- Air-bearing scan axis; mechanical-bearing step axis
- Dual linear-motor-driven step axis
- Linear encoder or laser interferometer feedback
|Stage model||Total Travel||Accuracy||Minimum Step||Maximum Speed||Maximum Acceleration||Additional information|
|AHL9000||350 x 350 mm||Up to ±1.0 µm||Up to 0.5 nm||1000 mm/s||1 g||View source|
The AHL9000’s scan axis was designed using proven air-bearing technology developed for the ABL9000 planar air bearing. This axis uses active preload on both the vertical and horizontal surfaces in order to provide outstanding stiffness and dynamic performance. The AHL9000 also takes advantage of the cost-effectiveness of a mechanical bearing step axis. The combination of these two bearing technologies in one stage provides a system that is optimized for step and scan operation.
Linear Motor Drive
The driving force behind this stage is Aerotech’s BLM series brushless linear servomotor. Aerotech’s long history and experience as a motor manufacturer is reflected in this latest design. The BLM utilizes an ironless forcer, which means there is zero cogging and no attractive forces, resulting in unsurpassed smoothness of motion. Capable of generating high force and velocity, the BLM represents the ultimate combination of power and performance.
Noncontact linear encoders with submicron repeatabilities are standard on all AHL9000 series stages. Optional 2D factory calibration is available to further increase the standard accuracy, straightness and yaw specifications to even finer precision.
We carefully optimize the cable bend radius to ensure years of trouble-free operation. In the unlikely event of failure, Aerotech’s modular design makes cable replacement quick and easy with minimal downtime.
To facilitate integration into the final system we include all customer-required cables, air hoses, etc. in our CMS bundle. Both ends are fully connectorized for simple integration into the customer’s machine.