Six-degrees of positioning accuracy

13 September 2016

Aerotech’s HexGen hexapod offers six-degrees-of-freedom for positioning. The HEX500-350HL high-load, precision hexapod is suited to use in applications in X-ray diffraction, sensor testing, and high-force device manipulation.

With its high-load capacity, large travels, high speeds, and sub-micrometer precision, the unit is actuated via six high-accuracy struts that are built with preloaded bearings, ball screws, and drive components. It is driven by AC brushless, slotless servomotors which are said to maximise device lifetime and performance. 

The servomotors are directly coupled to the actuator ball-screw enabling increased drive stiffness, higher positioning accuracy, and better minimum incremental motion when compared to designs that use belts or compliant couplings. The strut pivot-joints are also engineered to provide low friction and high stiffness enhancing overall hexapod performance.

The platform and base can be easily modified with user-specific features or mounting patterns. The HEX500-350HL is designed with a 150mm diameter clear aperture in both the platform and base to allow for workpiece access from the bottom. The base is designed with mounting holes to adapt directly to English or metric optical tables. The hexapod can also be vacuum prepared for demanding applications in synchrotron sample or optics adjustment, semiconductor manufacturing and inspection, or satellite sensor testing.

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