DEEP DRILLING APPARATUS Russian patent published in 2001 - IPC

FIELD: manufacture of equipment for heat and nuclear power plants. SUBSTANCE: apparatus may be mounted in radial driller or similar machine tool. Apparatus includes holder for fastening tool mounted in spindle of machine tool with possibility of rotation and axial motion; oil header for supplying cutting fluid to working zone in the form of two hollow cylinders concentrically arranged one inside another with possibility of their mutual axial motion; cuttings chute and two brackets. Outer cylinder of cuttings chute is rigidly secured to drill chuck of machine tool coaxially with spindle. Inner cylinder of cuttings chute has outer end with bottom. Detachable guiding sleeve for tool is mounted on bottom along axis of cuttings chute with possibility of pressing to worked blank. Unit for pressing guiding sleeve to worked blank is in the form of power cylinder mounted in such a way that its axis is parallel relative to axis of cuttings chute. Body and end of rod of power hydraulic cylinder are joined with brackets. One bracket is secured to outer cylinder of cuttings chute and other bracket is secured to inner cylinder of cuttings chute. Lengthwise slot is provided in lateral wall of each cylinder of cuttings chute for passing union supplying cutting fluid to oil header. EFFECT: simplified design and maintenance of apparatus. 1 dwg