The XM Series of Ultra-Performance Linear Stages deliver world-leading dynamic performance capable of consistent, reliable motion to 1 nm. Innovative and compact; XM stages provide robust, repeatable motion with outstanding accuracy on the most complex trajectories. Featuring, precision engineered components and design that minimizes both wear and motor heating, XM performance maximizes your motion investment for the long-term. XM stages are an ultra-high-performance solution for applications such as laser machining, semiconductor wafer process, sensor test and calibration, ultra-precision assembly and more. XM stages are stackable for application specific multi-axis assemblies with other Newport Stage types. Newport provides orthogonality correction, error mapping services as well as custom assemblies developed for customer applications. All XM stages are provided with a test report, free of charge. Contact Newport for additional information.
For critical positioning applications, Newport offers micropositioning calibration services. We will create, implement and verify an electronic compensation process to improve the absolute position accuracy of your Newport XM stages when commanded by our XPS advanced motion control system. Compensation is performed at 20.0 °C, +/-0.2 °C, for linear and non-linear errors, ensuring accuracy of up to 1 µm/100 mm over the middle 80% of travel. A certificate of calibration per Newport Metrology Procedure A167 and measured error maps are provided. Click here for complete information on our Micropositioning Calibration Services.
The flatness of the surface is often a major factor in the positioning accuracy and repeatability of a motion system. The polished granite surfaces are among the flattest and commercially available structures. Granites tight flatness tolerance and extreme hardness make it an attractive option to complement Newports Ultra-Precision Linear Motor XM series stage. The GB series granite base plates feature 3 point mounting, to make-up for non-flat tables. Edge handles facilitate handling and locating the base plate on the work surface.
XM stages are machined from stress-relieved 7075 aluminum, ensuring long-term strength and stability. All critical stage surfaces undergo multiple machining processes and precision grinding under strict temperature and quality control to further improve overall performance and accuracy. The T-shaped carriage used on the XM provides the optimum solution for precision XY assemblies without impacting the stage preload. It also more robust and is more tolerant to non-ideal mounting conditions than stages with a C-shaped carriage design.
Unlike screw driven stages, the XM employs a center-driven, ironless linear motor as the driving element. Since the linear motor is a frictionless direct drive device, there is no backlash or hysteresis, wind-up or stiction limiting the motion performance. The linear motor drive also offers the advantage of higher speed, acceleration and system responsiveness with no wear to motor brushes or drive screws. The extra-large, ironless motor coil ensures zero cogging for ultra smooth velocity control and provides higher efficiency compared to alternative stage designs. This results in significantly less heat generation, which is generally the main limit for ultra-precision motion applications. To further improve thermal management and its effect on stage performance, the XM also has the benefit of a sophisticated length decoupling of the magnetic track from the stage carriage
To ensure the most accurate trajectory control, XM stages feature matched pairs of best-in-class anti-creep crossed roller bearings. The absence of recirculating elements in these bearings leads to outstanding ripple-free motion adequate for the most demanding scanning and inspection systems. Moreover, the geared retainers prevent bearing cage migration, which can occur with other linear bearing products.
Precision position feedback is supplied by a high accuracy LIF 481 Heidenhain Linear Scale. The precision alignment and mounting of this low thermal expansion scale in the center of the stage minimizes the impact of temperature changes on stage repeatability and accuracy. The encoder signals are interpolated by Newports XPS motion controller with sub-nm resolution and less than 1 nm noise for outstanding position sensitivity and stability. Absolute home position and limit signals are incorporated on the same scale without any further electronics or mechanics for improved reliability and accuracy. In general, all electronics are attached to the stationary base, so there are no moving cables inside the stage. This results in an extremely compact design with exceptional reliability and safety. The space-saving, fixed read head design avoids any moving cables inside the stage and underscores the robustness and reliability of the XM stages, exemplified by an MTBF of 20,000 hours.
XM Series Ultra Precision Linear Stages are compatible with the XPS Universal High-Performance Motion Controller/Driver using XPS-DRV02.