Grinding machine with your own hands. Wood grinder: What operations are performed using this tool hand grinding machine with your own hands

Greetings all those who work with metal and not only, I present to your attention a simple, convenient, powerful grinding machine. With this you can easily and quickly form squeaks on knives, sharpening axes and many other tools, perform grinding and so on. As a power unit, a 220V engine is used with a capacity of 2 kW, whose revisions are 2800 per minute.
The strap on the machine is set with dimensions 1000x50, and the speed is 20 m / c.

This is very convenient to use, the belt changes in it quickly. He is also reliable, there is almost nothing to break, such a powerful engine is difficult to overload. Motion is also easily easily from available materials. The most important thing is to find a suitable engine for homemade. So. Consider in more detail how to collect such a machine.

Materials and tools used by the author:

List of materials:
- engine 220V, 2 kW, 2800 rpm;
- square steel pipes;
- Sheet steel;
- Wires;
- Nuts and bolts;
- shock absorber (will work as a stretch);
- finished wheels (or they can be pulled out of the tree itself);
- Paint.

List of tools:
- cutting machine or bulgaria;
- drilling machine;
- Bulgarian;
- vice;
- welding machine;
- Chisel, hammers, spanners other.

The process of making a ribbon grinding machine:

Step one. Basis and stand
And as the basis, we will need thick sheet steel. Metal must be strong, because we will clipping the engine, as well as weld the rack. We choose a suitable piece of metal and place. In the corners of the sheet, the author drills the holes, they are needed in order to fasten the legs. The legs will need rubber, secure them with bolts with nuts, so our machine will not walk on the floor and will be confidently fixed.

Next, prepare the blanks for the manufacture of the rack. We have a telescopic rack, that is, it is a pipe larger and smaller diameter, they enter each other. Sut off the desired pieces of pipes on the cutting machine or a grinder. Further, more widely welded vertically to the base. The pipe must be welded smoothly and firmly as possible. Use the corners to welcome the pipe strictly vertically. That's all, the rack is ready, go further.

Step second. Adjusting knot
Production of an adjustment node is the longest in this homemade. This node is needed to change the angle of the upper slave wheel. Thanks to this parameter, we center the belt on the wheels. This node is made from steel plates, the process of assembly and operation of this node is shown in the photo. There is nothing complicated in the manufacture, cut the blanks, drill holes, cut the thread where it is required.

Then this adjusting unit is assembled on a long steel plate, which is welded horizontally to a thinner steel pipe that is extended.

Step Three. Assembly
The author showed us only the highlights of the assembly of the machine, other details were behind the scenes. For example, you will need to establish a certain spring, which will "push the telescope" and thereby stretch the grinding tape. The author has a shock absorber, something like this can be found in some washing machines. You can also accommodate the old Soviet aluminum pump for this, setting inside the spring.

You still need to install the work plane on the frame, it is a table and a stubborn area. This is all done from the sheet metal of a suitable thickness and there should be no problems with this.

As for the wheels, they can be pulled out of wood itself, a plywood is suitable as a material, several layers need to be glued to obtain the desired thickness. Pull the wheels on the lathe or on the engine you found for grinders. The leading wheel is fixed on the engine shaft, and the slave rotates on the bearing.

Grinder (eng.) Literally - Crusher. MEAT Grinder is a meat grinder, Rock (Stone) Grinder - stone coast; Stick (Wood) Grinder is a garden crusher of branches and rods in chip. But there is the meaning of the word Grinder completely unequivocal: in mechanical engineering and metalworking is a grinding machine. The thing on the farm is useful. For example, send the smashed meat grinder knife on Bruke-dowdow is manually impossible. On the hand cleaner for knives - somehow possible, having a solid worker skill. And in Grinder - no problem. The same thing - if you need to inch a detail of a complex form without breaking its profile. Or just sharpen scissors or professional knife. Miscellaneous kind of wood cutters and metal is best to rule in Grender. Describe and reclose the same Grinder with their own hands possible, without having complex equipment and skills to work on it. For money, this will mean savings from 50-90 thousand rubles. up to 3-6 thousand USD.

To make Grinder independently, it will be necessary to order a maximum of 4-5 accurate parts, and it is often possible to do without turns without turning on the part. For example, how to make the simplest Grinder literally from the rubble, see the video below:

Video: Ribbon Greenover with her hands

Or another option, how to make Grinder early and worse from scrap metal:

Video: Grinder from scrap metal

Disk or tape? And drive

The varieties of grinding machines in the industry are hardly not more than larger than the turning ones. The emerats known to all craftsmen - a motor with a pair of grinding circles (or one circle) is also Grinder. For myself, at home, it makes sense to do either a disk end (plate), or a ribbon grinder. In the first abrasive is applied to a rotating hard disk; In the second - on the elastic ribbon, the luxurituing system of pulleys and rollers. The disk is more suitable for grinding simple wooden parts and coarse or medium purity - metal. On the ribbon grinder, it is also possible to produce accurate and clean finishes of profiled parts of a complex shape, incl. Large, see below.

Disc Grinder is very simply from the very essay or suitable motor power, see below. It is necessary to order an adapter from the electric motor shaft under the shank of a plate grinding circle on a metal basis. Or under the clamping cartridge, then on the same motor it will be possible to build a mini lathe, see Fig.:

"Plate" is worn out: a disk from a thin (4-6 mm) fibrous plastic is placed on the edge of its side, and the abrasive is on it. How to make the end grinder, see the next. roller.

Video: homemade end grinder

The difference between the disk and tape grinder is not only in the possibilities of use. If you take ordinary home crafts, then for disk grinder, there is enough drive power in 250-300 W on the shaft. For small wooden parts - and 150-170 W. This is a motor from the old washing machine, direct (ordinary) drill or screwdriver. But for the ribbon Greenman, you will need the engine from 450-500 W: three-phase with batteries of launchers and working capacitors. If it is assumed to be processed largely, then the power of the motor is from 1-1.2 kW. Moreover, the batteries of the capacitors for the other will cost the slightly cheaper of the engine itself.

Note: The capacity of 100-200 W uses a ribbon mini-grindder (see below) for the exact edit of knives, grinding / polishing jewelry, etc.

A drill or screwdriver as the Greendera drive is also convenient and that they allow you to quickly change the speed of the abrasive movement (see below) by the regular regulator of the rotational speed. It is only necessary, first, to make a holder for a drill, a hard locking tool. Secondly, an elastic transitional clutch with a drill on a disk shank, because It is difficult to achieve their accurate centering without special equipment, and the beat will reduce the accuracy of processing and can damage the drive tool.

Drawings of a drill holder for using it as a home metal cutting machine drive left on Fig.:

Since the shock and irregular signage of the drive in the Greender are an order of magnish lower than, let's say, in the lathe, the drill holder for it can be made of solid wood, plywood, chipboard, MDF, on the right in Fig. The diameter of the fastening (large) hole - on the neck of the drill. The drill is very desirable to use without a shock mechanism and with a steel shell with a neck (under the installation of the front handle).

Coupling

For the transition clutch, you will need a segment of a steel rod (not necessarily accurate) of the same diameter as the shank of the Greendera drive shaft, and the segment of the reinforced PVC hose (garden irrigation) with a lumen so that it is tightly tensioned on the rod and shank. The length of the "free" hose (between the ends of the rod and the shank in it) is 3-5 cm. The length of the protruding part of the rod must be sufficient for a reliable clamp in the drill cartridge. After assembling the coupling on the spot hose on the shank and rod tightly tightened by clamps; Can be wire. Such a coupling completely parries the drive mecentric and the slave shaft to 1-1.5 mm.

Ribbon is still better

Ribbon Grindder allows you to do everything as disk, and much more. Therefore, further we focus on how the ribbon grinding machine do it yourself. Lovers, focusing on industrial samples, make Grenders sometimes very intricate, see Fig.:

And this is justified: the design and kinematics of the ribbon grinder are very plastic, which allows you to successfully use sweater materials and old metallowers. You only need to follow 3 principles:

1. Do not do as on the second on the left photo of Fig.: Tape abrasive side should only be constructed by the processed part. Otherwise, abrasive will eat and roasting rollers, and themselves. The accuracy and purity of processing throughout the operating operation will be unpredictable;
2. The design of the machine should provide a uniform tension of the tape regardless of the nature of the operation produced;
3. The speed of the tape must comply with the character of the operation.

Kinematics and design

As mentioned above, the designs of Grinders have many. Consider, from what and how to build Grinder to yourself, it is better to focus on industrial samples, designed fully mechanized for accurate and clean grinding of large-sized profiled parts: once "skin" as it is necessary to blade the propeller of the aircraft or wind turbine, then with any other work it will cope.

The kinematic schemes of the Grenders of the specified purpose are given in Fig.:

Major kinematic schemes of ribbon grinding machines (Grinders)

Pos. A is the most complex and perfect, with three rocker. If the length of the tension roller roller approx. 2 times less than the worker, then, adjusting the tension of the springs, you can achieve a uniform tension of the tape with a course of a working rocker at 20-30 degrees up and down. The slope of the bypass rocker, firstly, the machine is reconfigured under ribbons of different lengths. Secondly, in the same way, you can quickly change the tension of the tape for different operations. The working branch of the tape can be any, except running from the drive pulley to the stretch roller, i.e. Grinder with 3 rockers at the same time and horizontal, and vertical.

The scheme with a coaxially swinging rocker (pos. 2) is easier, cheaper and according to the processing accuracy is not inferior to the previous one, if the length of the rocker between the axes is at least 3 across the processed parts. To bring down the grinding profile, the course of the rocker is limited to the stops within 10 degrees up-down. Press the ribbon to the details most often gravitational, under the weight of the rocker with the roasting pulley. Tension tape is possible in some limits to quickly change, tightening the rocker upwards of a weak adjustable spring, partly compensating for its severity. Grinder of this scheme can work as grinding for small parts from the trail. In this case, the risk is rigidly fixed horizontally, and the working surface of the tape will be a circular pulley. According to the scheme with a coaxial rocker, for example, a popular BTS50 Grender is quite popular. The shortcomings of the scheme, firstly, technologically complex coaxial with the leading rocker hinge. Secondly, the need for elastic ribbon: if they make the watercolor pulley with sliding spring-loaded, the processing accuracy drops. This disadvantage in the processing of small parts is completely eliminated by an additional tensioner, see below.

The scheme with one unauthorized rocker in the industry is quite rare, because In principle, it does not allow to achieve uniform tension of the tape. However, it gives accuracy, quite sufficient at home and allows you to build a very good simple Grinder.

What is what good

Now let's see what is possible to "squeeze" from a particular scheme from the point of view of the amateur masters. And then let's try to figure out how to make a tape for the Greenman and do without custom-made accurate parts.

3 rockers

Competent lovers of their grinders build just according to the scheme with 3 rockers, on the left in Fig. below. The blades of propellers are ground not all, but in this case there is another dignity of this scheme: if the Grinder is used as a vertical, then the working branch of the tape is elastic. This allows a skillful master, let's say, cutting cutting edges and blades literally with micron accuracy.

In industrial grinders for home use, a scheme with 3 rockers is also used widely (in the center) for the same reasons. Repetitions themselves in most cases are quite possible. For example, the drawings of the popular KMG Greenman can be downloaded abroad.

Sizes, however, inch - American machine. To drive, in any case, it is possible to use an angular drong-grinder (right in Fig., It is quite suitable for power) with homemade pulley and rollers, see below.

Note: If you do a landline drive, try to get an asynchronous motor for 2-3 speeds from the unsuitable wash with a horizontal tank. His advantage is small revs. This makes it possible to make a leading pulley of a large diameter and thereby exclude the slipping of the tape. Squad tape in work - almost certainly spoiled item. Most of the styrels with 2-3 high-speed asynchronous motors at 220 V - Spanish. Power on the shaft - 600-1000 W. If you score on this, do not forget about the standard phase-shifting capacitor battery.

Coaxial rocker

In the pure form of Grenders with coaxial fishers, lovers do not make. The coarse hinge is a complicated thing, the elastic ribbon does not do it, and the purchase is expensive. Grenders with a coaxial rocker house are most often used in the embodiment for small accurate work from the table, i.e. With a rigidly fixed horizontal rocker. But then there is no need for a rocker as such.

An example is the Mini Grinder, the drawings of which are given in Fig.:

Its features, firstly, the invoice for the tape (pos. 7), which significantly expands the possibilities of using. For example, the piece of iron is ruled on this Grinder with an angular focus literally in itself. In this case, Grinder works, if you can put it like that, as a self-moving donel (emery bar). Removing the bed, we get Greender with an elastic ribbon to accurate grinding / polishing rounded small details. Secondly, the stretch shaft (pos. 12). Pulling it with the grooves with the nuts, we get a relatively fixed tension of the tape to work with bed. And letting the nuts, we translate Grinder to the gravitational tension of the tape for thin works. The drive is not necessarily through the pulley (pos. 11). You can be tied right behind the shank of the leading shaft (pos. 16) from the drill through the transition clutch, see above.

Specialized instrumental Grinder (eg, for the guidance and editing of turning cutters) generally loses any similarity of the source scheme. Motor for it takes high-speed (power 200-300 W enough). Leading pulley, respectively, small diameter. Pulley pulley, on the contrary, make more and more, for inertia. All this together allows you to reduce tape beats. Tensioner roller with the same purpose, plus for greater uniformity of tension tension, remove away and spring up the long non-very strong spring. How to make Grinder to treat cutters, see the video below.

Video: Grinder for making cutters

One rocker

In amateur practice, Grenders with an unauthorized rocker is good because they don't need exact details at all. For example, hinges can be made from card loops. At the same time, processing accuracy remains sufficient for ordinary amateur requests.

The initial scheme in this case is also modified: the rocker is rotated 90 degrees, referred up and spring, on the left in Fig. It turns out a simple vertical grinder. And, which is important - without any problems working with a homemade negress tape. Provide tension of the tape can spring as stretching (center) and compression. The force of her is not the essence as important, if only the ribbon in the process of work did not burn excessively. No adjustments for the time of use are required.

Consumables and details

The only consumable material for the ribbon grinder - tape (not counting lubricants for bearings and hinges. The tape can order the desired length (see at the end), but it can be done independently from the emery skirt on a textile basis. It is very desirable - flexible, unprofitable. In general Procedure for manufacturing tape for the Greenman with their own hands:

• Sut off the workpiece - the strip of the desired length and width.
• We prepare the mandrel (not necessarily round) lengths by forming slightly less than the length of the tape.
• We supply the mandrel with the workpiece outward.
• We bring the ends of the workpiece exactly and fastened and securely.
• We put on the joint of the adhesive of the adhesive rod for the thermoclate gun.
• Gray with a construction hairdryer until the glue is melted.
• We put on the bog of a thin tissue lat.
• Click something tough through the Teflon film until the glue is freezing.

There are three significant points here. The first - instead of the fabric on the latch, use a rough film from PET with a thickness of 25-50 microns (for sale). It is very strong, but try to spend your finger on a bottle of Pat. Not really slippery? A rough PET film under the tension will not stretch over polished metal. And instead of the margin, it is better to flick the offstand of the ribbon of a solid strip of the PET film with an adhesive by 2-3 cm. The tape beating will be no more than 0.05-0.1 mm. It is less than from the thinnest Mitkal and even less than the error of the thickness of the billet skin.

The second is the finished tape in the machine and graze it without a strong push something indecent. The rubber on the seam is missed, and the tape will become no worse than the brand name.

But the most important thing is to elasticity the best glue for gluing the Greender tape is not expensive and complex in the use of thermo- or assembly, but an ordinary PVA. If the tape is saved by lining along the entire length of the inside, then it is enough for its durability with an excess. How to chase the ribbon for the Greenman PVA, see Roller

Video: Bonding ribbon for Grinder glue PVA

Pulley

The forming (side surface in the context) of the GRINDER pullee should be straightforward. If you use the pulley barrel, the tape will be angry through the entire length. The rollers do not allow it, see further, but the forming pulley should be straight.

The pulley for Greenman, not intended for particularly accurate work, firstly, should not be accurate. In a scheme with 3 rockers, the tape beating from its route will go out on the rollers before it comes to the working branch. In a simple vertical grinder, the tape is sufficiently extinguishing the stretch spring. Therefore, the pulley for the Greenman is quite possible to do without a machine, see video:

Video: leading wheel on Grinder without lathe

The second is a pulley, rollers and in general all the details of the home grinder is quite admissible to do from plywood. In production, this is definitely not an option, even if plywood Grinder will offer a gift with a surcharge: a salary grinder is needed, and the Wooden Grinder in the workshop is completely causing before it and itself. But you will not chase Greentand the day every day in 3 shifts. And on plywood pulley no ribbon is slipping. Including homemade. So you can safely do the pulley of the Greenman from Plywood:

Video: Pulley for Greenman from Plywood

It is much more important to correctly calculate the diameter of the pulley by motor turnover and the required speed of the tape. Too slowly running tape will tear the material being processed; Too fast - herself erased, without finishing anything. In which case, what ribbon speed is needed this special conversation, and very difficult. In general, the smaller the abrasive and the harder material being processed, the faster the tape should move. How the ribbon speed depends on the diameter of the pulley and turns of the motor, see Fig.:

Fortunately, for most pairs, abrasive material The permissible limits of the speed of the ribbon movement is quite wide, so the pulley for the Greenman can be chosen easier:

Video: What a wheel is needed for a ribbon grinder

Videos

Greenman's rollers, oddly enough at first glance, the most responsible details. It is rollers holding a ribbon from slipping and provide its uniform tension in width. Moreover, the roller in kinematics can only be one, see for example, the video is higher about Grinder for the cutters. They will cope with such a task only by barrels, see below. But the "trough" of the tape after any roller should straighten before it comes to the working area.

Rollers with flames (sides, rags) can not hold the ribbon. The point here is not only and not so much with the distortion of the axes of the rollers: the Greenman's tape, unlike the drive belt, must withstand, not sliding, load from the processed parts. If you make rollers with flavors, then a little touched something to the tape, it will turn off on the flavor. In Grender, it is necessary to use rollers-keg type 3 (highlighted in red on the left in Fig.).

The size of the rollers is also given. Type 3. The diameter of the rollers is desirable to take no more than 0.5 widths of the tape (so that the "trough" is not left away), but not less than 20 mm of steel accurate and at least 35-40 mm plywood. The tensioning roller (the probability of climbing the tape from it is the largest) if the working branch of the tape does not come with it, it can be a diameter of 0.7-1.2 its width. Plywood rollers are made in the form of a thick shell, in which the bearing will be filled; Then the roller is satisfied with the axis (in the center in Fig.) And it is perfectly processed, see for example. track. video:

Video: Roller-barrel for Grinder

Turn the roller-barrel profile exactly according to GOST may and on the machine not any turner. Meanwhile, there is a way to make rollers for the Greenman without significant difficulty. It will help all the same garden reinforced PVC hose, right in fig. Previously. On the blank of the roller with a direct forming tightly stretch its segment and cut off with a margin along the edges in the thickness of the hose wall. It turns out a roller with a complex profile forming, even better holding a tape and giving it "trough". Do not believe? Try to get on the cemetery of aircraft or rockets and dig in them. You will find rollers with exactly the same profile forming. Just into the mass production of the rollers of a complex profile is much more expensive than the barrels type 3.

And another option

All responsible details of the Greendera are a solid tape, a coating pulleys, excluding its slipping, rollers - can be purchased separately. They will cost not so cheaply, but still not thousands of foreign and not in dozens of native "cosuh". The remaining parts of the Greenman, or flat, or out of proftres, are manufactured using conventional desktop drillings or drills. This is where you can order the details for the Greenman:

• //www.cora.ru/products.asp?id\u003d4091 - Tape. Make lengths and widths at the request of the customer. Consult on abrasives and processing modes. Prices are acceptable. Delivery time - Questions to Ruchkut.
• //www.equipment.rilkom.ru/01kmpt.htm - spare parts (components) to grinding machines. There is everything, the prices are divine. Delivery - see before.
• //www.ridgid.spb.ru/goodscat/good/listall/104434/ - The same, but foreign production. Prices are more expensive, delivery is the same.
• //www.pk-m.ru/kolesa_i_roliki/privodnye_kolesa/ - Drive wheels. You can find suitable for the Greenman.
• //dyplex.by..ru/bader.html, //www.syndic.ru/index.php?option\u003dcom_content&task\u003dview&id\u003d36&itemid\u003d36 - spare parts for grinders. Ribbons to order do not do - choose according to the catalog. Rollers without axes; The axes are sold separately. The quality is impeccable, but everything is very expensive. Sending - within 2 weeks to the border. Then - the customs of them, our customs, Rudskaya. Total approx. 2 months. Maybe not to go if some local chinch considers the goods with sanctions. In this case, with the return of the supply of problems there is no problem for a complete lack of real opportunities for an ordinary citizen of real possibilities.
(2 estimates, average: 5,00 out of 5)

Grinding or polishing machine is required to perform painting works. In the stores of tools and other outlets, many models of such devices are presented. However, in some cases it is advisable to create a polishing machine with your own hands. This article discusses various versions of such homemade devices and described the process of their creation.

The simplest polishing machine

Most easily make your own polishing machines designed to work with grinding discs. The following main details will be required to create this device:

• electric motor;
• power Supply;
• battery.

The electric motor can be removed from various electrical tools and appliances. So, for example, the components of the power supply of the computer or drive are suitable.

You can also use an electric motor from the fan, and a household battery is suitable for the drive of the electric motor.

In addition to the named components, the board will need, it must be pulled out by sandpaper. Next, the battery and the electric motor are fixed on the board and connect them with wires. Also in this electricity it is necessary to install the switch, consolidating it on the board. Wires should be fixed by the stapler to avoid breaking.

The working element of the design under consideration is represented around. You can use branded products or you can make a grinding disc from sandpaper with your own hands. To do this, it is necessary to cut two sectors from the fragment of the source material and bore them with each other with the tile sides, gluing.

To ensure the drive of an abrasive disk from the axis of the electric motor, two sleeves will be required. The diameter of these fixtures is determined based on the corresponding engine axis parameter. It should be borne in mind that various electric motors have axes of different diameters. The considered grinding machine can be used for processing both wooden and metal surfaces, including in body work.

Motor and polishing discs

Remember that the functional parameters of such a homemade grinding machine are determined by separate parts from which it is collected. In this regard, the electromotor from the fan should be used, since the computer from the computer has a smaller power, which may not be enough for some types of work. In addition, grinding discs from emery paper are not optimal adaptations of this type. Instead, you can purchase corrosion circles of a small diameter, for example, for a drill.

You can create with your own hands and a more powerful stationary version of the grinding machine. For it, you can use the engine from the washing machine and equip the grinding circles of large diameter. In addition to polishing, it is possible to install sharpening and abrasive discs on such a device.

Ribbon grinding machine

The working element of the type of type under consideration is the abrasive grinding tape. The principle of functioning of ribbon devices is to rotate the abrasive tape connected to the ring driven by the engine through transmission and drums. One of the drums is the leading, and the other - the slave. The first of them has a drive from the electric motor through the transmission, presented usually belt transmission.

Some ribbon grinding machines are equipped with a device that allows you to change the speed of rotation of the leading drum, which ensures the presence of various modes of operation. The tape can be located on the bed vertically, obliquely or horizontally depending on the device assignment. To adjust the degree of tension, it serves a tensioning roller. Since grinding work is characterized by highlighting a large amount of dust, it is desirable that the grinding machine is equipped with an exhaust device.

It should be borne in mind that many design features of the grinding machine, such as, for example, the diameter of the drums, the speed of rotation, the grain size of the abrasive ribbon, the design of the desktop, which determine the basic functional parameters of the device under consideration, are selected depending on its purpose. The following variants of the working surfaces classify, on the processing of which grinding machines are oriented: curvilinear, flat, edges and ends, intermediate layers of paint and varnish coating.

What makes grinders?

You can create with your own hands a belt grinding machine based on an industrial design, which provides for the movement of the tape over the flat surface of the desktop by the abrasive part outward. In this case, the self-made device will differ from the branded analogue with large sizes and stationary installation. For these work, an electric motor will be required, for example, from a washing machine, wooden or metal panel, chipboard, material for abrasive tape, glue.

Since the transmission in the form of a gearbox or belt transmission significantly complicates the design of the tool under consideration, they try not to use it on homemade models. To do this, you can equip the device with an electric motor with a capacity of 2-3 kW with a rotor rotation frequency of 1500 rpm.

In this case, with a radius of the leading shaft, 10 cm tape will move at a speed of about 15 m / s. It should be borne in mind that the design under consideration does not provide for the presence of adjustment of the speed of the ribbon. However, it is possible to adjust the degree of its tension due to the fact that the tensioning shaft rotating on the bearings to reduce friction is fixed on the stationary axis, which can be shifted relative to the desktop. The presenter shaft is fixed on the motor shaft.

The desktop for such a grinding machine can be made with your own hands from a wooden bar or sheet metal. It should be borne in mind that metal options allow processing more complex items. The size of the desktop of the considered tool is determined on the basis of the size of the tape and the distance between the axes of the shafts, as well as its destination. Near the shafts in the desktop should be done in the aim of ensuring a smooth contact of the ribbon with it.

Drums can also be made with your own hands. You can use chipboard as source material for these items. Squares are cut from the slab with the lengths of the parties 20 cm in such a quantity so that their overall thickness when overlaying each other was about 25 cm. The billet data should be converted into the disks with a diameter of 20 cm by treating on the lathe. You can process the chopped fragments separately, however it is more convenient to catch all them immediately, putting on the axis and climbing. It should be borne in mind that the drums must have the edges of the larger diameter in comparison with the central part to automatically hold the tape.

Where to take a ribbon?

Grinding tape can be made with your own hands based on paper or tissue. The second option is considered more preferable. The fabric can be represented by bump or sarge. It is also necessary to take into account that rare filling of the tape with abrasive grains, which makes up less than 70%, reduces the degree of filling in its dust during operation.

The main characteristic of the abrasive ribbon is considered grains. This parameter is determined based on the number of the sieve through which they can leak. In size of grains, abrasive ribbons are divided into coarse-grained (12-80), mediterranean (80-160), fine-grained (160-4000).

Abrasive grains can be represented by artificial materials or minerals with high hardness, such as, for example, silicon carbide, corundum. They are fixed on the basis of gluing either by electrically. In the first case, the grains are evenly poured on the surface of the base, pre-coated with the adhesive in the form of synthetic resins of either the metering glue. The electric field is used to orientation of abrasive grains with sharp edges upwards, which increases the functionality of the tape.

The ribbon for the grinding machine can be made with their own hands from the sandpaper in the form of rolls, which are cut into fragments of the desired size.

It should be borne in mind that the length of the tape is determined by the method of fastening the ends of the cut fragment. Perhaps their connection at an angle, dressing and mustache. In the first case, the ends are trimmed at an angle of 45 ° and glued a linen pad under the joint. The compound of the flame implies the preliminary cleaning of the hot water fragment of one of the ends of 8-10 cm from abrasive grains. Then the purified area is covered with glue and impose on it the back side of the other end of the tape and compress the connection location. The optimal thickness of the abrasive tape is 200 mm. Roll of source material 1 m long enough for 5 tapes.

The face needs to be cut with their own hands from a thick sheet of metal. At the very least, one of its sides should be smoothly circumcised to attach the platform with an electric motor by screwing three bolts through the holes previously drilled in the bed.

The homemade grinding machine is not so rare, it is quite possible to assemble it.

The grinding machine is indispensable when finishing parts from wood.

Grinding machine - the thing you need and in the farm will always come in handy.

If you have spare parts on your hands in large quantities, besides there is free time and the desire to try yourself as an engineer-designer, then a homemade grinding machine in your hands will be suitable for work.

So you will need:

• motor (its role can perform any other motor taken from any electrical instrument);
• electric drive (for these purposes the most ordinary battery from computer UPS) is suitable;
• screws;
• wires;
• switch;
• board;
• sandpaper;
• glue;

Assembly and installation stages

After all the necessary tools will have in stock, you can start making the grinding unit. To begin with a wooden board, pre-treated with varnish, you need to attach the motor. It is easier to find it easier, many at home will certainly have an old non-working hard drive from the computer. After breaking it, removing the top cover and remove the head of the head, you will get the perfect workpiece - the motor. If you want your grinding machine to have a greater power, then it will be wiser to use a more powerful motor. For example, from the fan. And if you are plans to manufacture a serious stationary grinding machine, then in this case you need to take an electric motor from an unnecessary washing machine. Then, in addition to the grinding function, she can also act as a Bulgarian.

The next step will be the installation of the electric drive. In order for the motor to work, it is necessary to ensure it is uninterrupted power supply. If your grinding machine has a small motor, then the power supply to it should be performed in a special way. For example, through a battery.

After the main nodes of the homemakes are firmly fixed on the board, they will need to be connected to each other. You can make this operation using ordinary wires. Do not forget about the switch, be sure to introduce it into the general scheme.

If you install the felt nozzle on the grinding machine, then the polishing machine will be.

Now you need to make your own grinding wheel. To do this, take the sandpaper and cut down two circles of a suitable diameter. After that, glue them with each other. You got the finished grinding wheel, made with your own hands. Of course, you can buy a ready-made circle in any specialized store. In them, by the way, the circles of small sizes are also sold.

Next, proceed to fasten the circle to the motor using two simple sleeves. At the time of the attachment, focus on the diameter of the axis of the motor, since there is a chance of a diameter mismatch. In this case, you can simply choose plastic bushings on the diameter of the axis.

Collect this device decided to simplify sweeping legs of radio components and other surfaces that need prepare for spawn.

Here is the actual part that came across me to this idea:

You can get it from the Soviet cassette tape recorder.

Glit to Ne. small-grained emery:

Working part Grinders are ready, proceed by K. creation of drive. We need any engine with a shaft diameter of 1.5 mm, it is perfect for the nozzle.

And the button is this type:

Filling the mounting buttons for subsequent fixing on the engine:

And solder to the electric motor in any place convenient for you:

One of the conclusions of the button is also soldered to the case.

We reject one leg of the motor and closing the solder on the body:

Now you need to deal with meals. I used a 7 volt network adapter:

We start connecting the adapter of the Motor. One adapter contact is soldered to the free leg of the switch, the other - to the free leg of the electric motor:

That's all! The machine is perfect for stripping spike places and other small work. By the same principle you can do little drillusing a collet cartridge. If the drill is already available, then you can leave the nozzle on your native shaft and just clamp it into the cartridge.