How to glue the grinding tape for the grinder
MiniGrinder.Grinding machine Excellway power supply 9-24V.A small modification.We glue the tape.
Good afternoon dear Muscovites. Today’s review is about a belt sander and its power supply unit.ResSet (Huge congratulations to him on the birth of his son) has already outpaced me with a review of this product, so I will try to complement his review.Namely to make a small modification of the machine and make the grinding belt with their own hands. Features: Name: Belt grinder Material: Metal (mainly aluminum alloy) Power: DC 9.24V No-load motor RPM: 4500-9000 rpm(9-24V) Noise level: 75-85db Tape size: 330 x 10 mm Machine size: 175 x 110 x 140 mm.
At the moment in the store are available options with 20mm tape and power supply in the kit.A month ago, when ordering was available only with 10mm ribbon and without power supply (ordered separately). The order was sent to me in two packages (machine and power supply separately) and reached me in three weeks. If the power supply (came a week before the machine) was received in a bag and intact original packaging, the box with the machine has undergone a number of mechanical effects in which a consequence became ugly. Fortunately the machine (delivered assembled) was not damaged. Power supply: Chinese plug (changed for European). The power cord is 90 cm long, the second is 100 cm. Minimum and maximum voltages of the power supply: In general, the power supply is not bad. it corresponds to the declared characteristics. Included with the machine is a set of Allen keys and 10 grinding belts with different grits (60/80/120/150/180/240/320/400/600/800). In the photo 9 tapes. the tenth is already pre-installed on the machine in China. On the left side of the machine there is a power button and 5.5 mm socket for power connection. The table of the machine can be adjusted (to change the angle, to place closer or farther from the grind).ribbon). There is a spring under the upper strut.The stroke of the stand is limited by the groove for fast and easy belt changes. All rollers have cheap 686Z bearings.One good thing. they are closed type and are not afraid of getting dust and small chips inside. The top roller is barrel-shaped, and on the rack is a screw to adjust the position of the belt. Overall, the machine, despite its “toy” size is not bad and easily copes with its tasks. It was ordered to help its “older” brother, the grinder with a 0 power motor.55 kW (write in the Комментарии и мнения владельцев if you want a review on it). The thing is that with all its power it is not convenient to process small details, it is difficult to hold it (“tears” out of hands) and there is a big chance to be injured.The “little” brother copes with this perfectly.For example from a small part with a diameter of about 15 mm cast in resin, even with an 800 strip, the machine removes all flaking in less than a minute. Part Two. Finishing up the machine. The machine out of the box is quite ready to work, but I decided to make a few changes to the design.For starters. took the machine apart. And immediately found out that on the thrust plate, even after a short work there were traces of skin. What would save the thrust plate and reduce friction, it was decided to add in this place a wear-resistant element.On the older brother this element is a piece of ceramic tile, which does not fit us because of its great thickness.An acquaintance suggested using Resopal HPL laminate for this purpose. The Resopal laminate is a high pressure laminate that consists of several layers of base and decorative paper, which after impregnation with resin is pressed under high temperature and high pressure between the steel molding plates. The structure of the sheet can vary almost without limitation and can be adapted to the respective requirements. The main quality that suits us is high scratch resistance, high hardness and wear resistance.I cut out a small piece of plastic and glued it to the pad.Taking into account the thickness of the plastic (0.85mm), from milling in depth to this size part to which the stop plate is attached. I also lowered the table a bit. by drilling a hole and threading the post lower than the factory one. Thus I increased the size of the working plane of the stop plate.I also enlarged the countersink for table fastening screws, so they would not stick out like before. Taking into consideration that it is difficult to find new tapes of such size, and also taking into account that the size of rollers allow to install a wider tape, I decided to glue the tape by myself. I cut the strip with 12 mm width and 335 mm length from the burr. I made oblique angles on both edges of the tape, taking into account the extra 5 mm of the cut tape.Clamped the ends of the tape in a homemade device for easy gluing. For backing I decided to use a small piece of satin ribbon. Degreased sandpaper and tape and glued them with carpenter’s glue PVA.Put it in the press and leave it there until it dries completely. The result: On the machine: Just be aware that the processing of plastic generates a lot of fine dust, which can get into the motor and other components of the machine. To prevent this I decided to use a vacuum cleaner when working on the machine. And not a simple one, but a flexible corrugated hose and light at its end( write in the Комментарии и мнения владельцев if you want a review on it). Future plans to change the vertical rack to be able to use a longer belt. If after my review you decide to purchase this machine, the coupon “a7fb73“Courtesy of ResSet is still valid and gives you a 20% discount on the set (machine, keys and 10 tapes) Good luck to all.
Item provided for writing review by the store. This review is published in accordance with clause.18 of the Rules of the site.
Types and Sizes of Grinder Belts
First we need to understand what the Grinder is and what it is used for. Grinder is a machine for grinding various materials, the choice of which depends directly on the belt used in grinding.
As a rule, industries use special grinding machines for processing materials, but the disadvantage of such equipment is its high cost and often quite expensive maintenance, which in turn leads to the impossibility of using this kind of machines in small and home workshops. As a rule, for the processing of various materials in home workshops small homemade machines. grinders are used. Each master makes these belt-grinders by himself and for personal needs, focusing on his own needs in processing materials, so such mechanisms differ from each other by various indicators. the speed of work, the length and width of the belt, the size of the machine and its purpose. This situation makes it difficult to select the size of the grinder tapes if the machine is self-made. Of course there are grinders of industrial production, which are used in enterprises and in private households.
The most important question when choosing a belt for the grinder: what is the difference between them? Belts differ from each other in size, grindability and color. The most common sizes of belts for grinder: 50 x 610 mm, 50 x 1250 mm, 50 x 1500 mm, 50 x 1830 mm, 50 x 915 mm.
These are the standard dimensions for grinder belts and are the most commonly used, but there are also belts in widths of 60, 75, 100, 150 and 200 mm with lengths up to 8000 mm. These belts are often used in the manufacturing industry.
Sanding belts for machine tools
Endless sanding belts are narrow and wide endless belts made of paper, fabric or polyester. Klingspor endless belts are available in a wide range of sizes, grit sizes for most types of workmanship and materials. Grinding with abrasive belts is economically viable for many industrial applications.
Many sanding belts are available for sale and vary in price and quality. The most well known manufacturers will be used as examples.
If we consider the budget niche, we should focus on the products of BAZ Belgorod abrasive plant. Their products are quite cheap compared to other manufacturers. They also have belts with ceramics. They are quite “aggressive” and designed for processing hardened steels. But the products of this manufacturer wear out rather quickly and start to heat up. Metal dust coking on the belt starts to tear the grooves on the workpiece. This happens to all belts regardless of manufacturer, but it is much faster with BAZ products.
Higher quality abrasives are produced by VSM and 3M. They have different series of abrasives for grinder, which are designed for complete processing of the workpiece, from rough roughing to polishing. VSM products are good value for money. Products from 3M are of high quality, resistant to wear and tear, and high price. Products from 3M are better than VSM tapes, but their price by 30 percent more.
Below is a set that can handle any steel. For example, to process a blade and finish it.
On the internet many people advise to begin processing using abrasive grain P24. This is the coarsest grit and is designed for roughing the workpiece. But it is better to start processing with the finer grit P40 or P36. Logically, a coarse grit should process the material faster, but in practice a coarse grit works faster, and a belt with this grit shrinks faster than a belt with P40 grit. P40 grit works more accurately, after processing there are fewer deep grooves on the workpiece, which are then difficult to remove.
For example take the products from the company VSM with grit P40 series XK880Y or from the company 3M series Cubitron 2. This is a series with ceramic for roughing the material. After that, you need a P80 grit belt. Abrasive P80 remove the risks that are left from the grain P40. Next, choose the abrasive grain P120. On sale are belts with P60 and P100 grit. But in order to save money, we skip them. It is not necessary to use all grains in order.
DIY/ как склеить шлифовальную ленту на шлифмашинку / how to glue sanding tape on a grinder
At this stage you do not need the ceramics any more. For finishing you need other abrasives.
As suggested by experienced experts, if you are done with ceramic grain P120, you should also switch to a softer abrasive with 120 grit, but in order to save money, you can start with P180 grit.
The next series is kk712x of VSM. The grit material is corundum compact grit, it is also called compound. This abrasive removes well the risks from the past grit, and does not leave behind a large risk. With other abrasives is a problem, when the grain R160 leave after a risk on the workpiece, which then hard to remove. Happens most likely due to the fact that the belt coking, with this abrasive such problems do not exist. The only disadvantage of compounds is that they quickly become unusable.
After compound P180 the next band is of the same series, but with grain P220. In principle, you can end here, the blade will already have a marketable look, but you can improve. For example, someone needs to polish. Choose sk772t series and P320 grit. This is also a compound, but a finishing compound. It has a higher surface finish. After P320 we pass to abrasive P400 and further to P800.
If you want to get a mirror, then you should use dialux pastes.
Above was presented a set for processing normal and hardened steels, but you should understand that this set is not suitable for all cases. You need to know that there is a different abrasive for each material.
It is also important to understand that the shorter it is in length, the faster it wears out.
Paper joining options
IMPORTANT: All joints are diagonal. Ribbons tear easily across the direction, but are resistant to stress along.
The easiest way to connect the sandpaper. to glue it overlap.
- Clean up the areas you are gluing;
- degrease with solvent or white spirit;
- Fix the paper on a wooden platform (or board);
- lubricate with glue;
- Put the parts to each other, fix in the position in which the connection should occur and clamp through the board to the wooden platform;
- Leave it on for 10 to 12 hours. Some advise to warm the place of gluing after gluing and still press for 4-5 hours.
The advantage of this method is its simplicity. The disadvantage is that the seam is quite rough. This will affect the “run-out” of the machine.
NOTE: it is imperative that the tape be worn with the outside seam in the direction of travel! A seam with the opposite direction of movement can snag on the object being grinded and cause serious injury!
How to glue the tape for the grinder with your own hands?
Grinder is a belt sander that is used to work on a variety of materials. In large-scale manufacturing usually use specialized grinders, but such equipment has a high cost and expensive maintenance, so in small shops or at home they can not be used. Grinder belt is a strip with an abrasive coating on a paper or fabric base, connected in the form of a ring, so it has another name. endless.
What are the ways to glue the tape, their pros and cons
So we measured the width and length of a narrow strip of sandpaper and cut it off.
Now you can glue the tape on. There are two ways to do this:
butt to butt, fit the two ends together with high precision, put a strong cloth under the bottom and glue to it. It’s very smooth and beautiful. However, the joint, no matter how inconspicuous it may be, still exists. And it is there that the risk of belt rupture is enormous. And a belt that is cracked during operation. Is a greater risk of injury.
Overlapping. option is more complicated. It requires preparatory work, removing grains of abrasive to overlap the ends. But it’s very, very strong. do not tear. But there is also a problem. A glued seam is felt when sanding, it beats the surface, partially reducing the quality of work.
Types of nozzles for different grinders
Grinders (SchM) are used for processing almost any material: wood, plastic, metal, stone, concrete, paint, glass, etc.д. Accordingly, grinding machine bits may also have different shapes, be made of special materials and be designed for specific tasks. There are the following types of sander bits for different sander types.
For straight grinders, which are mainly used for deburring and sanding parts in hard-to-reach places, grinding wheels are used.
If you need to perform more precise work, a set of different burrs is provided for a straight grinder.
This type of CMM has a flat rectangular base plate on which the sanding sheets are clamped with special clamps. Sandpaper for sanders of vibrating type has holes designed to remove fine dust. They coincide with the grooves on the machine’s soleplate.
The deltoid grinder soleplate may resemble the working canvas of an iron or have a triangular shape. Accordingly, and the shape of the tooling will have a similar form.
It’s not hard to guess that the main tool on this type of CMM is a nylon brush, which is used for brushing wood.
It is also possible to fit lamella sanding sheets to the brush aggregates.
The “orbital machine” is the unit with the best surface finish. The eccentric grinding wheels are fitted with a circular sandpaper corresponding to the shape of the machine’s soleplate.
This unit is used for polishing paintwork, e.g., car bodywork after painting.
For finishing coatings use felt tips on the grinder, as well as foam.
On the belt grinders are installed an abrasive paper, glued in the form of a ring. On both sides of the machine bed are two shafts, one of which is a tensioning roller. On these rollers and put on equipment, which is an endless abrasive belt.
Makeshift Grinder. making a belt-grinding machine with their own hands
Grinder. belt-grinding machine type, used for dry grinding products made of metal, various alloys, wood, artificial stone, plastic and other materials.
The question of how to make a belt Grinder with their own hands, many home masters are asked, because with the help of such equipment you can perform various technological operations with products made of different materials. The belt grinder can deburr, remove surface defects, deburr rust, remove burr, eliminate the effects of plasma and laser cutting, and grind weld seams.