The operating principle is simple, on two guides slides (drawer type) put the basis for the drill.
The movement of these guides is achieved using a lever, retained by a spring. The movement of this lever rotates a gear (made by me, wood), which meshes with a rack attached to the drill holder.
In this case, since I have several powerful DC motors, I thought it would be interesting to put one of these motors and drill a mandrel and have everything fixed.
The mandrel and the motor shaft are connected by the latter connected to a screw which in turn grasps the mandrel. All this together by an aluminum tube that allows a good grip.
So far it works pretty well, the engine is quiet.
To power the motor use an external source of 16v-1A, but I think it falls a little short, ideally with 24 Vdc feed. I put a toggle switch to control the ON-OFF.
Thanks for the visit