How to make a metal cutting machine with a washing machine motor?

Nowadays, even the most basic cutting machine for metal cannot be bought cheaply. Chinese distributors sell mediocre models with a service life of a couple of months for $30-40, let alone solid machines that would last a long time. But there is no problem that cannot be solved with skillful hands and ingenuity. There is a way to make a metal cutting machine with a washing machine motor. Allegedly, the costs of such a procedure will be minimal, but the result will please everyone without exception. Well, let's figure out how this is done.

First we connect the engine

There are several ways or, let’s say, diagrams for connecting the motor from a washing machine. The simplest method involves connecting directly to an outlet without including a capacitor and toggle switch in the circuit. Let's look at it in more detail.

In short, we need to determine which terminals on the electric motor are starting and which are working. By making the right connection combination, you can start the engine. The main thing is that the ends of the starting and working windings must be connected into one wire. For this you will need:

• plug;
• three wires with plugs.

Important! Most motors have 5-6 terminals for connection. They are numbered with corresponding numbers. Regardless of the specific number of pins, the connection mechanism is identical.

The pin numbering can be found on the motor housing. If there is none, you can determine the type of winding with a multimeter. The starting winding has more resistance, the working winding has less.

You need to take a power plug and connect to one end a separate wire with a plug connected to terminal number 2. Attach a split cable with two plugs to the other end. We need pins 1 and 4 to be connected into one wire, so we alternately connect the plugs from the bifurcated cable to them.

After this procedure, try inserting the plug into the socket. If everything was done correctly, the rotor will immediately begin to rotate. Congratulations, you were able to assemble the electric motor circuit.

Assembling the machine

So, now you can assemble the working engine with the rest of the parts into a single machine. How to do it?

• First you need to mount the motor on the workbench. To do this, take 2-4 metal corners and weld them on the sides of the engine.
• Weld a bolt to the shaft that will hold the equipment. First, several short welds were made, and only then the bolt itself was welded to reduce runout as much as possible.
• Now you need to install the disk on the shaft. Weld the pulley from the grinder extension, and screw on top a nut with a groove to match the diameter of the inner hole of the grinder disk. The main thing is that the diameter of the disc matches the fit.

The resulting machine can work with both grinding, cutting and polishing discs of an angle grinder, and with sharpening stones.

Cutting machines are quite dangerous, so it is better to think about a casing system that you can make yourself from a sheet of metal.

As a result, if you have the motor from the washing machine and all the necessary parts on hand, this machine will not cost you a penny. The electric motor of the washing machine, if you don’t have one at home, can be bought at a disassembly site for 3 hundred. The main thing is that the power of the found motor is not lower than 180 W, and the engine is working. Before assembly, check the serviceability of the “engine” with a multimeter.

   

Reader comments

• Share your opinion - leave a comment