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URS Series Precision Rotation Stages

URS Series Precision Rotation Stages
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URS Series Precision Rotation Stages - 1

M o t o r i z e d P o s i t i o n i n g 819 TECHNICAL REFERENCE MOTORIZED LINEAR STAGES MOTORIZED ROTATION STAGES MOTORIZED OPTICAL MOUNTS MOTORIZED ACTUATORS CONTROLLERS AND AMPLIFIERS SYSTEMS URS Series Precision Rotation Stages • Backlash-free continuous rotation with 20,000 MTBF • 8,000 cts/rev rotary encoder on DC motor versions enables 0.0005° resolution • Unique, compact 2-piece bearing design provides exceptional wobble and eccentricity • Economic stepper motor versions with high motion sensitivity The URS Series provides precision 360° continuous motion in a low profile package. They meet the requirements of numerous research and industrial applications and are directly compatible with our VP (URS75), XM, GTS, ILS (URS100), IMS (URS100 and URS150) and other series of linear stages. URS rotation stages are available in two versions: The DC motor version features an ultra-high resolution 8,000 cts/rev rotary encoder with index pulse for precision homing and is the recommended choice for applications requiring accurate bidirectional positioning. For the tightest position control, the rotary encoder is mounted directly on the worm screw. This eliminates most of the possible error sources associated with indirect read feedback devices. The high-torque DC motor provides the highest dynamic speed range and allows for rotating speeds up to 80°/s. Furthermore, the URS-CC features an adjustable limit switches to prevent over travel. The stepper motor version is a more economical version for less demanding applications. When used with motion controllers with high micro-step capability, like the XPS or ESP300, low noise operation and very small incremental motions are guaranteed. The stepper motor versions do not use encoder feedback, but reach a position by the number of commanded steps and micro-steps. For this purpose, the stepper motor is directly attached to the worm screw using a proprietary bellows coupling that has a high torsional stiffness, eliminating the need for a gear or belt drive. The high output torque of the stepper motor minimizes the risk of lost steps and provides good linearity between commanded micro-steps and the actual motion of the stage. All URS rotation stages feature a proprietary 4-point contact ball bearing. The unique, 2-piece design of the URS provides a lowprofile compact stage with exceptional stiffness, high reliability and outstanding wobble and eccentricity. The tilted worm screw arrangement allows for 4 symmetric mounting holes as compared to other designs that only feature 2 or 3 mounting holes. This enables the URS stages to provide better support of higher or off-centered loads. Additionally, the flexible preloading system for the worm gear was improved to guarantee a backlash-free operation with an MTBF of 20,000 hours. Design Details Base Material Hardened steel with aluminum body Bearings Large diameter ball bearings Drive Mechanism Ground worm gear with self-compensating preload. Additional 1:2.75 drive belt with URS-CC versions (no belt on URS-PP versions) Worm Gear Ratio 1:90 Feedback CC: Worm mounted rotary encoder, 8,000 cts/rev, index pulse. PP: None Limit Switches Two independently adjustable optical limit switches Origin Optical, fixed at position 0°. Typical 0.0005° repeatability for URS-CC and 0.04° repeatability for URS-PP Manual Adjustment Via allen wrench at the end of the worm screw. Allen wrench is included. Motor CC: UE34CC DC servo motor PP: UE34PP Two phase stepper motor, 1 full step = 0.02° Cable 3 m long cable included Specifications PP CC Typical Guaranteed Typical Guaranteed Travel Range (°) 360 continuous(1) Resolution (°) 0.0002(2) 0.0005 Minimum Incremental Motion (°) 0.0002 0.002 Uni-directional Repeatability (°) 0.001 0.002 0.001 0.002 Reversal Value (Hysteresis) (°) 0.006 0.01 0.002 0.004 Absolute Accuracy (°) 0.016 0.03 0.012 0.023 Maximum Speed (°/s) 40 80 Wobble (ìrad) 20 50 20 50 Eccentricity (ìm) 3 3 MTBF 20000 h at 25% load and with a 30% duty cycle 1) With disabled limit switches 2) Equal to 1/100 of a full step See the Motion Control Metrology Primer section (see page 775) for more information on typical and guaranteed specifications Email: sales@newport.com • Web: newport.com

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URS Series Precision Rotation Stages - 2

820 Phone: 1-800-222-6440 • Fax: 1-949-253-1680 M o t o r i z e d P o s i t i o n i n g MOTORIZED ROTATION MOTORIZED LINEAR STAGES TECHNICAL REFERENCE STAGES SYSTEMS CONTROLLERS AND AMPLIFIERS MOTORIZED ACTUATORS MOTORIZED OPTICAL MOUNTS Dimensions Dimensions in inches (millimeters) Ordering Information Model Description URS75BCC URS75 rotation stage, DC motor URS75BPP URS75 rotation stage, stepper motor URS100BCC URS100 rotation stage, DC motor URS100BPP URS100 rotation stage, stepper motor URS150BCC URS150 rotation stage, DC motor URS150BPP URS150 rotation stage, stepper motor URS75TP...

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URS Series Precision Rotation Stages 3Pages

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URS Series Precision Rotation Stages
3Pages