Aerotech’s new ANT-LX nanotranslation stages combine real-time axis calibration with direct-drive linear servo motors, non-contact optical encoders and linear drive amplifiers. This technology offers a throughput advantage over conventional lead screw and piezo drive based mechanical systems and this second generation design now has twice the resolution and speed capability of its predecessor - the ANT-25 and -50 series - thanks to improved crossed-roller bearings and new 40 MHz encoder processing.
Used with a dedicated version of Aerotech’s A3200 Automation Platform motion control system, the ANT-LX has a maximum resolution of 2.5 nanometres and a calibrated positional accuracy of ±0.3µm with a top speed performance of 500mm/sec and acceleration to 5g. Repeatability is within ±0.05 µm with differential straightness and flatness specifications to 3.0µm per 25mm of travel with a maximum deviation of ±1.0µm.
The unit measures 90mm wide and 33mm high with an overall working length of less than 130mm for the 25mm travel version, and under 200mm for the 50mm travel version. Maximum load is 8kg and X-Y, X-Y-Z or other mechanical configurations are made easier with matching fixed base and moving carriage hole patterns. The ANT-LX range may also be assembled with other ANT series stages (vertical lift, rotary and goniometer) to create complete multi-axis motion platforms.
To meet and exceed the smooth motion characteristics required for micron level incremental moves and velocity-critical scanning applications, the ANT-LX features an Aerotech’s cog-free direct-drive brushless linear servo motor driven with a linear amplifier. This combination provides low-noise, ultra quiet performance with integral resolution multiplication for the 20 micron pitch, sinusoidal output linear encoders.
Low profile, precision crossed-roller bearing elements provide improved load and increased acceleration capability. The housing is black anodised aluminium with a hardcoat finish for extra durability and includes ample threaded inserts for customer fixture mounting.
The ANT-LX is aimed at high-throughput production and test applications in fibre optics, photonics, MEMS and sensor manufacture and may also be applied to any application where high positional resolution and precision excellence is required at a competitive price. The long-life, low maintenance profile of the ANT-LX may be of interest to OEM’s and machine builders who require low cost of ownership, future proof, fit and forget motion systems.