The working motor from the washing machine should not gather dust in the garage. Even a home master can find him a use. We will tell you how to make a homemade circular from the engine of the washing machine.
Such a tool will help to cut firewood, master carpentry. However, be careful: careless use of a home-made machine can lead to unpleasant consequences. Therefore, before you get to work, you must be completely confident in your abilities.
Which engine to choose to make a circular
The choice of engine to create a mini circular depends on its power. It is advisable to use an engine with a V-belt, which will transmit its speed to the saw blade of the machine.
For a 350 mm disc, you need 1 kW of energy to run. A disc with a diameter of 170 mm will require about 500 watts. Therefore, you can put the motor from the old washer.
It is important to adjust the number of engine revolutions, otherwise instability in operation will lead to the fact that the disk will tear the material.
In the washing machine, the tachometer, which controls the control module, controls the revolutions. But it is impossible to connect the module to the circular, so install a voltage regulator. Use the wiring diagram to install the motor correctly.
Circular with a do-it-yourself washing machine motor
You figured out which engine is needed and how to connect it. Now consider the design of the circulation saw.
For circulars made at home, the absence of a bearing assembly is allowed, which will greatly simplify the design.
The main load will be on the moving elements. It:
- saw shaft and electric motor;
- engine pulley and saw shaft;
- drive belt.
Consider the features of each of them:
- The drive belt does not have to be taken from the washing machine; other belts can be used. The main thing is that they have notches, like a wedge-shaped belt.
- On a small pulley, you need to make flowing furrows. The belt will cling to them during operation, which will avoid slipping.
- A larger disc is welded onto the large pulley, which prevents the belt from slipping off.
- To mount the circular saw, use the shaft where it is mounted, as well as the washer and nut, which are fixed. It is recommended to pick up or take this kit from the factory, so that the disk is mounted as securely as possible.
When creating a design, you need to consider that it is designed for a three hundredth disk. Of course, a do-it-yourself circular machine is suitable only for domestic use. Therefore, try not to overload the engine.
Electrical preparation
To start the saw, you can install a starting device. If thermal protection is provided for excess current, then when jammed, the switch will turn off automatically. A button from the door lock will do.
Often, such machines are stored in the yard, on the street, so protect the electrical part from moisture.
Frame and bed production
The bed is made of a metal sheet with a thickness of 3 mm. Before making the frame, prepare a 30 mm metal corner.
As shown in the photo above, the master installed the frame in homemade pipe racks. Now it is possible to adjust the height of the device. However, it is recommended that a solid frame be welded together. Strong vibration over time loosens the fastening of bolts and other elements.
When making circulars, consider the possibility of repairing them. All moving parts must be lubricated conveniently. Before starting work, it is advisable to prepare detailed drawings.
Note that the mini-circular saw is different in size. It is much smaller than usual and can fit during storage in the pantry.
How the device works
The engine starts, which drives the shaft with a pulley. As a result, the drive belt rotates, transmitting revolutions to the saw blade pulley. The saw begins to rotate, allowing you to cut the material.
A home-made circular machine will always come in handy in the household. Due to the fact that it can be made from improvised means, it will cost you almost for free.