March 15, 2016 Volume 12 Issue 11

Motion Control News & Products

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OnRobot launches advanced magnetic gripper for safe and precise cobot applications

OnRobot has launched the MG10, a versatile, high-performance, easy-to-use magnetic gripper for material handling, assembly, and machine tending applications in manufacturing, automotive, and aerospace environments. The gripper is fully compatible with all major robot brands.
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What motor torque constant to use for drive type: Theory and application

Calculating motor torque from available drive current can be confusing due to many different drive types and the multiple ways current is specified. This informative online paper from Celera Motion provides the key formulas for torque constant and motor current from the fundamental principles of three-phase motor theory. It also walks through the many ways torque can be calculated. This information applies to a brushless motor (BLAC or permanent magnet synchronous machines) configuration.
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Easy-integration compact Z-Theta motion platform

The easily integrated Z-Theta motion platform from Haydon Kerk Pittman offers linear and rotary point-to-point motion in a compact footprint. This modular, "bolt-in" package features the patented ScrewRail linear actuator, which combines guidance and linear transmission in a slender co-axial profile. The unique dual-motion integration with a pair of stepper motors adds rotary (theta) motion that reduces motion system size by 50% to 80% and provides as much as a 60% overall cost reduction when compared to traditional design approaches. This setup can be customized with a variety of lead screw resolutions, free-wheeling and anti-backlash nuts, stepper motor options, and optical encoder line counts.
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Good beer. Zero packaging accidents.

The Danish division of Carlsberg, one of the leading brewery groups in the world, has significantly improved staff safety and taken steps toward achieving zero accidents since integrating Universal Robots cobots into its Fredericia-based factory. The company invested in two cobots, the space-friendly UR3 and the powerful UR10, to tackle carrying packaging cartons from the pallet to the magazine -- a monotonous and strenuous task that often left staff with repetitive strain or severe cuts. Working in tandem, the cobots can handle up to 500 packaging cartons per hour. Now the company has purchased four additional cobots to further automate its production lines.
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Precise motion for optics and thermal imaging

From scanning buildings for heating and cooling "leaks," to scanning people at the airport for possible fever, thermal imaging systems play a critical role in many industries. Thermal cameras rely on many of the same motorized components as standard cameras: they require focusing, zooming, aperture adjustments, and quick-moving shutters. Inside these advanced optics systems, micro brush DC motors from FAULHABER help cameras capture precise images and temperature readings in a fraction of a second.
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SureStep stepper motor linear actuators

Automation-Direct has added stepper motor linear actuators to its SureStep line of stepper motion control products. These linear actuators are NEMA 17 or 23 frame stepper motors with a stainless steel lead-screw extension of the rotor. In conjunction with the provided screw nut, these units translate motor torque into linear thrust. They can provide up to 193 lb of thrust, or speeds up to 18 in./sec. Eight standard leads (travel per rev) are offered, with screw lengths of 6, 9, or 12 in. They start at under 100 bucks.
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Mini actuator with built-in servo drive

The FHA-C Mini Series of extremely compact actuators from Harmonic Drive delivers high torque with exceptional accuracy and repeatability. An integrated servo drive version utilizing CANopen communication is now available. This product eliminates the need for an external drive and greatly improves wiring while retaining high-positional accuracy and torsional stiffness in a compact housing. Dual absolute encoders included. This new mini actuator is ideal for use in robotics.
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Mechatronic solution packages from Bosch Rexroth

The Smart Function Kit is a new Smart MechatroniX solution platform from Bosch Rexroth that offers quick and intuitive commissioning and configuration for a range of processes such as joining, pressing, and handling. This modular toolbox consists of an electromechanical cylinder, a force sensor, a motor, a servo drive, and a motion controller, plus a software package that enables easy commissioning and operation as well as comprehensive process analysis. Available soon is a Smart Function Kit for handling tasks and a Smart Flex Effector, which is a compensation module with an active measuring function in six degrees of freedom.
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Precision micro stage for high-volume applications

The M3-LS-U2-10 Linear Smart Stage from New Scale Technologies is a direct-drive precision piezoelectric micro stage with embedded controller designed for integration into compact devices. Applications include instruments for DNA sequencing, wearable medical devices, instruments for point-of-care diagnostics, devices for telemedicine, handheld imaging systems, and laser beam steering. The stage has high stiffness with no gears or backlash, low acoustic noise, and no high voltage. It can be powered by batteries or any low-cost DC supply and is suitable for use in near-patient instruments and wearable devices.
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Ball rail systems and ball screw assemblies: 20,000 km without relubrication

Good news for mechanical engineers and users: the ball rail systems BSHP and ball screw assemblies BASA from Bosch Rexroth now achieve lubrication intervals that are up to four times longer. In more and more applications, they can even be used maintenance-free over the entire service life of a component. Low-maintenance or maintenance-free linear motion tech minimizes operating costs and protects the environment. Recent tests show the lubrication intervals for BSHP ball rail systems are 2x improved and can cover up to 20,000 km before the first relubrication. BASA ball screw assemblies achieve up to 200 million revolutions with the basic factory lubrication, a 4x improvement.
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Depend on FAULHABER drives for critical medical applications

Surgical robotics systems offer an overwhelming advantage over traditional methods: improved precision and speed, faster patient healing, and a reduced margin of error. For minimally invasive procedures requiring this level of precision, performance and quality, the OEM engineers of surgical robotics systems rely on FAULHABER brushless dc motors.
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Virtual Expo: Automating machine tending tasks with cobots Feb. 23-24

Universal Robots -- the originator of the collaborative robot -- is hosting the first-ever virtual expo focused on automating machine tending tasks with cobots. The two-day Machine Tending Expo event Feb. 23-24 aims to help manufacturers looking to deploy cobots to tend machines such as CNC, press brakes, injection molding, or 3D printers. In live demos, keynotes, and interactive booth sessions with exhibiting partners, Universal Robots offers solutions on how to implement cobots seamlessly, tackle the labor shortage, and improve crucial machine uptime.
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Flat motors with integrated encoder

The extremely compact DFA68 and DFA90 series brushless DC motors from Nanotec are now available with integrated encoder. They are particularly suitable for applications that require precise positioning in confined spaces. External rotor BLDC motors are shorter than internal rotor motors and have a lower torque ripple. The DFA90-E with a diameter of 90 mm has a rated power of 168 W at 2,000 rpm. The smaller DFA68-E with a diameter of 68 mm achieves 106 W at 3,500 rpm.
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Mechatronics made easier: Mechanical + drive

Nidec Motion Control (motors) and SDP/SI (mechanical components) have partnered to create a one-stop shop for low-voltage standard DC motors and controllers plus mechanical components for industrial automation, robotics, medical technology, safety and security, agriculture, food and beverage, vending, and more. Offerings will include pre-assemblies and kitting, from digital controllers to custom mechanical transmission solutions.
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Micro-sized high-power servo drives

The FM060-25-CM is part of a new breed of micro-sized high-power servo drives available from ADVANCED Motion Controls (50.8 mm x 25.4 mm with a height of 22.1 mm -- three units can fit within the footprint of a standard business card). Rated to output 25A continuous and 50A peak, this fully featured digital servo drive is small enough to fit in the tightest locations. It is ideally suited for mobile and portable applications such as mobile robotics, automated mobile robots (AMRs), AGVs, material handling, warehouse automation, lab automation, and more. Two lower current options (5A and 10A) are also available.
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NASA begins work to build quieter supersonic passenger jet

This is an artist's concept of a possible Low Boom Flight Demonstration Quiet Supersonic Transport (QueSST) X-plane design. The award of a preliminary design contract is the first step toward the possible return of supersonic passenger travel -- but this time quieter and more affordable. [Credits: Lockheed Martin]

 

 

 

 

The return of supersonic passenger air travel is one step closer to reality with NASA's award of a contract for the preliminary design of a "low boom" flight demonstration aircraft. This is the first in a series of X-planes' in NASA's New Aviation Horizons initiative, introduced in the agency's Fiscal Year 2017 budget.

NASA Administrator Charles Bolden announced the award at an event Feb. 29 at Ronald Reagan Washington National Airport in Arlington, VA.

"NASA is working hard to make flight greener, safer, and quieter -- all while developing aircraft that travel faster, and building an aviation system that operates more efficiently," said Bolden. "To that end, it's worth noting that it's been almost 70 years since Chuck Yeager broke the sound barrier in the Bell X-1 as part of our predecessor agency's high-speed research. Now we're continuing that supersonic X-plane legacy with this preliminary design award for a quieter supersonic jet with an aim toward passenger flight."

NASA selected a team led by Lockheed Martin Aeronautics Company of Palmdale, CA, to complete a preliminary design for Quiet Supersonic Technology (QueSST). The work will be conducted under a task order against the Basic and Applied Aerospace Research and Technology (BAART) contract at NASA's Langley Research Center in Hampton, VA.

After conducting feasibility studies and working to better understand acceptable sound levels across the country, NASA's Commercial Supersonic Technology Project asked industry teams to submit design concepts for a piloted test aircraft that can fly at supersonic speeds, creating a supersonic "heartbeat" -- a soft thump rather than the disruptive boom currently associated with supersonic flight.

"Developing, building, and flight testing a quiet supersonic X-plane is the next logical step in our path to enabling the industry's decision to open supersonic travel for the flying public," said Jaiwon Shin, associate administrator for NASA's Aeronautics Research Mission.

Lockheed Martin will receive about $20 million over 17 months for QueSST preliminary design work. The Lockheed Martin team includes subcontractors GE Aviation of Cincinnati and Tri Models Inc. of Huntington Beach, CA.

The company will develop baseline aircraft requirements and a preliminary aircraft design with specifications, and provide supporting documentation for concept formulation and planning. This documentation would be used to prepare for the detailed design, building, and testing of the QueSST jet. Performance of this preliminary design also must undergo analytical and wind tunnel validation.

In addition to design and building, this Low Boom Flight Demonstration (LBFD) phase of the project also will include validation of community response to the new, quieter supersonic design. The detailed design and building of the QueSST aircraft, conducted under the NASA Aeronautics Research Mission Directorate's Integrated Aviation Systems Program, will fall under a future contract competition.

NASA's 10-year New Aviation Horizons initiative has the ambitious goals of reducing fuel use, emissions, and noise through innovations in aircraft design that departs from the conventional tube-and-wing aircraft shape.

The New Aviation Horizons X-planes will typically be about half-scale of a production aircraft and likely are to be piloted. Design-and-build will take several years, with aircraft starting their flight campaign around 2020, depending on funding.

Source: NASA

Published March 2016

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