BORING FOR RADIO

When faced with the need to drill numerous fine holes in printed circuit boards for electronic devices, it was found that a power drill in this case is not such a good assistant she is loud, and the power of it excessive. Then decided to make a small tabletop drill press is more suitable for such work. The present machine has a small size, low power consumption and, importantly, virtually silent — you can work even when all the household slept. And drilling the holes with diameter from 1 to 6 mm permissible even in aluminum workpieces.

 

Structurally my table drill press, like most of his “brothers”, consists of a table-base, a rack, a console with a working body and arm. And is characterized in that its working body (jig and drill) is mounted on a “single shaft” with a drive motor (shaft motor inserted directly in a blind hole end of the working shaft of the machine and connected by the dowel). In addition, the motor has its own “personal” power supply.

 

Table base used duralumin plate size 320×220 mm and thickness 10 mm mounted on shock absorbers — rubber glides with a height of 25 mm. is mounted On a table stand made of steel rod with a diameter of 20 mm, and the rack wearing adjusting focus, the spring and the console. The stop is made of 16 mm steel sheet. Spring total height of 100 mm is wound with a pitch of 15 mm on the bar of high carbon wire (grade 70 steel). Console — welded detail: two bushings (running and working) are connected by a pipe section of rectangular cross section 40×26 mm To chassis bushing welded to the side of another boss thread on the end for mounting the lever arm.