Homemade band sawmill. Do-it-yourself band sawmill drawings Homemade small petrol band sawmill

Band sawmill quite often used in small farms and private houses for wood processing, and in considerable quantities. This is a simple and reliable tool (with a competent approach to its creation), which will cost much less than the purchased option. For a homemade woodworking structure to work truly effectively, you should have an idea of ​​how to properly make it yourself. More on this below.

Band sawmill: features, principle of operation

The band sawmill is quite simple design, which is based on a sawing tape made of tool steel. This element is located between two sawmill units, which, when rotated, ensure high-quality and constant movement of the blade when working with wood.

The band saw design allows for high-quality processing of rough material, properly preparing the logs to fit their overall size and shape. Also, the tool in question for working with wood allows you to cut logs according to a clearly defined pattern after properly setting up the equipment.

Constructions belt type are very popular among builders for several reasons:

• After sawing the material, a negligibly small cut is formed, which makes it possible to achieve a high yield of finished material from the initial rough workpiece (the yield of the finished product is about 75%);

Sawmill design diagram

• Convenience of working on a sawmill with large-diameter workpieces;
• Ease of selection optimal thickness sawing the original material;
• Purity and sufficient smoothness of the resulting product.

Attention! Only well-dried wood (except coniferous) is suitable for working with a band-type sawing structure. The first type of wood complicates the work, the second leads to strong sticking of tree resin on cutting saws.

In order for a homemade sawmill to effectively perform its functions, it is necessary to ensure loading and stability of movement of logs, the weight of which can reach 300 kg, as well as adjustment of the sawing thickness.

Construction assembly process

The type of materials for creating a sawmill of the required quality is selected depending on whether you have drawings on hand and how complex they are. So, to one degree or another, you will need the following materials:

• Pipes of various diameters;
• Pulleys (both new and previously used ones will do);
• Profile pipes (for sleepers);
• Channel;
• Rails (you can use corners instead).

To work, you will also need a set of certain tools: a milling machine, a clamp, an angle grinder, an electric drill, welding machine, fasteners, levels, etc.

Advice. Assembling a homemade sawmill is not an easy process, so only those who have certain experience working with similar structures. It is also important to understand that setting up such a design for such a product will require considerable effort.

After preparing all the necessary elements, you can proceed directly to assembling together the main parts of the sawmill (pre-read the photo and video materials):

1. The first step is to prepare the bed (fixed part). To create it, two channels/rails are suitable). When using rails, you must install them so that the sole is at the top. If a channel is used, its height should be at least 14 cm and its length should be about 8 m.
2. It is necessary to make holes along the entire length of the frame in increments of about 1.5 m.
3. The channels are pulled together using pipes about 25 cm long. Bolts or threaded rods are suitable as fasteners.
4. The next step is the racks on which it will be installed finished design. Their number directly depends on the length and complexity of the structure. So, for a standard 8-meter sawmill, 4 racks will be quite enough.
5. To add rigidity to the sawmill, braces are added to the structure.
6. The last stage is assembling the mobile cart. Its dimensions directly depend on the width of the bed. It is important that the trolley protrudes slightly beyond the frame on both sides.

To increase the efficiency of a band sawmill, you should follow a few simple but effective rules:

• The structure should be created taking into account the future load and, therefore, it must be stable and strong enough.
• Since the assembled sawmill is very massive and has considerable weight, its assembly should be carried out directly in the place where it will be used for its intended purpose.
• Keep in mind that a homemade sawmill “scatters” wood chips, so it will require an additional structure or you will have to constantly remove debris after the work process.
• Before using the sawmill, the saw should be carefully sharpened and the teeth should be set apart.
• The optimal engine for starting a sawmill is a gasoline engine. You can use a chainsaw, and its blade will be suitable as a tape for a future woodworking structure.

• For more efficient work When using woodworking tools, spacers/plates should be used. The gaskets must be 0.5 cm thicker than the channel.

These are all the nuances that should be taken into account in order to create a reliable and efficient band sawmill. Be attentive to details and careful in your work. Good luck!

When carrying out construction or carpentry work Lumber is always needed. These can be boards for various purposes, timber for foundations and floors, parts of building structures.

In order to have a sufficient supply of the necessary materials, you will have to frequently saw raw logs. Of course, you can already buy finished products, but financial costs will increase several times.

A factory-made sawmill is also not cheap. However, you can make a fully functional sawmill with your own hands at home, and the costs will be significantly lower.

Varieties

Depending on the design of the working part, a homemade sawmill is made of three types:

• disc sawmill;
• tape;
• tire

Let's take a closer look at each of them.

Disk installation

Among homemade devices Disc sawmills are the most common type. They have gained wide popularity due to their versatility and ease of assembly.

Most suitable for one-time construction work or for small businesses that do not involve large volumes of production. The basis of this design is Circular Saw, installed on electric motor or on the spindle.

In most cases, a so-called “circular” is made - solid foundation in the form on which the engine and the shaft with the circular saw are mounted.

The base is made of wooden or metal parts, which are fixed in a crosswise position and secured with a board of a suitable size. Metal plates are fastened on top of the board using bolts.

In the resulting plate it is necessary to leave a slot for the saw and holes for mounting the engine. The holes must be additionally countersunk and then secured with screws.

The saw must be installed strictly in the middle of the resulting structure. The top plate is connected to the base with screws, and the disk insert is fixed in the hole between the plates. The last thing to attach is the thrust bar.

note: when assembling the sawmill, close attention should be paid to the reliability of fastening of all structural elements. An insecure saw blade poses a serious threat to human health and life.

Using homemade disk sawmill You can make timber, slats of different sizes and veneer. The rotation speed of the saw is sufficient to obtain quality products with smooth edges and cuts.

Belt type

Installations using band saws are used in the production of lumber on an industrial scale.

Private production in most cases is equipped with homemade sawmills, made on the basis of drawings of factory units. The main advantage of such devices is the ability to quickly cut large logs weighing up to three hundred kilograms.

Manufacturing a band sawmill requires special training and sufficient availability large quantity various building materials:

• pipes of various sizes and diameters;
• metal corners for mounting the rail system;
• channel;
• pulleys;
• profile pipes for sleepers.

In addition, you will need tools for working with metal - a welding machine, an electric drill, a grinder and a set of fasteners (bolts, nuts, screws).

Work on the manufacture of the device begins with the installation of the stationary part - the frame. The shape of this design resembles the letter “P”; the material is two channels or angles 50X100 mm.

Standard length the channel is 8 - 9 meters, the height is at least 14 cm. After installing the frame, holes are drilled in it, the gaps between which must be at least one meter.

Afterwards it is necessary to tighten the channels with pipes 25 cm long, fastening is done using bolts the right size and hairpins. After this, the racks on which the sawmill will be fixed are mounted. To increase stability, the structure is additionally strengthened with the required number of braces.

It is important to know: the proportions of all parts must match; for a sawmill 9 meters long, a saw measuring at least a meter is required.

A saw is attached to the trolley, and a steering wheel is installed on the side to control the operation of the unit. The clamps are made of pipes with a diameter of no more than 40 mm; movable hoses are installed inside. Clamps made of metal corners are installed on top of the pipes.

Lastly, the saw blade and motor are installed. It is best to construct the structure directly at the site of future work, since total weight band sawmill is very large.

You may also be interested in an article on how to make a vibrating table for paving slabs:

Tire (logosol)

A homemade unit is fundamentally different from other types of sawmills in its design.

The main task is longitudinal sawing of logs, production of high-quality veneer and slats. Numerous videos on the Internet provide comprehensive information about all stages of installation of a tire sawmill.

This type of sawmill is used for small industries for making mini blanks non-standard shape and size. In homemade units, a chainsaw blade of a suitable size is used as the working part.

The design consists of a profile whose working height is just over a meter. The chainsaw is moved using a trolley.

The exact height is calculated taking into account the height of the worker in order to avoid prolonged stay in an uncomfortable position. A log is placed on the main profile, the saw moves and cuts according to preset parameters.

The main condition necessary for quality work such devices - sufficient weight and rigidity of the main profile, as well as the presence required quantity supports To obtain an even cutting line, you must have at least four stable wheels and a manual drive.

It would be optimal to use a well crank with a drive wheel. To adjust the thickness of the product, rigid fixation jacks are installed.

Making your own sawmill of any type is a labor-intensive and complex process. Whether the waste of time and money is advisable is up to everyone to decide for themselves. In any case, when installing a unit of any type, one must not forget about safety precautions.

Injuries often occur while working with wood, and homemade equipment, assembled insufficiently well, poses a danger to the owner.

How to make a cheap sawmill with your own hands, see the following video:

Good day! Let's not talk for long and get straight to the point. IN this material You are presented with a guide with the help of which you can make a band sawmill with your own hands. So, let's start with the description.

The pulleys used in this device were previously used by a combine harvester similar to the Neva; they have a diameter of 300-320 mm. The pulleys are ground down a little, this is done in order to achieve a slight protrusion of the belt. In the future, the belts can be removed completely, this will allow the device to work more quietly and productively.

Turning work is involved here to a minimum. This became possible due to the fact that a half-inch pipe and a pipe that is placed on top of it with a gap of 1-2 mm are used as guides.

First, let's look at the "rails"

For rails, we use a 5 cm corner, which is installed so that the side is on top; most often, it is installed so that the edge of the corner is at the top. This makes it possible for the wheel not to wear out.

As “sleepers” we use a 2.5 by 2.5 cm profile pipe. It is also welded like sleepers, between profile pipes ok, and a half-inch pipe, which is equipped with claw fasteners. The movement and tilting of the fasteners is carried out in a free mode; the tree is clamped by hitting the clamp with a hammer, which, due to this, jams.

Protrusion of profile tubes beyond the rails is also implemented. These protrusions are equipped with adjusting bolts (M14 by 100 mm).

The profile tubes have “bridges” on top of which the flame is laid. The distance from one bridge to another is 500 mm (for short workpieces).

The pulleys with their bodies (hubs from the Moskvich car) are welded onto the tubes, and the entire structure moves along horizontal guide tubes (half-inch tubes) and is fixed with bolts.

• The right (driven) pulley is tensioned automatically using a spring (taken from the KaSiki shock absorber).
• The position of the left (leading) is fixed, but there is the possibility of movement when the size in the band saw changes.

A do-it-yourself band sawmill cannot be made without rollers. When developing rollers, it is worth remembering that they must be hardened. The entire sawmill can be done in a garage, the only problem may be with the turning work.

Based on considerations of simplicity, we perform a “roller assembly” using a set of bearings, a pair of identical ones and a slightly larger one at the back.

The “Rollers” are installed on a machined shaft so that it is possible to install washers between the bearings (if the width of the saw changes). The shaft is installed in the same pair of pipes described earlier; the shaft and half-inch are welded so that the axes are offset (shown in blue).

The entire structure is attached on top of the guide tubes in such a way that the unit can be adjusted vertically and moved from side to side with the possibility of fixing (to adjust the opening in accordance with the diameter of the log). We attach a dropper for coolant to the roller, which is installed where the driven pulley is. To make the frame, a channel (100) is used, the height of which is 150 cm. The frame is strengthened using gussets. The frame may “play” a little, it’s not scary. Backlash is present even in factory-made sawmills.

The “Cutting block” is moved over the channels using pin screws. To install " cutting block"was rigid, we use bolts and locknuts. Details of the lifting mechanism in the images.

The popularity of wood in private construction remains high even with the advent of the newest building materials. This is largely due to its reasonable cost, availability and ease of processing. Despite the fact that today you can easily buy a suitable board, beam or batten, the question of cutting logs yourself is of interest to everyone thrifty owner. And this is natural, because the costs of purchasing commercial timber cannot be compared with the cost of edged lumber. Of course, running your own sawmill just to fix a fence or repair a roof is not practical. If we are talking about starting construction on an empty site, then your own sawmill will be very useful. And you can save on its purchase if you build the unit yourself.

Design and principle of operation of a band sawing unit

A modern band sawmill is a real automated complex

A band sawmill is called universal machine, which is used for longitudinal sawing of logs in order to obtain standard lumber - boards, timber, sleepers, carriages. Structurally, the unit consists of four main components: a band saw and its drive, a mechanism for moving the saw frame, a device for adjusting the height of the working blade and clamping fixture for fastening round timber. The sawmill is powered by an electric motor or internal combustion engine. Regardless of the power unit used, its power must provide long work equipment without overload. For a non-professional machine, asynchronous will be quite sufficient electric machine power 5 kW or gasoline (diesel) unit 6 - 8 liters. With. During operation of the machine, torque is transmitted to impellers (pulleys) with an installed “endless” saw blade up to 60 mm wide. Since the saw blade heats up and sags during operation, a hydraulic or spring-type tension mechanism is used.

Saw frame device

The longitudinal movement of the frame with the installed drive mechanism is carried out on rails installed on a solid concrete base. For this purpose, hardened steel rollers are mounted in the lower part of the unit body, the ease of rotation of which is ensured by closed ball bearings. The length of the rail guides depends on maximum length processed forest.

The thickness of the wood layer cut from a log is determined by the height saw blade above the floor level and is regulated by a special unit, which includes a pair of threaded transmission and its drive mechanism. Thanks to the simultaneous rotation of two screws located at the edges of the carriage, its movement along the vertical guides is ensured and the saw does not warp.

Using a belt-type sawmill, you can obtain material of any thickness with minimal losses on sawdust

The logs are prevented from shifting during operation of the unit. clamping device, which is assembled from a guide in the form round pipe and bushings with hooks installed on it with a large gap. The skew of the moving unit with installed “claws” leads to jamming of the device, which ensures the immobility of the round timber during processing. To better understand the operation of this device, carefully examine the illustration provided.

Jig operation

The operating principle of the sawmill is extremely simple. The log intended for sawing is placed in a bed between the rail guides. Then it is fixed with hooks, which are wedged with several blows of a hammer into the edges of the moving units. The carriage with the band saw is brought to the end of the round timber, after which the height of the working blade is set. After turning on the machine, the operator smoothly moves the saw frame along the rails, due to which the board is gradually cut to the required thickness. After reaching the other edge of the log, the cut lumber is put aside, the saw is raised and the unit returns to its original position.

Some sources suggest repeating the design of units in which the saw carriage is mounted motionless, and the cutting is carried out by moving a log laid on a movable platform. Perhaps such a scheme has a right to exist, but it must be taken into account that its implementation will require rails of double length.

The machine described above is a simple sawmill. If we talk about modern equipment, then it almost completely eliminates manual labor. All operations, including moving the saw frame and adjusting the height of the band blade, are performed automatically, upon command from the control panel.

Video: Features of the band sawmill

What you will need to build a sawmill

For those who think building their own sawmill is not a difficult task, let us say right away that creating a high-quality, efficient unit is not easy. And the point is not even that one cannot do without certain financial costs - as a rule, the budget of a homemade sawmill easily fits into the amount of 30 - 40 thousand rubles. Assembling a unit capable of producing high-quality lumber will require solving problems related to stability of operation, ensuring the strength of components and parts, setting up and adjusting mechanisms, making devices for sharpening a band saw and setting its teeth, etc. Are you not afraid of difficulties? Then check out what materials and tools you will need for the job.

As rail guides, you can use steel angles with a flange width of at least 50 mm, a channel or an I-beam. The main requirement for rails is their straight geometry. We must keep in mind that any shortcoming of our miniature " railway» will affect the quality of the cut, because tape cloth will copy every unevenness, transferring it to the surface of the board. That is why the best option will be T, N or U-shaped rolled metal. Unfortunately, corners are most susceptible to bending during manufacturing and transportation. The most ideal case would be to use factory rails, for example, from narrow-gauge transport, which, with some luck, can be found at scrap metal collection points.

The rollers that ensure the longitudinal movement of the sawmill can be machined lathe and harden. In some cases, the use of conventional ball bearings is allowed.

Excellent rollers are made from linear guides based on ball bearings, which can be found on sale. This solution cannot be called the cheapest, but there is no doubt about the reliability and durability of such a unit

Actually, the frame, saw carriage and bed for laying logs are made of square and rectangular profile pipes. It is best to use rolled metal with maximum wall thickness. This will provide the equipment with the necessary strength, since the operation of the machine is associated with variable dynamic loads.

For the mechanism for adjusting the height of the carriage (traverse), you will need guides from steel pipes with sliders and two long screws with nuts. For these purposes, you can use parts from decommissioned screw-cutting lathes (unlikely, but never mind), mechanical presses, or threaded rods from a construction store (the most affordable, but least preferred option). You can also order the production of parts from a turner - it’s still unlikely to be possible without contacting a specialist. In addition, you will need a chain drive, which is often borrowed from the gas distribution mechanism car engines. Alternatively, you can use a bicycle chain and sprockets.

Pulleys from old domestic combine harvesters of the Kolos, Niva brands and other agricultural machinery are best suited as impellers for the belt blade. By the way, you can also get shafts and bearing housings from there. Please note that the diameter of the guides must be at least 30 cm (optimally 50 cm), otherwise excessive mechanical stress will lead to cracks at the base of the saw teeth.

Pulleys from decommissioned domestic agricultural machinery can be used in the design of the band saw drive

There are designs homemade installations with guide pulleys in the form of wheels from passenger cars. For skeptics, we note that such a homemade solution has a lot of advantages, starting from the possibility of using assembled hubs and ending with the fact that fine adjustment of the belt tension during operation can be done by inflating the tires.

You can buy a band saw new or used. It is best to have several blades in stock, which can be replaced with sharp ones as they become dull.

As for the tools that will be needed during the work process, every self-respecting owner should have one. In particular, you will need:

• welding machine;
• “grinder”, or, in professional language, an angle grinder;
• drill press or electric drill;
• a set of drills for concrete and metal;
• set of metalwork clamps;
• set of wrenches;
• hammer;
• pliers;
• fasteners (bolts, nuts, washers of various sizes);
• measuring instrument (ruler, caliper, tape measure);
• level (preferably laser type).

Don't forget that you will need to prepare a solid, level base, so be prepared for concrete works- make a supply of sand, crushed stone and cement, prepare a concrete mixer, tampers, formwork and a long rule.

Preparatory activities

At the preparation stage, choose optimal design, do necessary calculations and develop drawings. After this, materials and tools are prepared and a place is arranged for installation of the sawmill.

Design work, drawings

The construction of a sawmill begins with the selection of a production site. It has been experimentally established that this will require an area of ​​at least 3x6 m in size. In any case, when planning the length working area, must be taken into account maximum size processed forest. It is best if the unit is installed indoors or under a large canopy. In this case, you can work in any weather.

Then determine the number of corners (channels, I-beams) and profile pipes necessary for the manufacture of rail guides, stock and saw frame. The distance between the rails is calculated by adding gaps of at least 0.3 - 0.4 m on each side to the maximum diameter of the log. In addition, it is necessary to take into account transverse reinforcements, which are installed between the rails every 0.8 - 1 m. Support elements under timber can be mounted on the same amplifiers, raising the bed to a height of at least 0.2 m above the level of the guides.

Diagram of the sawmill Drawing of the saw carriage Drawing of the rail guides

Depending on the design, drawings are made of components that will need to be turned on a lathe - rollers, screws, shafts, bearing housings, pulleys, etc. The design of a homemade sawmill is taken based on financial capabilities, availability of materials and individual components, so the exact design of the unit everyone does it independently. However, we provide diagrams and drawings of the sawmill and its individual components as an example. They can be used in your own developments.

Drawing of the tension mechanism Drawing of the roller Working wheel assembled

Preparing the base

A properly made foundation will ensure the equipment’s stable linear characteristics during operation.

Since building your own sawmill is a serious matter, you need to approach it responsibly. Perhaps in the future the equipment will become not only a good help in the household, but also a source of additional income. Such important factors as the durability and reliability of the sawmill, the ease of operation and the quality of the resulting lumber largely depend on how strong and level the base it has.

The construction of a base plate is no different from the construction of a shallow floating or simple strip foundation. A lot has been written about it, so there is no need to dwell on the construction process in detail. Let us only remind you that you will need a cushion of sand and gravel, the thickness of the base is made at least 10 - 15 cm, and its strength is ensured by an armored belt made of steel rod with a diameter of at least 10 mm. In this case, significant variable loads will not lead to cracks or subsidence of the concrete slab.

Instructions for making a sawmill with your own hands

As a working project, we will take a design known for its simplicity and low cost with wheels from passenger car. Since the correct and reliable operation of the saw unit depends on each element, we will consider in detail the manufacturing process of each unit, the nuances of assembling and setting up the equipment.

Rail guides

Laying rail guides

When using corners measuring 50x50 mm as rails, they are not laid on one of the shelves, but with the edge angle facing upward. This will reduce wear on parts and provide increased structural rigidity. If you use rolled metal with a 100 mm flange for the guides, then such a corner can be installed in any position. I must say that the most a good option are rails made of I-beams or channels, since they have increased rigidity even without being “embroidered” with the help of transverse elements. By the way, a square profile with a width of at least 25 mm is used as “sleepers”. The rail parts are connected to each other using electric welding. When installing spacers, weld a half-inch diameter pipe with devices installed on it for fixing logs (“claws”).

Carrying out welding work, it is necessary to ensure that the workpiece does not “lead”, which often happens when parts overheat. Most often, such troubles occur with corners and other thin metal products, so in this case it is better to use a semi-automatic welding machine that operates in a carbon dioxide environment.

If it is not possible to ensure the straightness of the rails during welding, then the installation of transverse elements is carried out threaded connection. TO concrete base the guides are secured using anchor bolts.

Simultaneously with the installation of the rails, a bed for laying timber is constructed. To do this, vertical H-shaped posts with minimum height rods 10 cm and protrusions to prevent rolling of round timber of at least 5 cm in size.

The bed for laying lumber can have any configuration

The nearest 3-4 crossbars are installed at a shorter distance - no more than 0.5 m. Thanks to this solution, in the future it will be possible to work not only with long pieces, but also with short workpieces.

Both parts turned on a lathe and ordinary ball bearings can be used as rollers. In the first case, a hole must be provided for installing the rotation unit, and the wheels themselves are hardened. The second option involves installing one enlarged and two or three identical bearings on the axle. Of course, the parts are selected with the same internal size, and the shaft is machined with a thrust collar on one side and threads for attaching rollers on the other.

Wide rollers are good because any rolled metal can be used as rails, including channels and I-beams

Saw frame

The manufacture of the saw frame begins with vertical guides, of which two pieces are required. It is best to make the racks and sliders from steel pipes selected with minimal clearance. After this, a rectangular frame of the carriage is made, to the sides of which the upper and lower sliders are welded. Since impellers will be mounted on the lower cross member, it must be made of rigid square pipe or channel.

Trying on guides and sliders

The body of the sawmill is not something complicated, since it consists of paired vertical and horizontal elements connected at right angles. A durable frame is made from a square steel profile with a width of at least 50 mm. Smaller rectangular metal can be used as spacers.

Welding the bed

The use of profile pipes will provide rigidity to the structure. If, as a construction materials When corners are used, their joints are additionally reinforced with steel braces with a thickness of at least 2 mm.

Rollers are installed at the bottom of the frame, having previously determined the distance between their thrust walls. It must match the width of the rail guides.

Saw frame assembled with guides and carriage

Carriage lifting mechanism. Photo gallery

Vertical movement of the carriage is ensured by a paired screw mechanism with manual drive and chain transmission. The nuts are welded to the lower bushings (sliders), and the thrust part of the screw is mounted to top crossbar saw frame. The screws will rotate easily if you use suitable bearings as supports.

The drive for the saw carriage lifting mechanism is assembled with the drive and tensioner The upper assembly of the lifting mechanism The nut of the lifting mechanism is welded to the carriage bushing On the upper cross member the screw is installed in the bearing

To lifting mechanism worked without distortions, sprockets of the same size are installed on the shafts. After installing the chain, it is tensioned using a roller or fluoroplastic cracker. The drive of the flexible transmission is provided by gears of different sizes, one of which is rigidly connected to one of the screws, and the other is mounted on a separate shaft. The use of an oversized drive sprocket will allow you to quickly move the carriage along the guides. The fixation mechanism can be made of a spring-loaded pin, which, after adjustment, is installed between the chain rollers and fixed brackets. After assembly, the drive is equipped with a comfortable handle.

Pulleys

Manufacturing of hub adjustment unit

For pulleys, wheels and axle shafts are taken from a rear-wheel drive passenger car. To secure them to the bottom cross member of the carriage, you will need bearing units. It is best to order these parts from a turner - in this case it will be possible to make them adjustable, which will allow you to move the axes of the impellers to the sides. The fact is that during operation the band saw heats up and lengthens. If you don’t pull it up in time, it can fly off our “pulleys.” If you move them a couple of degrees away from the longitudinal axis, you can eliminate this danger.

Mounting the hubs on the saw carriage

Adjustment units are sections of pipes, one of which is installed into the other with a gap of up to 5 mm. The inner clutch is also a housing for the axle bearings, and its alignment is ensured by screws installed on the outer collet.

Installation of the power unit and main drive elements

One wheel is mounted motionless on the carriage, supplying the shank of its axle shaft with a pulley. The other is mounted on a movable unit, which will pre-tension the saw blade. The installation of pulleys is not carried out horizontally, but with an offset of 2 - 4 mm in the vertical plane. Leveling of the band saw occurs due to the displacement of the support unit cutting blade. This structural element can be made of three ball bearings, like the rollers of a saw frame.

Installation of the band saw support unit. The mechanism of its adjustment is clearly visible

After assembling and installing all components, the power unit is mounted on the unit. Rotation from the engine to the drive wheel is transmitted via a V-belt drive. Depending on the motor used, the belt is tensioned using a spring-loaded roller, if an internal combustion engine is used, or by shifting the frame with an installed electric motor. In addition, they produce protective cover, which prevents sawdust from flying in all directions. On last stage install a container with lubricating-washing fluid (LCF), the tube from which is connected to one of the cutting units.

A small hydraulic jack can be used in the saw blade tensioning mechanism

After assembling the unit and checking the tightness of all bolted connections, install band saw, after tensioning which a trial run of the sawmill is carried out. If the test switch-on is successful, then the engine is turned off and after the saw has completely stopped, the log is laid and fixed on the bed. The thickness of the first board is adjusted using the saw lifting mechanism, after which a test cut is made. The installation is turned off and inspected, a conclusion is made about the operability of the sawmill.

Video: Band sawmill made at home

Thanks to my varied hobbies, I write on various topics, but my favorites are engineering, technology and construction. Perhaps because I know many nuances in these areas, not only theoretically, due to my studies in technical university and graduate school, but also with practical side, because I try to do everything with my own hands.

A gasoline saw is a good assistant when collecting firewood, cutting down trees, caring for a garden, and clearing an overgrown area. Its basis is an internal combustion engine, which is characterized by its compact size, reliability, low weight, and good power performance. Such advantages of the drive allow you to create various original homemade products from a chainsaw: walk-behind tractor, grinder, snow blower, lawn mower, sawmill, electric generator, go-kart, snowmobile. The motor is also installed on a bicycle or boat, making these vehicles more practical. At the same time, craftsmen often use not only the engine, but also other parts from the unit. The difficulty in remodeling lies in the exact size adjustment of the parts of the assembled equipment.

Making a boat motor from a chainsaw is not difficult. The modification is performed as follows:

• remove the bar from the saw;
• instead, a self-made or factory-made boat propeller is attached to the motor using a special adapter;
• the entire structure is then secured to the boat so that the propeller plunges into the water at an angle.

Instead of an adapter, some craftsmen install the gearbox. The possible result of the work is demonstrated in the photo below.

For fishing lovers, a homemade boat motor is economical option, which allows you to significantly speed up movement across the water surface of lakes, rivers, and ponds.

Assembly of the sawmill

When building houses and other structures from logs, it is often necessary to cut them into beams. A chainsaw sawmill allows you to do this as efficiently as possible with good cutting accuracy. At the same time, the instrument itself does not require any modifications. It's easy fixed in the frame made, for example, from metal corners or profile pipes. The processed logs are placed on guides. The entire structure is shown in the diagram below.

IN homemade sawmill the log is not moved: the carriage with the saw moves, fixed at the required height (depending on the thickness of the lumber) with four screws. Due to the fact that the frame moves accurately, sawing occurs carefully and the cut is smooth. The created device (a version of it is shown in the photo below) also allows you to saw boards and prepare firewood without any problems.

A small disadvantage is the formation of a large amount of sawdust. This is due to the significant thickness of the chain.

Homemade bicycle with motor

Craftsmen have come up with many options for converting a bicycle into a moped. Their meaning boils down to the following:

• take a bicycle;
• a motor with a gas tank is attached to the trunk or frame;
• a gearbox (having a gear ratio of 18 to 1) and a special gear are installed;
• additional shock absorbers are installed;
• the brake is applied.

Instead of a gearbox they use two gear pairs, connecting to each other using bicycle chain. Various old bicycles are often taken as a basis (as in the photo below), and more modern (mountain) models are used much less frequently.

Usually a bicycle with a chainsaw engine is made for fun: such a motorbike rides at the speed of a regular one.

Homemade lawn mower

Lawn mowers are machinery for grass cleaning. They are used by owners of private houses and summer cottages to give land plots attractive, well-groomed appearance. Factory-produced models are easy to use, but they are not affordable for everyone. A self-made lawn mower from a chainsaw will cost much less than branded analogues. Its capabilities are quite sufficient for domestic use.

Home craftsmen assemble homemade lawn mowers of various types and capabilities. But any design requires the presence of such elements:

• drive;
• frame;
• pens;
• wheels;
• knives;
• control systems;
• protective casing.

Manufacturing process lawnmowers proceed in the following sequence:

• weld a frame of a suitable size, for example, from metal corners 25 by 25 mm;
• Handles made of iron tubes are attached to the frame using bolts or welding;
• wheels are mounted at the corners of the frame;
• remove the handle and tire from the gasoline saw;
• screw the remaining part of the tool to the frame using studs and nuts so that the gearbox shaft, turned 90 degrees, is directed downward;

• extend the gas cable;
• a telescopic shaft is made from two metal tubes, which is then connected to the gearbox;
• make a knife yourself (for example, from canvas hand saw) or purchase a factory product;
• it is connected to the shaft using bolts or welding.

Will fit stroller wheels, from an old car. If you use pipes of different diameters, you can make a telescopic handle with the ability to adjust its length - this increases ease of use.

Knives there are different designs. Their simplest version is shown in the following photograph.

The presence of a telescopic shaft will allow you to adjust the height of the grass cover left after mowing.

Knives made of high-quality steel are not afraid of encountering small stones. They are capable of mowing even thin bushes. Some craftsmen additionally equip a homemade mower with grass catcher, thanks to which there is practically no cut grass left on the site.

Making a snowmobile

Home craftsmen managed to make a snowmobile from a chainsaw. The machine consists of the following structural elements:

• frames;
• internal combustion engine (ICE) with a power of about 5 hp;
• suspension with a shock absorber;
• steering wheel;
• passenger seat;
• skis or tracks;
• control systems (clutch, gas).

Snowmobile own production can be equipped optionally skis or tracks. If you put skis on, you will get a snowmobile that will be similar to the example of equipment shown in the photograph below. The movement of such a machine will be carried out due to the rotation of the screw. A snowmobile is easier to make than a snowmobile.

When choosing tracks important point is the organization of a well-thought-out unit for transmitting torque to them from the engine. On the created snowmobile, possible appearance which is shown in the photo below, you will need to install a centrifugal clutch along with a chain and belt. To increase the traction capabilities of the drive, it is recommended to equip the track shaft with a gear of a larger diameter than that of the engine.

As a steering wheel This part is suitable from a bicycle or scooter. You can also make it from metal tubes.

The more powerful the installed internal combustion engine, the greater cross-country ability the assembled snowmobile will have.

Creating a trimmer

A trimmer, like a lawn mower, is used to mow the grass in the area. But a brush cutter is used for relatively smaller volumes of work or on uneven terrain, rocky soils. A chainsaw trimmer made independently will cost much less than its factory counterpart. The performance of such a unit is quite high.

The simplest option for creating a brush cutter is to use a special factory attachment for a gasoline saw, the operation of which is shown in the following video.

Snow blower with gasoline saw engine

In order not to throw snow with a shovel in winter time years, it is quite possible to make your own snow blower from a chainsaw. For practical implementation project is needed motor with a power of about 3 kW(4.1 hp), for example, from a Calm saw. In addition to the drive, the snow blower consists of the following components and parts:

• an intake compartment with an auger with blades located inside;
• pens;
• frames;
• snow ejector.

All these nodes are visible in the following photo.

Craftsmen presented models of snow removal equipment with wheels and equipped with sleigh runners. The last option is structurally simpler to implement. A design option for the frame and intake compartment is shown in the photo below.

The main points are selecting a pair of gears and making a good auger (shown in the photo below), which will be driven by a motor through a chain drive.

For the manufacture of intake compartment housings Galvanized steel sheets are suitable. Auger blades are often made of thick rubber. Quite suitable as a snow thrower sewage pipe made of plastic.

Making an angle grinder

Corner Grinder— a multifunctional tool necessary when carrying out a number of works. Despite its availability and prevalence, craftsmen made an angle grinder from a chainsaw (a sample is shown in the photo below).

A disk like this homemade equipment will not be rotated by an electric motor, but by an internal combustion engine from the saw.

Grinder assemblies using special device for a chainsaw it goes like this:

• remove the chain and bar from the gasoline saw;
• install a pulley on the gearbox shaft;
• instead of a tire, they mount a special attachment, also with a pulley, after putting a belt on it;
• tension the belt drive like a chain;
• attach the protective casing;
• install the disc.

A self-assembled grinder-petrol cutter will help with many tasks. practical problems. Its power is sufficient for productive work on concrete.

Assembling a go-kart and buggy car

Karting– these are races on small cars (karts) that do not have a body or elastic suspension at the wheels. Such a machine is designed to drive on flat asphalt surfaces, where it is capable of reaching fairly high speeds.

At home, it is quite possible to assemble a go-kart from a chainsaw and the following parts:

• wheels;
• steering unit;
• frame;
• braking and control systems.

The following video contains a detailed overview possible options homemade go-kart.

A go-kart with a gasoline saw engine is relatively inexpensive. For children it will be a way to have fun.

Structurally and in purpose they are similar to go-karts, but they have a suspension. This feature makes it more convenient to drive over rough terrain (off-road).

Self-assembly of a buggy is similar to making a kart (except for the suspension) and is performed in the following sequence:

• weld the frame;
• make a suspension, for example, a torsion bar type;
• make steering parts;
• assemble the suspension;
• install the steering wheel and rods;
• attach wheels;
• set the brake;
• install a chair;
• secure the engine.

A chain or belt is used to transmit rotation from the motor to the wheel. Accordingly, sprockets or pulleys are installed. To make the car run quieter, the existing one will be improved gasoline saw muffler or make a new one. There are options homemade cars, capable of reaching speeds of more than 40 km/h, so you need to drive carefully so as not to get into an accident.

Electric power generator with internal combustion engine from a chainsaw

Most modern appliances are powered electrical energy. Away from power lines, it is obtained mainly from electric generators. Similar equipment portable type used together with batteries in field conditions. To save money, you can make your own generator from a chainsaw. Its design is shown schematically below.

In the photo above the numbers correspond to the following structural elements portable electric generator:

1. gasoline saw;
2. transmission gearbox;
3. drive belt;
4. tension bar;
5. electric generator;
6. control Panel;
7. clamps;
8. saw stop;
9. fastening nut (designed for attachment to the gearbox frame);
10. drive pulley

Homemade mini-power plants are equipped with alternating electric generators or direct current (for example, from a car at 12-14 V). The value of the output voltage and its other current characteristics depend on this.

Walk-behind tractor for home use

A walk-behind tractor is an agricultural machinery that, thanks to the ability to install various attachments, is capable of plowing and cultivating the soil, making furrows, and also performing other operations. Essentially, powerful models are mini tractors. Factory-produced equipment is expensive; a walk-behind tractor made from a homemade chainsaw will cost less.

Assembly of the unit is not difficult. Device homemade walk-behind tractor shown in the video below.

There are many designs of walk-behind tractors made by folk craftsmen. You should choose the most suitable one based on the available components and functionality option.

DIY agricultural cultivator

A cultivator is a technique designed to loosen the soil layer and cut the roots of weeds in it. The working body of the unit is rotating cutter. Due to its rotation, the cultivator also moves around the treated area.

In terms of power, a motor-cultivator is inferior to a walk-behind tractor. For the latter there is a special cultivating attachment.

A self-assembled chainsaw cultivator is quite suitable for processing small area . The design option is like this homemade equipment discussed in the next video.

Hiller from a gasoline saw

The hiller is a highly specialized technique that is used to hilling potatoes. At the same time, weeds are removed between the rows.

It is not difficult to assemble a hiller from a chainsaw. Its design is shown in the diagram below.

The following design elements correspond to the digital designation in the diagram:

• 1 – motor control handle;
• 2 – cable;
• 3,4, 7, 10 – gear sprockets;
• 5 – chain;
• 6 – wheel;
• 8 – handle;
• 9 – fuel tank;
• 11 – motor mount;
• 12 – platform for the engine;
• 13 – internal combustion engine;
• 14 – frame;
• 15 – plow (hiller attachment).

In addition to the options considered, using the drive from a gasoline saw as a basis, you can make an ATV, mini-helicopter, winch, hole drill or ice drill with your own hands. For most homemade products, an engine with a power of 2-3 kW (approximately 2.7-4.1 hp) is suitable, for example, from Shtil, Druzhba, and Ural chainsaws. But for a helicopter you will need a motor with a large given parameter. To find out the specific amount of power required, in this case it will be necessary to carry out precise engineering calculations.

For remodeling, it is recommended to use an old, inexpensive tool, so that in the event of a quick breakdown of the created mechanism, you will not incur significant financial losses. It is better to use models that are easy to disassemble, and it is not difficult to find parts on them if replacement is necessary. During assembly, you should carefully connect the parts, making sure that they fit together without problems. Pre-created drawings will make the process easier and faster. Anyway homemade unit must be safe.