June 16, 2015 Volume 11 Issue 23

Motion Control News & Products

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Overhung load adaptors provide load support and contamination protection

Overhung load adaptors (OHLA) provide both overhung radial and axial load support to protect electrified mobile equipment motors from heavy application loads, extending the lifetime of the motor and alleviating the cost of downtime both from maintenance costs and loss of production. They seal out dirt, grime, and other contaminants too. Zero-Max OHLAs are available in an extensive offering of standard models (including Extra-Duty options) for typical applications or customized designs.
Learn more.

Why choose electric for linear actuators?

Tolomatic has been delivering a new type of linear motion technology that is giving hydraulics a run for its money. Learn the benefits of electric linear motion systems, the iceberg principle showing total cost of ownership, critical parameters of sizing, and conversion tips.
Get this informative e-book. (No registration required)

New AC hypoid inverter-duty gearmotors

Bodine Electric Company introduces 12 new AC inverter-duty hypoid hollow shaft gearmotors. These type 42R-25H2 and 42R-30H3 drives combine an all-new AC inverter-duty, 230/460-VAC motor with two hypoid gearheads. When used with an AC inverter (VFD) control, these units deliver maintenance-free and reliable high-torque output. They are ideal for conveyors, gates, packaging, and other industrial automation equipment that demands both high torque and low power consumption from the driving gearmotor.
Learn more.

Next-gen warehouse automation: Siemens, Universal Robots, and Zivid partner up

Universal Robots, Siemens, and Zivid have created a new solution combining UR's cobot arms with Siemens' SIMATIC Robot Pick AI software and Zivid's 3D sensors to create a deep-learning picking solution for warehouse automation and intra-logistics fulfillment. It works regardless of object shape, size, opacity, or transparency and is a significant leap in solving the complex challenges faced by the logistics and e-commerce sectors.
Read the full article.

Innovative DuoDrive gear and motor unit is UL/CSA certified

The DuoDrive integrated gear unit and motor from NORD DRIVE-SYSTEMS is a compact, high-efficiency solution engineered for users in the fields of intralogistics, pharmaceutical, and the food and beverage industries. This drive combines a IE5+ synchronous motor and single-stage helical gear unit into one compact housing with a smooth, easy-to-clean surface. It has a system efficiency up to 92% and is available in two case sizes with a power range of 0.5 to 4.0 hp.
Learn more.

BLDC flat motor with high output torque and speed reduction

Portescap's 60ECF brushless DC slotted flat motor is the newest frame size to join its flat motor portfolio. This 60-mm BLDC motor features a 38.2-mm body length and an outer-rotor slotted configuration with an open-body design, allowing it to deliver improved heat management in a compact package. Combined with Portescap gearheads, it delivers extremely high output torque and speed reduction. Available in both sensored and sensorless options. A great choice for applications such as electric grippers and exoskeletons, eVTOLs, and surgical robots.
Learn more and view all the specs.

Application story: Complete gearbox and coupling assembly for actuator system

Learn how GAM engineers not only sized and selected the appropriate gear reducers and couplings required to drive two ball screws in unison using a single motor, but how they also designed the mounting adapters necessary to complete the system. One-stop shopping eliminated unnecessary components and resulted in a 15% reduction in system cost.
Read this informative GAM blog.

Next-gen motor for pump and fan applications

The next evolution of the award-winning Aircore EC motor from Infinitum is a high-efficiency system designed to power commercial and industrial applications such as HVAC fans, pumps, and data centers with less energy consumption, reduced emissions, and reduced waste. It features an integrated variable frequency drive and delivers upward of 93% system efficiency, as well as class-leading power and torque density in a low-footprint package that is 20% lighter than the previous version. Four sizes available.
Learn more.

Telescoping linear actuators for space-constrained applications

Rollon's new TLS telescoping linear actuators enable long stroke lengths with minimal closed lengths, which is especially good for applications with minimal vertical clearance. These actuators integrate seamlessly into multi-axis systems and are available in two- or three-stage versions. Equipped with a built-in automated lubrication system, the TLS Series features a synchronized drive system, requiring only a single motor to achieve motion. Four sizes (100, 230, 280, and 360) with up to 3,000-mm stroke length.
Learn more.

Competitively priced long-stroke parallel gripper

The DHPL from Festo is a new generation of pneumatic long-stroke grippers that offers a host of advantages for high-load and high-torque applications. It is interchangeable with competitive long-stroke grippers and provides the added benefits of lighter weight, higher precision, and no maintenance. It is ideal for gripping larger items, including stacking boxes, gripping shaped parts, and keeping bags open. It has high repetition accuracy due to three rugged guide rods and a rack-and-pinion design.
Learn more.

Extend your range of motion: Controllers for mini motors

FAULHABER has added another extremely compact Motion Controller without housing to its product range. The new MC3603 controller is ideal for integration in equipment manufacturing and medical tech applications. With 36 V and 3 A (peak current 9 A), it covers the power range up to 100 W and is suitable for DC motors with encoder, brushless drives, or linear motors.
Learn more.

When is a frameless brushless DC motor the right choice?

Frameless BLDC motors fit easily into small, compact machines that require high precision, high torque, and high efficiency, such as robotic applications where a mix of low weight and inertia is critical. Learn from the experts at SDP/SI how these motors can replace heavier, less efficient hydraulic components by decreasing operating and maintenance costs. These motors are also more environmentally friendly than others.
View the video.

Tiny and smart: Step motor with closed-loop control

Nanotec's new PD1-C step motor features an integrated controller and absolute encoder with closed-loop control. With a flange size of merely 28 mm (NEMA 11), this compact motor reaches a max holding torque of 18 Ncm and a peak current of 3 A. Three motor versions are available: IP20 protection, IP65 protection, and a motor with open housing that can be modified with custom connectors. Ideal for applications with space constraints, effectively reducing both wiring complexity and installation costs.
Learn more.

Closed loop steppers drive new motion control applications

According to the motion experts at Performance Motion Devices, when it comes to step motors, the drive technique called closed loop stepper is making everything old new again and driving a burst of interest in the use of two-phase step motors. It's "winning back machine designers who may have relegated step motors to the category of low cost but low performance."
Read this informative Performance Motion Devices article.

Intelligent compact drives with extended fieldbus options

The intelligent PD6 compact drives from Nanotec are now available with Profinet and EtherNet/IP. They combine motor, controller, and encoder in a space-saving package. With its 80-mm flange and a rated power of 942 W, the PD6-EB is the most powerful brushless DC motor of this product family. The stepper motor version has an 86-mm flange (NEMA 34) and a holding torque up to 10 Nm. Features include acceleration feed forward and jerk-limited ramps. Reduced installation time and wiring make the PD6 series a highly profitable choice for machine tools, packaging machines, or conveyor belts.
Learn more.

Mars in 37 days: Research on fusion engine to power space-travel hot rod is AIAA Best Paper

By Jim Steele, UAH

You could call a fusion engine a space-travel hot rod.

A 2014 paper that reports on developments in pulsed fusion propulsion that could rapidly propel U.S. manned flights to Mars has been named by the American Institute of Astronautics and Aeronautics (AIAA) Nuclear and Future Flight Propulsion Technical Committee as an AIAA Best Paper.

UAH's Dr. Jason Cassibry, associate professor of mechanical and aerospace engineering, UAH, is co-author of an award-winning paper on fusion engine space tech. [Photo: Michael Mercier, UAH]



Entitled "Developing the Pulsed Fission-Fusion (PuFF) Engine,"* the paper's lead author is Dr. Robert B. Adams, who works in NASA's Propulsion Research and Technology Branch and received his master's degree in general engineering in 2000 and his doctoral degree in mechanical engineering in 2008 from The University of Alabama in Huntsville (UAH).

A co-author is UAH's Dr. Jason Cassibry, an associate professor of mechanical and aerospace engineering who is guiding toward completion of a repurposed nuclear weapons effects simulator called Charger-1 at UAH's Aerophysics Research Center on Redstone Arsenal so it can perform fundamental research on fusion propulsion.

So, how fast is this hot rod?

"We have developed an understanding of what propulsion systems enable missions to Mars in 90 days or less, and to otherwise reduce the trip times to the outer planets and beyond by a factor of three," Dr. Cassibry says. "Further, we are exploring specific systems which will not break the bank or require more than one to three flights on the Space Launch System or similar other heavy-lift vehicle to assemble the vehicle in space. This paper discusses a very promising path for achieving these goals."

Dr. Adams originated the idea of a fission/fusion hybrid approach for the Phase I NASA Innovative Advanced Concepts (NIAC) proposal and performed much of the vehicle design and mission analysis work.

"I did conceive of using a fission trigger to ignite a fusion plasma in the context of a propulsion system," Dr. Adams says. The concept traces its roots to Dr. Freeman Dyson and the Orion Project, a 1957-61 effort that explored using nuclear pulse propulsion for space flight.

"I championed incorporating this two-stage process with a z-pinch," says Dr. Adams. A z-pinch, or zeta pinch, is a plasma confinement system that uses electrical current along the z-axis on a three-dimensional graph to create a magnetic field to compress the plasma to release energy.

"The team has generated several other ideas that have been incorporated into the concept," Dr. Adams says. "I'd expect there will be many more ideas from the group before this becomes a reality."

The paper served as a status report and summary of funded work as of July 2014 on the Pulsed Fission Fusion (PuFF) propulsion system, Dr. Cassibry says. "PuFF is a nuclear propulsion approach in which the fuel is compressed by high currents."

In the PuFF system, the electricity compresses a target of deuterium and tritium in a column surrounded concentrically by a liner of depleted uranium. The paper includes a power balance calculation that shows that the presence of a depleted uranium liner makes the hybrid fuel achieve break-even with much less energy input than when using a pure fusion target.

"3D modeling was performed to show that pulsed expansion of these targets against a simple hemispherical nozzle could be over 70 percent efficient," Dr. Cassibry says. "Vehicle design and mission analysis showed concepts which could reach Mars in 37 days, and 1,000 astronomical unit (AU) interstellar precursor distances in 36 years."

An AU is equivalent to the distance between the sun and the Earth.

"I see Dr. Cassibry and I as partners leading this team working on fusion propulsion," says Dr. Adams. "He knows much more about plasma physics and computational fluid dynamics, where I bring nuclear engineering and mission analysis to the table. Several others on the team are from UAH and NASA and have expertise in high-power physics, plasma instabilities, and other topics."

*[Editor's note: You need a subscription to access the paper on the AIAA site, but you can view a version of the paper (Phase I Report) through NASA here.]

Published June 2015

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