Archive > 2009 > August 2009 > Axis of Rotation Metrology

Axis of Rotation Metrology - August 2009

Drew Devitt

The article "Axis of Rotation Metrology" appeared in the August 2009 issue of Power Transmission Engineering.

Summary
In the history of machine tools, spindles have been very good relative to other bearings and structures on the machine. So quality professionals have developed a cache of tools—-ball bars, grid encoders displacement lasers, etc.—-to help them characterize and understand the geometry of the structural loop. But as machine tools have improved in their capability and precision, and the demands of part-geometry and surface finish have become more critical, errors in spindles have become a larger percentage of the total error.

Keywords
spindles, metrology, axis of rotation

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