People who at least once faced with the construction of wooden buildings, understand the need for power-saw benches. Manual preparation of wooden elements requires a lot of time and effort. Sawmill is homemade.
The construction market offers many different devices for sawing wood. However, if the amount of woodworking or carpentry work is not large enough, then the need for significant financial investments is in doubt. The power-saw bench self-made will fit into the sizes of a site and will help to get rid of excessive expenses.
General concepts about power-saw benches
The main purpose of the sawmill is longitudinal sawing wood. Thus, it is possible to make timber, plank, rail, etc. In addition, it can be used for transverse cutting of wooden products and cutting branches and other irregularities. All power-saw benches include the following basic elements: cutting tool, frame (base) of the machine, tool guides and wooden workpiece, drive for cutting tool.
By type of cutting tool can be distinguished disc, chain saws and saws. The most simple disc sawmill, which is based on sawing wood with a rotating circular saw. In this case, the disk attachment unit is stationary, and the wooden blank is fed progressively.Back to table of contents
Circular sawmill design
Scheme homemade sawmill.
The simplest design has a home-made power-saw with a circular saw. Such a machine consists of a workbench with a flat wooden tabletop, mounted on the bottom of the tabletop workbench of an electrically operated circular saw, a guide rail. The wooden blank is fed to the circular saw longitudinally, manually. In the worktop table is cut for the entry of the cutting disc. The disk itself is mounted on the shaft of the electric motor, which is permanently mounted on the workbench. A guide bar is installed on the table top, limiting the lateral displacement of the workpiece during sawing.
If it is necessary to cut large workpieces, for example, a chipboard sheet, then manual feeding of the workpiece is very difficult. In this case, it is necessary to complicate the design of the base of the sawmill. The workpiece is mounted in a carriage that has rollers for movement along the machine frame along the guide rails. This design allows you to facilitate the manual submission of the workpiece to the cutting tool.Back to table of contents
Sawmill manufacture: simple design
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Tool and equipment
For the manufacture of self-made sawmills need to prepare the following equipment and tools:
Tools for the manufacture of sawmills.
- welding machine;
- electric drill;
- a set of taps and dies;
- hacksaw for wood;
As a simple design is recommended sawmill from the grinder. The base (frame) of such a sawmill can be made of a metal corner or a wooden bar in the form of a table. You can use any durable workbench without a tabletop. Height is selected at the discretion of the consumer, taking into account ease of maintenance.
The table top is made of chipboard sheet 18-20 mm thick (width and length - in accordance with the dimensions of the stand with an allowance of at least 10 cm on each side). The surface of the tabletop can be revetted with a thin metal sheet. In the central part (along the length), having deviated from the edge by about 1/3 of the sheet width, a slit is cut, 40-50 mm in length greater than the diameter of the cutting disk, and at least 20 mm wide.
The scheme of fastening the brackets and the rod of the sawmill.
The standard disk of a circular saw with a diameter up to 500 mm is fixed on an electric motor shaft. The disc is immersed in the slot tabletop, and the electric motor is securely fastened to the tabletop. As an electric motor, you can use the drive of the grinder, having a power of up to 1.8 kW. In this case, the casing of the grinder is attached to the table with clamps and securely fastened with screws. The cutting disk fastens on a shaft of the Bulgarian with standard fastening. The disc protruding from the back of the tabletop must be at least 100 mm.
The table top is attached to the frame so that the Bulgarian is inside the frame, i.e. on the surface of the workbench, only a part of the cutting disk protruding above the slot is visible. The guide bar is made of a board about 20 mm thick and at least 80 mm wide. Board length corresponds to the length of the table top. At both ends of the board, standard clamps are fastened for fastening to the table top. The clamp can be made by yourself, if you bend at right angles a steel strip 3-5 mm thick and about 20 mm wide. A threaded hole is drilled in the lower shelf of the strip and a screw (M8) with a thumb is screwed in. In the vertical rack strip, two holes are drilled for fastening to the end of the guide bar. This self-made clamp allows you to fix the guide bar at any point on the edge of the tabletop. To ensure accurate fixation of the strip on the table top along the transverse end, it is advisable to make a marking. After that, the guide bar is mounted on the table top in the right place.
The assembly scheme of a self-made sawmill.
Homemade sawmill from the grinder is ready and works as follows. The electric motor of the grill is supplied with voltage from the mains.
The guide bar is fixed with the help of clamps on the base so that when the support is placed on it, the workpiece is sawn at the required width. The wooden blank is manually propelled to the disc. Turns on the machine, and the disk starts to rotate. Slowly moving forward, the workpiece is sawn.Back to table of contents
Sawmill for overall products
The main difference of a powerful power-saw bench from a simple design consists in execution of the case (framework). The frame of such a sawmill is made of steel angle not less than 50x50 mm. The legs of the frame can be made of a pipe with a diameter of at least 50 mm. The width of the upper frame reaches 2.5 m. The total length is better to provide about 6 m. This length can be achieved in two parts, which are installed as needed. The structural elements are welded together. The top of the frame is welded in a rectangular frame.
Through each meter of the length of the frame should provide cross jumpers from the corner.
At one end of the upper frame, along the end, the channel is welded along the entire length as a guide rail for the carriage. Another similar rail is not welded and has clamps at the ends for fastening to the frame in the right place. The internal profile size must correspond to the dimensions of the rollers (wheels) of the carriage.
The carriage is made in the form of two steel corners with a size of at least 50x50 mm. On both sides of the corners, the shafts are welded to install the rollers. Rollers with a diameter of at least 40 mm must have bearings and are usually made to order. However, bearings with a diameter of at least 40 mm can be used as rollers. Rollers (bearings) are pressed on the shafts. The number of rollers is from 4 to 8 on each side, depending on the size of the carriage (at the rate of 80-100 cm between the rollers). At the ends of the guide clamps are placed for securing the workpiece.
The drive is carried out by a circular saw from the engine with a power of 5-6 kW. It is attached to a steel plate with a thickness of at least 10 mm. The engine plate is attached under the frame frame so that the disc overhangs above the frame surface to be at least 100 mm.
The principle of operation of such a sawmill is as follows. The chipboard sheet is fixed between the carriage runners with the help of clamps, ensuring the rigidity of the carriage. Runners carriages are combined with the rails of the frame. Circular saw is activated. The sheet moves manually forward, at the same time the carriage moves on rails.