Aerotech’s ADRT series direct-drive rotary stages provide
superior angular positioning and velocity control. Applications
range from indexing to high-speed laser machining to precision
wafer inspection.
Superior Mechanical Design
Dual large-diameter bearings are used to maximize performance
with respect to wobble, moment stiffness, and repeatability. The
large diameter bearings permit large payloads without compromising
performance.
Brushless Direct Drive
To maximize positioning performance, the ADRT series utilizes
Aerotech’s S-series brushless, slotless motor. This motor
has all the advantages of a brushless direct-drive motor –
no brushes to wear, no gear trains to maintain, and high acceleration
and high speeds. Since it is a slotless, ironless design, there
is zero cogging, meaning that there is absolutely no torque ripple.
With its low inherent inertia and optimized motor design, the
ADRT is capable of speeds and accelerations that are significantly
higher than other competing products. These stages have a lower
height profile compared to competing products within given torque
ranges.
The low inertia and zero backlash make the ADRT the ideal solution
for applications requiring frequent directional changes.
Accurate Positioning
Line counts range from 3600 to 5400 lines per revolution. When
coupled with Aerotech’s MXH series resolution multipliers,
resolutions can be as fine as 0.12 arc sec.
The motor and high-performance rotary encoder are directly coupled
to a common shaft. The absence of gear trains and mechanical couplings
means no position errors caused by hysteresis, windup, or backlash.
Flexible Configurations
Options include a high-precision bearing for improved accuracy,
smoothness, and run-out performance. Slip rings and rotary unions
are available to ease integration of custom tooling, and a holding
brake is available to limit movement of the stage during large
impulse loads or when power is removed from the motor.
The ADRT is the only rotary table available with integrated “T-slots.”
These slots can be used to mount the table horizontally or to
attach custom application specific fixtures.
Aerotech manufactures a wide range of servo amplifiers and advanced
controllers to provide a complete integrated package.
|
United
States [Change]
