boma home master it's nice, doing your favorite job, to feel the presence of everything necessary tool. Brand copies collected in a collection with his own hands, his wealth and his pride. He takes care of it, carefully selects it and dreams of replenishment in the form of a gift or homemade machine.
Jet DDS-225 - 2 sanding drums for coarse and fine sanding in one pass
Woodcarving or garden building, cooperage or making homemade musical instruments- needed for everything quality tool. Including for its decoration. Drum grinding machine- the crown of the entire set of tool economy.
After him, there will simply be nothing to collect if he is from the Jet Plus family. A good workshop, created by many years of efforts, is the real pride of its owner.
Machine tools
The drum type grinder belongs to the group of surface grinding equipment. It is intended for finishing all kinds of wooden and wood-containing materials with abrasive sandpaper of various grain sizes. The technological process of cutting takes place on high speeds and with a large release of abrasive dust and dust from the cut off part of the workpiece.
The use of powerful ventilation systems allows you to work on such drum equipment in a relatively comfortable conditions. Structurally, such woodworking equipment is:
- mechanisms of portal or console type;
- on console-type drum machines, it is possible to manufacture parts with their turn, which increases the processing width;
- the portal design of drum machines increases its rigidity, allowing you to work with maximum performance without reducing accuracy;
- with single (Jet models 10-20 Plus) or double (Jet models DDS-237) sanding drums;
- stepless adjustment of cutting depth;
- fixed or mobile class bottom frame (Jet 10-20 Plus series);
- drive table for feeding the workpiece;
- with adjustable or stationary feed rate;
- ventilation pipes for connecting suction cyclones to each processing unit;
- working engine from 1.3 kW (Jet 10-20 Plus series) to 11 kW (Jet DDS-237 series);
Grinding process wooden materials consists in the implementation of the following technological methods:
- selection sanding belt appropriate grit according to the required cleanliness of processing;
- for maximum removal or peeling - 36 units;
- for the standard process - 80 units;
- finishing or final processing - up to 220 units;
- winding selected emery tape on the cutting shaft;
- winding of a tape of various grain size on the equipment with paired cutting drums is possible;
- setting the dimensions of the workpiece (from 0.8 to 75 mm for 10-20 Plus) and the amount of removal per pass;
- selection of the required feed rate of the table with the workpiece (from 0 to 3 m/min), as in the series 10-20;
The use of abrasive skins of various grain sizes, on twin shafts, makes it possible to obtain the best quality indicators in one pass. Especially when processing wood with your own hands.
Work principles
The drum grinding machine is quite simple both when performing technological operations and in its maintenance. The order of work on it is as follows:
- set the required cutting parameters;
- fill the emery cloth with your own hands on the cutting drums equipped with its tensioners;
- calibrate the cutting part;
- such an operation is necessary for accurate alignment of the working drum relative to the feed table;
- perform this process with the help of 2 calibrated wooden bars located along the width of the feed table under different sides of the drum;
- having achieved a symmetrical touch of the main shaft of 2 bars, proceed directly to the very technological process part manufacturing.
After several passes, in order to maintain productivity and surface quality, it is very useful to carry out preventive cleaning of the abrasive belt with a special pencil with your own hands. All similar machines, including models 10-20, are equipped with this pencil. It can also be purchased separately.
Homemade drum grinder
Such a drum machine for wood has a specific, very applied purpose. It is not universal and its rather rare use in ordinary households does not contribute to the growth of popularity. The relatively high cost, dimensions and complexity in pre-setting make such a technique a poor stepdaughter among "grinders", drills and vibrating machines.
Sometimes it makes sense to make a similar desktop grinding machine with your own hands, based on the light Jet series of drum equipment. The design of such a home-made, drum mechanism is not complicated:
- the bed and the body of the main, cutting part are made of multilayer plywood or good tree thickness from 10 to 20 mm;
- well suited for these purposes and the engine from the old washing machine, disassembled with their own hands;
- the pulley remains in place;
- it will be quite difficult to make a working drum, although it will be homemade, the functions will remain the same;
- the grinding drum of a home-made machine is made of a plastic thick-walled pipe of a suitable diameter (like the Jet model 10-20 Plus);
- the main axis of the cutting unit is made from a calibrated metal bar (up to 20 mm);
- do-it-yourself wooden plugs are adjusted under plastic pipe and central axis
- a home-made bearing assembly will have to be ordered by specialists;
- by assembling the drum assembly and fixing its parts together 10 fasteners, pasted over with a rubber sleeve;
- you can start assembling a homemade machine;
- a serving, hand-made table, from the serving side, is mounted on piano hinges;
- an adjustable stop screw is installed on the output side of the grinding machine;
- installation of ballasts will be the final touch of this woodworking composition;
This is how a self-made, do-it-yourself, wood grinding machine of the type discussed in the article will look like. Although, to be honest, it is still dangerous to deal with such homemade products.
Everyone who has been involved construction work, repair, restoration of old doors, windows, window sills, etc., certainly faced the need to working surface was flat, smooth and gliding. Previously, we picked up sandpaper, if the surface was large, then we strengthened the sandpaper on a wooden trowel and, stocking up on great patience, began the monotonous and monotonous work - grinding. Now, to help professionals and amateurs, a lot of devices have been created, the so-called grinding machines and machines. Using them for certain grinding operations, we make the process easier for ourselves. manual labor, shifting some of the simple functions to the machine. Today we will talk about grinding machines that are used to process wooden products.
Purpose, classification and scope of grinding machines
Grinding machines are used to reduce the surface roughness of workpieces, as well as to obtain accurate dimensions. Usually grinding is The final stage processing of pre-prepared parts.
When working on grinding machines, grinding materials and tools are used.
Grinding materials - special powders, pastes, abrasive skins.
Grinding tools include - cutting, polishing and grinding, circles, bars and segments.
Depending on the purpose, the machines are divided into several types:
Circular grinding;
Internal grinding;
surface grinding;
Specialized grinding machines.
The classification of machine tools is based on the following features:
Type of surface to be ground (internal or external, cylindrical or flat);
Type of parts that this machine can process (cylinders, shafts, rollers, rails, etc.);
Design features of machines (centerless, planetary, two-column);
Features of elements of workpieces (splines, threads, profiles, etc.).
The area in which grinding machines are used is very wide. Recent advances in machine tool building, as well as the production of parts by casting, stamping, rolling, turning and carpentry, make it possible to use grinding machines instead of turning and milling machines (horizontal boring machines). Now grinding machines can perform the following operations:
Cutting and peeling blanks;
Precise processing of various planes, wheel teeth, rotational surfaces, etc.;
Tool sharpening.
Drum grinder: purpose and main elements
Drum grinder It belongs in appearance to surface grinding, in class - to calibration. The main tool of the machine is a grinding wheel, which is made in the form of a cylinder (drum). Usually such a machine is used for woodworking. With it, it is very convenient to grind and calibrate boards, slats and other flat and long wooden parts, such as panel surfaces made of chipboard, MDF, solid wood, veneer, etc.
The main elements of the drum type grinder are:
The bed on which all components and parts of the machine are fixed;
Motor that provides rotation of the grinding and feed drums;
Mechanism for changing the frequency of rotation of the feed drum
Desktop;
feed drum;
Protective cover;
Device for dust removal;
The mechanism for changing the height of the grinding drum.
How the drum grinder works can be seen in the video.
Some models of drum-type grinding machines on the Russian market
Today on Russian market grinding equipment in the drum grinding machines section, products of various manufacturers are presented. The leading place here is occupied by products under the JET trademark. The American company JET, part of the Swiss holding WMH Tool Group AG, today presents the following industrial and domestic drum grinders:
JET 10-20 Plus. Price: 25000 rub.
The drum sander with a full capacity of 500 mm (250 mm x 2) is well suited for a small workshop where free space is highly valued.
JET 16-23 Plus. Price: 37000 rub.
Universal grinding machine with great potential and possibilities: musical instrument making, furniture making, kitchen sets, shop and bar equipment, a wide range of carpentry operations.
Double drum sander JET DDS-225. Price: 160,000 rubles.
Very powerful machine, suitable for operation in production conditions.
The Russian Tool Company Enkor, an official dealer of leading foreign manufacturers of tools, equipment, machine tools, etc., offers the Corvette 57 drum grinding machine manufactured in China. The machine is designed to perform preliminary grinding of flat wooden blanks and bring products to a given size, processing varnished and primed surfaces.
Corvette 57 - drum grinder price: 24100 rub.
The German company Elmos Werkzeuge, a manufacturer of power tools, woodworking equipment, garden equipment, presents its Elmos DS 163 drum type grinder. Price: 16400 rubles. Designed for use in production as an alternative to manual grinders.
Summarizing this summary grinding machines that are offered for purchase on the territory of the Russian Federation, it can be said with confidence that there is a certain choice. You can find machines for use in large-scale production, in small businesses and for use in personal households. As they say: "Any whim for your money."
However, not everyone today is ready to pay a tidy sum for a grinding machine. And the habit left from the time of the Union to do everything from improvised materials and with your own hands, makes modern Kulibins move their convolutions, rustle in the bottom of the barrel and "the eyes are afraid, but the hands do" - to produce a lot of useful and necessary things. Moreover, technologically they are not much inferior to their production counterparts, but in price they are several times cheaper. Below we will see how to assemble homemade drum grinding machine.
DIY drum sander
What it is useful for, we examined above, as well as what it should consist of. Therefore, we take a list of the main elements and begin to look for and collect them. And then let's talk about how to make a drum grinder at home
Engine
Let's start with the engine. The easiest way is to take it from an old washing machine. If it is, then half the work is done. From there you can take the entire electrical part, pulleys and belt.
Making a grinding drum
Now about the drum. It can be made from various materials and sometimes, it would seem, completely unnecessary remnants of repair and construction activities. For example, from wooden rings cut and glued together, or four cylindrical bars fixed on a metal axis with epoxy glue, or from a paper pipe onto which a linoleum roll is wound.
Here we will consider in more detail the manufacture of a drum from a piece of PVC pipe. For manufacturing, we need: a steel rod 16-20 mm, a piece PVC pipes diameter 100 mm, wooden plank, screws, rubber, glue. Perhaps everything. The steel rod will be the axis of the drum. We cut off a piece of the required size from the pipe. In length, it is slightly smaller than the rod. We cut out two end caps from wood according to the diameter of the internal section of our PVC pipe. We drill a hole in them for the rod. Plugs are inserted into the pipe and secured with screws. The screw heads must be recessed. We pass our rod through the holes of the plugs and fasten them with epoxy glue. We glue thick rubber on top of the PVC pipe. It will serve as a substrate for the skin and provide it with a better fit to the part. The drum is ready. You can strengthen sandpaper with staples for a stapler or double-sided tape. It is better to glue the tape in a spiral, this will avoid shocks when sanding.
Case and desktop
Wood or 15mm aviation plywood is suitable for the machine body. You can also make a table out of them. We make the case simply and unpretentiously: two side panels, a spacer panel in the middle and a desktop consisting of a base firmly attached to the case and a movable part. The working table must be strong and must not bend when pressing the workpiece against the drum. On the feed side, it can be reinforced with an additional cross member, which will also create a support surface for the adjusting screw.
In order to ensure the adjustment of the stroke of the working table relative to the drum, on one side we fasten its movable part to the base with two hinges or a piano hinge, and on the feed side, through the middle spacer, we screw in the adjusting screw. It is important to know what the thread pitch of the screw is, then it will be possible to set required thickness detail processing.
Installation
We mount the engine in the lower part of the case. We derive its axis through a hole previously made in the body. In the upper part of the body we install a grinding drum. The axis of the drum rests on two bearings in cages, which are bolted to the side walls. We make the holes for the clips a little larger in diameter. So it will be easier for us to align the drum. We fasten the pulleys on the axis of the engine and the drum and pull the drive belt. We mount the wires and the switch. We screw in the adjusting bolts from the bottom and the clamping bolts on the sides, which will support the desktop at the desired height.
The final touch - the case can be treated with varnish or paint, of course, before installation. Now our homemade drum sander is ready for use. For more convenience in work, you can add to it protective cover above the drum. Connect the nozzle from the vacuum cleaner to the casing. This will remove the dust generated during operation.
In conclusion. In this article, we tried to consider issues related to drum-type grinding machines. And you make a choice to work on the device purchased in the store or make it with my own hands.
Every do-it-yourselfer who works with wood to some extent probably has a separate tool dedicated to sanding, whether on grinder or by hand, but sometimes it happens that the workpiece is round or needs to be sanded inside. In this article I will tell you how the author made grinding drums with his own hands, with the help of which Finishing work will not be a burden.
To make this homemade we need materials such as:
* Wooden planks, their thickness may vary, for an average drum it is 15-20mm.
*Steel rod or ready-made bolt.
* Washers and nuts.
*Sandpaper.
* Joiner's and PVA glue.
* Crowns or so-called annular drills.
* Rubber bands for banknotes.
First step. In order to get started, we need to determine the dimensions of the drum, after the dimensions are selected, we select the crown for the same size. With a crown installed in a drilling machine, we drill 5 round blanks, you can change this amount depending on the desired height and the thickness of the blanks themselves.
Second step. Armed with PVA glue, glue the adjacent surfaces of the finished round blanks and clamp them to each other with a vise, observe the gluing accuracy so that one bar does not go beyond the edges of the other. At this stage, the strength properties of PVA glue will be enough.
Wait for it to dry completely, then fasten the bolt in the middle into the drilled hole and tighten it on both sides with nuts, having previously thrown a washer on both sides.
Third step. This stage requires a grinder or sandpaper, with the first method it will be easier and faster. We clamp the bolt with the finished drum into the cordless drill and grind it with coarse sandpaper, gradually moving to a finer grit, thereby giving smooth surface our drum.
Fourth step. The final assembly stage includes cleaning the drums from the dust that was formed in the previous stage, as well as covering the surface with wood glue for gluing the grinding element. With ordinary scissors, cut out a piece of sandpaper pre-marked to size and glue it butt-to-butt on the adhesive surface of the drum, and so that it does not protrude during the drying of the glue, secure it for a while with rubber bands for banknotes.
After that. as the glue dries completely, you can use the homemade product for its intended purpose, try the drums in action.
Thank you all and good luck in inventions and devices with your own hands.
The vast majority of grinding operations in everyday life are carried out manually or using a drill. This is understandable. Buying expensive specialized equipment for use at home, where grinding operations tend to vary greatly in appearance, is not always advisable.
There are various devices for manual and mechanized grinding. All of them can be divided into two main types.
- Tools that directly process the part itself are hand-held devices, which include grinding blocks (blocks, bars) and grinding attachments for a drill or grinder, which are all kinds of support plates and drums.
- Devices that provide the necessary position of the grinding tool relative to the part - guides, support surfaces, etc.
Dust removal devices can be attributed to a separate type, which, due to the abundance and harmfulness of grinding dust, should also not be neglected.
Hand sanders
When working manually, a variety of grinding devices are used to ensure the necessary processing parameters.To the simplest handheld devices include sanding pads, which can be called: sanding blocks, sanding bars, etc. Depending on their shape, they can process both flat and shaped surfaces.
The sanding block consists of three main elements - a body with a working surface on which the sandpaper is stretched, a clamping mechanism that fixes the sandpaper on the block, and a handle to which force is applied during grinding. The latter may be absent as an independent element, in which case its role is played by the body. The clamping mechanism can also be replaced by other elements that perform its function, for example, or Velcro.
Many types of branded pads are produced, differing from each other in the form and method of fastening. sandpaper. The housing is most often made of plastic, the working surface of which is covered with soft material to smooth out irregularities.
The simplest sanding pads are easy to make yourself. Wood is the best for this. It is advisable to paste over the working surface or upholster it with a soft material, such as felt.
Most simple design a bar is two pieces of a board or chipboard, fastened together with screws - in such a way that the skin fits the lower piece, and its ends are clamped between the parts.
With a little more effort, you can make a more functional bar in which the skin will be clamped with a wing nut, which is much faster and more convenient than using screws for this.
For processing large surfaces, if for some reason a power tool is not suitable, it is best to make yourself a grinding "planer". His possible design shown in the figure below. It is so simple that it needs no explanation. The dimensions of the device are determined by the specific working conditions - the parameters of the processed plane and the physical data of the worker.
Grinding "planer"
For grinding edges that are at a strict 90° angle to the adjacent surface, a tool will be useful to ensure the required right angle. It is shown schematically, the specific implementation can be any.
Device for grinding edges (end view): 1 - base, 2 - handle, 3 - side stop, 4 - stiffener, 5 - sandpaper, 6 - felt strip.
One of the main tasks in the manufacture of homemade bars is the reliable attachment of the skin to them. In addition to mechanical clamps (using screws, nuts, etc.), other methods of attaching sandpaper can be used in homemade sanding bars.
You can just nail it on the ends with small nails. The method is easy to implement, but inconvenient if you have to change the skin often.
An acceptable way to secure sandpaper is by gluing it. Adhesives are suitable for this, making it relatively easy to separate the skin from the base when replacing it.
Sometimes the skins are fastened with wedges. Cuts are made in the bar, into which the edges of the skin are tucked and wooden wedges are driven. Cuts and wedges can be of various sizes.
Devices for drills and grinders
Manual grinding requires a lot of effort and time. With significant amounts of grinding work, it is advisable to use a power tool - a drill or a grinder, in particular. To turn the latter into a grinding tool, they must be equipped with a suitable grinding attachment - a backing plate or a drum.
Sanding pads. These nozzles are a disk of plastic or rubber, to which an emery cloth is attached in the form of a circle. Plastic plates have a soft or not very soft layer between the base and the Velcro, for a better fit of the skin to the surface to be treated. The plates for the drill have a shank in the form of a rod, for angle grinders - a thread for screwing them onto the output shaft of the angle grinder. The grinding attachment for the angle grinder can be converted into a drill attachment by screwing an adapter with a shank into it.
But due to the rigidity of the nozzle for the grinder, strictly vertical arrangement drill relative to the plane when grinding is practically impossible. When using a rigid cymbal (flexible is easier to work with), any slight tilt will cause the rim of the cymbal to bite into the workpiece and the drill will try to get out of hand, resulting in more angulation and deeper digging into the edge of the circle. This results in well-marked depressions on the machined surface. Therefore, only grinding attachments that can compensate for the tilt of the drill are suitable for the drill: either rubber, or with a thick soft layer between the plastic base and Velcro, or with a movable pin mount.
Rigid cymbals are only suitable for working with a fixed drill, such as shown below.
If you can’t find a suitable nozzle for a grinding drill on sale, and there is a hard nozzle, then you can make a thick soft layer between the plastic base and Velcro with your own hands.
Velcro is carefully cut off with a clerical (construction) knife, and a large round sponge for washing the body is glued as a soft layer. When the sponge is compressed during the grinding process, the symmetry may be broken (the Velcro with the skin is shifted in one direction), but at the speed of the drill (3000 rpm) this is not critical, it will probably not work with the grinder.
Combined nozzles for grinding on a drill are produced, in which the shank can be in two positions relative to the working surface - to be rigidly locked with it or to have a degree of freedom (unlocked). In the latter case, the working surface of the tool has the ability to adapt to the inclination of the drill, so that the processing is obtained without the formation of recesses. But the price of such devices is close to the price of orbital sanders.
To make the shank movable, the flare nut is twisted (in the photo below with a similar device, it is twisted to the cartridge).
The skin is attached to the plates with Velcro. This method of fastening requires a special sandpaper, on which a Velcro backing layer is applied.
Sanding drums. Grinding drums for a drill are a cylinder with a shank, sanding paper is fixed on the cylinder in the form of an endless tape (an emery tape glued with ends) or a strip of sandpaper with free ends. In contrast to the support plate, in which the working surface is located perpendicular to the axis of rotation, for drums it is located parallel to it.
In order for the skin to sit tightly on the drums, the latter have various tension mechanisms. According to the principle of operation, there are two of them - increasing the outer diameter of the drum (used for an endless belt) and tensioning the abrasive belt using a special mechanism (used for open belts). The increase in the diameter of the drums is realized different ways- pumping them up (for pneumatic models), axial compression (for drums with rubber elements). The tension of an open tape can also be performed in different ways. This is most often done with a rotating screw that tightens the ends of the sandpaper. Below are several options for drums with different types of skin tension.
The drum for endless belt sanding can be made by placing rubber spacers between wooden discs. When tightening the axle bolt, the rubber is crushed, expanding in the radial direction and securely fixing sanding paper put on the drum.
Grinding fixtures using a drill. Grinding parts with a plate or drum, holding a drill in your hands, is not as easy as it might seem to someone who has never done it himself. In many cases, a better surface can be achieved by holding the tool stationary. Particularly when machining small parts that are easy to handle by hand. There are grinding devices that allow you to fix the power tool, making it completely or partially stationary.
You can use branded drill guides, which are mainly designed for drilling, but can also be successfully used for grinding - mainly with a drum. There are two ways to work with them. By fixing the drill in the guide motionless and moving the workpiece relative to the tool (photo A below), or moving the guides together with the drill relative to the workpiece, pressing the supporting surface of the guides against the latter (photo B below). In both cases, the tilt of the drum is eliminated, which ensures that the surface is processed at the desired angle.
You can independently make the simplest two-board grinding device, which allows you to ensure that the angle of the grinding edge with respect to the main surface is exactly 90 °.
Dust removal. When sanding wood, a lot of dust is generated, which not only creates inconvenience, but also harms health when inhaled. Dust needs to be dealt with. The easiest way to do this is to suck it out with a vacuum cleaner, placing the hose close to the grinding area.
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Grinding various wooden parts- the need that everyone who wants to make repairs in their home, or create some kind of decor element with their own hands, faces.
Of course, you can sand small parts with ordinary sandpaper, but to cope with a large amount of work, you should change the sanding to a grinding machine. It will help to significantly save time and quickly bring the part to the appropriate form. One of these useful gadgets is also a drum grinder.
Classification and structure
Drum-type grinding devices belong to the calibration class machines. Such a grinder is most often used for woodworking, but other materials can also be processed with it.
Cylindrical grinding wheel (drum) allows you to calibrate boards and rails of various lengths and configurations. The workpiece can also be made from different materials: chipboard, veneer, etc.
The structure of the grinder:
- Cylindrical grinding drum.
- Feeder.
- Dust extractor.
- Working surface.
- Drum speed converter.
- The motor that drives the grinding cylinder.
- A bed for fastening the key components of the machine.
- Drum height adjuster.
- Operator protection device.
Here are the main elements of the structure drum machine. Depending on the specific model device and the specifics of its purpose, the configuration may vary slightly.
Main device models
Drum-type machines can be purchased ready-to-use. There are several of the most popular and widespread brands for the production of these devices. It makes sense to present their individual models.
JET company. The American company specializes in the production of modern machine tools of the most various types, including drums. In the line of its products there are several grinding machines with a cylindrical shape of the working circle.
- JET DDS-225. This machine is one of the most powerful devices of this type in the manufacturer's line. It is used both in home workshops and in small industries. Characteristic– double grinding drum. The cost of this machine is appropriate - from 150,000 rubles.
- JET 10-20 PLUS. A compact sanding device that allows you to process up to 50 centimeters of surfaces. Perfect for small home workshops. The cost does not exceed 25 thousand rubles.
- JET 16-23 PLUS. It is considered one of the most versatile machines of its type. It is used for processing building materials, kitchen appliances and even musical instruments. Most often, such a machine is used in small furniture manufacturing enterprises.
Corvette 57. A Chinese-made machine, which is distinguished by a rather high build quality and wide functionality. The machine is designed for grinding flat surfaces wooden blanks and turning parts to the required dimensions. The machine has a fairly affordable price - 24 thousand rubles.
In addition to these machines, there are also good options from German manufacturers. It is worth noting that, depending on the price, German companies also offer appropriate sets of features for their devices. The minimum amount for which you can purchase a grinding machine in the basic configuration is 15-16 thousand rubles.
Video: step by step manufacturing drum grinding machine.
How to make a grinding machine with your own hands?
If it is not possible to shell out a fairly round sum for a decent version of a drum grinder, then you should try to make it on your own. For a person who is well versed in mechanics, this is not too difficult a task. In addition, this way you will be able to save significant financial resources.
In order to assemble a drum grinder at home, you need to acquire the following parts:
- Drum grinding. Cylindrical the device can be created on the basis of "garbage" building materials. For this purpose, they often use even pieces wooden bars, which are evenly attached to a special metal axis with glue. In this case, special attention should be paid to the tightness of these bars to each other. Also, the drum can be made on the basis of a PVC pipe with a diameter of up to 10 cm, which is put on an iron rod with a diameter of 1.5-2 cm. It should be slightly shorter in length than the rod itself. We insert special plugs with holes for the rod into the ends of the pipe. We recommend fixing the plugs with screws. We pass and fix the rod. We wind a dense layer of rubber onto the pipe, on which sandpaper will be attached.
- Engine. It is best to use a working motor from an old washing machine (as well as pulleys, belts, etc.). The optimal motor power should be between 200 and 300 watts. It is desirable that the motor also be asynchronous and single-phase. The rpm level is 2000-3000.
- Frame. By design, it should be simple and convenient. It is best that the body of the machine consists of two side panels, spacers and the actual table itself. Special attention should pay attention to the strength and rigidity of the desktop, which should not be deformed when the workpiece is pressed onto the drum. The desktop should consist of a base and a movable part.
After the main parts of the machine are assembled separately, you can proceed to final assembly the entire apparatus. First of all, you should attach the motor to the bottom of the machine body in place beforehand. drilled holes. The grinding drum is installed in the upper part of the housing and is attached to two bearings that are located on the side walls of the housing.
Then we attach special pulleys to the drum and motor and pull the drive belt. After all the necessary preparations with electrical wires, we fasten the desktop with special bolts that will keep it at the required level. Experts strongly recommend mounting a protective cover on the machine.
It is worth noting that the independent creation of a drum grinder is also not without certain costs. This is primarily about your time, but the machine will cost you less than the factory machine only if you have a working motor. Without an engine and certain skills to create cheap analogue branded machine is almost impossible.
