ES178304U - Tool for executing circular cuts. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Tool to execute circular cuts that is specially designed to work in combination with a rotary drilling machine and being of preferential application for the realization of large diameter holes in plates of relatively reduced thickness, is characterized essentially because it is constituted by a substantially circular piece, provided with a central and prolonged passage through one of its faces in a perforated axial neck. Coincidentally, with its aforementioned central passage, whose piece can receive through it a conventional drill, which it holds by means of a radial prisoner, and presents on the side opposite the neck a central cylindrical recess in it, which can be lodged and be retained the end of a helical spring, which at its other end holds a perforated stop for the passage of the drill, being provided with a plurality of concentric tabiquillos that determine the formation of intermediate annular channels in which tapes can be selectively introduced of cylindrically curved saw, which are assembled without reaching the contact at their ends and which have two holes made in diametrically opposite points of their extension, one circular and the other colise, through which they can. Be fixed in the housing provided by means of two screws that are mounted radially in the piece, crossing all the walls of the same. (Machine-translation by Google Translate, not legally binding)