A powerful precision stage integrating modern positioning technology with robust payload capability, expanding the high precision performance envelope to include high payload and long travel applications.
Lineax® direct drive linear motors for stage positioning exhibit advantages over conventional screw driven stages. Direct drive systemsoffer excellent trajectory control. The nature of these stiff, no elastic structures enable fast settling times, high repeatability and the fastest servo response. Free of rotating inertia, much faster acceleration and higher velocities are achievable. Wear of rotating components is eliminated increasing reliability, uptime, and extending servicing intervals each of these contributes to reducing cost of ownership. The direct drive linear motor with the high-resolution encoder allows precise velocity regulation. The linear motor and other components in Lineax can be prepared for vacuum compatibility.
Lineax-10 structural materials are high-strength aluminum alloys, all surfaces are precision machined, finished with hard coat-anodize in light gray. Two precision square type guide rails with integrally pre-loaded, re-circulating, linear bearings are guided by two long carriages on each rail. The guide system requires only standard lubrication service.
Lineax-10 stages have a compact envelope with no motor overhang. Motor and encoder cables are routed in an external cable loop for long life and serviceability. The connection port is at the stage end with axial bulkhead exit.
Lineax-10 has the widest envelope allowing for the heaviest load with the furthest travel length of all the Lineax series stages.
A linear motor driven stage lacks the mechanical gearing advantage of a screw driven stage and therefore is more application specific. Loading directly affects maximum acceleration available, in accord with Newton’s relationship F=(m*a). The ability of a stage to reach a specific maximum speed may affect the cycle time or system throughput.
Linear motors generate substantial peak force when supplied the necessary current by the servo-drive. The higher the current, the more resistive heating experienced by the copper magnet coils. Resulting in rising motor temperature. When the application is for high precision positioning, temperature rise has the undesirable effect of influencing accuracy via thermal induced dimensional distortion. Careful motor sizing, proper heat sinking and attention to drive current modulation can be used to optimize performance for either short term or for a life time duration of high precision operations.
|Travel Length (mm)||300||450||600||900||1200|
|Standard SP||± 10 µm||± 15 µm||± 20 µm||± 20 µm||± 30 µm|
|High Precision HP||± 5 µm||± 7.5 µm||± 10 µm||± 10 µm||± 15 µm|
|Standard SP||± 2.0 µm||± 3.0 µm||± 3.5 µm||± 4.0 µm||± 5.0 µm|
|High Precision HP||± 1.0 µm||± 1.5 µm||± 2.0 µm||± 2.0 µm||± 2.5 µm|
|Standard SP||10 arc-sec||10 arc-sec||10 arc-sec||10 arc-sec||10 arc-sec|
|High Precision HP||4 arc-sec||4 arc-sec||4 arc-sec||4 arc-sec||4 arc-sec|
|2 axis system|
|Standard SP||20 arc-sec||20 arc-sec||20 arc-sec||20 arc-sec||20 arc-sec|
|High Precision HP||5 arc-sec||5 arc-sec||5 arc-sec||5 arc-sec||5 arc-sec|
|Extra High Precision XHP||3 arc-sec||3 arc-sec||3 arc-sec||3 arc-sec||3 arc-sec|
|Travel Length||300 -1250 mm|
|Drive System||Brushless Linear Motor|
|Maximum Acceleration||Payload Dependent|
|Maximum Speed||Unladen 3 m/s|
|Maximum Peak Force||1,680 N|
|Maximum Continuous Force||293 N|
|Peak / Ave Current (RMS)||36 / 8 A|
|Recommended payload limit||50 kg / 110 lbs|
|Construction||Alluminum Alloy Body with Hard Coat Anodize|