Hexagon Manufacturing Intelligence has extended the range of accessories for the Optiv Performance 663 and 664 co-ordinate measuring machines (CMMs) by adding two new CNC rotary tables and Optiv Dual Rotary CNC stacked rotary tables as options (www.hexagonmi.com).

The use of the integrated CNC rotary axis increases overall inspection performance when measuring rotationally symmetrical parts.

Such workpieces can be measured in a single set-up, as features distributed around the circumference of the part can be rotated into a position which is optimal for multi-sensor measurement.

PC-DMIS measuring software takes into account the rotation of the workpiece co-ordinate system relative to the machine co-ordinate system.

Moreover, the Optiv Dual Rotary option allows the entire rotary axis to swivel on an additional axis, so the sensors can reach geometries/features that are inclined to the longitudinal axis of the workpiece.

The tactile measurement of prismatic workpieces on a rotary table or a stacked rotary table also offers improved efficiency, as complex geometries become easily accessible with only a few simple styli configurations. This reduces the number of probe changes, as well as the number of axis movements.

Two sizes of CNC rotary table are available, offering maximum torques of 2 or 10Nm and centred load capacities of 900 or 1,800N. Depending on the version, there is the option of self-centring three-jaw chucks for diameters between 2 and 125mm.