Terminology for Accuracy Tests of High-Performance Rotary Stages Motivation In this post, we present terminology related to the test and metrology of highly accurate rotary stages (spindles) commonly used in the precision motion industry. The aim is to help customers and [...] AEM or repeatability of eccentricity is less than 1um on average. In general, the performance of a rotary stage depends on the bearing type and diameter. Larger diameter stages provide better performance

Performance of a Large Motorized Rotary Air Bearing Stage for Synchrotron Crystallography Air bearing rotary tables are often used in [...] current 9 Amps peak current 7 Nm/amp torque constant 80 V/kRPM back EMF 5 Ohms resistance The stage includes an optical rotary encoder with a digital TTL output signal. After 400x interpolation, the [...] automatically adapts the servo settings to load changes in real time. Video: Air bearing linear and rotary positioning stages provide the speed, accuracy, and clean room compatibility required for high-precision

. (left) Three motor planar XY air bearing stage with active yaw control and (right) rotary air bearing stage. (Image: PI) Learn more Frictionless [...] even greater with a custom design. XYZ Magnetic Levitation Stage (Image: PI) Learn more Wobble-free or High Speed Rotary Motion is Needed Rotary air bearings are [...] bearing solutions can provide, and the rotary motion is very smooth, since there are no roller elements. Rotary positioning stages generally can

assembled in software to create a 3D image. Left: Z-Theta motion system: Vertical linear air bearing stage which with rotary air bearing stage (shown with dummy mass). The axis of rotation is parallel to [...] components used in the helical tomography motion system: A-812 advanced ACS motion controller , A-623 rotary air bearing stage , and A-123 linear air bearing stage PIglide A-123 Z Axis, linear air bearing [...] applications. The video above shows a 7-axis system consisting of a custom PI Hexapod and PRS200 Rotary stage in a setup with 3D-printed phantoms imaged repeatedly with a cone-beam computer tomography

, that are employed as the driving force in precision motion systems, for example linear motion stages and rotary positioning stages. In this study, we are looking at direct-drive ultrasonic resonant [...] motors is their minute size, allowing for the design of high precision, yet very small linear and rotary stages. In the following, we are looking at the behavior of the U-624 miniature rotary stage, which [...] systems. Fig. 8 Non-magnetic version of the U-653 rotary stage (Image: PI) Video: Basic design of encoded miniature rotary stages based on ring-shaped

to 10N pushing/holding force. They can be integrated into linear actuators and linear positioning stages, however the principle does not apply to rotary stages. The operating principle is shown in the [...] a compact stand-alone EUV microscope. (Image: PI) Learn more Multi-axis combination of X-Z linear stage (Q-545), with high-speed U-628 ultrasonic miniature rotary stage. (Image: PI) During the stick [...] operating time <10 sec (2x back and forth across the complete travel range) Product Overview Linear Stages Rotary Stages Custom 6-Axis Parallel Positioners In addition to linear and rotary positioners,

motors start at under $2k for a simple linear air bearing slide bearings and under $3k for a small rotary bearing. Planar XY stages, such as the A-311, can be compact and affordable, when compared to similar cross roller stages. Watch video Learn more 2. Air bearings are only used for high speed motion. It’s true that air [...] following error can be difficult to meet with a mechanical solution. Air bearing stages offer many of the advantages of piezo-flexure stages, but at much larger travels. Cross section of

rotary flatness. Radial error motion is defined as the linear error motion of a rotary stage perpendicular [...] also referred to as eccentricity. Tilt error motion as defined as the angular error motion of a rotary stage’s axis of rotation. This error motion is sometimes also referred to as wobble. Rotary error [...] multiples of the rotation frequency. The two errors combined comprise the total error motion of the stage, which is typically the value we measure and report. Rotary stage error motions There can be

bearing XY stage with an air bearing rotary table. Compact, air bearing-based low profile XY-theta stage assembly. [...] stage / V-610 low profile rotary stage direct-drive, multi-axis motion system, is one example of a [...] two V-508 compact linear translation stages and a V-610 direct-drive rotary stage . High-throughput industrial automation applications of

stage’s moving part and the size of the offset. The greater the offset distance between the stage and the [...] ) This test is performed using the Renishaw XR20-W rotary axis calibrator mounted to the rotating stage table. The XR20-W consists of an integrated angular [...] Compensation (Image: PI) After Dynamic Error Compensation (Image: PI) 7.2. PIglide A-623.050A1 Rotary Air Bearing Stage A-623 Rotary Air Bearing Stage (Image: PI) Before Dynamic Error Compensation (