Proper sharpening of strip saws with a diamond circle. Runs for divorce of teeth

DIY DIY DIY DIY DIY and Sharpening

Ribbon saws are an integral element of the machines of the same name designed to process various materials. The cutting details during the work are constantly subjected to enhanced loads, as a result of which they are blunting and from time to time require sharpening. Sharpening of a strip saw can be carried out in a specialized workshop or at home, subject to a certain technology and the availability of appropriate devices. In order to properly sharpen the saw canvas, you need to know the features of its design and understand the differences of tape cutters. In our article, we will tell you how to properly sharpen a blunt tool and return it to its former acute.

First of all, the most significant plus. the width drank the tool. Indeed, it is difficult not to notice that it is much smaller than that of disc tools. And if this moment is a trifle for sawing budget wood, then for cutting valuable wood and elite material, it is better to use, for a clear reason, tape saws.

And then, in addition to this tape saw, cutting any blanks is possible. In addition, the tool has a decent speed of operation and high quality cut surface.

But, of course, to feel all these advantages, it is necessary to responsibly approach the sharpening and wiring of a strip saw.

Why saw a drink poorly?

This may be the result of a large angle of sharpening of the tooth, which is accompanied by a saw in the wood with a jump upward. Then, usually sawing occurs normally to the very end, but at the exit of the log the saw falls down. This sawing regime is called “squeezing”, since the saw is squeezed. Output-reducing the angle of sharpening of the degree by 2-3.

With a significant angle of sharpening and insufficient divorce, the saw at the beginning of the entrance to the log makes a leap up and the shape of the board turns out to be a curve in a “pattern of a saber”. The quality of the board is restored by a decrease in the angle of sharpening the degree by 2 and an increase in divorce. The board will turn out to be similar “to the saber” and when “diving” a saw down. This is a joint consequence of a small angle of sharpening and insufficient wiring. You can get out of this position by an increase in the sharpening angle by two degrees and an increase in divorce.

If the board is plentifully covered with chisels loose to the touch, then this signals a small divorce, which requires an increase while reducing the angle of sharpening.

I drank in the form of a wave with a sharp saw is caused by too small a divorce, which must be brought to a normal value.

Swiming a dumb, never rewound saw will lead to the fact that it will crack through the tooth hollows. The same thing can happen if you try to dissolve the tree with a saw, the divorce of which is insufficient for this work or continue to saw with a blunt canvas.

Cracks from the back may form on the saw, when the distance between the rear stops of the guide rollers and the back of the canvas is too large.

The phenomenon of “rolling” sawdust on the canvas is observed when the teeth of the saw are not too divorced and there is no desired volume of air in the sawdrop. In this case, the saw is heated due to friction about the sawdust, which leads to a bit of wood dust on the saw blade.

If the “rolling” of the sawdust occupies the inner surface of the tooth, and the saw canvas is clean, this is explained by a number of reasons: poor sharpening (too much by serving or thick filming of the material, leading to poor quality of the surface of the tooth hollows), an overly huge sharpening angle saw.

Sometimes cracks are observed from the sidelines of the teeth. This usually happens when a lot of metal is removed during one passage during one pass, which leads to overwhelming tooth edges.

Many problems will be able to avoid if you pay enough attention to the embankment, constantly and carefully refuel it.

It must be remembered that no matter what a good machine is used for the dissolution of wood, this is just a drive for a saw. The quality and efficiency of the cutting of 90% is associated with the proper service of the saw and only 10% of the total condition of the machine.

The sharpening angle is determined by the angle of the tooth edge from the vertical line. The desired angle of sharpening in most cases is 10-12o. If solid rocks and frozen wood are sawn, then the angle of sharpening should be 8-10o. To saw soft rocks, it increases to 12-15O.

Renting of teeth greatly affects the properties of the cutting edge of the tooth. It must be remembered that the sharpening of the teeth reduces their height, and therefore wiring.

Sharpic indicators of a tape type saw in the function from the breed of the disconnected wood are shown in the following table.

These tabular data are not a directive nature, therefore, an individual selection of tool parameters is needed for each wood breed. The quality of the sawing is associated not only with the successful selection of these indicators, but also from the place where the wood is used, which is delivered here for sawing. The fact is that even the trees of the same breed can have different density and resinousness due to the region.

To give the strip saw a lot of resistance and get high.quality cut, it is necessary to maintain the canvas with water when sawing trees with a large mol. Pilam for sawing trees with small molum is needed soapy solution for wetting. In the frost, it is best to moisten the saw with diesel fuel.

Advantages of the strip saw

First of all, the most significant plus. the width drank the tool. Indeed, it is difficult not to notice that it is much smaller than that of disc tools. And if this moment is a trifle for sawing budget wood, then for cutting valuable wood and elite material, it is better to use, for a clear reason, tape saws.

And then, in addition to this tape saw, cutting any blanks is possible. In addition, the tool has a decent speed of operation and high quality cut surface.

But, of course, to feel all these advantages, it is necessary to responsibly approach the sharpening and wiring of a strip saw.

Material for the manufacture of tape saws

The strip saw for wood is made of instrumental steel with a hardness of 45 HRC, and for metal it is the basis of steel B2F, 9XF, C75, UDDEHOLM UHB 15, and others, for carbon steels, the cutting tool is the tool steel, while hardening of teeth is carried out for which are used high frequency currents.

I would like to note that for cutting metal you can also use a bimetallic saw, which after hardening has a hardness of 65-69 HRC.

Having sorted out a little with the materials from which the strip saws are made, we smoothly move on to the teeth of the cutting tool and their sharpening.

Launching a sharpening machine

You have prepared a machine and a saw to start sharpening, now let’s proceed to the very process of sharpening the strip saw.

First of all, turn on the feed at the lowest speed. To do this, there are a toggle switch to turn on the engine and the supply speed regulator. It reduces or increases engine speed.

Using a screw on the supply rod, take the saw tooth forward or backward. And we follow the stone with the flat side (without a chamfer) began to touch the direct side of the tooth.

Then we turn on the second toggle switch, which sets the engine with a stone. Little by little without sudden movements, you begin to lower the stone. With the help of a screw rod that fixes it, until the stone passes the from one tooth to another.

In no case should the tape be blocked, so try not to lower the stone much.Also push the stem of feeding back or forward otherwise the stone will simply “eat” the tooth. Sharpening of strip saws, should be smooth according to the factory profile of the tooth.

Manipulating the feed screws and the rod of lowering the stone must achieve the complete absence of burrs on the tip of the teeth. The finished work of the machine can be considered after passing the strip saw of at least two circles.

How to sharpen a strip saw

Immediately note that if there is no experience and skills of performing such work, it was better to entrust the sharpening of sawing professionals. Violation of the geometry of the teeth of the cutting edge, the appearance of scale on the metal or incorrect wiring significantly reduce the life of the canvas.

Having decided to sharpen the strip saw with your own hands, it will be useful to first familiarize yourself with key definitions, the knowledge of which may be required in the process. So, for the correct formation of the cutting edge, it will be required:

• wiring. deviation of the teeth from the plane of the main canvas of the saw;
• tooth height. the distance between the upper point and the base;
• Step-the distance between the teeth, usually varies within 19-25 mm.
• angle of sharpening. depends on the target purpose of the tool; For example, the recommended angle of sharpening of the carpentry is 35 °, dividing-18-22, designed for sawing a beam-no more than 15 °.

The angle of sharpening is determined by the manufacturer, therefore, with independent editing of the saw, it is recommended to adhere to these parameters.

Let us give a detailed instruction that will help to properly sharpen the closed saw without resorting to the services of specialists.

Wiring

Divorce of tape saw on wood. this is the first stage of restoration of the profile of the cutting edge. During operation, the location of the teeth may change, so the proper geometry has not yet been achieved, it makes no sense to grind the saw part.

• classic. teeth alternately deviate into the right and left side;
• cleanser-1st and 2nd teeth deviate in different directions, the third remains even. This profile is created for sawing solid materials;
• wavy. the most difficult option resembling a wave in shape. Here, each tooth is given an individual form, and this type of wiring is usually performed only in specialized workshops.

It should be noted that during the wiring, not the entire tooth is enveloped, but approximately 2/3 of the upper part. The procedure is performed on a special machine for wiring tape saws. The cost of such a tool is quite high, because it is bought if you need to establish several tools. Its availability may become the basis of the sharpening business.

Of course, the first time everything may not work correctly on the first time, therefore, at least the profile geometry should remain the same as before the start of work.

Sharpening

This is the main stage of editing the cutting edge, which can be performed in two ways.

Full.profile sharpening of the saw is performed by the Elboron Circle installed in a special sharpener machine.

This is a fully automated operation, which is used by professionals. The operation of the machine for sharpening tape saws on wood is controlled by electronics, and the sharpening circle in one pass processes the entire tape. The disadvantage of this method is that the Elbor Circle is selected individually for the saw profile, therefore, for the editing of different tools, the grinding element should be present in the assortment.

Sharpening of teeth is performed manually or on specialized equipment.

In the first case, you can restore the severity of the teeth in the shortest possible time, but the work requires certain skills. In the second-painstaking work: 4-5 movements on the verge of each tooth.

For automatic sharpening, diamond, elborus and corundum circles are used

It is important to understand that when this procedure is performed, the teeth are given only the acuity created after wiring the geometry canvas should remain unchanged

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How to properly sharpen the canvas?

According to statistics, more than 80% of cases of rupture of the device occurs due to non.fulfillment of the techniques of hidden paintings. The need for sharpening is revealed visually. according to the appearance of the teeth themselves or the state of the place of cut (increased uneven plane).

Stones for hidden tape canvases are selected based on the stiffness of the teeth. Corundine stones are used to harness products from carbon and alloyed steel. Bimetall canvases require borazon (elborus) or diamond discs. The configuration of the sharpening disk for paintings must be determined by taking as a basis the characteristics of the tool. It is plastic, flat, cup, profile.

Prior to the start of work, it is advisable to give the canvas hang in the twisted position 10-12 hours.

DIY Conditions for sharpening with your own hands:

• ensuring the systematic removal of the metal in the shape of the cross section of the tooth;
• prevention of excessive pressure of the disk (this is able to cause anneal);
• ensuring the integrity of the height and shape of the tooth section;
• the indispensable presence of fluid for cooling;
• Monitoring the absence of bully.

By and large, not paying attention to the abundance of the rules and conditions, these devices are rather undemanding in the issue of sharpening. You can deal with them both through a specialized sharpener for tape paintings, and manually. In addition, you can use circles different in configuration and substance for processing.

Before hiding the tape canvas, it is advisable to familiarize yourself with the key methods for performing this procedure.

Full.profile grinding

This method is considered especially high.quality, performed on automatic equipment. The elborer (borazone) disk, exactly selected according to the configuration, the only passage processes the entire interdental cavity, coupled with the corresponding planes of adjacent teeth. Obtaining an uneven configuration at the base of the teeth is excluded. One of the souvenian of such sharpening is to constantly have a specific number of spheres for paintings for various purposes at hand.

Taking the edges of the teeth

Can be performed on specialized equipment or manually.

If special equipment is selected, then it is necessary to choose a circle with knowledge of the matter. as a rule, these are samples of a flat shape. By and large, it is advisable to contact professional assaults exclusively in situations where the scale of work is quite large. Irregular “household” work is preferable to perform with hands. through an engraver or on an ordinary machine. While working for your own safety, you must certainly use a mask or goggles.

Common mistakes

If a person first tries to sharpen the saw, it is difficult for him to fulfill all the requirements and remember the nuances of the technological process. However, violation of these rules leads to the fact that the efficiency of using a strip saw is noticeably reduced, the load on the canvas increases, which leads to a premature break.

Professionals recommend that you make such mistakes:

• With mechanical sharpening, the abrasive stone is located incorrectly relative to the profile of the saw. In this case, the sharpening of the teeth will be uneven;
• Excessive efforts when contacting the saw and sharpening circle. As a result, the metal overheats, the scale appears, which leads to premature wear of the cutting edge;
• There are burrs on the canvas. After sharpening, all roughness must be eliminated, otherwise microscopic cracks will appear during operation on the metal;
• Application of their own sharpening angles. Many inexperienced masters believe that only acuity is important for the teeth of saws, therefore they shamelessly violate the geometry of the profile of the cutting edge recommended by the manufacturer. It is important to understand that the shape of the tooth has been tested for years, trying to experiment here is useless.

Instead of conclusion, we add that each strip saw has a certain resource, so the canvas cannot be sharpened indefinitely. Manufacturers guarantee the correct operation of the tool until the total width of the canvas decreases to 65% of the original size.

In order for the processing of various materials to be carried out correctly, it is necessary to care and monitor the condition of tape saws. For this purpose, machines for sharpening and wiring tape saws are used. Timely care will ensure prolonged operation of tools.

The design of the strip saw

Ribbon saws are a special continuous design, which is characterized by the presence of cutting elements on one side. This is a cutting element with which wood work is carried out. Most often, tape saws are used in a variety of tape fiber canvases. With their help, the cutting of various details is carried out. With the help of these paintings, a fairly high cut quality is provided. All this is provided only if the saw has a good divorce. Also, the tool must be served in a timely manner.

Ribbon saws are made of super.strength metal, which provides not only high cut quality, but also the duration of the saw of the saw. Teeth have a universal angle, which allows the most qualitatively carried out the sawing of the material.

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.

Setting up of tape.saw equipment

The working and high.quality operation of the carpentry depends directly on the equipment settings. There is an installation adjustment scheme. First, the wheels are installed parallel to each other. Then the fluoroplastic washers are installed, necessary to prevent vertical displacement.

The first time the launch is performed without guides. At this stage, they check the smoothness of the launch and cleanliness of the engine, and then the test cut is already carried out using the canvas, but with minimal loads. A block with guide tapes is used to work with increased load. This design consists of two halves that are installed along the line of the cutting canvas.

Before, masters did not do with their own hands not only machines, but also a cutting canvas. It is difficult to close the strip unit in the ring yourself and it requires at least some initial experience in assembling the machine. Manual method is carried out and sharpening according to the template. All this can be done yourself by saving your money, but the modern market is simply filled with all kinds of devices and details that improve the quality of materials processing or make the equipment multifunctional. The main thing in this matter is to remember about safety measures, because production models or homemade are a great danger to human health.

Taking methods

Sharpening of a tape saw on wood can be performed in one of the following methods:

Full.profile turning has the following advantages:

• operations are carried out with high accuracy, as they are performed on automated machines;
• A special form emery passes through the entire surface of the space between the teeth simultaneously with the planes of neighboring cutting edges in one movement;
• Verses of the correct shape without angularity are formed.

The sharpening of the faces can be implemented in the following ways:

• A machine with a flat abrasive circle or a special shape is selected, depending on the profile of the cutting edges.
• At home, it is recommended to carry out processing with an engraver or ordinary emery suitable sizes. For work, you need to put on glasses and gloves.
• In the absence of tools from paragraphs 1 and 2, the use of supers is allowed.

Sharpening of a tape saw on the machine

Types saw

Ribbon saws can be distinguished by the type of teeth, taking into account the configuration of which the necessary sample for processing material of a certain type is selected. The selection of saws of the saw tooth teeth is based on the characteristics of lumber, in particular, on the parameters of its hardness: the denser the wood, the smaller the front angle of the tape incisions and the step between them.

Observing this rule, it is possible to significantly improve the quality of the rapids and extend the operational period of the tool.

The sawing of thin materials is usually carried out using a saw canvas, which has a standard or small step between the cutters, otherwise the risk of damage to the working tool increases repeatedly. The saw with a big pitch of the teeth is designed to cut metal or wooden thick.walled blanks with it, which must be fixed tightly before proceeding with the processing process.

Working rules

If you decide to sharpen the strip saw at home without resorting to the services of a specialist, read the rules for performing this procedure.

To perform the correct pointing of the strip saw, you will need a special sharpening machine and the instructions given below. The configuration of the sharpening circle, which can be flat, profile, plate or made in the form of a bowl, is selected depending on the technical characteristics of the saw. We draw your attention to the fact that strict adherence to safety rules will protect you from injuries, and the tool from breakdown. To protect the respiratory tract from characteristic heavy dust, work must be carried out in a respirator or a special mask. So, let’s move on to the phased performance of the work.

• Starting to sharpen the strip saw, be sure to check the sharpener for uneven abrasion and all kinds of defects, the presence of which will not allow the removal layer of metal and lead to undesirable consequences in the form of damage to the cutter.
• To tighten the dull tool without jerks and a sharp movement of the tool on the surface of the abrasive circle, otherwise the structure and height of the teeth will be broken.
• The third rule is more likely to concern the mechanism of the grinding circle, which should contain a coolant that prevents the overheating of the unit. Such an option will protect the sharpener from failure and will help to carry out accurate sharpening of a saw blade.
• Upon completion of work, you must carefully inspect the surface of the saw and make sure that there are no hooks and chips on it. If such defects are detected, the saw must be sharpened on the circle again, bringing it to the machine at a certain angle, or bring to the necessary parameters on a grinding machine.

Turning methods

Sharpening of tape saws on wood is performed in two ways: on professional equipment (full.profile) or by focusing faces of incisors. In the first case, we are talking about the most accurate machine of sharpening, during which the entire process is carried out using automation. In order to sharpen the tool properly, here it will be enough to choose the main element of the machine. the Elbor Circle, everything else is controlled by electronics. The cost of such work is quite high, and it is hardly suitable for those who often face the need to sharpen the saw due to their intensive use, unless, of course, the master owns such a machine. It is worth noting the fact that buying a set of abrasive circles for all types of tape saws also requires additional costs, and for one.time manipulation there is no sense in acquiring it.

The second method involves exclusively sharpening of the teeth, and can be performed both in manual and automatic mode using a special device. For proper manual sharpening, the presence of an engraver and certain skills of a person who works with him is required. In order not to spoil the metal and avoid damage to the teeth, the movements of the master must be accurate and fast enough. For the first time proceeding to such procedures, it is advisable to carry out a trial sharpening on an unnecessary sheet of metal to avoid damage to an inconsistent tool.

Proper sharpening of tape saw canvases involves the processing of the rear and front faces of the incisors, although most masters performing this process manually are limited exclusively by pointing the rear edges. This method will allow the use of the tool for its intended purpose, in addition, it is implemented much easier than double.sided sharpening. The focus of the front edges can be carried out correctly in the presence of a sharpener machine. Here, as well as in the case of full.profile sharpening, it is necessary to choose the right size of a sharp.circled circle, and then the cutting tape will gain the necessary sharpness. There is a winter method of focusing the tape, in which the angle of sharpening is 90 degrees, and instead of water, a coolant or diesel fuel is poured into the machine.

Wiring

Unfortunately, standard sharpening is sometimes not enough to return the saw the necessary degree of severity, an important condition of which is the size of the cutting of the incisors, called in the professional language wiring. The essence of this condition is that at the time of sawing when the tool is in contact with lumber, the friction force is reduced, and the material could freely move between the teeth of the canvas.

In most cases, standard wiring is used, during which alternating extension of the incisors in different directions relative to each other is about a distance not exceeding 0.4 mm. It is quite possible to breed a saw at home, while it is necessary to exercise strict control over the angle of deviation of the cutting elements. it should be the same.

There is also a protective wiring to which they resort mainly in professional workshops. With this procedure, two incisors should be bent at different angles, while the third tooth remains not touched. No less complicated is wavy wiring, and its essence is fully reflected in the name. In this case, the teeth are delicately bent in one direction and close tightly, and the tape acquires a wavy configuration. In the video you can see how ribbon saw is carried out at home.