Tape grinder with your own hands - a drawing of a belt grinder
Grinder is a belt-grinding machine, used for dry grinding of products, made of metal, various alloys, wood, of an artificial stone, plastic and other materials.
Homemade grinder assembly
The question of that, how to make a ribbon grinder with your own hands, many homemakers are asked, after all, with the help of such equipment you can perform various technological operations with products, made of different materials. With the help of a tape grinder and you can remove burrs, eliminate surface defects, clean up rust, remove the bummer, eliminate the effects of plasma, laser cutting, smooth out welds.
Self-manufacturing grinder a
It would seem, which is much easier to buy branded equipment and use it in your workshop for many years, than to make it with your own hands. However, not everyone can afford to pay for a serial machine from a well-known manufacturer a decent amount. Especially since you make such a machine yourself, which will have the necessary functionality, quite simple.
The main details of the body of the machine with dimensions (press, to increase)
To become the owner of a homemade tape grinder a, it is necessary to sketch drawings in advance, and stock up on a drill, Bulgarian and electric jigsaw. Some parts for the belt grinder will need to be ordered from a turner, but there are no problems with this nowadays. It is better to immediately focus on making grinders, which will work in the vertical and horizontal planes: such equipment differs in high functionality and allows to process details at the necessary angle. As a basis it is possible to take the scheme of the firm machine and from it already to make the self-made equipment.
If you need a simpler grinder, made of improvised materials, then this option can be found in the video below:
Manufacturing process
Thick sheet metal must be used to make the power parts of the machine 10 mm. To draw the contours of such parts for further cutting, you can focus on the drawings. There is no need to follow the exact dimensions, as only dimensions of details will depend on them, which you are going to process on a belt grinder. You can draw the contours of the details on a sheet of metal with a marker, and to cut them use a Bulgarian and an electric jigsaw. It is much easier to cut such parts with a plasma cutter, but not everyone at home has such equipment.
Basis, machine body parts and engine before assembly
To make the base of your homemade grinder a more reliable, it is better to use for its manufacture a sheet of metal thick 12 mm Screw connections can be used to assemble the grinder base, but then you have to drill a lot of holes, which will significantly weaken the whole structure. It will be much easier and more reliable to assemble the base of your machine by electric welding.
Semicircular grooves on the details of the belt grinder will require a lot of time, providing rotation of the platform, on which the videos are placed. To make such grooves yourself, it will be necessary to tinker with the drill, cones and file, as well as use a drill. You can make your task much easier, if you entrust such grooves to a qualified miller.
Layout of a plastic machine: thanks to the rotary node, the grinder can be in a vertical position…
It is best to use titanium or duralumin to make the rollers of your homemade mini-machine (D16). If it is not possible to find ingots from these materials, then you can use steel, but then the rollers should be made as easy as possible, choosing metal from their inner part. You need the help of a qualified turner to make the rollers of a homemade machine, just take care of it, to prepare drawings for him.
The largest roller tape grinder a, which will be fixed on the motor shaft, in any case it will need to be made of steel, since a titanium billet of this diameter is very difficult to find, and duralumin may not withstand significant loads. For all self-made machine you need to make 4 roller, the size of which (diameter) make up: drive roller - 150 mm, tension - 100 mm, two small - 70 mm. If you are going to make a mini-machine, then the diameters of the rollers may be smaller.
… And horizontally
When you assemble your homemade machine with ready-made rollers, very important, so that they are located strictly on one line. Otherwise, you will be constantly faced with jumping tape. The width of the rollers depends on it, what size sanding belt are you going to use on your equipment. When you make drawings for making rollers, then be sure to consider, that they must be barrel-shaped, this will ensure a secure hold of the sanding belt on them during operation. In order to give the rollers such a shape, a small bevel is made from each of their edges: 1-2 mm.
The finished rollers of your homemade tape grinder should have a smooth surface, it is necessary to tell the turner about it, who will make them. Bearings, on which they will rotate, should only be of the closed type, otherwise they will be quickly killed by dust, formed during the operation of the grinding machine. To make your homemade equipment work long and smoothly, it is necessary to choose bearings for it, which have a class not lower than 6th. The rollers of the grinder rotate at high frequency, therefore bearings for them should be of very high quality.
Finished grinder in a horizontal position with an additional table
Working tape
In the belt grinder and you can always see the spring, which is necessary for that, to provide automatic tension of the emery tape. If you use such a spring, then change the tape will be very convenient, and its tension will be adjusted automatically. It is necessary to tell at once, that you will need to change the tape several times even when processing one product. Processing of any metal part must begin with a tape with a larger abrasive, gradually changing it to a smaller one.
Very important attention should be paid to gluing the tape. There are options for proper bonding on the Internet, you can also watch this process on video. To make it, you need to use fabric-based sandpaper. The seam on the tape is made only butt and it must be strengthened, for which a strip of dense fabric is used, is enclosed on the reverse side of the glued area. For gluing of a tape emery it is necessary to use only elastic glue, and it must be of very high quality.
Для якісного і надійного склеювання стрічки для стрічкового наждаку вам знадобиться її правильна підготовка. You can glue the tape with an adhesive stick for heat guns: this method can be clearly seen in the video above. An ordinary technical hair dryer can be used for heating.
If desired, you can make your homemade grinder even more versatile, for this purpose it should be equipped with an additional table, placed on the side of the largest pulley. This will allow you to process the parts on a belt grinder, pressing them to the emery tape on the side of the largest pulley. If you decide to make such a table, it will be necessary to provide for the possibility of changing the direction of movement of the tape emery, which should always move towards the desktop, and not from him.
The simpler design of the grinder can be found in the video below:
Choosing a drive for a homemade machine
It is very important to choose the right electric motor to equip your grinding and grinding equipment. Even if you are assembling a mini-machine, then the engine for it must have a power of 1.2-1.5 kW. It is desirable to choose an engine, which operates from the mains 220 V, because when using a three-phase device and connecting it through a capacitor, you lose 30 percent of its rated power. To make your grinder and grinder efficient, it is necessary to pick up for it the electric motor with a considerable quantity of turns. According to the drawing of the self-made tape grinder and it is visible, that the electric motor for it is necessary to choose with console type of fastening, provide its fixation in the front of the case.
If you spend the time and effort to do so, to assemble such a mini-machine, then you can work on it as in the horizontal, and in the vertical plane. Similar design features of the self-made tape grinder and allow to use it for performance of set of operations with details, made of metal and other materials. exept this, you will have at your disposal a very convenient grinder, which can be used for the production and sharpening of any cutting tools.
Even if you spend a few months making a tape grinder, then your work and time will be fully recouped by using such a convenient, reliable and functional equipment.
