Grinding and sharpening is a very uninteresting, lengthy and painstaking task, unless of course you work on a belt grinder. This is perhaps the most convenient machine for such tasks. If you have a grinder, then you can make an attachment for it that allows you to turn it into a grinder.
- Extended nut М14;
- aluminum tube 25 mm;
- sheet steel 5-8 mm;
- corner 10×10 mm, 50×50 mm or more;
- bolts, nuts, washers M10;
- bearings with an inner diameter of 10 mm – 3 pcs .;
- tension spring.
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Grinder manufacturing process
The assembly of a homemade grinder should begin with the manufacture of a drive roller, which will be screwed onto the grinder’s spindle. To do this, you need to press an elongated M14 nut into the aluminum tube. The length of the tube is selected depending on the width of the tape with which it is planned to work.
The roller is screwed onto the grinder, and it starts. It is necessary to grind it with a sandpaper on a block or a file to remove the beating.
The reducer is temporarily removed from the grinder.
It is necessary to release its cover in order to accurately transfer the holes in it to the steel strip. The width of the latter is matched to the size of the cover. In length, it should slightly exceed the length of the grinder body.
The strip is drilled.
Then it is screwed together with the gearbox to the grinder. To do this, the standard screws must be replaced with long ones.
Having tried everything in place, you need to cut the strip as in the photo. Then a strip is welded from the wide side at a right angle to the workpiece, which will serve as the sole of the machine.
As a result, you should get a T-shaped piece.
A supporting platform for the tape is made from a wide corner. One of its shelves is almost completely cut off. From it you need to leave only 2 narrow flat surfaces required for attachment to the bed. On the second shelf, a cut is made from the corner with a width of 10 mm along the entire length. The metal is only left on the mountings.
To establish a support on the bed, it is required to mark the junction points. Then we drill the bed, and cut the threads in the holes, and make grooves on the corner strips. Thus, we get a regulated connection.
Next, you need to make a table for placing the workpieces processed on the grinder. For this, a steel plate of a convenient size is used. In it, from the edge in the transverse direction, a 10×10 mm corner piece is screwed.
A groove is made in the corner on the table for easy adjustment when fastening. Then we try on the part on the bed, and make a mark for fastening. We drill a rack along it, and weld a thread segment into the hole. Thus, the table and the support plate will not interfere with each other during adjustments. In this case, the table can be installed relative to the sanding belt at a right or other angle.
At the top, we weld the nut to the bed for attaching the driven roller. Next, we take a piece of a narrow strip with a length of 70-100 mm, and drill it from the edge. We insert a bolt into the hole, and tighten it with a nut. Then we collect bearings on it through washers. As a result, we get a video of the required width.
We drill a strip with a roller in the center to attach it to the welded nut on the bed. From the remaining free end, it is necessary to make a hole for the spring hook. Now we collect the parts with the grinder.
Next, we try on the existing spring, and install a screw on the bed to stretch it, thereby keeping the roller in tension. After that we put on the tape.
The machine is fixed on the table with a clamp, or you can drill the sole and screw it on. Since everything is made collapsible, if necessary, the grinder can always be removed when needed.
Watch the video
Do-it-yourself miniature and functional grinder attachment – https://sdelaysam-svoimirukami.ru/8149-miniatjurnaja-i-funkcionalnaja-shlifovalnaja-pristavka-k-bolgarke-svoimi-rukami.html