Grinder with your own hands: drawings with the dimensions of the components and the assembly algorithm
Grinder is a special grinding device that has an electric drive and an abrasive-coated belt. Such a device is used for finishing metal, wood, and polymer surfaces. The main thing you need to pay attention to when assembling the grinder with your own hands: drawings with dimensions, stages of work, selection of suitable materials.
Belt grinder with your own hands: the principle of operation
A distinctive feature of such a device is that it has a simple design that anyone can repeat at home. The composition of such a grinding unit includes an electric motor, rollers and directly a working tool – a tape with an abrasive coating. The strip may have different grain size. This indicator is selected in accordance with the purpose of the tool.
When assembling a grinder with your own hands at home, you should prepare and study the principle of its operation. When the unit is turned on, the engine starts. It has a shaft that connects to the main (leading) roller. The roller begins to rotate around its axis, acting through the abrasive belt on the secondary (driven) rollers.
Grinding is done quite simply when the machine is turned on. To do this, you need to attach the workpiece to a moving abrasive belt. During operation, it is necessary to focus on the position of the working strip.
A self-made grinding machine will allow processing workpieces from different materials. Such a unit has the ability to eliminate defects on the surface of metal, wood, and glass. Using grinders, rollers are often adjusted, which allows processing defects of different depths.
It is worth remembering that with prolonged use, the grinding strip wears out, which leads to its stretching. In such units, this problem is solved very simply. One of the rollers of the device contains a special mechanism that allows you to pull the tape. Most often, such a device is installed on a roller located between the main and secondary roller of the device.
Design features of the grinder with your own hands: photo
It is recommended to take into account all the nuances of the design of factory devices. This will make it possible to produce the most efficient grinding table machine. The standard equipment of this type of device includes a support table. In addition to the main purpose, this surface performs another auxiliary function: it is used to fix the workpiece being processed.
In factory devices, such a table can rotate relative to one axis. The angle of rotation is usually 90°. This makes it possible to grind two planes of the workpiece (located perpendicular) without changing the position of the part fixed on the rotary surface. When assembling a simple grinder with your own hands, you can make a static table. This will greatly simplify the assembly, but the finished unit will have less functionality.
There are other equally important details that are included in the design of such machines. Let’s consider what other structural elements must necessarily have any grinder used for grinding blanks from different materials:
- skating rinks;
- tension mechanism;
- protective wall.
All these details are quite easy to make with your own hands. The belt sander can produce dust or sparks during operation. It depends on the material of the part being processed on such a machine. Because of this, experienced craftsmen strongly recommend using special glasses. In addition, it is recommended to organize a protective wall, for the manufacture of which acrylic glass is used.
Portable units are equipped with a housing made of steel. The grinder stand must have holes that are necessary for fixing the device on a wooden surface (by means of bolts). When choosing a tape, it is worth considering that its length depends on the power of the unit (and vice versa). The higher this indicator, the more powerful the drive should be, respectively.
How to make a grinder with your own hands: assembly rules
Before starting the independent design of a grinding unit of this type, it is necessary to carefully study the sequence of actions, as well as take into account some rules. The first and most important stage is the preparation for the assembly of the grinder. Let’s consider what actions this item includes.
First of all, you should make a suitable drawing. It should be remembered that the scheme must meet specific operating conditions. The drawing can be made independently. The second option is to download the finished scheme from the Internet. On specialized websites and forums, you can find many modifications of such devices, the design of which is most suitable for home assembly.
The more detailed the drawing, the better. The diagram should contain a detailed description of all individual structural elements with their dimensions. A drawing with dimensions is a very important document on which the performance and technical characteristics of the future machine will depend. Therefore, it is worth approaching its compilation with all seriousness.
You can independently perform different versions of grinding grinders. In addition to stationary devices, there are also simpler types (for example, a grinder from a grinder with your own hands). A drawing and a video on the assembly of such a device can also be easily found on the World Wide Web.
The next point to consider is the preparation of all necessary parts and tools for assembly of the unit. To design a grinder at home, the following devices will be required:
- electric jigsaw;
Pay attention! When selecting tools, it is necessary to take into account that the grinder design provides for the use of metal parts, as well as their processing.
Many parts of this grinding equipment are difficult to make for a beginner. Therefore, it is recommended to study in detail the various structural elements and their features. It also does not hurt to get acquainted with the drawings and videos. It is much easier to make a grinder with your own hands if you have the opportunity to consult with a qualified master who will be able to give valuable recommendations on this issue.
Some structural elements cannot be created with their own hands without the use of turning equipment. You don’t have to do this kind of work yourself. To perform complex parts, you can use the services of a professional turner.
When making a grinder with your own hands, it is desirable to take into account another important point. The most effective devices are those that can be used to process not only horizontal, but also vertical surfaces. Experts recommend selecting a drawing that allows you to grind the workpieces at different angles.
Grinder with your own hands: drawings with dimensions of structural elements
The development of an appropriate scheme is the most important preparatory stage. The drawing can be ordered from a qualified master. In this case, it will be as accurate as possible and will allow you to manufacture equipment that will last for more than one year.
How to make a grinder with your own hands? Drawings, videos, as well as photos of grinders at various stages of assembly – all this makes it possible to independently perform a high-quality unit.
The second option is to download the scheme from the World Wide Web. In this case, it is worth knowing that some drawings located on the Internet are not effective. Therefore, before downloading a particular scheme, it is recommended to read the reviews of real people who have already used it to assemble belt-grinding equipment.
It is also recommended to compare the scheme drawn up independently with other drawings with the dimensions of the grinder with your own hands. Videos that have the appropriate subject matter allow you to quickly understand all the nuances of manufacturing such a unit. There are a lot of them on the Internet.
The scheme must be accurate and contain sketches of all structural elements of the structure. The dimensions of individual parts are mandatory. And, finally, you can put the finished scheme on a profile forum and ask about what inaccuracies it contains. It is possible that in this case it will be possible to get valuable advice on its refinement.
Homemade grinder machine with your own hands: choosing a suitable drive
Before starting the assembly of such a grinding unit, it is necessary to prepare a suitable engine. Most often, a drive with a power of at least 1 kW is used for these purposes. There are several factors that you should focus on when choosing an engine. Let’s look at them in more detail.
First of all, you need to understand that devices operating from a standard network are suitable for use at home. The voltage in such a network is traditionally 220 V. A higher voltage is necessary for the use of professional equipment, which is found in small enterprises, but not for a device made with your own hands. Grinder grinding machine must be created in accordance with a pre-prepared drawing.
Another important point is the number of revolutions of the drive. The accuracy of workpiece processing depends on this parameter. There is a certain pattern here. The higher the engine power, the more revolutions it will be able to produce.
The most suitable drive option includes special blades in its design. Their function is to neutralize overheating that occurs during engine operation. Such a device is easy to make yourself in a home workshop.
Most often, a simple motor from a washing machine is used to assemble such grinding equipment. The grinder with its own hands of this type fully meets all operational requirements and is used for processing small workpieces made of metal, wood, and plastic.
Features of making a grinder from a washing machine with your own hands
The engine power is selected depending on the size of other structural elements. First of all, this concerns the dimensions of the main (leading) pulley. If the size of this element is the standard 150 mm, then an engine with a power that will produce up to 3000 rpm is needed.
Of course, you can buy a ready-made engine, but it will take extra finances. The best option for assembling at home is to use an unnecessary engine from a washing machine. The grinder, which is based on such a device, is certainly not able to compare with the factory one, but it is quite suitable for simple everyday work.
The motor, dismantled from an old automatic washing machine, has a small power (below 300 watts). It has good reliability and is unpretentious in operation. The popularity of using just such a drive is due to its wide distribution.
Belt grinder: a simple device for grinding and sharpening
Advantages and disadvantages. Types of grinders. Design and principle of operation. Recommendations for the selection and use of a belt grinding unit.
The drive from the washing machine must be included in the preliminary drawing. A grinder with his own hands at home needs an engine with an output shaft. In this case, the shaft has a threaded connection, the design of which makes it easy to dock with the pulley.
Pay attention!For the assembly of grinding units, engines are suitable not only from old automatic machines, but also new-generation drives. When using devices of the second type, it is necessary to remember that they need a device that will regulate the number of revolutions. This is due to the fact that the maximum rotation speed of such drives can reach up to 18 thousand rpm.
The drives of the new generation have one significant disadvantage. With the active use of grinding equipment, quite rapid wear of the motor brushes occurs.
When designing a grinder with your own hands from an engine from a washing machine, you also need to take into account that such a drive is best suited for a small unit. Therefore, it is worth choosing the optimal dimensions of the leading and secondary rinks in advance.
Making grinder rollers with your own hands: drawings
Designing rollers for a grinding unit of this type is a serious stage that requires care and accuracy. One of the most important elements of the grinder is the main skating rink. It is necessary to remember that its dimensions should be larger than the dimensions of the remaining rollers.
It is no coincidence that the leading skating rink has similar geometric indicators. Such dimensions make it possible to avoid an undesirable jerk that occurs during the starting moment. It is also important to understand that in no case can materials that have a large mass be used for the manufacture of this structural element. Such materials include:
- cast iron.
Before you start creating the rollers, you need to prepare the appropriate drawings with dimensions. A belt grinder with your own hands should have light and comfortable rollers of small dimensions. As a rule, this is quite enough to carry out simple grinding work.
To reduce the weight of the driving roller, a steel part with a cavity can be constructed. There are special reference books that allow you to make the calculations necessary for this procedure.
The second option, which is most often used by home craftsmen, is the use of duralumin. This material is characterized by low weight and is ideal for this purpose. It contains impurities of copper and magnesium, which provide increased strength of the alloy. To assemble the grinder, it is customary to use duralumin grade D16 and higher.
How to make grinder rollers with your own hands? Experts recommend making a groove on the pulley located at the end. Its dimensions are selected taking into account the size of the abrasive belt that will be used in the machine. This measure is aimed at preventing the tape from flying off during the operation of the equipment. It is advisable to do the same manipulation with the remaining rollers.
The degree of roughness of the rollers is very important. The surface of the rollers may have different levels of roughness. When assembling the grinder, it is recommended to use rollers with this indicator ranging from 1.25 to 2.5. A table containing information on the degree of roughness of parts can be easily found on the Internet. The pulley for the grinder is mounted on the equipment with its own hands by means of bearing units.
In this case, closed-type bearings are used, which have a static outer ring and belong to the category of self-centering. The installation of such elements makes it possible to exclude the possibility of abrasive or any other foreign particles hitting the roller shaft.
When choosing bearings, it is necessary to take into account their bearing parameters. These indicators determine what kind of load the part can withstand. The higher the number of revolutions of the unit, the more reliable the bearings should be. During operation, it is not recommended to deviate from the drawings with dimensions. A belt grinder made in accordance with the scheme will be distinguished by higher efficiency, as well as a long service life.
How to fix the video in the device? The easiest way at home to mount the roller is to use standard cotter pins. Another fastening option is the use of a collar (at one end of the axis).
Characteristics that the belt for the grinding unit must meet
The selection of an abrasive strip is an important stage during the assembly of a mini grinder with your own hands. First of all, you need to determine the length of the tape and its width. The geometric parameters of the strip are influenced by two main factors:
- grinder dimensions;
- purpose of the unit.
Endless abrasive strips are also divided into types by grain size. The length of the grinding strips can be different (from 610 to 1830 mm). Such tapes have a width of 50 or 100 mm. The first option is most often found in aggregates assembled with their own hands at home.
A high-quality abrasive strip must necessarily have an elastic fabric base. When choosing a suitable tool, it is also necessary to pay attention to how many revolutions the strip can withstand. It is recommended to purchase products that are capable of operating at 1500 rpm. This option is best suited for making a ribbon grinder with your own hands. The drawing drawn up earlier should contain information about the dimensions of the abrasive strip and its other characteristics.
A good tape must have high abrasion resistance. The resistance of the tape to wear depends on this indicator. For homemade devices, it is recommended to use tapes whose length is no more than 123 cm. The abrasive strip should not only be resistant to wear, but also have good resistance to high temperatures formed during friction against the workpiece during operation.
It is worth noting that tapes of small length are much more susceptible to wear than products of greater length. Experts advise you to pay attention to pictures of finished products. Photos of the devices allow you to answer the question of how to make a grinder with your own hands. The drawing of the device can be greatly simplified if ready-made elements purchased separately are used in its assembly.
And finally, special attention should be paid to the place of gluing the abrasive belt. The joint of the two ends of the strip should be as neat as possible, without any defects or protrusions.
How to glue the tape for the grinding unit yourself
Belt grinders contain a spring that performs a very important function: it pulls the belt that has sagged as a result of wear. The tape is changed several times even when processing a small workpiece. This should be remembered.
When assembling the grinder with your own hands from plywood or metal, you can make an abrasive strip yourself. Gluing such a tape is a complex event that does not tolerate mistakes. There are many tips on the Internet on how to properly glue the tape, but many of them are incorrect.
The gluing process looks like this. First you need to choose a fabric-based emery material. Then it is necessary to prepare both ends of the abrasive strip. To do this, they are cleaned. The seam on the strip is performed exclusively by the butt-to-butt method. Experts definitely recommend strengthening the glued tape from the inside by means of a dense strip of fabric, which is fixed with a special adhesive composition.
Pay attention! To glue the tape, in no case can you use the glue “Moment”.
In order to connect the ends of the abrasive strip, you need to purchase a special adhesive composition. The best option is the use of elastic glue. It is not worth saving at the same time, since cheap funds, as a rule, are not of good quality.
Before gluing, it is necessary to prepare a strip for tape emery. Grinder with his own hands (from improvised materials) needs a reliable abrasive strip, which is difficult to perform at home. The process is carried out using an adhesive stick, which is installed on thermal guns. First, the composition is heated. To do this, you can use a regular hairdryer, which is available in every home.
Homemade grinder: drawings with the dimensions of the turntable and assembly tips
At home, you can design both a simple version of the machine and a more functional device. In order to expand the operational accessory of the unit and ensure the convenience of operation, a pivoting support table is manufactured. This surface is installed on the side of the most voluminous pulley.
The advantages of using a turntable are obvious. First of all, this will allow you to fix the part in a certain position, which will simplify its processing. When assembling a rotary grinder with your own hands, it is worth considering the possibility of changing the direction of the abrasive strip. The emery must necessarily move in the direction where the work surface was deployed.
The table must be equipped with a movable locking element – bracket. In this part, the rotation function relative to the horizontal axis at fixed angles should be implemented.
Most often, for simple machines created at home, a duralumin table is used. A wooden version is also possible. The drawing of the machine is prepared in accordance with its design features. The thickness of the surface, for the manufacture of which duralumin is used, must be at least 15 mm. This is very important, as a thinner table may not be able to withstand workloads.
The function of the clamping plane in this case is carried out by the frame of the unit. To do this, it is necessary to prepare the frame. It is enough to simply perform the grinding of one of the surfaces of the frame – the one that is located at the slide table.
Grinder with your own hands at home from a drill: assembly features
Such a grinding device can be performed in a simpler way. Of course, the assembly of a stationary unit, which is intended for installation on a table, is the best option, allowing for grinding of various parts on a permanent basis. There are other, less complex options for creating a grinding device with your own hands.
If desired, you can make a grinder with your own hands from a grinder or from a drill. The drill is an electric tool, so it is necessary to observe safety rules when working with such a device.
The need for processing metal, as well as wooden blanks occurs quite often in everyday life. Buying a factory unit for small amounts of work is not the best solution. The easiest way to make a simple grinder is by using a drill.
Most often, such improvised materials as wood, plastic, plywood are used to assemble such a grinding nozzle. Before starting work, it is recommended to prepare a nozzle scheme, which will allow you to make a grinder with your own hands. Videos on this topic are also recommended by experts for viewing, as they cover all the nuances associated with the assembly.
It is worth saying that when working with small blanks made of plastic and wood, this grinding machine shows itself almost no worse than stationary equipment.
Another advantage of such a solution is that in modern models of drills there is a special controller. Its function is to adjust the speed of the drive. The constructive simplicity and high efficiency are reflected in the popularity of such a solution.
Grinder with your own hands at home: video and assembly instructions from the grinder
A stationary grinder for home use for its intended purpose resembles a device made of a drill. The devices, which are based on an angle grinder or, as it is also called, a grinder, have their own characteristics. The main distinguishing feature of the Bulgarians is that their drive has a high rotation speed.
Thus, for the manufacture of a grinder from a grinder, a device controlling the speed of the drive may be required. Often angle grinders are used as electronic files. For this purpose, there are special belt-grinding nozzles on sale, namely:
Such nozzles are quite popular among craftsmen. With their help, you can easily handle various hard-to-reach places (for example, holes). It is not difficult to make a grinder from a grinder with your own hands. To do this, you need to design an abrasive nozzle yourself, which is based on a tape of the required size. However, it is much easier to purchase a ready-made tool.
The main structural difference of the angle grinder from other equipment operating from the power grid is the location of the output shaft of the grinder. This element is deployed at right angles to the body. As a result, this design is very convenient and helps to ensure a simple fixation of the drive roller and the abrasive web.
Thus, such a nozzle is not difficult to perform with your own hands. The drawing of the grinder from the grinder can be found on one of the profile forums dedicated to this topic. A tool of this type is quite comfortable to use. The elongated body of the nozzle facilitates various kinds of grinding operations.
Making a simple grinder at home is not a difficult undertaking if you approach the matter competently. Of course, you can design more functional equipment with your own hands, but such work requires more time, materials and effort. The selection of a suitable drawing must be carried out, focusing on individual needs.