Product category:
Electric Linear Actuators
News Release from: Newport Spectra-Physics | Subject: URS series
Edited by the Engineeringtalk Editorial
Team on 23 July 2004
Rotating stages turn up power and
accuracy
The URS series of high-precision rotation stages replaces the popular M-URM series.
The URS series of high-precision rotation stages replaces the popular M-URM series Boasting rotation speeds four times faster and better motion performance specifications than the outgoing M-URM series stages, the new URS stages feature an enhanced, lower-profile package providing easier top-down mounting that is directly compatible with Newport VP (URS75), ILS (URS100) and IMS (URS100 and URS150) series of linear stages
This article was originally published on Engineeringtalk on 29 Sep 2008 at 8.00am (UK)
Related stories
Newport extends laser scribing systems range
Newport Corporation has brought out the Solaryx 1600P laser scribing system, the latest addition to the Solaryx range of thin film photovoltaic laser scribing systems.
Laser suits flow cytometry
Spectra-Physics' Excelsior laser platform includes low-power CW lasers at 375, 405, 440, 473, 488, 505, 532, 561, 594, 635, 785 and 1064nm.
The URS rotation stages are available with two different types of motors.
The DC motor version features an ultra-high-resolution 8000 count/rev rotary encoder with index pulse for precision homing.
It is the recommended choice for applications requiring accurate bidirectional positioning.
For the tightest position control, the rotary encoder is directly mounted on the worm screw.
This eliminates most of the possible error sources that may appear with indirect position readout.
The high torque DC motor provides the highest dynamic speed range and allows for rotating speeds up to 80 deg/s.
The stepper motor version is an economical choice for less demanding applications.
It guarantees low noise and very small incremental motions when used with our XPS or ESP100/300 motion controllers with high micro-step capability.
This version does not use encoder feedback.
Instead, it calculates position by the number of commanded steps and microsteps.
For this purpose, the stepper motor is directly attached to the worm screw with a proprietary bellow coupling with high torsion stiffness and no gear or belt drive in between.
Furthermore, 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 four-contact-point ball bearing.
The unique, two-piece design of the URS provides a low-profile compact stage with exceptional stiffness, high reliability and outstanding wobble and eccentricity.
Compared to other designs that feature two or three mounting holes for the tilted worm, the URS stages allows for four symmetric mounting holes and provide better stiffness for enhanced support of higher or off-centred loads.
Additionally, the flexible preloading system for the worm gear has been improved to guarantee a backlash-free operation with an MTBF of 20kh. Request a free brochure from Newport Spectra-Physics ...
• Newport Spectra-Physics: contact details and other news
• Email this article to a colleague
• Register for the free Engineeringtalk email newsletter
• Engineeringtalk Home Page
Search the Pro-Talk network of sites
