September 20, 2022 Volume 18 Issue 35

Motion Control News & Products

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Brushless slotted flat motor weighs only 15 grams

The 20ECF brushless slotted flat motor is the latest motor to join Portescap's flat motor line. The motor's 19-mm rotor diameter is notably smaller than the 20-mm diameter of competitive solutions. At 15 grams, the 20ECF provides a mass savings of at least 30% when compared to competing motion solutions. The motor's design optimization also helps it achieve a 50% improved motor regulation factor relative to standard available solutions. Applications include surgical and service robotics, lab automation, premium tattoo machines, electric grippers, LiDar, and pumps.
Learn more.


Efficient, reliable and flexible robot gripper optimizes machine tending operations

To continuously deliver high-quality results to its customers, WEFAG AG not only invested in new CNC machines, but also deployed a collaborative application with the 3FG15 gripper from OnRobot to tend the CNC machines. This makes it possible for the Swiss family-owned company to meet extremely short delivery times and smaller batch sizes confidently, while also reducing the workload of employees, who can now focus on more demanding tasks.
Watch how the 3FG15 delivered an ROI in 2 months.
Learn more: How to automate machine tending.


Differences between types of multi-axis positioning stages -- parallel vs. stacked

According to the experts at PI (Physik Instrumente), stacking individual motorized stages is a fine approach for assemblies of just a few axes, but as applications become more complex a 6-axis stage design based on parallel kinematics could be the best option. Learn about stiffness, inconsistent dynamics, size and weight fragility, and even cabling considerations for multi-axis applications. Lots of good info here.
Read this informative PI blog.


Universal Robots' new UR20 Cobot makes its U.S. debut at IMTS 2022

Attendees at North America's leading machine tool show (IMTS) are experiencing how the all-new collaborative, industrial cobot from Universal Robots delivers the longest reach and payload in its class, offering the ability to automate even more hard-to-staff tasks in a market struggling to hire. Also learn about cobot grippers, machine tending, robo welding, and more.
Read the full article.


Miniature voice coil servo motor with 1-micron resolution

The miniature GVCM-016-019-01M Linear Voice Coil Servo Motor from Moticont is smaller in diameter than a dime and features a high force-to-size ratio of 1.5 N (5.3 oz) continuous force and 4.6 N (16.6 oz) of peak force. These brushless mini linear servo motors are clean, quiet, and feature high acceleration/deceleration, high speed, high reliability, and cog-free linear motion. An ideal choice for haptic feedback, pipetting in medical devices, machining and drilling, scanners, laser beam steering, sorting, assembly, and more. Can also be a low-cost replacement for pneumatic linear actuators.
Learn more.


MAHLE claims new EV motor is most durable -- can run indefinitely with high performance

Automotive supplier MAHLE says it has developed "the most durable electric motor available" for electric vehicle (EV) applications. Unique to the market, the traction motor -- with a continuous output of more than 90% of its peak output -- can run indefinitely with high performance thanks to a new cooling concept.
Read the full article.


What are Crossed Roller Bearings?

Learn all about HIWIN Crossed Roller Bearings that are three to four times more rigid than standard bearing solutions and are capable of handling loads in the axial, radial, and moment directions. They consist of an outer ring, an inner ring, and a plurality of rollers and spacers. The roller lies between the inner and outer ring with the spacers placed between the rollers to prevent the mutual friction between them, thereby decreasing the torque resistance for rotation. Many options are available depending on the level of rigidity needed.
Learn more.


Compact electrically controlled hydraulic actuator

Bosch Rexroth has expanded its range of standardized self-contained actuators by adding the CytroMotion system solution. With the help of the new compact actuator, linear movements involving forces up to 110 kN can be achieved in a range of machines and systems in smaller spaces -- more efficiently and more sustainably. These benefits can be seen over the entire life cycle. Thanks to fully electric control, CytroMotion makes engineering and commissioning easier. The efficient, power-on-demand drive and the maintenance-free, hermetically sealed design also minimize operating costs.
Learn more.


Belt-driven actuators for harsh environments

Rollon's newly enhanced Plus System lineup of belt-driven linear actuators can be integrated seamlessly with industrial machines. Combining sturdy construction, protective features (sealed), and high-performance characteristics for load, moment control, speed, and acceleration, the Plus System family features an anodized aluminum structure and steel reinforced driving belt. Three types available: Plus System ELM completely enclosed unit, Plus System ROBOT for multi-axis or SCARA robots, and Plus System SC for vertical motion in gantry applications.
Learn more.


Linear positioning and motion systems at IMTS 2022

SCHNEE-BERGER Linear Technology will spotlight its precision positioning and motion systems at IMTS 2022 in September. On display will be a fully functioning demo of a complete linear motion technology system featuring the company's leading and most innovative linear motion components. When linear tech components are designed to work together to create the most effective solution for machine movement, OEMs can accelerate design and manufacturing, reduce assembly time and labor, and achieve a lower TCO.
Learn more.


Micro-sized FlexPro servo drive

ADVANCED Motion Controls' new 60-A continuous FlexPro servo drive model FM060-60C-RM is the third "machine embedded" version in this power range, adding RS-485/232 communication to the previously released EtherCAT and CANopen versions. This drive can operate at its 60-A peak rating continuously with no need for current foldback -- impressive because the micro-package size means up to four units can fit within the footprint of a business card. Applications include cobots, AMRs, AGVs, portable devices, lab and warehouse automation, military equipment, and more.
Learn more.


NSK's new Active Casters help robots move effortlessly

NSK has developed new Active Caster technology for service robots and mobility drive applications. The compact, electric-powered turning unit provides both drive and steering functions based on the difference in rotation between two motors. The developers say it generates less vibration compared to an omnidirectional mobility unit using Mecanum wheels.
Read this informative NSK article.


Hybrid stepper motor with 8-pin integrated connector

Lin Engineering's NEMA 23 (57-mm) hybrid stepper motor can be ordered with an 8-pin integrated connector that allows for multiple connection options. Standard and customized windings and shaft options are available to match your performance requirements, as well as customizable leads and wire harness. This high-volume-availability motor may be the perfect drop-in replacement for your designs if you are experiencing supply chain issues.
Learn more.


IronHorse jet pump and stainless steel motors

Automation-Direct has added the new, economical IronHorse MTRJ series of jet pump motors to their AC motor lineup. They come in a TEFC enclosure with a 56J frame that has a threaded shaft for direct connection to a jet pump, and are available in 120/230 VAC from 1/3 to 2 hp and in 208-230/460 VAC from 1/3 to 3 hp at 3,600 rpm. AutomationDirect has also added the MTS series of IronHorse motors that offer premium efficiency (EISA compliant) and come with an IP69K-rated stainless steel construction that can survive the harshest of environments. They are available in sizes from 1/3 to 20 hp in 208-230/480 VAC 3-phase and in speeds of 1,200, 1,800, and 3,600 rpm.
Learn more.


Machine learning eliminates cogging for linear motors

The highly dynamic AL8000 linear motors from Beckhoff now meet even greater requirements for accuracy and synchronization with the new TwinCAT Cogging Compensation software, which compensates for cogging forces. Cogging forces in linear motors are caused by the magnetic attraction between the iron core in the primary part and the permanent magnets in the secondary part. AL8000 linear motors are particularly suitable for high-precision applications such as milling machines or laser cutting machines.
Learn more.


GE is first in world to test high-power, high-voltage hybrid electric components in altitude conditions

GE recently announced it completed the world's first test of a megawatt (MW)-class and multi-kilovolt (kV) hybrid electric propulsion system in altitude conditions that simulate single-aisle commercial flight. The announcement was made at the Farnborough International Airshow just south of London at the end of July.

The test of the high-power, high-voltage system -- including electric motor/generators, power converters, power transmission, and power control systems -- successfully demonstrated performance and operation of the components in a replicated flight environment. This helps validate the architecture of the hybrid electric propulsion systems GE is developing. It's also an important, necessary step in GE's technology programs with NASA to develop a hybrid electric propulsion system for flight tests later this decade and for entry into service in the mid-2030s.

The altitude integration test of the system began in June 2021 and was completed earlier this year at NASA's Electric Aircraft Testbed (NEAT) facility in Sandusky, OH. To represent the right and left engine sides of an aircraft, two sets of a hybrid electric system were operated in conditions up to 45,000 ft, simulating the electrical loads required to help optimize the engines and propel and power an aircraft.

"We're making aviation history by developing the technology to help make hybrid electric flight possible for everyday commercial air travel," said Mohamed Ali, vice president and general manager of engineering for GE Aerospace. "This is one of many milestones in our journey with NASA towards demonstrating a hybrid electric aircraft engine system for a more sustainable future of flight."

The NEAT facility where testing took place is a NASA reconfigurable testbed used to design, develop, assemble, and test electric aircraft power systems.

"NASA's unique NEAT facility is the only testing location capable of simultaneously providing both high-electric-power and high-altitude conditions in an area large enough to fit an entire electric powertrain, and we are proud to see this test with GE come to a successful conclusion. This facility has become highly sought after by GE and others across the aviation community, and it is critical to supporting the agency's goal of developing technologies that will enable and support future climate change adaptation initiatives," said Bob Pearce, associate administrator for NASA's Aeronautics Mission Research Directorate.

"At NEAT, we are able to test a high-voltage powertrain system in flight altitude conditions without leaving the ground, thereby reducing major safety risks in a timely manner. With the ground testing completed, we are now well positioned to move to the next phase of our agreement with GE, an actual electric aircraft flight demonstration," Pearce added.

About the altitude integration test
Components were tested independently and as an integrated system. Additionally, multiple operational modes were evaluated, including power transfer from side to side, power assist to a simulated engine, and aircraft power generation. The implementation of energy storage was also simulated.

MWs measure electrical power and kVs measure the difference in electrical potential between two points, equivalent to the pressure used to drive fluid through a pipe. A kV-class system enables high efficiency and specific power. Successfully testing a kV system in altitude conditions is significant because the interaction of voltage and the environment is different at higher altitudes than on the ground. kV-class systems are significantly more difficult to manage at altitude.

What's next for hybrid electric flight
Future tests will continue as part of the Electrified Powertrain Flight Demonstration (EPFD) project that was announced by NASA in September 2021, including testing of the hybrid electric system connected to GE's CT7 turboprop engines. Eventually, this will lead to a flight test later this decade of the hybrid electric system on a CT7-powered Saab 340B plane.

Boeing is partnering with GE to support the flight tests for EPFD. Boeing (and its subsidiary Aurora Flight Sciences) is providing the aircraft, aircraft modification, aircraft integration, and flight-testing services. That work includes nacelle manufacturing, flight deck interface design and software, aircraft-level performance analysis, and systems integration.

Source: GE

Published September 2022

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