Ballbar testing provides a simple, rapid check of a CNC machine tool's positioning performance to recognised international standards (e.g. ISO, ANSI/ASME, etc). This allows users to benchmark and track the condition of their machines, and to quickly diagnose problems that may require maintenance. It also identifies the error sources that produce them.
Regular testing of machine tools using QC20 ballbar helps to:
-ensure accurate parts, first time, from CNC machines
-reduce machine down-time, scrap and inspection costs
-demonstrate compliance with machine performance and quality management standards
-implement fact based predictive maintenance
The XR20 rotary axis calibrator works by providing highly accurate, repeatable rotary axis calibration for stages, jigs and machine tools.
It consists of an integrated angular retroreflector mounted on a precision servo-controlled axis. The angular position of the axis, and the optics relative to the main body housing, is controlled by a very high accuracy encoder system with the scale directly machined on the main bearing.
Linear measurement accuracy is an assured ±0.5 ppm thanks to a precision stabilized laser source and accurate eadings can be taken at up to 50 kHz, with a maximum linear measurement speed of 4 m/s and a linear resolution of 1 nm, even at maximum speed. All measurement options (not just linear) are based on interferometric measurements, giving confidence in the accuracy of the data recorded.
