Proper sharpening of tape saws with a borazon circle.

Sharpet angle of tape saw. Recommendations

Sharpening of tape saw on wood, instructions and safety regulations during this operation are the main issues that every home master should know, having a saw of a similar design in his farm. The fact is that they are used not only in production, but also in everyday life. For example, many residents of rural areas use them to make boards or sawing logs on a beam.

However, like any saw, strip tools must be periodically repaired. over, this maintenance consists in the implementation of technological operations such as sharpening and wiring. They are quite complex in technical terms, and if you do not have experience in their conduct, it makes sense to contact a specialized service center for servicing a sawing and cutting tool.

If you have experience in servicing woodworking tools, you can dilute and sharpen your saw yourself. The meaning of such work independently consists in saving funds, t. to. Sharpening saw. quite expensive pleasure.

Design features of strip saws

Elements of the teeth.

• The width of the cut (cut) in tape tools is much smaller than that of disk analogues. When cutting a cheap tree, the moment is not so noticeable, but when cutting valuable and exotic varieties of wood, it is important critically.
• The machine can saw the blanks of any size. At the same time, the strip tool works quickly and creates a cut of high quality.
• Waste (chips, sawdust) when using this type of saw very little.

note! For the machine to always work stably and efficiently, you should approach its maintenance extremely responsibly. Sharpening and wiring of tape saw on wood should be carried out in a timely manner and competently.

Profile, teeth and angle of sharpening

International classification of teeth profiles.

Ribbon devices have different geometry of cloves, which depends on the type and characteristics of the cut materials. Tool for wood can be carpentry and dividing. There is a third type designed for sawing a beam, logs. All these subspecies have their own parameters and the shape of the cloves.

The angle of sharpening of tape saw on wood is selected by the manufacturer based on several points. The main of them is the more firm, the more the front angle should be smaller. Below is a table with the main saw parameters.

Sharpet saw STF Slavic courtyard

As the saw was blown, it should be sharpened and divorced. over, this sequence is extremely important: the sharpening of the canvas is made before wiring, and not vice versa.

Before sharpening, the saw should “relax”, freely sagging in a turned state for 20-24 hours.

It is very important: with each sharpening of the saw, the metal was removed throughout the profile of the tooth and hollows. to fresh metal.

Strive to shoot as little metal as possible during sharpening, only slightly crashed with a disk to make several passes. With rough cutting of the abrasive into the canvas, cracks form on the hollow. this will lead to a rupture of the canvas. In the last passage, only the back line is polished so that the grinding waste on the main cutting edge lay in the direction of cutting the saw. Thereby the cutting tooth will be more resistant when cutting.

Sharpening of a saw is needed not only to give the severity of the cutting edge, but also to remove numerous microcracks that formed in the sinuses of the saws of the saw during its work.

When sharpening, it is important to remove such a amount of metal from the sinus of teeth, so that microcracks would be removed with it. over, the metal should be removed evenly for the entire tooth profile (to fresh metal). Failure to fulfill this condition, in addition to increasing the risk of a saw rupture, also leads to a change in the parameters of the tooth (profile, height of the tooth). The amount of metal removed should be proportional to the operation of the saw T.e. the longer the saw worked, the more metal it should be removed when sharpening. At the same time, it is necessary to follow the pressure so that the pressure of the sharpening disk would not be overcoming. Otherwise, the saw annealing will occur. And it is already completely unacceptable to drag a saw without a cooling liquid. If annealing all the same, then with the help of a right stone it is necessary to clean the surface of the sharpening disk of metal particles covering it during sharpening.

If the saw is sharpened correctly, its profile does not change, the height of the tooth remains unchanged, there are no risks from abrasive particles of sharpening stone in the bosom of the teeth and on the tops, there are no traces of metal annealing, the burrs are completely removed, the cutting edge of the tooth has the correct shape and sufficient sharpness. Burrs must be carefully removed after sharpening, t.to. In addition to distorting the results of wiring, they also provoke the formation of microcracks in the saw canvas. And yet, the adjustment of the sharpening machine during sharpening can only be changed after a groove of the entire circle of a strip saw.

Turn the logs

When approaching the remaining height of the log to the desired size, it is turned over. If you need to get a beam with a thickness of 150 mm, a sawn width and the remainder of the height of the log should be slightly larger than this size, taking into account the hump.

When the log is turned upside down, the remainder of the height after the cut is made, and the material is calculated before using this size completely.

• The remainder of the height of the log after drinking. 270 mm. Purpose. get a beam with a thickness of 150 mm: 270–150 = 120 mm.
• From 120 mm, it is necessary to get a block 50 mm: 120–60–3 = 57 mm. A value of 3 mm is given for cut.
• Tesina 25 mm: 67–25–3 = 40 mm.
• Podgarchirik 25 mm: 40–25–3 = 12 mm.
• Humps 12 mm.

Further receipt of lumber is achieved by turning a log at an angle of 90 degrees and similar calculations. One of the common errors. the allowance for cuts is not taken into account or more than a number of times is added. The master needs to be careful.

Sharpening recommendations

During operation of the canvas, its gap is very often observed. This is due to the fact that its sharpening is poorly carried out. This is due to the concentration of the voltage in the profile of the canvas if the sharpening is carried out at a poor.quality level. The need for the procedure is determined by the state of tape saws. If the roughness of the surface of the cut increases, then this leads to a tag of the tool.

The instrument is sharpened using diamond, electrical coronary, elbor discs. Their choice directly depends on the features of the processed material. Sharpening of the canvas, the material of which is instrumental steel, is carried out by corundum circles. The procedure for bimetallic tools is carried out correctly if a diamond or elbore circle is used. How to conduct this procedure will tell the instruction. The most important thing is that the angle does not change in the process.

Circles of various diameters can be used for sharpening. The choice of one of them is determined by the parameters of the device. For this purpose, the most commonly used are profile, flat, plate, cup circles. Sharpening is properly performed if the district speed is from 20 to 25 meters per second.

Preparation of the device for work

During the constant use of the tool, it is inevitable to lower the quality of the cutting edge. It is blunting, and the width of dentist is reduced. Based on this, the sharpening of the saw on wood and its wiring are the necessary components of the maintenance of the tape.saw machine.

It should be noted that the wiring of the teeth should be carried out before they are sharpened, and not vice versa.

Warring the tool

Wiring is the process of bending the cloves on the sides. This operation is needed so that the saw blade does not clamp in the workpiece, as well as to reduce friction during operation.

• With the classic method, cloves bend left-right in strict priority.
• With the cleaning method, each third of the teeth remains in the original position. It is optimal for devices designed for cutting especially solid varieties of wood.
• With wavy wiring, each tooth has its own separate bending. In this case, the profile of the canvas acquires the type of wave. This method is most complex.

note! When carrying out the wiring, not the entire clove should bend, but only a third or two.thirds from the top. Producer companies advise to carry out the operation so that the bending range will fit in 0.3-0.7 millimeters. Work is done using a specialized diluting tool.

Sharpening of the saw

Before sharpening a saw disk or a strip tool, keep in mind that more than 80% of the incidents with damage to devices (including their gap) occur due to non.compliance with the norms of work.

• The need for the operation is determined visually. In this case, you should pay attention to the condition of the cloves and the quality of the walls of the cut (for example, their increased roughness).
• Circles for the point of tape tools are elected based on the degree of hardness of cloves. Corundine discs are needed to work with instrumental steel devices. Bimetallic sharpening saws on borazon or diamond circles.
• The shape of the sandpaper for tape devices must be selected, starting from their parameters. Culled circles cups, profile, plate, flat.
• Before the operation, it is necessary to turn the saw and let it hang in this position for about 10-12 hours.

Sharpage of the saw on wood should take into account the following provisions.

• Removing metal in the profile of the teeth should be uniform.
• Excessive pressure of the sharpening device must be suppressed. He can lead to anneal.
• The profile of the canvas and the height of the teeth should remain unchanged.
• Liquid cooling must be ensured during the operation.
• Zausenets on the teeth should not arise.

Pay attention! Theoretical instructions for sharpening tape saws on wood notify that it should be carried out either on the front side of the teeth, or both on the back and front. In real life, most experts and amateur masters perform the operation only on the back side, t.to. This is more convenient.

Taking methods

In the photo automatic full.profile sharpening.

You can prepare the tool for work using special sharpening devices (for example, machines with different in material and shape in circles) or manually. Before you properly sharpen the saw on the tree, you should study the main methods of conducting this operation.

The first method is full.profile sharpening.

• It is the highest quality, the operation is carried out on the automatic machine.
• The elbore emery selected exactly in shape passes the entire surface of the interdental cavity at the same time with the accompanying planes of neighboring teeth in one motion.
• The creation of angles at the tops of the teeth is completely excluded.
• The relative minus of such a drag is the need to have at your disposal the corresponding number of circles for paintings with different profiles.

The second method is the sharpening of the faces of the teeth.

You can do this manually and using a professional machine.

• Having chosen the machine, it is necessary to decide on the applied circle. As a rule, it is flat. Specialized sharpening devices should only be resorted to when there is a lot of such work.
• In domestic conditions, sharpening is best done with your own hands. on ordinary mechanical emery or with the help of engraver. When carrying out the operation, do not forget about personal protection and use gloves, mask or special glasses.

Sharpening options

There are 2 ways to sharpen the teeth of the saw:

• Full.profile, produced on an automatic machine for sharpening tape saws. Borazone circle corresponding to the tooth profile, over 1 pass, restores the profile of the interdeter hollow and grind the cutting edges of the tool.
• Sharpening of cutting edges of teeth. Can be done manually or on a machine with a flat sharpening disk. In this case, the faces are focused, and microcracks are removed on the working surface of the tool formed during the work.

Preparation of the device for work

During the constant use of the tool, it is inevitable to lower the quality of the cutting edge. It is blunting, and the width of dentist is reduced. Based on this, the sharpening of the saw on wood and its wiring are the necessary components of the maintenance of the tape.saw machine.

It should be noted that the wiring of the teeth should be carried out before they are sharpened, and not vice versa.

Warring the tool

Wiring is the process of bending the cloves on the sides. This operation is needed so that the saw blade does not clamp in the workpiece, as well as to reduce friction during operation.

note! When carrying out the wiring, not the entire clove should bend, but only a third or two.thirds from the top. Producer companies advise to carry out the operation so that the bending range will fit in 0.3-0.7 millimeters. Work is done using a specialized diluting tool.

Sharpening of the saw

Before sharpening a saw disk or a strip tool, keep in mind that more than 80% of the incidents with damage to devices (including their gap) occur due to non.compliance with the norms of work.

Sharpage of the saw on wood should take into account the following provisions.

Pay attention! Theoretical instructions for sharpening tape saws on wood notify that it should be carried out either on the front side of the teeth, or both on the back and front. In real life, most experts and amateur masters perform the operation only on the back side, t.to. This is more convenient.

Characterization of the teeth of the tool

On such tools, depending on the characteristics of the materials that will be processed, different forms of teeth can be used. For example, for working with wood, devices are used:

The shape and other parameters of these elements are different depending on the type and subspecies of teeth. At what angle it is necessary to carry out the turning of the manufacturer. This parameter depends on a large number of factors. However, there is one general trend: the softer the material, the bigger the angle of the backing should be, and vice versa.

A tape intended for cutting metal products is equipped with one of two types of teeth:

All these nuances must be taken into account when turning. As statistics shows, in eighty and ninety percent of cases, it is incorrect sharpening that is the cause of the rupture of the tape.

Wiring

Wiring precedes the turning. If when sharpening tape saws with your own hands, skip this stage with your own hands, you can not hope for a good result. The essence of the wiring is to bend the teeth to the sides. This procedure will reduce the friction of the canvas and prevent its compression. You can carry out the procedure in one of three ways:

• cleaning wiring. Every third tooth of the canvas is left in the initial position. Others bend. The method is used to maintain products that process materials of increased hardness;
• Classic. The teeth alternately bend into the right and left sides;
• wavy. This type of wiring is the most difficult. When it is used, a bend of each individual tooth is provided under a certain degree. over, this degree is individual for each element.

Typically, the manufacturer of the product indicates the recommended wiring parameters. The permissible bending range varies from 0.3 to 0.7 millimeters. To carry out the operation, it is necessary to have a special divorce tool.

Sharpening

Trining can be carried out using a special sharpener, or without it. For this procedure, it is not required to have special skills, although people without experience may have certain difficulties. Two types of sharpening are distinguished:

In the first case, you can not do without a special machine equipped with an Elboron circle. The circle is selected individually on the basis of the shape of the product. The sharpening tool pierces the interdental cavities of the tape, capturing the surfaces of neighboring teeth. The quality of such processing is quite high. However, you will have to acquire a large number of circles with different characteristics.

The edges can be pulled manually, without a special machine. However, you can use the units intended for this. For manual sharpening you need an engraver or a file. The quality of processing on the machine is higher, however, as in the previous case, you will have to acquire a large number of sharpened circles.

Current machines

Units intended for full.profile turning function in automatic mode. The movement of the pusher and engine with a circle is synchronized. The task of the pusher is to move the tape one step after sharpening each recess. The problem of such machines is the narrowness of their use. For saws of different profiles, you need to have different units.

There are also machines that are hidden, the front, rear surfaces of the teeth, or both sides at the same time. Speaking circles. flat circles, in the manufacture of which a certain abrasive is used:

How to choose equipment for sharpening?

It is quite difficult to choose a high-quality hollow machine, but there are more and more truly high-quality tools in the modern market. With the advent of automatic sawing tools, the quality of the process increased, since the human factor in this process is minimized, which means that incorrect angles of inclination of sharpened teeth or collapse of the sinuses are excluded.

Among high.quality machines, you can distinguish models of several brands.

“Cedar”. One of the most common and famous brands. This tool refers to a fully automatic machine, which uses work due to the installed program. And also here is the constant control and use of coolant for normal functioning. “Cedar” is quite easy to handle and is suitable even for novice masters. It is also not difficult to set the angle manually, just weaken two special bolts located on the back of the tool, and adjust the angle you need near the base. And also on the tool there is a speed control regulator.

modern variations allow the use of sharpener diamond circles.

“TAIGA”. The brand is no less known than the previous one has almost the same characteristics, management in it is even a little easier. The angle and speed of the canvas can also be easily adjusted on the tool.

This machine can be used for both wide and narrow ribbon saws.

“AZU-02”. The most modified of all previous machines. All models have a special device for automatic coolant supply. There are several switches on the tool that allow you to fully control the operation of a sharpening machine. As well as all models use diamond discs that accelerate the process of work and improve its quality.

On the AZU-02, you can still adjust the speed modes of movement of the canvas, which also greatly simplifies the process.

“PZSL 30/60 Pro”. Modern, fully automatic machine with high sharpening speed. To cool this machine, special cooling oil is used. No professionalism is required to work with such a machine, only superficial control will be needed in the process, since the machine is turned off when the saw of teeth is pulled by one circle.

“PZSL 10/2”. Automatic machine for narrow ribbon saws, suitable for both saw on wood and for sawing metal. This unit, like the previous one, has oil cooling. The process is fully automated, the master’s task is only to install the desired process and bring the canvas to the machine, then the machine itself will do all the work.

Astron (A-1). Full.profile borazone machine, the process of working with such an unit is fully automated. The machine pulls the entire saw tape for 1 full passage. For sharpening, an elbore disk is used, which is characterized by high quality and durability. The setting of the process is very easy and does not require high professionalism.

In the modern tool market, there are a huge number of a wide variety of sharpeners for saws, the most basic and popular sharpening machines are given above.

The granularity of the sharpening circle

To indicate the grainness of the sharpening circle, certain numerical values ​​are also used, they are represented by the following table:

With an increase in the number in accordance with GOST, the size of the grains used in the manufacture of a circle, and the degree of cutting and supply when sharpening the strip saw increases. However, the quality of the processed surface will be better when using fine.grained abrasive circles.

This indicator affects the ability of an abrasive circle to self.adjusting. During the sharpening of the strip saw, the faces of the blunt grains are riding, they are taken out, thereby opening the new working layers of the circle.

In the process of turning, a more solid circle will be better to keep its shape, but its chamois will already dull. To maintain high quality work, you will have to use greater power and lower feed. However, this may threaten the formation of fuss and risks. In addition, the relatively soft material of the saw will clog the pores of the circle, which will affect the quality of sharpening.

When using a too soft sharpening circle, the ligament can hold the grains very poorly, so they will paint from the body of the circle. Soft circles will quickly lose shape and worn out.

When working, the main thing is to choose the right level of hardness of the sharpening circle, and for this you should use the data in the table:

Full.profile elborne (borazon) sharpening circles

The elbore (borazone) profile circle is used on modern sharpening machines instead of an abrasive tool using full.profile circles. High.quality sharpening of strip saws is carried out using this type of circles, that is, it allows you to get the equally protected tooth profile on the strip saw: with the same front and rear angles, along the entire length of the saw without rogues, scorks and microcracks. Due to its design, which completely repeats the tooth profile, and the sharpening method (sharpening of the entire tooth profile immediately using oil cooling), this tool increases the service life of the equipment used up to three times.

Circles are made for tape saws with profiles: Wood Mizer, Lynx, MFS (MunkForsSagar), UDDEHOLM, WOMACO, SANDVIK, CARL RONHOLZER, SIMONDS, MFLS, HAKANSON, Arntz, Diamond, Bahco, Lenx and other Lenx and other Lenx and other.

Circles are delivered with different profiles depending on the manufacturer of the saw, and with the dimensions of 12712.7; 12720; 15032; 20332; 350127.

When working in one pass, this circle levels and standardizes the outer and inner corner of the tooth, as well as the interdental cavity of the saw.

The circle has wear resistance and high sharpening quality.

For cooling and cleaning when working with a circle, a lubricant-cooping liquid is used.

Advantages

• High cutting and resistance due to the prolonged preservation of the severity of the grains;
• The ability to withstand high thermal loads;
• The ability to give grinding complex steels and alloys without wear of the grains of a borazon circle;
• Saving on the processing of products due to the durability of borazon circles;
• Impeccable sharpening quality.

Differences in the saws for sharpening circles

In reality, there are only 3 very different in the shape and depths of the otter of the profile of the drain:

• Woodmaker profile (WM) 10/30-6.5. About 80% of sawmills operate on this profile. Some of the manufacturers of the saw, most likely, just to differ somehow, declare their profiles (Munkforssagar MFS (UDDEHOLM) White, CR-400, HWSM, Diamond and others), but they differ from WM only in very small changes in the shape of the hollow and sometimes the size of the rear angle, which practically does not affect the saw process. For those who like to experiment, we make specialized and full-profile sharpening circles with winter 9/29-5.5 and summer 13/29-6.5 WM profiles that allow experienced driver to increase productivity in winter and summer.
• Small Simonds 10/29-5 Profile.3.
• Deeper profile Hakanson 10/31-7.3.

Useful information about specialized sharpening circles

The worst thing for the disk is the backlash of the machine. If they are (and they are on all ordinary sharpening and, accordingly, remain on those sharpening, which are simply, with the help of another fist, try to convert them to work with Elbor Dys. Then the disk begins to be unpredictably beaten on the front line, then on the back, respectively, breaking the profiles of the teeth of the saw. Then, the sharp ends of the teeth begin to cut the disk, significantly reducing its life, making economically ineffective sharpening on such machines.

Sharp circles: is the difference in corners important?

As practice shows, all talk about summer and winter corners, about the need to change the size of the angle when sawing various wood of wood is carried out when sharpening a saw on ordinary sharpening machines, when a narrow sharp.eyed stone sequentially passes every tooth of a saw. For various reasons, mainly due to improper preparation of the sharpening stone and backlash of the machine, the real value of the front angle when measuring an angle instead of the declared 10 ° can have values ​​from 8 ° to 12 °, and sometimes from 0 ° to 15 °. But most importantly, the spread of the angle values ​​from the middle on different teeth is usually usually ± 1 °- 2 °. With such scatters in the real values ​​of the front angle, conversations about the winter 9 °, summer 12 ° or certain angle values ​​for various woods are simply meaningless. Like any tool, saw it is good only when the front and rear angles, as well as the shape of the cavity on all the teeth of the saw, are the same, and the 10 °-th. The front angle and 30 °-thoming are optimal for work in winter and in the summer when cutting any wood.

We draw your attention to the fact that the front angle (compare the decoding of disc profiles and rice.2) all manufacturers of saws are the same. All of them differ slightly only the size of the rear angle, as well as the shape and depth of the hollow, which for sawing is not of fundamental importance. Many incorrectly say that the profiles differ in the height of the tooth, but they measure everything to the tooth height and always not near the front edge of the tooth, the height of which is approximately the same for all manufacturers, but at the deepest point of the hollow, that is, they actually measure the depth of the hollow, and not the height of the tooth. Also, for a single manufacturer, for technological reasons, the party’s profile is exactly repeated from the party to the party. Therefore, when the saw is installed for sharpening in a machine with a specialized sharpening circle for the first time, its teeth are first disclosed in a circle, that is, the saw is pulled 2-4 circles.Thus, you can get the necessary profile for almost any saw. All subsequent sharpening will be carried out in one circle.

The technology of using endless strip saws when sawing logs and boards are relatively young, they are used on sawmills, a little over 15 years, although they have been used in furniture production for a long time. This is due to the advance of the production of sawmill equipment, and the strip saws themselves.

On the market, tape saws are represented by many quite famous manufacturers, for example, such as Wood-Mizer, Fenes, Sword Lenox, Ro-Ma, Bahco and many others. Each of them offers its own profile of the saw tooth, justifying its advantages over the saws of other manufacturers.

The consumer chooses for himself, which companies are better to use, but all consumers have one common problem, this is not only sawing equipment, but also tape saws. Maintenance of an endless saw involves sharpening the canvas and wiring of teeth. If the wiring of the teeth of the saw does not cause technical problems, then the speed of cutting, the amount of loose circle, and the duration of the saw itself depends on the sharpening. The better the saw is sharpened (the initial tooth profile is preserved, the saw is sharpened without fueling the metal canvas, the entire profile is evenly protected and there are no passes in it, all the microcracks are removed) the longer it works. Sharpowing implies, restoring a worn tooth, cutting edges and removal of microcracks in the body of the saw that arose during its operation.

Types of stripping ribbon saws

Like any other tool, the strip saw is worn after each cutting cycle. This is a natural and inevitable process. That is why each drain type saw needs regular and qualified maintenance. wiring and sharpening. Such maintenance allows not only to maintain a cutting canvas in working condition, but also to significantly increase its life.

Increase the service life of the cutting canvas and significantly improve its functionality allows the correct wiring. The meaning of this operation is as follows: the cutting teeth of the saw bend in different directions, which allows reducing the friction force during cutting, as well as minimize the risk of closing the canvas with a processed part. Warring the strip saw can be performed according to three schemes, the choice of which depends on the type of material processed.

• With the so.called cleaning type of wiring, the teeth are bent in such a way that every third of them remains untouched. Such a scheme is used if the cutting canvas is used for the cut of particularly solid metals and alloys.
• The classic type of wiring involves an alternate extension of each cutting tooth.
• With wavy wiring, each cutting tooth is bent to a certain angle. It is clear that this type of wiring is the most difficult of all others.

To bend the teeth of the strip saw, special equipment is used to perform such a technological operation quickly and as accurately as possible. According to generally accepted standards, the maximum wiring of the teeth should not exceed 0.7 mm, but usually its value is in the range of 0.3–0.6 mm. It is important not only to choose the type of wiring, focusing on the characteristics of the material that has to be sawed, but also to perform it correctly, bending the teeth only by 1/3 or 2/3 of their heights.

After wiring, you can send a cutting canvas to a machine for sharpening tape saws. As statistics show, tape saws most often lose their functionality due to the fact that their sharpening was done incorrectly or untimely. The indicator that the strip saw needs wiring and further sharpening on the machine, is increased roughness of the surface of the saw. The need for such a procedure can also be determined by the appearance of cutting teeth.

The main elements of any grinding machines are circles, the choice of which, first of all, depends on the hardness of the material used for the manufacture of cutting teeth. In order to sharpen hard materials, it is necessary to use the corresponding circles. So, for sharpening with bimetal.type paintings, sharpeners consisting of borazon or diamond elements are chosen, and to put the saw made of instrumental steels in order, corundum circles are quite suitable.

Tools for sharpening the ribbon.type saws are chosen both in composition and in constructive performance. For different in design and the size of paintings in machines, circles of the following types can be used:

A set of Wood-Mizer devices for sharpening and wiring tape saws

According to the instructions, when sharpening a strip saw on the machine, you should monitor compliance with the following requirements.

• There should not be burrs on the surface of the tooth when sharpening it.
• The torching circle should remove the same layer of metal throughout the tooth profile.
• In order to avoid overheating of the teeth, when they turn them on the machine, a special liquid should be used for cooling.
• When sharpening, the profile and height of the processed teeth should not change.
• Must be monitored by the pressure that the circle of the sharpening machine for the tooth is provided. If you neglect this requirement, the pressure can be too significant, which can lead to annealing of teeth.

To facilitate the process of sharpening, the canvas of the strip saw is pre.twisted and in this state is suspended for 10-12 hours.

Sharpening of a tape type with his own hands has some features. In such cases, as a rule, the back surface of the teeth is sharpened, although if you use the manufacturer’s instructions or watch a thematic video, you can sharpen their front surface.

Methods of sharpening and equipment for it

It is necessary to decide which way of sharpening to choose, in a particular case, but there are two main schemes for the implementation of this process.

To perform such sharpening, automated machines are used, on which the circles of the elborus type are installed. It is very difficult to perform such sharpening with your own hands. Processing technology according to this scheme involves the choice of a sharpened circle for each type of tape saw. In this case, the size and shape of the teeth are taken into account. The sharpening itself has the following features: it is performed in one movement of the circle, while it simultaneously processes the surfaces of two teeth located nearby. With this sharpening method, it is possible to get a smooth transition at the base of the teeth. The largest minus of such sharpening technology is the need to use individual sharpening circles for the processing of saws with different characteristics of cutting teeth.

In this way, you can sharpen a tool for your pilrams and manually and on the machine. You can sharpen the edges of the teeth of the saw manually using a conventional engraver or a file. However, more qualitatively and quickly to make sharpening using this technology allow special machines. In this case, you will also have to select circles for strip saws of different sizes and with different configuration of teeth.

AZA-02/6 stripping device for sharpening tape saws.

The design of a standard sharpening machine includes the following elements:

• base;
• drives to ensure the supply of the saw canvas, rotation and swing of the grinding circle;
• device for fixing the processed tool.

The control of all movements of the sharpening circle and the saw tape is carried out using a special electronic unit.

When sharpening the teeth of the saw with your own hands (especially if the person who does this does not have the appropriate experience) can arise the following problems: the appearance of the irregular shape of the sinuses between the teeth and non.compliance with the angle of their tilt. The reasons for such shortcomings are, as a rule, in the following: the circle of inappropriate profile is used for turning, the irregular angle of its inclination is selected, the eccentric of the sharpening machine is removed.

Technical characteristics of the Astron FP sharpening machine

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All products of astronomers

Astron-8 machine.0 TLT ”is a professional tape sawmill for high.precision, fast and high.quality sawing of any, including hard.faced and highly tutored wood on a non.coded and craft board, timber and any other dimensional blanks with a minimum amount of waste on your sawmill.

200 kg saw a log with a diameter of 40cm per 9.5 minutes. At a low price, mini.pylorama is not inferior in performance by more expensive analogues. With its small size, simplicity of design and low price, the bandable machine has many useful functions: an electric-mechanical lifting of traverses, a hydraulic sawer tension, a very convenient clock line and, if desired, can be equipped with a mechanical feed.

Astron-9 machine.02beta is easily installed on any flat platform 3x10m. For gasoline sawmill you need only 1.5-2 liters of gasoline and a sharply drained saw.

The machine is easily transported. Installation time in a new place is an hour and a half.

The four-stroke engine “Honda-GX390” is easily started by t from.30 ° up to 30 °. Its service life is more than 5,000 mothers, with a timely change of filters and oil.

Details and nodes of gasoline and electrical versions are unified, if desired, you can install an electric engine, installation holes for this are provided.

Sharpening options

There are 2 ways to sharpen the teeth of the saw:

• Full.profile, produced on an automatic machine for sharpening tape saws. Borazone circle corresponding to the tooth profile, over 1 pass, restores the profile of the interdeter hollow and grind the cutting edges of the tool.
• Sharpening of cutting edges of teeth. Can be done manually or on a machine with a flat sharpening disk. In this case, the faces are focused, and microcracks are removed on the working surface of the tool formed during the work.

Teeth and angles of their sharpening

Ribbon saws have different geometry of teeth: it is affected by the properties and type of sawed material. So, to work with wood, a carpentry saw is used, for cutting logs, dividing. Each species, respectively, its own tooth geometry.

In tape saws intended for working with wood, the angle of sharpening is determined by the manufacturer, but the following is characteristic. the harder the material, the more the front angle should be less.

For saws with a constant pitch of teeth when working with metal are characterized by two forms of teeth. “positive front angle” and standard. Standard teeth are used to work with thin.style materials, and teeth with positive front angle. for sawing thick.walled metal.

For blanks with a small thick walls (pipes, leaf rental), saws with a small pitch of teeth are used. otherwise there is a risk of breaking or damaging a tooth. It is better to work with thick workpieces with a small number of teeth per inch.

To remove the effect of oscillations, a number of saws are made with a variable pitch of teeth.