Wireless rotary axis calibrator measures angular position to ±1 arcsecond

March 26, 2013

The new Renishaw XR20-W calibration system measures the angular position of rotary axes to within ±1 arcsecond, wirelessly, for testing the accuracy of lathes, multiaxis machine tools, mill/turn machines, trunnion tables, and spindles. The system works in conjunction with XL-80 or ML10 laser interferometers, as the system combines the readings of the rotary calibrator and laser to determine positioning errors in axes under test.

New off-axis rotary software allows the system to be used even when it cannot be positioned directly on the rotary axis under test. The software calculates true position and records axis performance and errors when compared to the intended target. The test takes about 10 min., and the results are sent to a PC via Bluetooth® connection.

The 2-lb. unit attaches to a rotary axis via a flexible mounting ring assembly and is centered within 0.04 in. using a visual aid. Flexible mounting options include an adapter plate for rotary tables with unsuitable center recesses and a chuck adapter for lathes.



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