Chamfering tool for tube ends.

摘要

1. A tool for simultaneously bevelling the interior and exterior edges of tubes of varying diameters, of the type comprising a body (1) provided with a gripping tail (2) so that the tool can be joined to a rotating control head and a cylindrical section (3) along which a centering member (5) circulates, ending in an exterior cone (20) the cylindrical section of the body comprising at least one radial slit (3, 9) of which one face is situated in an axial plane which opens onto the centering cone (7) and in which is fixed at least one cutting blade (11, 12) of which the edge is liable to project out over the centering cone (7), the said centering member (5) being mounted in a mobile manner in relation to the body (1) according to a pre-adjusted course by adjusting means (27, 30) elastic means (22) being situated between the body and the centering member to constantly induce the centering member towards the exterior, characterised in that the tool comprises two interior and exterior bevelling blades (11, 12) of which the cutting edges (20, 21) are situated in the same axial plane as the rotating tool (10) and are arranged on either side of the axis of the tool, one of the cutting edges (20, 21) being substantially parallel to the generating lines of the centering cone (7) while the cutting edge of the other blade forms an angle with the generating lines of this cone, and in that the centering member (5) is in the form of an interior tubular slider (6) with a conical head (7) which is mobile in an axial tubular recess (4) of the said cylindrical section (3) of the body (1) of the tool, while being supported by detachable retaining means (23 to 26) and contains in its interior the said means (27, 30) for regulating the course of the centering member (5).