Device for drilling or boring openings

A method for improving accuracy of a device when drilling or boring holes, the method comprising the steps of:

• setting a cutter plate to a dimension smaller than a hole diameter to be drilled;
• setting a cutter to the dimension using an adjustment plug;
• setting operation of the device to an automatic mode from a computer numeric control (CNC) output system;
• feeding the cutter head axially, first by means of the cutter plate, drilling to the smaller dimensions, and then be means of the cutter, boring to the dimension of the hole diameter;
• upon diverging of a hole axis from a specified axis, sending sensor signals to the CNC output system;
• said CNC output system processing the signals taking into account the readings of a work piece rotation angle sensor and a rotation angle sensor, and sends signals, via a converter and control signal transmission circuit, to a linear drive of the device for moving the cutter;
• the linear drive and a pusher rotating the insert about an axis, moving the cutter by an amount predetermined by the CNC output system;
• the cutter creating a hole in the front of guides of the cutter head with the axis shifted in the direction needed to eliminate the runoff;
• and
• the cutter head entering the hole continuing to make the hold according to newly set parameters.