1997-06-03

Optical End-Point Control for NC Machinery 972253

A novel method for improving the accuracy and lowering the cost of large NC drilling machines has been developed. The method employs a 3D tracking interferometer measurement system to measure and correct the position of the machine end-effector prior to each drill operation. This method eliminates many geometric and thermal errors inherent to NC drilling machines. The paper discusses the background, theory, initial implementation, test results and future enhancements of the method.

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