Ultra-High-Speed Scanning Technology

Renscan5 ultra-high-speed scanning technology from Renishaw, Inc. (Hoffman Estates, IL) delivers tremendous throughput gains in coordinate measuring machine (CMM) inspection of critical and complex parts.

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Renscan5 ultra-high-speed scanning technology from Renishaw, Inc. (Hoffman Estates, IL) delivers tremendous throughput gains in coordinate measuring machine (CMM) inspection of critical and complex parts. The breakthrough system combines a dynamic, infinite positioning measurement head with 5-axis machine control and a first-ever laser-corrected probe to measure at speeds up to 500 mm/sec. vs. conventional CMM scanning at 5-15 mm/sec. Renscan5 virtually eliminates the measurement errors normally associated with existing three-axis scanning systems. The five-axis system achieves this by allowing the smaller REVO measuring head, a 3-D measuring device in its own right, to perform most of the motion during inspection routines. This minimizes dynamic errors caused in acceleration/deceleration of the larger mass of a CMM structure. Low-mass, low-inertia design allows ultra-high-speed data capture—up to 4000 points a second compared to 200-300 data points for conventional scanning. The REVO head uses synchronized motion when scanning to quickly follow changes in part geometry, without introducing its own dynamic errors. A "tip sensing" probe mounted to the REVO measuring head further minimizes the errors caused by the dynamic effects of high-speed motion and allows the use of long styli without reducing accuracy. A laser light system is used to accurately measure the exact position of the probe tip, with a beam of light directed from within the probe body down a hollow stylus to a reflector at the stylus tip. Renscan5 and REVO are available with the new UCC2 universal CMM controller that forms the foundation for Renishaw’s future high-speed scanning systems.