August 16, 2022 Volume 18 Issue 31

Motion Control News & Products

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New rotary microstage includes built-in controller

The new M3-RS-U2-4.5-360 Rotary Smart Stage from New Scale Technologies is a miniature positioning module that simplifies the task of embedding high-precision rotary motion into scientific and industrial instruments. The latest addition to the M3 Smart Stage family provides point-to-point angular positioning with closed-loop resolution better than 0.022 degrees. M3 Smart Stages integrate piezoelectric motors, position sensors, and built-in controllers in compact modules that accept direct digital input from a system processor.
Learn more.


New high-performance hollow shaft gear unit for heavy-duty applications

Harmonic Drive has released its HPF series of hollow shaft gear units designed for heavy-duty industrial applications. These advanced gear units offer high torque outputs and flexible installation options, and they provide exceptional torque density and positional accuracy. Industrial applications include robotics, packaging, and material handling.
Learn more and get all the specs.


Totally new! Hybrid stepper and PM motor

The Hybrid-PM-Mix (HPM) from Lin Engineering is the first motor of its kind, combining the stator of a hybrid stepper and the rotor of a PM motor in the form factor of a high-speed BLDC. The result is a motor that behaves like a typical high-speed BLDC with the added benefits of hybrid steppers -- precise position control and position holding -- with low noise and vibration too. The 1330 Series is a small motor with a frame size of just 13 mm, which is perfect for small applications with minimal space.
Find out all the specs.


New magnetic tracks for linear motors -- more force with no redesign

The MWD+ is a new family of magnetic tracks from ETEL equipped with stronger magnets. These tracks are compatible with any existing ETEL LMG and LMS linear motor, enabling an average of 15% higher continuous and peak force compared to existing MWD products. Benefits include higher force density per unit volume, which allows users to improve the overall duty cycle or run a given duty cycle at lower temperatures.
Learn more about ETEL linear motors.


maxon adds dynamism to robotic drives

Innovative motor concepts are the answer to growing market requirements for dynamic response, compactness, and power density. With the EC frameless DT, maxon presents a solution that really packs a punch. The DT50 with matching encoder is the precursor of a new product family developed specifically for dynamic movements like those in robotics. The brushless motor with its frameless concept can be easily integrated into a wide range of applications by design engineers in applications where speeds can change in an instant. When installed, the EC frameless DT50 effortlessly reaches a nominal torque of over 500 mNm at a nominal speed of 4,000 rpm.
Learn more.


Better conveyors for automotive assembly lines

The Torque Arm Conveyor Drive is a more energy-efficient and maintenance-friendly replacement for the legacy "Floating Frame" conveyor drives used in many automotive assembly lines. Developed by OCC Systems, it features a custom-built gearbox solution with an Overhead Conveyor Drive gear unit from NORD DRIVESYSTEMS. This new drive concept contains far fewer parts, has a modular and maintenance-friendly construction, and comes with a built-in back-up system.
Read the full article.


Robot handles precision masking tape application for aerospace

Engineers from Aerobotix and FerRobotics have developed an impressive End of Arm Tooling system that provides smooth masking on parts varying in shape and puts down precise tape lines where the customer needs them -- even on intricate curvy paths. You've got to see it in action.
Read the full article.


Linear robots are now even more versatile

Bosch Rexroth has expanded its portfolio of linear robots (eight different axis combinations with 68 sizes!) for various applications in factory automation. The much wider range of working areas and loads makes the Cartesian subsystems also suitable for applications like battery handling or intralogistics. Predefined axis combinations make for quick and easy sizing and selection. Configure and finalize online and order as preassembled subsystems -- optionally with controllers. Each multi-axis system is also available as a Smart Function Kit for handling or dispensing. Preinstalled software allows for fast commissioning and intuitive programming.
Learn more about Bosch Rexroth smart mechatronic systems.


Selecting linear actuators for robotics

Nick Novotny over at Nook Industries has put together a handy and very useful short guide on selecting linear actuators for robotic applications. Besides addressing the primary considerations, he also explains motor types, linear actuator types, modularity, and advantages and disadvantages.
Read this informative Nook Industries blog.


5 key considerations for selecting a propulsion motor

Josh Jennings, mobile servo motor and drive applications engineer for Parker Hannifin's Hydraulic Pump and Power Systems Division, runs through the key factors to consider for a vehicle electrification project, including how the motor is cooled, its speed range, flexibility, efficiency, and reliability. Solid basic information.
Read the full Parker blog.


New mini planetary gearmotors

New PH Series Mini Planetary Gearmotors from Applied Motion Products are used with small step motors in NEMA 8, 11, and 14 frame sizes. These gearmotors are used in applications where space is critical. Small motors usually don't produce enough torque for demanding applications. Mini Planetary Gearmotors are an ideal solution. They offer an increase in torque and better inertia matching without breaking the budget.
Learn more and see all the options offered by Electromate.


New cobot welders with extended range unveiled at FABTECH 2022

Universal Robots has grown its welding application segment more than 80% this year as partners develop new capabilities for the pioneering cobot welders. At FABTECH last week, Universal Robots' booth showcased new solutions from Vectis Automation and Hirebotics, enabling the weldment of larger and more complex parts. Attendees also experienced Precision Cobotics' automated MECCO laser-marking solution with Apera AI bin picking, laser welding with Cobot Systems, metal deburring with Kane Robotics, along with the new UR20 cobot in a machine-tending application.
Learn about the new welding options and other UR FABTECH releases.


New! Multi-axis gantry attachment kits extend your working envelope

Multi-axis linear actuator assemblies from Bishop-Wisecarver extend the working envelope of automated motion systems and provide for more complex motion. ECO60 Gantry Kits create reliable and easy-to-assemble connections between ECO60 Linear Actuators. Benefits include: saving design time without sacrificing design freedom, easy ordering with single-part-number kits, and fast and simple assembly and installation. All multi-axis kits are made from aluminum with black anodize and stainless-steel hardware.
Learn more.


Robots handle post processing for metal AM parts and components

The NetShape Robot from Rivelin Robotics provides an automated solution for metal support removal and targeted finishing to meet the standards of mission-critical industries. Driven by the powerful NetShape control software, both machine learning and traditional deterministic control theory are used to optimize the quality and repeatability of the work. The result is an automated support-removal solution that reduces defects by 90%, exhibits a 10-fold reduction in operational costs, and eliminates human risk and variability.
Learn more.


Flat external rotor with encoder

The DF45 brushless DC motors from Nanotec are now available with an integrated encoder. The new flat motors with a diameter of only 45 mm are ideal for applications that require precise positioning in confined spaces such as AGV wheel drives, access control systems, and door drives. The two-channel encoder has a resolution of 1,024 CPR and provides additional Hall signals for commutation. The difference in length between the standard motor and the encoder version is only 2 mm, as the encoder has been completely integrated. The DF45-E has a rated power of 65 W at a rated speed of 4,840 rpm. Custom windings or shafts are also available.
Learn more.


Researchers develop new faster-charging hydrogen fuel cell

Researchers from the University of Technology Sydney (UTS) and Queensland University of Technology (QUT) in Australia have developed a new method to improve solid-state hydrogen fuel cell charging times.

Hydrogen is gaining significant attention as an efficient way to store "green energy" from renewables such as wind and solar. Compressed gas is the most common form of hydrogen storage. However, it can also be stored in a liquid or solid state.

Dr. Saidul Islam, from the University of Technology Sydney, said solid hydrogen storage, and in particular metal hydride, is attracting interest because it is safer, more compact, and lower cost than compressed gas or liquid, and it can reversibly absorb and release hydrogen.

"Metal hydride hydrogen storage technology is ideal for onsite hydrogen production from renewable electrolysis. It can store the hydrogen for extended periods and once needed, it can be converted as gas or a form of thermal or electric energy when converted through a fuel cell," he said.

"Applications include hydrogen compressors, rechargeable batteries, heat pumps and heat storage, isotope separation, and hydrogen purification. It can also be used to store hydrogen in space, to be used in satellites and other 'green' space technology," he said.

However, a problem with metal hydride for hydrogen energy storage has been its low thermal conductivity, which leads to slow charging and discharging times.

To address this, the researchers developed a new method to improve solid-state hydrogen charging and discharging times. The study, "Design optimization of a magnesium-based metal hydride hydrogen energy storage system," was recently published in the journal Scientific Reports.

Comparison of hydrogen absorption concentration with different designs. [Image credit: Puchanee Larpruenrudee]

 

 

First author Puchanee Larpruenrudee, a PhD candidate in the UTS School of Mechanical and Mechatronic Engineering, said faster heat removal from the solid fuel cell results in faster charging times.

"Several internal heat exchangers have been designed for use with metal hydride hydrogen storage. These include straight tubes, helical coil or spiral tubes, U-shape tubes, and fins. Using a helical coil significantly improves heat and mass transfer inside the storage.

"This is due to the secondary circulation and having more surface area for heat removal from the metal hydride powder to the cooling fluid. Our study further developed a helical coil to increase heat transfer performance."

The researchers developed a semi-cylindrical coil as an internal heat exchanger, which significantly improved heat transfer performance. The hydrogen charging time was reduced by 59% when using the new semi-cylindrical coil compared to a traditional helical coil heat exchanger.

They are now working on the numerical simulation of the hydrogen desorption process, and continuing to improve absorption times. The semi-cylindrical coil heat exchanger will be further developed for this purpose.

Finally, the researchers aim to develop a new design for hydrogen energy storage that will combine other types of heat exchangers. They hope to also work with industry partners to investigate real tank performance based on the new heat exchanger.

Source: University of Technology Sydney

Published August 2022

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