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The aerospace industry is driving the development of systems that increase the linear accuracy of machine tools. A conventional machine tool normally uses a computer numerical control unit coupled with a rotational device to track linear positions. However, due to the greater demands of aerospace equipment, the aerospace industry has developed systems that use lasers, which are more accurate. The industry has also developed computer-based systems that allow machine tools to compensate for temperature effects., Aerospace machine tools are flying high with accuracy enhanced by laser scales and thermal compensation. The same technology promises to benefit machine tools in other industries. Where does machine tool [...]

The B5.54 accuracy standard for machine tools recommends standards for determining the accuracy of new computer numerical control machine tools commercially available in the US. Unlike other foreign standards, this one includes every aspect of machine geometry and testing. The test covers linear displacement accuracy, bidirectional accuracy, volumetric performance and contouring performance. It establishes a universal language for machine accuracy, specifying that the inspection of new machines and reporting of their capabilities be performed through three tools. These are the ballbar, laser interferometer and spindle analyzer. Using accuracy statements based on B5.54 test, users of machine tools can now make apples-to-apples comparisons and get immediate results of each testing., The only thing better than knowing your machine tool just made a good part is knowing beforehand that it was going to make a good part. That knowledge is worth [...]

A combination of laser scales and thermal compensation systems is helping the aerospace industry improve accuracy when machining long, large parts. The device many machine tools use to measure their [...]