What is the lubrication of a strip saw for. We need a strip sawmill? Here are recommendations…

Recommendations for the operation and maintenance of tape saws

This article was written to help you better understand the strip sawing and get the greatest return on your tape.saw installation (sawmill).

The technology for using narrow tapes in sawing is relatively young. It has been used on sawmills for more than 15 years, and even less on installations of the second row, although in furniture production ribbon saws were used for a very long time.

Technology, both in the production of the belt canvas itself and in the production of tape.saw installations, goes forward quite quickly, allowing users to achieve all the best and best results.

The main types of tape canvas

On small sawmills, screes and split saws, regardless of the number of heads, canvases of 25, 32, 38 and 50 mm wide are mainly used. Basically, the market has a canvas of two main thicknesses. 0.035 ”(0.9 mm) and 0.042” (1.1 mm). Naturally, there are canvases of other sizes, but they are mainly used in specific cases.

Carbon steel canvases are most widely used in sawmill. These canvases are distinguished by the type of heat treatment that they were subjected to:

• Constant Hardness. a canvas with equal hardness over the entire width of the canvas. carbon in such a canvas is not high, and this does not allow to harden it to hardness in more than 45-48 units on the HRC scale. Such a canvas works well on the pulleys of small diameters. However, it has to be dragged quite often.
• Flex back. Hard Edge. a canvas with a flexible body/hard tooth. This canvas is called and so and so. In the production of this canvas, a tape with increased carbon m is used, which allows you to harden its tooth to HRC 63-65. Only the upper half of the tooth is usually subjected to hardening, which leaves the saw body almost not hardened and flexible quite flexible. Firmness of the saw of the saw-HRC 30-33. The advantage of this type of saw is that it holds sharpening better, remaining quite flexible. Sometimes manufacturers pump up a narrow strip on the back of the saw, this allows you to achieve straightforwardness of the canvas. Do not confuse such canvases with paintings type Hard back.
• Hard back. a canvas hardened throughout the width. This is the most technologically advanced and complex type of tape canvas in production. Its tooth has the hardness of HRC 63-68, and the body HRC 48-53, and the saw body is subjected to hardened in a stretched state. The high hardness of the tooth provides good resistance to a blunt (the canvas is longer between the overflow), and the increased rigidity of the body of the canvas allows you to saw on large feeds. These saws saw evenly and right on those supplies on which any other canvas would have long portrayed the “Amur wave”.
• There are also saws with all kinds of attacks and surfaces, as well as the so.called bimetallic saws. All these types of saws combine excellent flexibility with the exceptional resistance of the tooth, but their high price transfers them to the category of exotic products, and we will not waste time on their description.

How is the strip saw wiring?

With prolonged use of the teeth, the location changes. Before hidden the working canvas, it is necessary to return the primary position to them. Stripping tape saws are used just for this. They conduct it in one of the 3 ways:

• Alternating deviation of the teeth to the left and right. Used for a universal saw canvas.
• The deviation of each 1st and 2nd tooth left and right, respectively, every 3rd remains even. This method is called stripping and used for saws that process hard materials.
• Giving each tooth an individual wave.like shape. Wavy ribbon peeling is carried out using special equipment. As a result, saws can work with thin materials.

Keep in mind that the teeth are not completely awarded. Only 2/3 of the upper part reject. Preparation for sharpening can be carried out manually, but a more suitable and reliable option is to use special machines.

How sharpening goes?

Sharpening is the main component of the process of restoring the cutting edge. The used equipment for strip saws determines the method of the recovery process:

• With the help of an elborus, diamond or corundum circle. The circle is selected for a specific saw profile, that is, for a tool with a certain step, different types of the Elbor Circle are used. It is installed in a semi.automatic machine. This is a professional way, for the implementation of which you will need complex equipment and a master who can manage.
• With an emery circle or a file. This is a manual method of wrapping, which involves at least 4 touches of a sharpener tool with a line of each tooth. The method is more time.consuming, but it can be implemented independently.

After the procedure, it is important to grind the saw. Sharpolish equipment for strip saws must be selected according to the skills and characteristics of the cutting canvas.

Emulsion for tape saws

The correct ratio of oily and cooling in crook for strip saws is very important to achieve optimal operation of the tape canvas and the entire bandable engineer. You can get this balance, adhering to the correct ratio from the very beginning of the work or periodically adding a concentrate. The value of the ratio is indicated by the manufacturer with the type.

For example, if the initial recommendation of the estimate of the emulsion 10 to 1, then this means that the manufacturer recommends for the optimal efficiency of 10 parts of water to 1 part of the coolant concentrate. You can never pour the concentrate of coolant directly into the tank for the lubricants of coolants of the tape.saw machine. First you need to mix the concentrate of coolant with water in a clean container, and then pour it into a clean tank for coding with a tape.saw machine. Since the water in the tank for coolants evaporates through heat transfer, the tank for lubricants of cooling liquids should be replenished. The replenishment emulsion requires a lower relationship than the initial connection, because the concentrate of lubricants of coolant does not evaporate as quickly as water.

To maintain maximum efficiency, you need to periodically measure the concentration of coolant using the brick refractometer. The ideal location for taking the sample is a nose of the head of the coolant. Comparing the existing value of the ratio of the co.making emulsion to the previous ones, it is possible to determine the attitude to replenish. It is necessary to mix at least three parts of the water to one part of the concentrate of lubricants of cooling liquid and mix it well before pouring the coil for tape saws into the machine of the machine.

Innings

The size of the feed (and pressure) is selected depending on the thickness, shape and type of cut material. If when cutting on a tape.cutting machine, automatic supply is used for a new sharp strip canvas, then it must be periodically changed and controlled to take into account the gradual wear and gear of the teeth of the tape canvas, which will lead to poor cutting quality on the workpiece. Burnts and irregularities on the edge of the cut.off workpiece usually indicate that the metal has become too hot. This happens when both sides of the workpiece are not completely fixed, and the ribbon saw of the saw is almost at the base of the cut. If the tape.saw machine has a guide, then the operator should know about the size of the feed and be able to regulate it.

Check that the workpiece, reliably clamped on both sides, is unable to move during the cutting process. If on the machine you can adjust the clamp force, then use the maximum clamp force for stable pressure, but without distorting the geometry of the workpiece. General vibrations occur when the cut side of the workpiece is incorrectly clamped. When the tape canvas approaches the end of the cut, the mass of the cut blanket can be pulled out or slightly move the general workpiece from the clamp. If there is a cutting of a rectangular workpiece, then it must be placed vertically, and not for the larger plane. This reduces the contact area of ​​the tape canvas with the workpiece, leading to a more effective segment and less roughness of the cut surface. For better stability of the strip canvas in an upright position, the guides should be as close as possible to the workpiece. If the distance is too large, then the strip canvas can “wander” during cutting, especially with too much serving. Modern models of tape.saw machines have carbide guides in addition to the rollers to help maintain the blade in an exact vertical position.

Setting up a tape.saw machine

All mobile parts of the bandable.saw machine should be well lubricated, then all the sliding guides will work without additional resistance. This guarantees the preservation of a linear size with repeated cuts. Fitings are lubricated with high.quality paste, and other machine surfaces. general industrial lubricant. Check the bearings on the wheels to make it fitting to the plane of the tape canvas. A worn bearing can make the tape canvas turn a little, creating a mowing cut movement. Depending on the design of the tape.saw machine, you may have to replace the entire assembly of the wheels. Be sure to follow the recommendations and technical requirements of the manufacturer. Inspect the cleaning blade of the brush to guarantee that it is in contact with the tape canvas. If the metal bristles are erased, consider the replacement with a brush with a nylon brush brush. Nylon brushes do not wear out so quickly, because the bristles are flexible, they can last longer.

Curve cut can be a sign of vibration and dedication. If the banding machine is old, then check the wear of the drive. An echoed drive can cause vibration in the clip system, which can be transmitted to the tape canvas. This produces to a wavy cut. Typically, the drive cannot be replaced, or the cost of its repair is almost equal to the cost of a new tape.saw machine. If it is time to replace it, it is better to choose a new high.quality band saw. Do not allow the price to be your only parameter with this choice. If the drive of your banding machine is still working, then you must cast a serious look at how you serve the machine. In most cases, the cut cut can lead to an incorrigible marriage. In other cases, you will have to exercise full control. Is the tape canvas really? Is the tension of the strip is really too weak? As a result, understanding all these above five key factors, you will certainly reach a quality cut every time.

Characteristics of the tape saw

Some tape drifts are equipped with a coolant supply system that sucks and forth drains the coolant into the tank for coolant. As a rule, a tape.sawer machine without a system for feeding coolant should be used only for cutting easily processed materials, such as soft steel and aluminum. On a vertical or horizontal banded.saw machine, an oil fog system can also be installed to provide grease to reduce friction heat. However, the bluling system does not provide evaporating cooling of the tape or blank, therefore, the cutting rate should be reduced by 15%-20%. Dry segment without the use of coolant requires half of the usually recommended cutting speed.

In general, the low cutting rate and high working feed pressure is required for cutting solid or hardened metals, as well as a significant value of the high pressure of coolant. On the other hand, the cutting of easily processed metals allows you to work at high cutting speed and low pressure pressure, requires a greater degree of cooling. The lubricating coolering liquid absorbs and disperses heat by evaporation during the cutting process. Since the release of heat grows during cutting, the tape canvas of a larger cross.section will become more hot much slower than the tape canvas of the smaller cross section. Synthetic coolant supplied to the cutting zone with a free flow is more effective than oil coolant, and is more suitable for cutting blanks with large transverse sections.

Ribbon cooling methods

The most effective method of using coolant for surgery. High.performance metal cutting on a tape.sawer machine. It is a system for supplying coolants flowing from above through the guide tubes from the side of the tape canvas in the cut blanket and the side of the tape canvas out of it. The use of this method of supplying coolants effectively reduces the friction heat and provides maximum lubricant when the strip canvas passes through the guides along the cut off the workpiece. This guarantees that coolants effectively enters the cutting zone. For small tape saws, which are not equipped with a tank for coolant, a small and relatively inexpensive oil fog system can recoup itself in a short period of time. The constructive shape of the tape canvas often leads to a high loss of coolant when using the method of supplying coolant through guide tubes. The angle of supply of the guide tube and the small thickness of the channel can only be blocked by the strip of small cross.section, thus, little heat is taken from the cutting zone. Consequently, the oil fog system is usually more effective in ensuring a reduction in friction heat from the tape canvas. It is also very important that both sides of the strip canvas should be lubricated evenly. If one side of the tape canvas is not greased enough, then the strip canvas will usually take in the direction of the more lubricated side.

Oil coolant can contain any combination of fatty oils, sulfide materials, chlorinated materials and EP supplies. These additives are added to allow usually incompatible oil components to mix with water. This compound does not remain constant and can be divided into different layers to different degrees, especially when it is not used in work for a long period of time. Oil coots with the lowest initial cost of additives (components) should be correctly selected taking into account the desired viscosity and lubricating characteristics. It is necessary to regularly remove any drops of oil coolant, which are periodically separated from the main stream in order to minimize the growth of microorganisms that cause poor smell, as well as clean the painted and cooked parts of equipment. Semi.synthetic co.stroke. fluids based on a synthetic product, which, as a rule, contain some oils to add oilyness (lubricant function) and protection against corrosion. They combine some advantages and disadvantages and oily coolant and completely synthetic coolant. As with oil coolant, semi.synthetic coolants are susceptible to stratification (stratification), which causes poor smell (growth of microorganisms) and reducing the life of the pump for coolant. Due to the content of petroleum products (depending on the additive used), the cutting parts of the tape saw should be well cleaned before they are cooked or painted during repair. Synthetic coolants are not relaxed in a tank for coolant during prolonged downtime. As soon as they mix, they form reliable compounds, and their concentrate is no longer noticeable in the mixture. Synthetic co.stroke. Super.resistant concentrates without oil. They usually contain EPs and corrosion inhibitors. Synthetic coolant for mixing in water with high Mineral substances. Unexplored synthetic coolants are non.toxic and harmless to the environment. As with any type of coolant, as soon as they become mixed with metal shavings and flow into a tank for cooal, they need to be stored (or disposed of), as dangerous waste according to local laws. However, due to the long use of synthetic coolants, most likely the costs of recycling will be very economical. High.quality concentrate of synthetic cooal cooker has a higher initial cost than oil coolant. This is obtained due to today to provide better work in a wide circle of cut off materials and reduce the problem-leaf-leaf for a trimmer that takes a long time. Production enterprises find this more profitable in the long run.

“Tape sawmills”. Work and device:

2.1 main nodes and parts of tape sawmill:

• A bed that moves along the rail guides in a horizontal direction;
• Frame saw;
• The mechanism lifting the saw frame;
• Electric cabinet;
• Log clamp;
• Mobile slider of the driven pulley;
• The leading pulley;
• The pulley of the led;
• Wedge.rephid transmission;
• Rail guides of tape sawmills;
• A mechanism pulling the strip saw;
• Installation connector of the strip saw;
• Pulley pulley pulley
• Tank for co.chehm
• The guide saws are motionless
• The guide saws are mobile

Stanno of the tape sawmill has p. figurative shape and soles with rollers of moving the saw frame along the rails and felt brushes, which are cleaned of guide from sawdust. The lift of the saw frame is carried out by two sliders located on the racks of the bed. The movement is carried out by a bilateral, synchronously connected chain transmission, driven by an electric motor, through a gearbox.

The frame has two channels, which are located in parallel and interconnected. The leading saw pulp is motionlessly fixed at one end of the frame, which has the possibility of longitudinal movement. The saw of the tape sawmill is pulled by the spring-screw mechanism, the spring damps the thermal expansion of the saw tape. In the manufacture of tape sawmill, a 35 centimeter.width tension is rated. The risks on the tensioner and the puck are equal to the tension force of 525 kilograms. In the front beam of the tape sawmill and on the slider of the driven pulley there are two locks for the picking and installing saw tape. On the brackets of the frame located in the middle of the frame, two guides of the strip saw (mobile and motionless) are installed, which are equipped with support rollers and the adjustment system and the bar. Twisting the moment is transmitted from the engine engine to the leading pulley. wedge.rephid transmission. Backet for coolant is fixed on top of the protection of saw pulleys. The supply of fluid is regulated by the taps located on the tank. The tape sawmill control panel is located on the upper jumper of the machine.

Directed collapsible from 3 sections, which is convenient during transportation. Below are supporting plates into which anchor bolts are screwed. Top guides of the strip sawmill of the log of logs. The log on rail guides is fixed with four screw clamps and an emphasis that provides 90 degrees.

Regulation of saw pulleys

3.one. The machine provides for the adjustment of the position of both pulleys in relation to each other in horizontal and vertical planes. It is necessary to ensure that the strip saw when tension is 6-8 kg/mm ​​kV. In the section on one branch did not go from the rims of saw pulleys.

3.2. First of all, the pulleys are adjusted in the vertical plane, exposing them at right angles in relation to the saw frame. To do this, on the slider of the driven pulley, the ML0 bolt is screwed from below to its axis, and on the leading pulley, adjustment is carried out due to the installation of seamy washers or plates. This operation.It is produced by the manufacturer.

3.3 To regulate the position of saw pulleys of the horizontal plane in the ends of the frame from the leading pulley, two ML2 bolts are screwed, and to the axis of the driven pulley. one.

It is necessary to adjust the pulleys of tape sawmill in the following sequence:

3.3.1 Turn off the power supply machine on the control panel.

3.3.2 Open protective casings of saw pulleys.

3.3.3 install the strip saw on the pulleys so that it protrudes beyond the edges of the pulleys by a height of the tooth plus 2-5 mm.

3.3.5 pull the strip saw, turning the nut of the tension mechanism to the value of the optimal type for this type of ribbon saw (at the rate of 6-8 kg/mm ​​kV.).

3.3.6. Rotating with a hand for the driven pulley along the sawing (counterclockwise) you need to look at what position the tape saw will take on the pulleys. If the tape runs out to the equal size from both pulleys, then without weakening the saw tension, release the locking nut of the ML6, fastening the axis of the led pulley to the saw frame (slider of the saw frame).

3.3.7 Then release the M12 locknut and plunge the ML2 bolt to a small size, then tighten the M12 counter and the lock nut M16.

3.3.8 Repeat paragraph 3.3.6 and when the tape is running, repeat the adjustment until the correct result is obtained.

3.3.9 If the tape runs inside to an even value, then it is necessary to loosen the tension of the strip saw.

3.3.ten. Release the locking nut of the ML6, the M12 Ringia and turn out the M12 bolt to a small size, then tighten the m12 and M16 nuts and M16.

3.3.11 If the tape took the situation according to the instructions, then the adjustment is performed correctly.

3.3.12 If the strip saw immediately runs off the leading pulley, then the adjustment should start with it.

3.3.13 For this, depending on the direction from running the tape (outward or inside), release the left or right locks of the ML6 and adjust in the same sequence as on the ledness of the pulley.

3.3.14 after adjusting all the nuts tighten.

3.3.15 Close the doors of the casing of saw pulleys.

3.3.16 Turn on the email machine. energy on the control panel.

3.3.17 Turn on the drive of the saw pulleys briefly and make sure that the position of the saw tape is correct. The machine is ready to work.

The use of coolant for metal sawing

Croesus is a lubricant-cooping liquid, which is mandatory used to lubricate and cool tape saws and parts when sawing metals. It is very important to use only high-quality coolants, since the use of low-quality fluid can reduce the resistance of the tape canvas by 10-20%. The resource of the strip saw depends on the correct selection!

When sawing metals, the coolant performs the following important functions:

• penetrates between the workpiece, tape saw and formed by metal shavings, reduces heat release during friction, does not allow the expansion of the metal. Overheating. the main factor destroying the cutting edge of the saw;
• cools and lubricates the guides;
• Removes metal chips from the hollows between the teeth of the strip saw, and also reduces the power necessary for the sawing process;
• reduces roughness, thereby improving the quality of finished products;
• protects the sawn blanks, ribbon saws and equipment from corrosion;
• improves sanitary and hygienic working conditions in the workshop.

To increase the service life of the saw, heat should be used more intensively as possible from the cutting zone. In this regard, a thorough adjustment of the coolant supply system to the cutting zone is necessary.

The process of reducing friction due to the formation of an oil film between two bodies is called hydrodynamic lubricant. As the force of the two bodies applied to these two bodies increases, the oil film is disturbed and dry friction occurs. Therefore, in order to ensure the best cutting conditions, it is necessary to select the coolant that differs in oilyness, regardless of its viscosity.

Since the coolant system is open, chips may fall into the tank with a cooling liquid. The design of the machine provides for the installation of special filters to reduce the amount of chips that fall into the tank, but the filters do not guarantee the complete cleaning of the coolant. Therefore, it must be regularly replaced, and the filters are cleaned. To maintain the required concentration of coolants, regular checks are carried out and using a refractometer is determined, add either water or concentrate of coolant to the system.

Recently, the production of coolants has appeared in the form of micro-fusion of air-oil suspension directly onto the tooth of the saw. This cooling method is used when cutting profiles and pipes, blanks that have increased requirements for surface purity and blanks with a diameter of up to 120 mm.

We recommend using the German RATAK 6210R COMP, you can purchase it from our managers. This lubricant-cooping fluid is ideal for use on tape-pile machines of all manufacturers.

RATAK 3210R (Germany)-semi-synthetic, biostaby lubricant-coolering liquid with high m oil, which forms a stable translucent emulsion when mixing with water. It is supplied in the form of a concentrate, from which a water emulsion is subsequently prepared. It is diluted with tap water. Stable at low temperatures (below 15ºС), oil in it. at least 20%.

Table values ​​of concentration:

Aluminum.20-25% corrosion-resistant and heat-resistant steels and alloys, as well as high-carbon steels-13-18%.

You can find out the cost of coolants and more detailed information from our managers by phone 7 (495) 739 03 30 Kind. 318.

Installation of saw recommendations STF Slavic courtyard

Always put on gloves and protective glasses when working with a saw. It is safer to replace the saw with a de.energized machine.

Put the saw so that the hollows of the saws of the saw protrude behind the vertical plane of the edge of the pulley by 2-3 mm (see. rice.). After that, the tape saw canvas is tending. The tension force should be the way that the manufacturer of your pilrams recommends according to the operating instructions.

It must be remembered that in the process the canvas is heated and stretched, as a result of which the tension weakens, so it is necessary to constantly control the tension force.

After tensioning the canvas of the strip saw, it is necessary to properly set the guide rollers. Naturally, the rollers should be displayed horizontally and vertical according to the instructions for the manufacturer. The video should push the saw down from its free state by 2-3 mm. The rear edge of the canvas should not stand from the beams of guide rollers by a size of more than 1-2 mm (see.rice). An increase in this parameter will entail an increase in stresses in the saw and, as a result, the formation of cracks on the rear edge of the canvas. A decrease in this parameter will also entail the formation of cracks on the rear edge of the saw as in the process of the saw will be rubbed on the roller side, heated t.e. Cross, will become more solid than the rest of the saw, which will entail the formation of microcracks and the further rupture of the saw. A new saw to work under load should be drove in idle mode for at least 15 minutes.

Selection of lubricant-cooler fluids Slavic courtyard

Numerous experiments conducted by American researchers led them to the opinion that there was no need to use grease at all until the sawdust starts at the saw. In this case, the optimal lubricant should be used: a mixture of 50 % diesel fuel and 50 % oil for lubrication of tires of chainsaws. This mixture should evenly spray on both sides of the canvas. For this purpose, the automobile windshield washing systems have proven themselves perfectly. There should not be a lot of lubrication. You will easily notice that it is time to lubricate the sound that has disappeared after applying lubrication. The use of such lubrication will allow you to reduce the number of boards and extend the life of the belts on the leading pulley, since they will not be more from sawdust, water or snow that are getting on them.

Remove the saw voltage as soon as you stop sawing

In the process of sawing, the canvas heats up, and, therefore, stretching, increases in the length. Cooling, saws strive to contract to the original size. This is where excessive stresses appear, which in the future can cause the formation of cracks. If you leave the saw canvas stretched, then expose the unnecessary tension of the support and traction, thereby you can violate the geometry of the drive pulleys and reduce the service life of your frame.

The canvas is also the shape of both pulleys, which does not lengthens the life of the saw. Add to this inevitable deformation of the belts on pulleys, which leads to additional vibration of the canvas. Therefore, even with short.term stops, especially in the cold season, weaken the tension of the strip paintings.

Spectrum tape.

First of all, you need to choose a competent, conscientious manufacturer. Today in tape sawmills are produced in almost every city, therefore it is very difficult to make the right choice. It is best to contact the one who has been working on tape equipment for more than one year, you can find out about all the positive and negative aspects of this equipment and directly about the manufacturer itself. Otherwise, you will have to independently conduct some analysis. First of all, it is necessary to find out how long this company produces tape sawmills, how powerful production base (not garage), what guarantee the manufacturer gives to sawmills of its own production and ask about the presence of a certificate. It is useful to take phones from the manufacturer or the addresses of those who have been working for this equipment for a long time and in the process of communicating with users of tape equipment you can draw some conclusions. Do not chase low prices, most often it is a sign of artisanal production and most likely there will be difficulties with a warranty repair, or even it will be impossible to find a manufacturer at all.

When buying a strip sawmill, as a rule, is hoped for a relatively not large amount to organize quickly, organize a sawmill and immediately start earning. But, for the lack of experience on tape equipment for the first time, the days of work are disappointed, from the lack of the desired result. Saws are torn, on the “wave” board, it is not possible to achieve high performance. What to do? All these problems are easily resolved, you just need to use our practical tips.

Practical tips for setting up and working on tape sawmill:

After installing and installing the machine on the site, you need to immediately start organizing a sharpening site. This is perhaps the most important stage in the organization of production. As you know, the quality of the strip sawmill is 30% depends on the correct installation and setting of the machine and 70% of the correctly selected and properly sharpened cutting tool.

There are nuances in the preparation of a sharpening tool, which need to pay special attention to. When working on a wandering machine, it is very important to withstand the profile of the stone, since the cutting parameters change from the wrong tooth profile, which in 95% of cases leads to the appearance of cracks in the tooth hollows.

one. Proper tension of the strip saw.

The service life of a strip saw directly depends on the correct tension of its pulleys.

The tension force, a strip saw depends on its width and brand of steel from which it is made and set in its characteristics. You can control the tension force using the “tensometer”, which is usually purchased from the manufacturer. In the work, the strip saw should be no more than 2 hours. Then it must be removed from the machine and hung in a free state for at least 24 hours, as a result of which the fatigue stresses are removed.

2. Choice and proper use of lubrication of a strip saw.

When sawing a forest of high resinousness or not sufficiently dried due to a large amount of juices or wood resins, a cutting tool in the puncture occurs in the boot, the resin is sticking to the cutting edges and, plus to everything, sawdust cannot be carried out. At the same time, the supply is reduced several times, and the stop up to the jamming of the strip saw. On the pulleys of tape sawmill, the resin is sticking, which leads to a violation of the saw stabilization. this is the main reason for the appearance of the “wave”. This problem is solved by intensive supply of lubricating fluid. As a lubricant-cooping fluid (coolant), most often simple water or water with a detergent (for example, “Fairy”) is enough. At minus temperatures, a mixture of diesel fuel or kerosene (50-80%) and motor oil (50-20%), or oil for lubrication of the chainsaw tire is used. When sawing conifers, the turpentine showed himself well.

If water was used as coolant, after work it is necessary to wipe the saw tape and pulleys with motor oil.

3. Ribbon saw saw

After work, be sure to remove the tension from the saw tape. During operation, the canvas heats up and, accordingly, stretches, and after cooling is compressed. Which leads to imprints of pulleys on the saw and cracks in the hollows between the tooth.

four. Geometry and dentist.

With the correct divorce of teeth between the canvas of the saw tape and the surface of the wood 65%.70% of sawdust and 30%.35% of air. With too large divorce, the ratio of sawdust and air changes, which leads to large losses for sawdust and high roughness of the resulting products. With insufficient divorce, you will not get the desired air flow to remove sawdust, which will lead to overheating, and subsequently destroying the strip saw. Hot sawdust is a sign of insufficient teeth divorce. Also insufficient divorce and the wrong angle of sharpening will lead to the appearance of a wave on the board. For logs of different diameters, drill forest and timber, you need different wiring. Therefore, timber must be sorted.

20-25 cm. increased size, wiring of teeth increases by approximately 18%. The hardness and humidity of the wood also affects the wiring. It is recommended to make control cuts of logs and increase the wiring by 0.05-0.08 millimeters on each side until traces of teeth appear. This suggests that the proportion of sawdust / air. 50/50. After that, it is necessary to reduce the wiring of the teeth by 8-10 hundredths on each side, to obtain the desired result.

Attention: only the upper eighth of the tooth is divorced, the middle and lower part remains not touched. When sawing the hollow between the teeth should not be completely filled. When sawing soft wood, chips increase in volume 4-7 times, when compared with the condition at the cellular level. Solid wood rocks increase 0.5-3 times. Therefore, when sawing pine logs, teeth are divorced 20% more than when you work with oak lumber. You need to make teeth before sharpening.

5. If you want a strip sawmill to work effectively, follow the rules for sharpening a saw.

Only one correct way to sharpen the drain of tape sawmill is known. The stone describes the trajectory: down the surface of the tooth, between the teeth around the base of the hollow and up along the back of the tooth with one continuous movement.

It is very important to maintain the profile of the interdental cavity and the tooth itself. The correct space between the teeth (galllet). provides a power flow of air, cooling steel and removal of sawdust.

If you have the correct divorce of the teeth, the air is supplied along the log at the same speed as the saw, as a result of the sawdust, are sucked into a gall. Sawdust significantly cool it, passing around the inner and outside of the next tooth. It is necessary that the space between the teeth is filled by 40%, which will provide the necessary cooling and increase the operation of the saw.

6. How to install the right angle of sharpening.

Thanks to deep gallets, we can use the reduced sharpening angles that transmit less heat to the tip of the tooth. The ribbon series uses an angle of inclination of a hook of 10 degrees, which is able to penetrate into most surfaces of wood from medium hard to medium soft. The general rule is this: the harder the wood, the smaller the angle of sharpening. Caution: Do not trust the scales and measuring ruler on your machine machine! Pins and guides wear out on it. In the process, the profile of the stone changes. To control the correct angles of sharpening, use the transporter. Attention: we recommend changing saws every two hours of continuous work, letting them rest at least a day. In Fig. 1 shows some parameters of the canvas that determine its durability and performance where: a. angle of sharpening, this is the angle between the front surface of the tooth and the plane of the perpendicular back of the saw; AT. tooth hollow; FROM. back tooth surface; E. Divorce, this is a deviation of the tooth from the vertical. Fishing line for a trimmer of divorce (place of bending) is located at a distance of 1/3 from the top of the tooth; R. radius of the hollow; R. The step of the tooth is the distance between the two teeth; N. tooth height, this is the distance from the base of the tooth to its top.