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RPI re-launch the i72 Angle Reference Standard
Monday, November 14th, 2011
The i72 Angle reference standard is now available to all Laser Interferometer and Autocollimator manufacturers, calibration laboratories, and rotary axis OEM’s
The i72 is a compact high accuracy positioning system for use [...]
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QD12-35-B – Coning of Table Axis
The rotary table on test is placed on a rigid and flat support surface with the rotary axis in the vertical position. A precision sphere/hemi-sphere is placed and centred on the rotary axis at table top level and a high-resolution linear indicator is placed on the support surface close to the rotary table so that radial deviation measured at the apex of the sphere can be recorded over a minimum of two full revolutions of the table (RRa).
The process is then repeated with the precision sphere/hemi-sphere placed and centred on the spacer at a known height (h) with the radial deviations measured at the apex of the sphere recorded over a minimum of two full revolutions of the table (RRb).
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QD12-35-B |
