Electronic system and method for compensating the dimensional accuracy of a 4-axis cnc machining system using global offsets
AssigneeGM Global Technology Operations LLC
InventorsJie Gu, Sheri K. Kurgin, Paula J. Deeds
Life of this patent
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Abstract
An electronic system for compensating the dimensional accuracy of a 4-axis CNC machining system includes a CNC machining system configured to machine a feature into a part, a dimensional measuring device configured to measure a dimension of the part, and to provide an output corresponding to the measured dimension, and a compensation processor in communication with the CNC machining system and dimensional measuring device. The compensation processor is configured to receive the output from the dimensional measuring device, to calculate a plurality of CNC offsets, and to provide the offsets to the CNC machining system.
Claims20
An electronic system for compensating the dimensional accuracy of a CNC machining system comprising:
- a CNC machining system configured to machine a feature into a part;
- a dimensional measuring device configured to measure a dimension of the part, and to provide an output corresponding to the measured dimension;
- and
- a compensation processor in communication with the CNC machining system and dimensional measuring device, the compensation processor configured to receive the output from the dimensional measuring device, to calculate a plurality of CNC offsets, and to provide the offsets to the CNC machining system.
An electronic method for compensating the dimensional accuracy of a CNC machining system comprising:
- receiving setup information through an interface, the setup information including feature descriptive information and part information;
- receiving measurement data from a coordinate measuring machine and through the interface, the measurement data relating to one or more measured dimensions of a machined part;
- calculating a plurality of CNC offsets from the setup information and measurement data;
- and
- outputting the plurality of CNC offsets.
An electronic system for compensating the dimensional accuracy of a CNC machining system comprising:
- a four axis CNC mill configured to machine a feature into a part;
- a coordinate measuring machine configured to measure a plurality of dimensions of the part, and to provide an output corresponding to the measured dimensions;
- and
- a compensation processor in communication with the four axis CNC mill and coordinate measuring machine, the compensation processor configured to:
- receive setup information that includes a plurality of nominal dimensions, each corresponding to a measured dimension of the part;
- receive the output from the coordinate measuring machine;
- calculate a plurality of CNC offsets;
- and
- provide the offsets to the four axis CNC mill;
- and
- wherein calculating a plurality of CNC offsets comprises:
- computing a plurality of deviations between the measured dimensions and the corresponding nominal dimensions;
- translating the plurality of deviations to a plurality of CNC offset variables within a coordinate system of a CNC machining system;
- and
- optimizing the CNC offset variables to minimize the deviations.
Dependencies are inferred from the claim text.