Universal micro-machine. Drawing, description

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Universal micro-machine. home workshop

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The machine is attractive for its versatility. It must be equipped with protective devices. Above the slot in the table, you need to install a height-adjustable pressure roller. Then, when planing, the boards will stop bouncing and breaking out of your hands: the quality will be better, and your fingers will be safer. Of course, we must not forget about the protective fence of the saw blade. And further. Since the chuck does not move, it is obviously necessary to feed the parts during drilling manually. It is also useful to mechanize this process.

A convenient small-sized machine (Fig. 1) for wood processing was developed and manufactured in the design circle of the Chernihiv region by young technicians Sergey Bogomaz, Valentin Mogilny and Igor Okhrimenko.

The machine is simple and can be built in any technical circle. The parallelepiped-frame is welded from a corner of 30x30 mm. The shaft of the working bodies rotates in radial ball bearings, the housings of which are screwed to the upper corner of the bed.

Above the shaft is a working table. There are two slots in it: in the middle, along the shaft - for the knives of the planer drum; across - for the saw blade. An adjustable guide bar-corner is bolted along the second. The table can be tilted to one side, like a chest lid - to access the drum.

Universal micro-machine
Rice. 1. General view of the machine

Rice. 2. Machine device (click to enlarge): 1 - station, 2 - working shaft, 3 - table, 4 - electric motor, 5 - guide bar, 6 - switch

Rice. 3. Working shaft (click to enlarge): 1 - cam chuck, 2 - saw blade, 3 - seat, 4 - drum body, 5 - drive pulley, 6 - planer knife, 7 - chipbreaker plate, 8 - locknut, 9 - bolt

The working bodies are driven by a single-phase electric motor installed inside the bed on the cradles. The rotational moment from the engine to the shaft pulley is transmitted by a V-belt. The pulley is mounted on a key and secured with a nut. The start of the machine is by a magnetic starter with a push-button switch located on one of the ends of the frame.

The shaft itself is a multifunctional organ. In its central part there is a thickening - a planing drum, in the body of which two grooves are milled: knives are inserted into them for processing boards up to 300 mm wide. Each knife is clamped by a chipbreaker plate with two bolts and locknuts (Fig. 2).

At the opposite end of the shaft from the pulley, replaceable organs are attached: saw blade - to cut bars up to 40 mm thick; small cutter - take quarters from the boards; abrasive wheel - sharpen tools and clean metal or wood for painting; felt disc - to polish the surface. Finally, you can screw on the chuck for drills and reamers. The entire set of tools is installed and removed quickly and easily.

Author: I. Evdokimenko

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