade machine for sharpening saw

Certain with the task of sharpening disk saws can every person, for which he does not need to possess special skills. Will not be a serious interference and lack of special equipment, because if desired you can make such a machine with your own hands.. The first thing to know in the manufacture of such equipment is from which items it will consist of:

The cutting machine created by your own should have such a device that would allow to fix the saw in the desired position relative to the emery circle. Due to this, it is possible to withstand the necessary tooth sharpening angles with high accuracy. This can be done using a stand that will have to be installed on the machine frame in the same plane as the sharpening circle.

When a saw disk is placed on the stand, its tooth forms its plane with a straight angle with a saw blade. In some cases, the manufacture of this stand in the rolling version is allowed. With this task you can it's easy enough to handle: To install one side of the surface, a hinge is used, and another part must be made in such a way that it is rigidly fixed by the edges using the bolts for this purpose. By creating a sharpening machine in a similar embodiment, the user will have the opportunity to have disk saws at any angle and sharpening in any plane.

However, in the process of using such a sharpening device the user may encounter serious difficulty. - He will have to make efforts so that the angles of sharpening turned out to be the same. To do this, the saw center must be fixed in the desired position relative to the sharpening circle. It is possible to simplify the solution of this task if you create a special groove on the stand, with which to facilitate the saw mandrel procedure.

During the movement of the mandrel with a circle along the groove, there will be no serious problems with the observance of the required angle, under which the sharpening should be performed. Also, this task can be solved by another method. It is more attractive due to its lower complexity. To do this, you need to create supports on the working surface, with which the saw will be fixed in the desired position.

The main rules of sharpening

So that in the process of sharpening disk saws to achieve the desired result, in the execution of this work, certain rules should be followed:

Having at the disposal a homemade cutting machine, you can perform a qualitative tool processing if you adhere to all the rules of this procedure. At the same time, your expenses will be much less than you would decide to stop the choice on the factory apparatus. In addition to this to use such a machine, you do not need professional skills. Operating.

To sharpen a disk saw, you do not need to have a highly qualified specialist. There are no special difficulties in leaving the machine. The main thing is to pay attention to what the condition is a grinding circle and clean its surface from a variety of contaminantswhich may occur while working.

In order for the result of sharpening saws to suit you, it is necessary to adhere to the following simple rules:

• take care that the dischargeable disk is located in a certain way in relation to the sharpening circle: the position is optimal when the disk interacts with the circle of its entire plane;
• it is also important to prevent excessive heating of the blade to critical temperatures. This can be achieved if you install the appropriate speed of rotation of the circle, while it will be useful even before performing sharpening to pour a circle with water;
• it is possible to determine that the sharpening helped to achieve the desired result, it is possible by the presence on the entire edge of a uniform burr. The procedure will be completed by adding the saw disk the necessary cutting ability by processing it with grinding circle.

Conclusion

The disk saw, like any other cutting tool, at a certain point starts worse to perform its task. In such cases, it becomes necessary in the sharpening of the tool. The most effectively this task can be solved using a sharpening machine. If you do not have such a device, then you can purchase it in the store or make it yourself.

However, regardless of the option that you choose, you must remember that it is precisely from the tool sharpening technology, how qualitatively the disk saw will be cut. Therefore, before proceeding with a sharpening machine of a disk saw, you should familiarize yourself with sharpening rules. This will help you avoid damage to the saw blade and with less effort to achieve the desired result.

Sharpening saw disks are necessary for any tool used for wood processing. It is made in the case of a decrease in quality cut and requires compliance with the basic rules, since the literacy of the filler is also affected by the saw.

rules

• Pliers can act as a tool for flexible, but in this case it is necessary to monitor the position of all teeth, otherwise the disk will be spoiled and will not provide proper processing of wood.
• During the work, the holding bars should fit tightly to the disk, and the surface remain unchanged.
• In order for the sharpening of the saw disks correctly, the location of the part should provide free viewing of all teeth.
• As a main tool, it is usually a machine, but sometimes there is a need to remove the disk and securing it in the vice.
• Before changing the angle, a suitable tool is pre-prepared and marked.

Preparation

Before starting work, you need to de-energize the tool, the detail of which has lost the same characteristics. The disk is tightly fixed with the help of special bars, which are placed on both parties. For all teeth, markers are placed on the canvas, and equal efforts and identical number of tool movements are applied during the process. So you can produce high-quality, uniform disk processing.

The item is installed back after reaching the desired and checking the angles of sharpening. Next, you need to make a trial cut on the machine and make sure the work performed. It is important that all the teeth are placed on the same plane, otherwise the movement of the bar will be uneven, and the operation of the machine will be accompanied by a characteristic noise. It is also possible if some teeth require adjustments.

Layout

If the sharpening of the saw disks is performed independently, it is worth remembering about the divorce of the edges, in which all the teeth gradually be rejected into different sides, but the distance between them remains the same. These actions can be performed using a special tool called wiring, it provides uniform bend in the middle part of all items. After this procedure, the saw will acquire a closer course, and the width of the propyl will become more.

With the fact that the propyl is made not by the disk itself, but its edges that gradually remove the layers of wood, it becomes clear that with an increase in the divorce of the teeth, the probability of jamming is reduced, and the propyl acquires a large width. It is worth noting that in this case the tool has to make more efforts. In the absence of special devices, many use to breed teeth, but this technique has many restrictions and is not suitable for everyone.

The type of wiring is primarily affected by the wood breed, which will later be processed. For example, to obtain a smooth cut without any shortcomings and protrusions on a soft breed requires a large wiring. It is desirable that the teeth are deflected in the selected side by 5-10 mm. The sharpening of the wood saw discs is made only after the execution of the wiring, otherwise the teeth will be unsuitable for use due to the deformation.

Choosing angle

The purpose of the saw, that is, the type of suitable materials, determines the necessary angles of sharpening. Relatively large value is used for elements of longitudinal sawing (within 25 degrees), for a transverse processing saw, this parameter is 5-10 degrees. The sharpening angle of saws of the universal form (used for longitudinal and cross-cutting) is 15 degrees.

In addition to the processing direction, the density of the material to be resulted should also be taken into account. With a decrease in density, the value of the front and rear angle increases, that is, the tooth becomes more pointed. The front angle parameter may also be negative, it is necessary for work with plastic and non-ferrous metal.

When you need a sharpening saw disks

To find out when you need to do a disk saw, you can pick up a small part, the density and quality of which corresponds to the materials used for work. Next you need to cut the bar. The disk does not require processing if smooth cut is formed, the saw is easily and does not make noise during operation. In the back of the situation, the disk is needed at home or, in the absence of a special tool, contact the workshop. It is worth noting that this process should be made in accordance with all the rules and taking into account safety equipment. Before this you need to decide on the desired angle and form of teeth. There are also additional factors indicating the need for sharpening:

• in the process of wood processing, the smell of Gary is felt and a Nagar is formed on the propylene itself;
• the engine begins to overheat and contributes to the heating of the device's casing;
• large efforts are required to move the disk.

What you need to know

Sharpening saws (SPB) today is made by many firms, but not everyone can provide a qualitative result. The problem is that this process requires equipping expensive tools and knowledge of all aspects and features of such a painstaking processing. The masters must have experience in this area and comply with all the nuances and stages of work. For example, at the sharpening angle affects not only the tool used, but also the disk itself, in particular the material taken as a basis for production.

Must have an angle corresponding to the types of surfaces used for work. The equipment can work with values \u200b\u200bwithin 45 degrees. A special role has the observance of the established angle of shafts suitable for processing a certain material. Only, when taking into account all the recommendations and rules of work, you can increase the life of the cutting element.

Sharpening carbide saws

The processing of such elements has several complex stages and is made on special equipment, which is a shaft machine with advanced functionality. In particular, it should provide cooling of the processed zone in the form of supplying a special composition and carrying out work in automatic mode. Such equipment, as a rule, is equipped with a controller designed to identify the amount of teeth and the sharpening of the disc itself with the selected number of cycles. Also on the machines there is a magnet necessary to secure the saw and prevent its movement during the processing process. For sharing is used on the surface of which diamond spraying is applied. The machine for sharpening the saw disks, in addition, is equipped with an electric motor for the automated displacement of the saw and performing processing on the required plot.

Equipment for processing saw with a spraying of diamond crumb

Such machines must have a design, complemented by cast reliable base. This ensures high accuracy of disk processing, which are made of materials with special strength. Also on them there is a fixer with a high level of inclination. The base is complemented by special elements of rubber, reduced vibrations that may worsen the quality of the work performed. Due to this add-on, the noise level occurs during the processing process is reduced. Adjustment on the equipment is performed manually, with diamond spraying discs, used for shape saws, increase the quality of the result and extended the operation of the tool.

What to take into account when processing

The principle of operation of the disk for the shaft has its own characteristics, as well as its structural execution. At the heart of the materials for its manufacture, nitrogen and boron are connected, which increase not only processing accuracy, but also resistance to high temperatures, which are characterized by the process itself. It must be borne in mind that the circles have different diameters and are suitable for different tools and types of materials, so you need to carefully select the desired model in accordance with the existing tool to be processed.

Features

Sharpening saw discs in Moscow is produced in various equipment. Processing can be semi-automatically, that is, without the participation of a person, the task of the masters includes only the installation of parts for the machine and their removal. Most often occurs the type of equipment on which the nod is made in manual mode. It is characterized by easy adjustment due to the equipment in the form of locking levers, and the exact observance of the necessary sharpening angle is performed using special fixtures. The main feature is the linear feed method. This achieves high-quality processing of both the rear and front teeth. Thanks to the additional function of the machines, which consists in diagonal edge shape simplifies the operation of the saw and the quality of the recent obtained is improved. Choosing a disk for first of all it is necessary to take into account the degree of grain. Products with small grain provide minimal circuit treatment, while coarse-grained is removed by a sufficient layer of material. The cost of such disks is directly affected by the manufacturer, the quality of the base and the type of product.

Circular is a fixture on which work with a building material is carried out. As a rule, a tree is processed. The cutting disk is used as a cutting tool. Over time, he is fascinated. The circular saw disk is carried out both on a special machine, and with his own hands at home.

Sharpening disks for circular saw is required when the work becomes impossible. This can be understood by three signals:

• Heating protective casing. From under it, smoke appears, comes out of the cutting zone.
• The need for additional effort when applying the workpiece at the time of cutting.
• With the contact of the tree with the cutting metal, Gar and smell appear.

Types of teeth

The main cutting element of the disk is the teeth. They are made of carbide material. It is a tooth from China's Faces: Front, rear and two side. Also from the main cutting edge and two additional.

Teeth requiring sharpening are divided into:

• Straight. Used for longitudinal resinking of the web.
• Bevelled. Have an angular edge on the back of the tooth. There are not only wood, but also plastics or chipboard.
• Trapezoidal. In the section, the cutting plane has the shape of a trapezium. Thanks to this, they can less close them.
• Conical. Have a view of a cone.

Corches sharpening

Circular saw has four cornerswhich after dull it is necessary to sharpen. This is the front and rear corners. Also, cutting angles formed by the front and rear surfaces.

Depending on the direction of sawing, they need them. With longitudinal cutting, the magnitude of the front angle is 15-25 degrees interval. In the case of transverse sawing, the sharpening angle decreases to 5-10 degrees. If universal saws are required, then the tooth is sharpened at an angle of 15 degrees.

Important effect on the value of the angle has the density of the material. What it is lower, the tooth is needed sharper. If the material being processed is plastic, then the angle may be negative.

Sharpening circular saw with winners

Casting angles of disk saws with carbide attacks to endure not easy because it is applied to the tooth. This alloy is attached using soldering. The geometry of the cutting part is complex, and sharpening parameters require accurate exposure.

Works are carried out when smoothing the cutting edge to a radius of 0.3 mm. Much should not be allowed.

• Bolding is carried out the front and rear plane of the tooth. If the work is carried out correctly, the total amount of sharpening to complete wear of the canvas will be 30 times.
• Start work follows from the front plane.
• The part of the tooth, which has a naughty, should fit tightly to.
• The time of the sharpening is from 3 to 5 seconds. It is impossible for longer. This leads to excessive heating of metal. It has its own recallation and vacation with a decrease in hardness.
• The thickness of the stated material in the region is 0.15 m.

Application Machine

The simplest machine for working at home it is an engine with an abrasive. Circles can be diamond, elboronic or silicon carbide.

To keep the cloth in a certain position relative to the abrasive is difficult. You need to use fixtures. It can be a horizontal stand or a fixing device, where the upper plane must coincide with the axis of the abrasive.

The sharpening tooth is located on the plane so as to be perpendicular to the canvas. After turning on the engine, the canvas is supplied to the circle and pressed to the tooth to it. The metal removable layer is regulated by pressing force. Having finished working with one tooth, the following method is supplied. And so in a circle to the end.

For the purpose of universalization, the stand is upgraded. The front part is moving, and a pair of bolts is screwed into the rear. With their help, you can adjust the slope of the web. There is an opportunity to sharpen the front and rear plane of oblique tooth.

The problem remains the same withstanding the angles of the front and rear sharpening. To do this, it is necessary to fix the cloth relative to the center of the abrasive circle. For this, the disk is inserted into a special mandrel, and in the stand is under it a groove. The necessary is maintained by moving the mandrel over the groove. If the diameter of the disks is different, then the possibility of moving the engine or a stand with a groove should be provided.

Another way is to install the stops that will fix the desired position of the disk.

Sharpening manually

Behind the absence of the machine, the sharpening can be carried out with a file. For this, it is important to clearly fix the disk. This is done with the help of vice. If you can not remove the cloth with the circular, then you can do without them. Bars are inserted between the teeth, and the tool rests in the vertical plane.

At any point in the circle, the marker is made. So it will be understood when the work will be completed. Processing is carried out with a flat file, which is well among the teeth. The top edge of the tooth and its front edge is exposed to the greatest wear.

First, the work is carried out with the rear surfaces of the teeth throughout the circle. At the second stage, it is embarking on the front faces. It is important to remember that the accompanying effort should be the same, then all the teeth will be evenly sharpened.

The sharpening of the circular disk really spend at home. To do this, it is better to purchase a simple machine. In his absence, you can take advantage of visits or homemade stops. After completing the work, check the tool. In the process of cutting, its work should be smooth and quiet.