Among the useful things that are stored in the backbusiness owners of suburban areas, we can always find the tools and devices for cutting wood. This may be a jig saw, hand saw, electric saw or a handy powerful machine that runs on liquid fuel. Any of the "helpers" requires certain work skills and considerate care. For example, owners of a tool running on electricity, need to know what are circuits for power saws, it is difficult if their own change, and whether the correct file for sharpening.
Logging in large amounts or seriousconstruction work on the street requires the purchase of a more powerful tool - chain saw. However, if you need to touch up a fence occasionally make home repairs or to saw a few logs, the electric saw is the perfect tool. It is convenient to use in confined spaces - inside the house, in a shed or utility room as well as on the site, if there is power supply nearby.
What other advantages does the tool onpower supply? It does not require time for mixing fuel and cutting more accurately than gasoline counterparts. Minus one - sparing use mode. We'll have to get used to the interval sawing wood. This means that after 40 seconds of operation required for saw "breather" is about 20 seconds.
So, if you are already a happythe owner of an ergonomic, comfortable electric saw, get ready for what will have to get acquainted with the device replacement and sharpening chain - the main dynamic parts.
Before choosing saws learn about the system of protection against overheating. The service life of the protected motor is much longer and productivity higher
Circuit along with the engine is the most importantfunctional parts, so with the active use often beyond repair, sharpening or complete replacement. Old, worn-out chain should be replaced completely, and for this, some selection rules you need to know:
- When replacing any parts (sprockets, tires orchain) should be aware of the compatibility of the elements of power saws, ie to acquire only parts of the manufacturer, for example, to require saws Makita Makita chain of production.
- Pick up the chain depending on the purpose. If you need more power, more profitable to buy the product with step 3/8, 0.325 inches is sufficient at low loads. The volume of the cylinder in this case is not important.
- Note sharpening angle - isuseful for future maintenance, repair or restoration. For greater performance, choose an angle of 30? - It is easier to perceive large load. However, in a complex processing of timber (if it is wet or frozen), the best stop on the record 10 ?.
- Chain length must necessarily correspond to the size of the tire. In the process, it can stretch, sag, but the problem is solved by simply removing 1-2 units.
Of course, you must take into account the method andmaterial cutting. For example, for longitudinal cutting chain is better to choose a small sharpening angle. Performance will be less, but will increase the service life considerably.
One of the indicators of the chain of choice - a move thatgenerally measured in inches. This spacing rivets divided by two. Now there is a unified system of symbols and common standards - 3/8, 0.325 and 0.404 inches
Elements of the chain - the teeth - have differences that are important to take into account, buying a chain for the various works.
Each part of the tooth has its own purpose. For example, the upper face of the tooth, which is often called a spatula tapers in the back and forms an angle of the blade socket. It is necessary to cut chips
The sliding surface and the slope of the end of the bladeform a rake angle, with different options - from 60? to 85 ?. Top blade angle is adjusted as the front angle during sharpening. Each of the elements, in particular its size and degree of severity, affecting the cutting ability saws.
Adjust angles at arbitrary parameters can not be proven standards exist that must be followed depending on the type of circuit and its functionality.
The angle of inclination of the blades generates the optimum cutting properties when inserting circuit in wood layer. On the inner side there is a sharpening angle - 10? or 30 ?, which can be changed if necessary
The values of the clearance angle - 50? or 60 ?. This is the most important angle, but it is difficult to measure and difficult to fit, if you do not comply with the remaining quantities.
The distance depth gauge affectsHow thick will the chips. It depends on the type and purpose of the circuit and is equal to 0.6-0.8 mm. Limiter also requires adjustment and grinds, but much less frequently - 5-8 cheats
Companies that produce electric saws, do not prohibitreplace the chain with his own hands, on the contrary, often complement the new product's instructions for repair and replacement of parts. Start by buying a new chain.
Check the chain for compliance, that is, studying its characteristics: length (depending on the bus), the step size (relative to the stars), the thickness of the drive link
One of the common designs cost saws - with lateral tension. To change the chain alternately perform the following steps:
- We shift the guard, while lowering the brake;
- screwdriver to turn the tension control screw, unscrew the nut, thereby weakening the tension;
- remove the lid;
- We separate the tire from the chain sprocket;
- remove the old chain with a tire in its place a new set;
- manufacturing steps in reverse order.
Tightens the chain smoothly, without jerks. Finally stretch the it after closing plastic cover with a screw and a nut.
There are modern systems keyless chain tension, but many prefer the traditional masters of the side stretch, somewhat problematic, but a proven and reliable
Current models of electric saws have socalled wing nuts for opreativnogo chain tension. This element replacement process is faster - and this is important when large volumes of work. Lowering brake, unscrew the nut and remove the lid. Slightly pushing back tire, remove the old chain, put on a new - first on a star, then along the entire length. Then set up a star in place, tighten the screws. Turn the tension wheel in the direction indicated on the housing and tighten the final "lamb."
The last step - check the chain tension. It should fit snugly inside the tire when the brake is released, but the scroll under manual exposure. For a more effective verification recommend to drive the saw at low speed
More details about the tightness of the chain, you can look at the video:
It would be naive to think that the saw will always be the samework effectively as the day of purchase. Wood, even supple and soft - strong enough material, which causes a gradual dulling of the cutting surfaces. After a certain period, which depends on the activity of the tool and the quality of wood, the chain becomes blunt and require sharpening it. If time does not sharpen the teeth, they lose their shape, will be ruined and need not repair, and complete replacement - and it is economically disadvantageous.
Certain intervals between maintenance workdoes not exist. sharpening is required Normally, when they begin to show signs of blunting. One of the main features - size changes and the appearance of the chips. Because visual disturbances cutting edge of the teeth small and it becomes darker than usual, and sometimes resembles dust.
Skilled craftsmen can determine the need forsharpening not characteristic of sawdust, and on the saws. In the process of cutting appears unusual vibration, which can later cause damage to the sprocket and the wear of critical components
If you have any suspicions, inspect carefullychain itself. On the island one part should not be chipped, radius, damage, and the shape of the cutting edge must remain original. If you notice the slightest breach in the configuration of the teeth - chain needs sharpening.
In a blunt tooth cutting edge grinds on two fronts: the front of the shoulder blades and through the side of the cut. During sharpening it is necessary to correct the shape of the entire cutting part
Residents of big cities are faced with a choice: it is possible to sharpen saws chain service center, or make their own sharpening, with the help of special tools. The owners of the power of the small towns and villages have no such opportunity, so they, in spite of the complexity of the process, it is better to learn how to repair the chain by hand. But the self-sharpening is a plus - saving money.
The cost of sharpening one tooth with correctionslimiter will cost 100-120 rubles, but most service centers only place orders with a minimum amount of 5,000 rubles or more (the calculation is the number of teeth on the entire chain)
The advantage of a professional sharpening - Highquality of work. The chain is removed from the tire, pull on a special machine, put the sharpening angle and turn the right of every tooth. Precision sharpening determined tenths of a millimeter.
Many master craftsmen do just that -when the first symptoms of blunt links take file and correct the angle of the cutting edge. However, any tool is not suitable, it reserved a special set that includes at least four essential tools:
- flat file to correct the depth gauge;
- round file with a guide lines;
- mandrel to determine the angle.
To sharpen the chain left on the bus, and the bus is fixed in a vice. Files must match the diameter of the teeth.
Tool for hand sharpening saws chain can be purchased at building supermarkets, the average cost of one set from 300 to 900 rubles
When using round file watch,that he only played 1/5 of the sharpened part. The first tooth is recommended mark to inadvertently wrap around. The movements must be rhythmic and precise, not haphazardly, but only in one direction.
After a few cheats and should be treatedlimiter, which loses its shape over time. Calibre is applied to the edge of the end side of the limiter. If the limiter significantly beyond the boundaries of the caliber, it should trim the flat file. Position tool - perpendicular to the bus.
During sharpening follow the movement of a file,which should be located at an angle 90? with respect to the bus. Try to remember the magnitude and the number of movements to all chain teeth are sharpened equally
The teeth of the chain wear unevenly, so you come up with the fact that they have different heights. In this case, you should find the ground off the element and be guided by him
The quality of the eye is not defined, it will be known only after a trial cut.
Continuing to use a file forcorrection of the cutting edge can not be, since inaccuracies and uneven stitching leads to a rapid deterioration of the chain. Even if you have a stuffed arm and sharpening process seems fast and not labor (and it takes 6 to 8 hours), try to use the machine - a more efficient device.
All grinding machines are divided into circuits and manualpower. Hand Tools - elementary design that looks like a frame or a jigsaw. For manual operation must be securely fastened to the bus circuit (removed from the saw is not required) in a vise, and then process each tooth in turn. Compact, light weight and easy transportation make it easy to carry the device over long distances, if the need arises.
Manual machines have a simple design and low cost - from 850 to 1700 rubles. The best manufacturers of hand-grinding equipment are considered to Oregon and Champion
When buying a second option - electricmodel - necessarily need the power supply, which means that it is impossible to carry out grinding away from an outlet. But the quality of the work will be much higher, moreover, elektrostanki have a set of useful features:
- work with different kinds of circuits;
- the depth of cut and pitch correction;
- current limiter formation;
- setting the desired angle of cut.
Before the work should be carefully consideredthe instructions and make a trial sharpening 1 tooth. Then set the parameters of the first tooth, all of the following elements to conform to it. This ensures the same all teeth sharpening, therefore, good performance and high performance.
And finally, some tips for those whoHe prefers to work harder and less engaged in the repair, replacement and grinding circuits. Remember that electric saw is designed to work with wood, so in any case, do not use it to cut products made of other materials. Make sure that the wood was not party objects that can damage the teeth of the chain, such as nails, bolts or metal clips. Even small steel stud can destroy some of the teeth, and as a result will have to replace the whole chain.
The ideal material for cutting - dry woodlogs, boards or blocks, the width (diameter) not exceeding the length of the bus. To cut a huge trunk in several girths, use gasoline saw industrial type
In order not to "screw up" accidentally saw, useSpecial high stand, or "goats" and make sure that the tire chain is not in contact with the ground. Res should be carried out freely, without "Zakusov" if the teeth do not grab the wood or the tire moves with difficulty - it's time to perform sharpening. Be sure to observe an interval mode - allows you to relax saws. In time, lubricate the mechanism and make sure that there was no overheating. Compliance with a few simple rules will extend the life and power saws allow to realize many interesting plans.