Electric saw. Drawing, description

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Electric saw. home workshop

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Not so long ago, I discovered in my home workshop an old MK-12-V micromotor, apparently preserved from my childhood. What to do with him? It's a pity to throw it away, and now I decided to use it at least somehow.

Actually, from the micromotor, I left only the cylinder with the body. Flange, eye, slider and roller machined in the salon "Do it yourself". The rest was done in a vice with a file and a hacksaw. I used needles from a needle bearing as axles and pins. The handle was made of textolite, the switch was placed in a convenient place. The electric motor used PL-062 with a power of 150 watts.

The design of the electric cutter is as follows: an eccentric sleeve is put on the motor shaft and locked with a pin. The hole for the pin is drilled as an assembly. The flange with the glass attached to it, the housing and the cylinder of the micromotor is bolted to the motor flange. The axis of the eccentric is connected to the slider using a homemade lever. The whole structure is attached to the racks with screws. Racks to lighten the weight are made of duralumin. So that the hacksaw blade does not go back during operation, a pressure roller is provided. When the motor shaft rotates, the bronze slider reciprocates with the saw. The cutting burr goes into the groove on the ski. The electric motor is switched on through a transformer and a diode bridge.

Electric hacksaw (click to enlarge): 1 - micromotor housing MK-12-V, 2 - glass, 3 - screw M2, 5x10, 4 - eccentric bushing, 5 - pin, 6 - bolt M6x16, 7 - flange, 8 - electric motor PL -062, 9 - cover, 10 - eccentric axis, 11 - lever, 12 - axis, 13 - slider, 14 - hacksaw blade, 15 - ski, 16 - M6x30 screw, 17 - rack, 18 - M6 nut, 19 - screw M4x15, 20 - M4x15 screw, 21 - ring, 22 - bushing, 23 - axle, 24 - eye, 25 - axle, 26 - washer Ø 3 mm, 27 - pressure roller, 28 - M5x14 screw, 29 - M4x10 screw, 30 - rack, 31 - M5x10 screw

Author: L.Saevich

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