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El Segundo, CA, United States

Knapp B.,Professional Instruments Company | Arneson D.,Professional Instruments Company | Oss D.,Professional Instruments Company | Liebers M.,Professional Instruments Company | And 3 more authors.
Proceedings - ASPE 2011 Spring Topical Meeting: Structured and Freeform Surfaces | Year: 2011

The topic of spindle balancing is a mature subject with modern two-plane balancing techniques attributed to Thearle's work from 1934 [1]. Despite exhaustive documentation in the literature, balancing and its effect on error motion measurement remains a misunderstood issue. In particular, the effect of unbalance on axial error motion is underappreciated. Unbalance-induced error motion is of critical importance for milling optics with high speed spindles. This paper demonstrates the effect of residual unbalance force on radial and axial motion of a 50,000 RPM air bearing micro-milling spindle. Source

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