Device and method for re-contouring a gas turbine blade

A system for recontouring a gas turbine blade, the system comprising:

• the gas turbine blade;
• and
• a blade recontouring device, the blade recontouring device comprising:
• a holding device comprising at least one cutting tool, the cutting tool comprising a cutting element and a plurality of supports, wherein the cutting tool extends in an axial direction at least over a length that corresponds to one half of a predetermined maximum profile thickness of the gas turbine blade and
• a guide configured to guide the cutting tool along a leading edge of the gas turbine blade on either a suction side or a pressure side of the gas turbine blade,
• wherein the plurality of supports comprises a first support appended axially to a bottom end of the cutting tool, and adjustably-positioned axially above a second support mechanically connected to a bottom surface of the first support, further wherein the first support is configured as having a first size and the second support is configured as having a second size such that less than a 45° angle is formed between an axis of rotation of the cutting tool and a chord of the gas turbine blade in a condition where the blade recontouring device is attached to the gas turbine blade,
• wherein the cutting tool is configured to remove material from the gas turbine blade using a rotational movement about the axis of rotation,
• wherein the axis of rotation forms the less than 45° angle together with the chord of the gas turbine blade in a profile section plane, which extends perpendicularly to a radial extent of the gas turbine blade, and
• wherein the second support is the same size as the first support.