If you have any hobbies, special tools are usually required. Hobbies are different, respectively, the number of technology is also amazing. It can be very difficult or as simple as the Soviet penny. The first, for example, is a band saw for wood or metal. Use it, of course, not only to meet their creative needs, but also for more serious work. For example, for repair.
What is this tool?
Band saw is a cutting tool, equipped with a multitude of incisors.
Actually, this is just the name of the cutting surface, and the tool itself is called a machine tool. And it can be called a working technique. The band saw itself is a strip of metal, preferably steel, which is coiled into a ring. On the one hand, the teeth are cut, which allow it to work as a cutting tool.
This tape must be installed on a pair of rotating pulleys of the machine - an electric motor with a network connection is used to create movement. This way you can create both straight and curved cuts.
Why do it yourself?
It is preferable, of course, to purchase an instrument in a special store that sells just such equipment. True, there are two "but":
- A price that may seem too high for the average person.
- Functionality – the point here is that the band saw blade is not always included in the list of required tools for the workshop. Most operations can be done without her help, and hence reasons to buy too expensive unit does not make sense.
The second reason basically follows from the first - if the price were not too high, then the majority would have acquired such an instrument. This is logical, because it is very convenient to work on.
The basis of the project presented here is the development of Matthias Vandel, a Canadian inventor who assembled his saw mainly from wood. You might think that for such a tool it is better to use metal, but this is not entirely true.
The band saw machine of such an assembly shows good performance, quite comparable with the purchased models. In addition, the easily replaceable material allows instant repair. The care of the replaced parts will fade into the background.
It is also important to remember that a lot will depend on the selected engine (it is better to use an already finished one), saws for tape machines and blanks.
It is the main supporting element of the whole structure. You need to use a strong wood - in any case not chipboard, not MDF, plywood or furniture board. Perfect for this purpose fit pine inch.
Frame shape - C-shaped. From above it is necessary to make the basis for the guides of the tension mechanism with the upper wheel. On the opposite side are fixed two supports, which in the future will connect with the base. The construction itself is multi-layered - about six layers for strength. But that's not counting the extra overlays.
Phased bonding is fraught with bias and inaccuracies. Because you need to strictly control the perpendicularity of the elements. You can also make a frame without supporting legs, but be sure to leave for them the grooves of the right size.
Engine block upper wheel
This is the second step to ensure that in your hands was a band saw for wood and metal. The block represents a mobile element of a design which provides a belt tension.
The installation takes place on the already prepared frame - the horns of the letter “C”, which remain empty. You need to fix the profile (preferably from hardwood). It is a wooden rectangular frame, inside which there is a movable holder for the shaft of the upper wheel.
Corner joints of the frame can be strengthened inserts. In such work, reliability is in the first place.
Next you need to cut in the corners of the frame corner grooves under the insert.
The unit itself must move freely. In the upper part, make a hole for a long bolt - so the band saw for metal can adjust the tension.
Tilt adjustment must be installed in the shaft holder - usually a screw is used for this purpose. The holder itself is fixed in place with two self-tapping screws. To achieve the desired mobility in the future, you need to leave enough play.
Under the screw the lining from metal is established, and the shaft after adjustment will be fixed by means of the next self-tapping screw.
It is appropriate to use those materials that were rejected earlier. For example, MDF or particleboard. The design, on the basis of which the band saw is assembled, provides for the size of wheels with a diameter of forty centimeters. The thickness may be different, but about two or three centimeters.
The design here is also glued, from several layers.
The crucial moment, as you can guess, is the central part.
You can make the wheels on a milling machine. For convenience, immediately drill a hole in the center to align the circles, and also try to leave about a centimeter for finishing after assembly.
You need shafts for finished bearings, with stop and internal thread on opposite sides. Flanges can be made from the same plywood. They consist of two parts - the first one holds the bearing, and the second provides a gap between it and the wheel itself.
The diameter of the drilled hole should not strictly correspond to the threaded shaft - it is better that the first was slightly larger than the last.
You will need two wheels, as the band saw on metal or wood provides such a design. They are the same in size and are made at the same time.
Also so that the saw band does not slip off, you can give the initially round wheels a slightly barrel shape - this will help avoid many problems. The angle of the bevel on each side must be made at five degrees.
On one of the wheels, you install a regular drive pulley fitted to the belt used.
The last part of the work - balancing. For this, small bearings are used as support for the belt. The time axis is mounted horizontally, the bearings mentioned earlier are installed, and light rotation starts.
To improve performance, you can make several recesses in the lower part of the back side of the wheel - this helps to avoid rotation in any position.
The top is set first. Washers are put on the shaft. The wheel itself must be fixed with a bolt plus a thick washer. This is screwed into the end of the shaft. Using the adjusting screws, install it parallel to the frame.
The lower wheel block is fastened with clamps, after which it is hung on the frame. Next, expose the wheels so that they represent a single plane, simultaneously parallel to the vertical rack. After do not forget to fix the lower shaft.
Saw blade guide setting
Some skill is required here - one of the ends of the belt (which is smooth) is pressed against the outer ring of the bearing.
From the sides it should be held. You can use fluoroplastic "crackers", but the tree is better suited - the latter wears out more slowly.
The protective casing is simply a cut pipe, securely fastened with screws or screws.
The tire must be installed with the utmost precision - for a band saw, any bias will be noticeable. The tire is mounted in the frame with a groove. You can mark everything on a wide canvas.
If you make a mistake with a groove, then simply expand it and make a corner of metal and a lining of pieces of paper pasted on it. Thus, the tape should stand up straight. The corner, of course, must be carefully fixed.
The latch is equipped with two holes. The first is used to press the tire as securely as possible, and the second - only when working with very thick blanks. It allows you to raise the first part.
Instead of conclusion
A very important procedure is sharpening band saws.
Moreover, the teeth should be smooth, otherwise the device will quickly become blunted. You can use a normal grindstone. Depending on the material of the saw – corundum, or diamond elborovyh. You also need to bring the work to the end of the fine-grained whetstone.
The main thing in this process - to approach the matter with intelligence and patience. Tape saw, self-created, - time-consuming and long-term project. Errors are not allowed here. But if you do everything according to the instructions and consult the advice of specialists, then soon a new tool will appear in your workshop.
So, we figured out how to do a band saw with his own hands.