The key to the time savings with five-axis inspection is the ability to overcome this limitation. The technique uses synchronized head and machine motion when scanning, allowing the probe to follow changes in part geometry rapidly without introducing dynamic errors.

As a result, the CMM is able to move at a constant velocity while measurements are being taken, without impacting accuracy.

The second benefit of five-axis inspection is the ability to increase measurement accuracy by using tip-sensing probes. Most moldmakers are familiar with using five-axis machining and the benefits of using shorter cutters. This is possible because of the ability of a five-axis machine to lower the head toward the part and then orient the cutter onto the surface. With three-axis machining longer cutters must be used to reach the surface, which are inherently less accurate. In a similar way, five-axis inspection measures very close to the part surface. This means that shorter probes can be used, so giving greater inspection accuracy.