PH20 (5-Axis Touch-Trigger System) PH20 is another innovative measurement product from Renishaw that transforms co-ordinate measuring machine (CMM) performance. For the first time, 5-axis technology developed for the multi-award winning REVO® measurement system is available for touch-trigger applications on all sizes of CMM. PH20’s unique ‘head touches’ allow measurement points to be taken by moving only the head rather than the CMM structure. Using only the rapid rotary motion of the head, points can be taken faster, and with improved accuracy and repeatability. Furthermore, 5-axis motion eliminates time spent indexing the head. Together these speed increases typically result in a 3-fold improvement in throughput over conventional systems.

Use your head! It’s infinitely better

Unlike conventional touch-trigger measurement methods which rely on speeding up the motion of the CMM's 3 axes to measure quickly, PH20 utilises the head motion technology developped for the multi-award winning REVO® system to minimise the dynamic errors of the CMM at higher measurement speeds.
Intelligent head technology affords rapid touch-trigger measurement by using 'head-touches' where measurement points are taken by moving only the head rather than the CMM structure. Using only the rapid rotary motion of the head, points can be taken faster, and with improved accuracy and repeatability.

Easy access to features at any angle

PH20’s infinite positioning capability guarantees optimal feature access, minimising stylus changes.
5-axis simultaneous motion allows larger parts to be measured on the CMM by minimising the space required around the part for head rotation.
PH20 automatically aligns itself with the part coordinate system, avoiding stylus collisions and the requirement for accurate fixtures.
 

Faster calibration

The unique ‘inferred calibration’ technique developed for PH20 determines the head orientation and probe position in a single operation, allowing subsequent measurement at any head angle. Further modules only require a few touches on the calibration sphere before use. (Enhanced metrology performance is available if needed by calibrating the probe tip at the feature orientation.)
These dramatic time savings accumulate as the calibration process is repeated on a regular basis to comply with quality procedures or following a probe crash.

Integral industry standard TP20 probe

Users of the PH20 probe head will immediately have access to the range of proven TP20 probe modules, providing a wide selection of trigger forces, directional sensing options and extensions to meet application requirements*. The detachable modules provide crash protection and can be automatically changed using the MCR20 change rack.

• Repeatability – improved when ‘head touch’ method is used
• Accuracy – improved by using feature based calibration and ‘head touches’
• Pre-travel variation – automatic compensation
• Module changing – automatic tip offset correction