Method for removing a blind rivet in a workpiece arrangement

A cutting tool for removing a blind rivet in a workpiece arrangement, comprising:

• the workpiece arrangement having a first surface and an opposite second surface and a hole, which connects the first surface to the second surface;
• a blind rivet fixed in the hole, the blind rivet having a shell and a screw extending through the shell;
• the shell and the screw arranged therein extending coaxially along a common center axis between a first end on a same side as the first surface and a second end on a same side as the second surface of the workpiece arrangement;
• the shell having a shell head portion with a diameter which is greater than a diameter of the hole in the workpiece arrangement, an adjoining straight portion, an outside diameter of which is less than or equal to the diameter of the hole, a deformation portion, and a threaded portion having an internal thread, wherein the straight portion is in the hole and the deformation portion and the threaded portion protrude from the hole on the same side as the second surface;
• the screw having a screw head portion with a diameter which is greater than the diameter of the hole, and a stem portion, a diameter of which is less than or equal to an inside diameter of the shell, wherein, when viewed along the center axis, at least part of the stem portion has an external thread;
• wherein the screw is arranged in the shell such that the internal thread of the shell engages in an external thread of the screw and the deformation portion of the shell is deformed, wherein the outside diameter of the deformed deformation portion is greater than the diameter of the hole;
• and
• the cutting tool having a supporting body with an abutment surface and a bore starting from the abutment surface and with a guide slot extending radially outward from the bore, wherein a blade with a straight cutting edge is in the guide slot and movable in a guided manner such that the cutting edge extends parallel to the central axis of the bore and can be moved into the bore and toward the central axis;
• wherein a shape of the bore is matched to an outer shape of the threaded portion and of the deformation portion.

A cutting tool for removing a blind rivet in a workpiece arrangement, comprising:

• the workpiece arrangement having a first surface and an opposite second surface and a hole, which connects the first surface to the second surface;
• a blind rivet fixed in the hole, the blind rivet having a shell and a screw extending through the shell;
• the shell and the screw arranged therein extending coaxially along a common center axis between a first end on a same side as the first surface and a second end on a same side as the second surface of the workpiece arrangement;
• the shell having a shell head portion with a diameter which is greater than a diameter of the hole in the workpiece arrangement, an adjoining straight portion, an outside diameter of which is less than or equal to the diameter of the hole, a deformation portion and, finally, a threaded portion having an internal thread, wherein the straight portion is in the hole and the deformation portion and the threaded portion protrude from the hole on the same side as the second surface;
• the screw having a screw head portion with a diameter which is greater than the diameter of the hole, and a stem portion, a diameter of which is less than or equal to an inside diameter of the shell, wherein, when viewed along the center axis, at least part of the stem portion has an external thread;
• wherein the screw is arranged in the shell such that the internal thread of the shell engages in an external thread of the screw and the deformation portion of the shell is deformed, wherein the outside diameter of the deformed deformation portion is greater than the diameter of the hole;
• and
• the cutting tool having a supporting body with an abutment surface and an opening starting from the abutment surface and having a central axis perpendicular to the abutment surface, wherein two blades with opposite cutting edges are in the opening and movable in a guided manner such that the cutting edges extend perpendicularly to the central axis and can be moved toward the central axis in the radial direction from opposite sides;
• wherein a shape of the bore is matched to an outer shape of the threaded portion and of the deformation portion.