If you have an unnecessary washing machine that could not be sold, it can be used profitably. From the engine of the washing machine, you can make a home-made grinding machine. This device is called a grinder.
It has advantages over grinders - it allows you to conveniently process the ends of the products, as well as small parts. Learn how to assemble a machine with your own hands in our article.
SAMSUNG
When is the machine used
Grinder is used for the final processing of parts from roughness - before painting or varnishing. Also for aligning defects and flaws on surfaces.
The machine will allow you to quickly and efficiently cope with the work. In addition, tapes of various grain sizes go to it, so the scope of application is quite wide. Depending on the choice of tape, you can process products from:
- a tree;
- become;
- non-ferrous metal.
Using a homemade engine from a washing machine, it will be convenient to grind parts of various shapes, which you won’t do with a hand tool. For example, triangular, trumpet, flat and round objects.
Preparatory work
It will be necessary to make a movable element with your own hands, along which the tape will move. If you buy it separately for the assembly of the structure, then it will cost about the same amount as the new machine.
What details are needed to work:
- corners: one 40 cm long and two 15 and 25 cm long;
- 2 long bolts and a few ordinary ones, nuts, washers, spring;
- hairpin;
- a piece of metal measuring 30x100 mm.
What tools will be needed:
- lathe;
- drill;
- welding machine;
- pliers;
- open-end wrenches;
- Bulgarian.
It also requires parts that can only be made on the machine or ordered in the workshop. It:
- roller;
- bearing;
- sleeve;
- nut;
- shaft.
How to assemble a grinder from the motor of a washing machine: instructions
Now take the prepared corners. Connect the corners using welding, as seen in the photo below. Weld two small metal plates with bolt holes in parallel to the bottom.
To adjust the belt tension on the machine will help a bolt with a spring on it, installed in the end hole of the structure from the corners. Make a hole at the top of the corner for a short bolt. Screw the short part of the corner to this place, which is not fully bolted. The short part should move, allowing you to change the tension of the tape.
Then install the roller with the bearing mechanism. Do not over tighten the roller on the corner; it should rotate freely. Fix one end of the roller with a nut, and weld the other to the corner with a welding machine.
Establish a hairpin. To do this, make an additional hole in the corner under the roller. After threading the pin, secure it with two nuts on one side. When installing the stud, make sure that it engages in the thread.
As you can see in the photo above, another element is present in the design. This is a corner with a piece of chipboard, which is fixed with short bolts. He is needed for your safety. The belt is tensioned with a stud, so your hands will be close to the fast-moving belt. This strap protects your hands from damage.
How to connect a motor
It remains to connect the electric motor. It is advisable to use an asynchronous engine from a washing machine. Power can be from 200 to 300 watts, and the speed of revolutions from 1500 to 3000 per minute. Therefore, the performance of the tape will depend on the characteristics of the motor.
It is good if the engine has a sufficiently long shaft. But if this is not so, then you need to increase it yourself. Here you will need a special sleeve made of wood, made on the machine. The sleeve is put on the motor shaft, after which the tape is put on it.
So that the tape does not move during operation, but is located in the middle, you need to make the central part of the sleeve 2-3 mm larger.
Tape installation
You can buy a special tape or make it from an emery cloth. Its width should be no more than 200 mm. Cut the canvas into strips of appropriate length. Now the bands need to be connected. Use only special glue. Then proceed as follows:
- Laying the pieces in the joint, glue them.
- Lay a piece of cloth on top and hold it firmly.
- Then cover with a sheet of paper and secure with a hot iron.
- Trim the excess material around the edges.
Since the tape will have a strong effect, you need to perform the connection with high quality.
When putting the tape on the grinder, make sure that the seam that overlaps does not bulge during operation.
How to adjust the grinding machine
Adjustment of the tape occurs with a pin, which is installed in the design of a homemade machine. By twisting and unscrewing the hairpin, you influence the degree of pressure (tension) of the tape.
Here you need to be careful: if you work at high speed with a little tension, the processing may be of poor quality, with missing areas. If you slow down and pull the tape harder, you can ruin the product.
Also select the degree of grit of the abrasive according to the processing material.
Having understood the details of the work, you will get useful equipment for home use.