System and method for positioning error compensation during manufacturing of complex-shaped gas turbine engine parts

摘要

A system and method for error compensation in positioning a complex-shaped gas turbine engine part during manufacturing thereof with a machine. Theoretical measurements for a plurality of control points on the part are first retrieved. Actual measurements for the control points are then acquired in a coordinate system of the machine. If an error between the actual and theoretical measurements is beyond a tolerance, a transformation matrix is computed. The transformation matrix represents a transformation to be applied to the coordinate system to adjust a pose thereof for compensating the error. The transformation matrix may be computed and applied to the coordinate system iteratively until the actual measurements are brought within tolerance. A machining program may then be generated for manufacturing the part accordingly.

主权项

1. A method for positioning error compensation during manufacturing of a complex-shaped gas turbine engine part with a machine, the method comprising:
retrieving theoretical measurements of a plurality of control points defined on the part; acquiring, in an initial coordinate system of the machine, actual measurements of the plurality of control points defined on the part; computing an error between the actual measurements of the part and the theoretical measurements of the part, the error indicative of a mis-positioning of the part in the initial coordinate system; when the error is beyond a predetermined tolerance, computing a transformation matrix representative of at least one transformation to be applied to the initial coordinate system for adjusting at least one of a position and an orientation of the initial coordinate system to compensate the error, and applying the transformation matrix to the initial coordinate system to obtain a transformed coordinate system; and generating a machining program for manufacturing the part based on the transformed coordinate system.