Product category:
Positioners, servo drives
News Release from: Copley Controls Corp | Subject: STB11
Edited by the Processingtalk Editorial
Team on 24 April 2007
Direct-drive linear motor shrinks
pick-and-place
Copley Controls makes decisive automation advances with its new ServoTube small-silhouette STB11 linear motor: high force and low mass produce 25g acceleration for snap-action responsiveness
The ServoTube direct drive size 11 (STB11) motor combines a slim form factor with superior control stiffness, unmatched bandwidth, and +/-12 microns positioning repeatability The STB11 combination of simplicity, reliability and dynamic performance enable fast-response digital servos to replace complex, wear-prone electro-mechanical assemblies
This article was originally published on Processingtalk on 31 May 2007 at 8.00am (UK)
Related stories
Compact linear motors get direct to the point
A compact new direct drive linear motor combines a slim form factor with high speed and 25g acceleration, shrinking the size of any pick-and-place systems
EtherCAT-compatible ultra-fast servo drives
New state-of-the-art open standard EtherCAT-compatible Accelnet servo drives operating on an ultra-fast network enable centralised control to command tightly coupled robotics axes
The motors are IP67 rated and are food-safe.
The STB11 motors provide ten times the speed and ten times the life of ballscrew actuators.
STB11-based positioning stages have the same form-factor as ballscrew actuators.
Further reading
Linear actuator with compact design
Copley Controls broadens its line of direct drive ServoTube linear actuators with the highly compact Model STA11, which creates a 10-actuator assembly less than 12 inches wide
New compact linear actuator exceeds speed limit
A new high speed industrial linear actuator has been launched, with a specially designed low profile body, making it more compact so that it can be easily integrated into confined spaces in machines
Drop-in ballscrew replacement enables an easy migration to next-generation performance.
Motor compactness-forcer width is only 26 mm, which provides benefits in applications where space is critical and costly: desktop, benchtop, and laboratory applications for example.
STB11 motors lend themselves to integration into compact systems used for inspection, analysis, assembly and packaging.
Their small silhouette translates into more production per square foot in hosts of space-critical applications.
The motor has a combination of powerful drive force and low mass, which enable it to accelerate light loads to 25g.
Specifications include stroke to 372 mm, 46N-to-92N peak force, and 3.1-to-5.2 m/sec maximum velocity.
Thrust rod diameter is 11 mm.
The integral solid-state position sensor in the motor eliminates the expensive and delicate external encoder traditionally required in linear motor systems.
Installation is simplified, cost reduced and the inherent ruggedness and dependability of the simple STB11 two-part construction is fully realized.
The load-positioning forcer is driven directly by the interaction between its permanent magnet and electrically energized magnetic fields.
There are no intervening gear trains, ballscrews, flexible couplings or drive motors to add inertia and impair responsiveness.
The STB11 permanent magnets are sealed into the stainless steel thrust rod.
The load-carrying forcer travels on a low friction single rail bearing; motor drive coils are encapsulated within the forcer, which travels in free air and acts as an efficient heat dissipater.
Users can optimise servo position control by matching STB11 motors to Copley Accelnet digital controllers.
Accelnet controllers provide powerful stand-alone and multi-axis control choices; networking options include CANopen, Ethercat, Macro and DeviceNet.
Operated from DC power supplies, the controllers deliver the 70V power needed for optimal motor performance.
Applications ServoTube 11 motors, with fast-acting, direct drive digital precision, are natural candidates to replace complex electro-mechanical assemblies.
The motors shrink space requirements in semiconductor, medical, pharmaceutical, printing, assembly, dispensing, and packaging automation.
They are free from the friction and wear that undermine repeatability and dependability of ballscrew and other positioners.
• Copley Controls Corp: contact details and other news
• Email this article to a colleague
• Register for the free Processingtalk email newsletter
• Processingtalk Home Page
Search the Pro-Talk network of sites
