Method for deburring the edges of intersecting boreholes, and tool for implementing the method

Abstract

A deburring tool with a deburring blade () for deburring borehole edges () that have a straight or un-round shape, consisting of a base body () which is rotatably driven about its longitudinal axis (), and at the lower end of which at least one blade holder () with at least one deburring blade () secured therein is mounted on a blade bearing () on the side of the base body so as to swivel vertically, and on the outer periphery of the blade holder () a control groove () which is open radially outward is arranged, into which the freely flexible end () of a flexible spring () engages, the other end of said spring being clamped to the base body (), wherein during the deburring process, the deburring blade () is swiveled away from the base body () at an angle () in relation to the longitudinal axis of the base body (), and the blade axis () of the deburring blade () rests, spring-loaded, with its at least one cutting edge () against the borehole edge () to be deburred, and executes spring-loaded swiveling movements that follow the contour of the borehole edge () as the deburring tool is rotated, wherein the blade axis () of the deburring blade (), in the home position in which it is swiveled away from the base body, forms an angled swivel position () that deviates from the 90-degree position, and in that a backstop is assigned to the deburring blade (), which prevents it from swiveling back into the position in which it is swiveled at a 90-degree angle from the base body ().