ES265840U - Drilling tool, especially barrena. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Drilling tool, especially auger, with a head part presenting at least one cutting plate and a tool holder that can be fastened to the spindle of a machine tool, the head part being surrounded, in its rear extrusion, returned to the tool holder with a cylindrical adjustment pin, by an annular surface running perpendicular to the axis of the drilling tool and presenting the tool holder, for receiving the adjustment pin, an adjustment bore, surrounded by an annular front surface also presented in the area of the adjustment bore a screw a radially threaded fastener acting by means of a conical appendage and a conical cavity, whose two axes are arranged offset from each other in the direction of the axis of the drilling tool on the adjusting pin and at least with an intermediate piece, possibly insertable between the head part and the tool holder, whose two ends are provided with connecting parts adapted to the connecting parts of the head part and of the tool holder, characterized in that the adjusting pin in the reach of the fastening screw has a transverse bore with a sliding link bolt inside it, which in its two ends has a conical appendage or a conical cavity and in that, coaxially the fastening screw, there is arranged, diametrically opposite, a second screw fastener screwed to the tool holder resting both fastening screws on opposite ends of the link pin with its conical cavities or with its conical appendices . (Machine-translation by Google Translate, not legally binding)