System and method for geometric transformation of a dimensional inspection
AssigneePratt & Whitney Canada Corp.
InventorsMd Mizanur Rahman, Pengyou Wei
Life of this patent
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Abstract
Systems and methods for performing dimensional inspection of components are provided. The systems and methods correct errors associated with non-contact scanning of components based on surface quality. A method of inspecting a component includes using non-contact scanning of the component to acquire a point cloud indicative of a geometry of the component, acquiring a surface quality of the component, and selecting a geometric transformation associated with the surface quality of the component from a plurality of geometric transformations respectively associated with different surface qualities. The point cloud is transformed using a selected geometric transformation associated with the surface quality of the component.
Claims20
A method of performing a dimensional inspection, the method comprising:
- scanning a first component using optical scanning to acquire first scanned data indicative of a geometry of the first component;
- measuring the first component using a coordinate measuring machine (CMM) to acquire CMM data indicative of the geometry of the first component;
- determining a geometric transformation required to register the first scanned data with the CMM data;
- acquiring a surface quality of the first component;
- associating the geometric transformation with the surface quality of the first component;
- scanning a second component using the optical scanning to acquire second scanned data indicative of a geometry of the second component;
- receiving a surface quality of the second component;
- and
- when the surface quality of the second component corresponds to the surface quality of the first component, transforming the second scanned data using the geometric transformation associated with the surface quality of the first component.
A method of validating a component of an aircraft engine, the method comprising:
- using non-contact scanning of the component to acquire a point cloud indicative of a geometry of the component;
- receiving a surface quality of the component;
- selecting a geometric transformation associated with the surface quality of the component from a plurality of geometric transformations respectively associated with different surface qualities;
- transforming the point cloud using the geometric transformation associated with the surface quality of the component;
- and
- after transforming the point cloud, evaluating the point cloud against a criterion to validate the component.
A system for performing dimensional inspection of a component, the system comprising:
- a non-contact scanner operable to acquire a point cloud indicative of a geometry of the component in a non-contact manner;
- one or more data processors;
- and
- non-transitory machine-readable memory operatively connected to the one or more data processors and storing:
- a plurality of geometric transformations respectively associated with different surface qualities;
- and
- instructions executable by the one or more data processors and configured to cause the one or more data processors to:
- access a selected geometric transformation from the plurality of geometric transformations, the selected geometric transformation being associated with a surface quality of the component;
- and
- transform the point cloud using the selected geometric transformation associated with the surface quality of the component.
Dependencies are inferred from the claim text.