Drill-baby. Drawing, description

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Drill-baby. home workshop

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In the household, a miniature electric drill can be of great help. It is easy to make it on the basis of the DAP-1 electric motor, designed for the EPU of electrophones and radiograms (see Fig.). The cartridge is made of steel round or hexagonal bar. A through hole Ø 1-2 mm is drilled in the center of it (depending on the diameter of the drill).

To fix the drill in the chuck, a side hole is drilled for the M2 screw. And in order to put the cartridge on the motor shaft, a hole Ø 10 mm is drilled to a depth of 3,9 mm, and then it is adjusted with a reamer to 4 mm. The motor shaft is lightly cleaned with fine sandpaper and the cartridge is tightly fitted.

To make it convenient to hold the drill in your hands, four wooden linings measuring 65x15x12 mm are made. On the engine housing they are pulled together with two M3 steel screws.

The design of the electric drill (click to enlarge): 1 - switch, 2 - bracket, 3 - DAP-1 electric motor, 4 - pad, 5 - chuck

The bracket for attaching the pushbutton switch is made from a strip of soft sheet aluminum or brass, 30 mm wide and 2 mm thick. The beveled part of the strip is bent at an angle of about 105° and then a hole is made in it for attaching a push-button switch.

Further, having drilled holes Ø 3,2 mm and placing wooden linings, the bracket is installed on the engine, and the remaining end is bent.

They put a cartridge, clamp the drill and turn on the drill. If the cartridge "beats" noticeably, it must be slightly corrected with a small hammer until the drill begins to rotate without noticeable beats.

Author: Yu.Pakhomov

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