Product category:
Positioners, servo drives
News Release from: Copley Controls Corp | Subject: STB11
Edited by the Processingtalk Editorial
Team on 31 May 2007
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
The Copley Motion Systems STB11 motors provide ten times the speed and ten times the life of ballscrew actuators, making them ideal for boosting productivity in high speed point-to-point positioning applications STB11-based positioning stages have the same form-factor as ballscrew linear drives, enabling an easy migration to next-generation performance
This article was originally published on Processingtalk on 24 Apr 2007 at 8.00am (UK)
Related stories
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
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 motor integral solid-state position sensor eliminates the expensive and delicate external encoder traditionally required in linear motor systems, making it rugged for applications requiring up to an IP67 rating.
The elimination of external encoders also simplifies integration compared to traditional linear drive technologies.
The motor load-positioning forcer is driven directly by the interaction between its permanent magnet and electrically energised magnetic fields.
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
There are no intervening gear trains, ballscrews, flexible couplings or rotary motors to add inertia and impair the dynamic response of the linear drive.
The STB11 permanent magnets are sealed into the stainless steel thrust rod.
The load-carrying forcer travels on a low friction single rail bearing and the linear motor drive coils are encapsulated within the forcer.
The load carrying forcer travels in free air and dissipates heat efficiently without the need for forced convection cooling.
This enables the STB11 to operate continuously at high duty cycles.
Like all the tubular motors in the ServoTube range, the STB11 features standard +/-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 in pick and place arrangements.
Productivity can be increased where space is critical and costly, such as desktop laboratory automation machines because the forcer width is only 26 mm.
STB11 linear motors deliver high performance linear motion in a small unit for integration into compact systems used for inspection, analysis, assembly and packaging.
The speed and force of the STB11 is unparalleled in compact devices.
Powerful drive force and low mass enable the STB11 to accelerate light loads to 25g.
The STB11 range includes strokes of up to 372 mm, 46N-to-92N peak force, and 3.1-to-5.2 m/s maximum velocity.
Users can optimise servo position control by matching STB11 linear 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.
• 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
