January 23, 2024 Volume 20 Issue 03

Motion Control News & Products

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Conveying: Drive system enables two synchronous movements with max performance

The new FAULHABER DualGear drive system optimizes automated warehouse logistics, enabling two synchronous, powerful movements in one compact unit. Combining a BX4 motor with two GPT planetary gearheads, it is ideal for storage/retrieval machines and autonomous logistics. Hall sensors ensure exact positioning for compact, efficient, and reliable performance in demanding, small-space environments.
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Decentralized drives offer seamless integration

NORD DRIVE-SYSTEMS' NORDAC LINK motor starters, plus NORDAC LINK and NORDAC FLEX variable frequency drives, feature a plug-and-play design for rapid commissioning and high system availability. With onboard AS-Interface (ASi) functionality, these modular products integrate seamlessly into existing or new systems, supporting ASi standards V2.0 and V3.0 with integrated follower profiles for connectivity.
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Non-Magnetic ball slides made in the USA

Del-Tron's USA-made, non-magnetic ball slides prevent magnetic interference in medical, semiconductor, military, and laser applications. Featuring silicon nitride ceramic bearings, titanium shafts, aluminum components, and brass fasteners, these lightweight slides come in seven sizes with travels from .5 to 12 in., providing an ideal solution for sensitive environments.
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What's new in robotic efficiency and advanced gauging systems?

Renishaw will highlight its latest solutions for maximizing robot performance and manufacturing efficiency at Automate 2026, taking place June 22-25 at McCormick Place in Chicago. Highlights will be demonstrations of its Robot Calibration System for cell recovery and in-field robot calibration, the Equator-X dual-method gauging system for high-throughput production environments, and position and motion control encoders.
Read the full article.


New Titanium servo-drive line for harsh environs

The Elmo advanced Titanium line of harsh-environment servo drives offers optimal performance with advanced power density, providing exceptional intelligent and compact servo drives that are operational within minutes. These single-axis and multi-axis servo drives, featuring top-performance multi-core processors, deliver superior productivity, Functional Safety, advanced networking, and local intelligence in a compact package for operation in extreme conditions.
Learn more.


Top Tech Tip: Automating winding, unwinding applications

From paper mills and textiles to sheet metal and plastics manufacturing, winding and unwinding mechanisms play critical parts in many industries. Jonathan Bullick from KEB America examines the automation architecture behind industrial winding applications, with particular emphasis on motor selection, variable frequency drive (VFD) configuration, and control system design. Tension, winding loads, torque speed, regen energy, bus load sharing, and more are all addressed in this excellent technical overview.
Read the KEB America article.


3D printing and 5-axis milling get highly portable

Powered by Siemens' SINUMERIK ONE CNC platform and Ingersoll's MasterPrint® industrial 3D printer, a new generation of deployable machines is bringing additive and subtractive manufacturing directly to the point of use for defense, disaster relief, and infrastructure and industry.
Read the full article.


Double the force capacity: New RSX50 linear actuators

Tolomatic's RSX50 is the newest, most powerful addition to the RSX Extreme Force electric actuator family. Delivering 50 tons of force within the compact footprint of its 25-ton predecessor, it offers industry-leading power density. Built with high-precision planetary roller screws, the RSX50 provides high-force reliability and environmental compliance, eliminating the mess and maintenance complexity of traditional hydraulic systems.
Get all the specs from Tolomatic.


Integrated drive system for next-gen robotics and human-like motions

Engineered for modern robotics, the BXI is FAULHABER's most powerful integrated drive. Delivering up to 20 Nm of torque, it ensures dynamic, precise control. This compact unit combines a motor, stepped planetary gearhead, and high-res encoder into one functional system. Its strength lies in systematic integration, offering maximum performance in minimal space -- ideal for humanoid robot joints and demanding applications.
Get all the specs from FAULHABER.


Important Qs about linear motor actuators that design engineers should ask

Many design engineers overestimate how accurate traditional motors and actuators stay over long travel runs, mistakenly believing that if the solution works well for short runs, it will work equally well on long ones. Do you know what type of actuator you should use for your application? Patrick Lehr, Product Manager, Precision Mechanics at Parker Hannifin, has some really good tips for you.
Read the full article.


Cobots get 4 m tall with the 8th-Axis Vertical Robot Transfer Unit

Designed to optimize industrial processes across various sectors, the 8th-Axis Vertical Robot Transfer Unit (RTU-V) from Bishop-Wisecarver features a vertical travel length of up to 4 m, enabling a single small robot or cobot to cover large areas traditionally requiring multiple robots. This innovation not only boosts productivity but also offers considerable cost savings, making it an ideal solution for industries such as logistics, manufacturing, agriculture, packaging, and more. Extended reach allows robots to perform tasks on oversized workpieces, such as rocket tubes, boat hulls, and aerospace structures, with ease.
View the video.


UR AI Trainer for robotics: First lab-to-factory AI model trainer

Universal Robots unveiled the UR AI Trainer last week. Developed in collaboration with Scale AI, the AI Trainer marks a tectonic shift as robots move from pre-programmed applications to fully AI-driven tasks. These systems are powered by robust data generated in AI training cells where robots imitate humans.
Read the full article.


BLDC motors with advanced safety features built in

Dunker-motoren has built advanced safety functions directly into its BG75 and BG95 BLDC motors, so you no longer need a separate safety controller or complex wiring. This means faster installation, lower costs, and simpler designs. With features such as safe stop and speed control, plus secure digital communication, dSafe motors are ready for automation, robotics, and mobile systems worldwide. It's safety that scales with your future.
Learn more.


Mobile robotic platform with contactless charging

MAXOLU-TION, an SEW-EURODRIVE company, has introduced the modular Mobile Robot Platform 1600 (MR P1600). It is designed to move heavy loads such as pallets through factories and warehouses, with less manual handling and more consistent material flow. The platform supports configurable load-handling options, including conveyor transfer, lift, drive-under, and precise docking, using standardized material transfer attachments or custom-engineered load handling. Max load is 1,600 kg.
Learn more.


Configurable modular precision linear stages

PI's Modular Precision Linear (MPL) stage family is a configurable platform that simplifies specifying and integrating high-precision linear positioning systems. Engineers can select mechanical, drive, and feedback options online, creating application-specific stages without the cost of fixed designs. The MPL series offers 50- to 300-mm travel ranges and servo or stepper motor options -- with linear motors planned for future release -- while maintaining high precision, stiffness, and reliability.
Learn more.


Solid-state lithium metal battery charges in minutes, lasts for thousands of cycles

By Leah Burrows, Harvard John A. Paulson School of Engineering and Applied Sciences

Researchers from the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) have developed a new lithium metal battery that can be charged and discharged at least 6,000 times -- more than any other pouch battery cell -- and can be recharged in a matter of minutes.

The research not only describes a new way to make solid-state batteries with a lithium metal anode, but also offers new understanding into the materials used for these potentially revolutionary batteries.

The research is published in Nature Materials.

"Lithium metal anode batteries are considered the holy grail of batteries because they have ten times the capacity of commercial graphite anodes and could drastically increase the driving distance of electric vehicles," said Xin Li, associate professor of Materials Science at SEAS and senior author of the paper.

One of the biggest challenges in the design of these batteries is the formation of dendrites on the surface of the anode. These structures grow like roots into the electrolyte and pierce the barrier separating the anode and cathode, causing the battery to short or even catch fire.

These dendrites form when lithium ions move from the cathode to the anode during charging, attaching to the surface of the anode in a process called plating. Plating on the anode creates an uneven, non-homogeneous surface, like plaque on teeth, and allows dendrites to take root. When discharged, that plaque-like coating needs to be stripped from the anode. When plating is uneven, the stripping process can be slow and result in potholes that induce even more uneven plating in the next charge.

In 2021, Li and his team offered one way to deal with dendrites by designing a multilayer battery that sandwiched different materials of varying stabilities between the anode and cathode. This multilayer, multi-material design prevented the penetration of lithium dendrites not by stopping them altogether, but rather by controlling and containing them.

In this new research, Li and his team stop dendrites from forming by using micron-sized silicon particles in the anode to constrict the lithiation reaction and facilitate homogeneous plating of a thick layer of lithium metal.

In this design, when lithium ions move from the cathode to the anode during charging, the lithiation reaction is constricted at the shallow surface and the ions attach to the surface of the silicon particle but don't penetrate further. This is markedly different from the chemistry of liquid lithium-ion batteries in which the lithium ions penetrate through deep lithiation reaction and ultimately destroy silicon particles in the anode.

However, in a solid state battery, the ions on the surface of the silicon are constricted and undergo the dynamic process of lithiation to form lithium metal plating around the core of silicon.

"In our design, lithium metal gets wrapped around the silicon particle, like a hard chocolate shell around a hazelnut core in a chocolate truffle," said Li.

These coated particles create a homogenous surface across which the current density is evenly distributed, preventing the growth of dendrites. And, because plating and stripping can happen quickly on an even surface, the battery can recharge in only about 10 minutes.

The researchers built a postage stamp-sized pouch cell version of the battery, which is 10 to 20 times larger than the coin cell made in most university labs. The battery retained 80% of its capacity after 6,000 cycles, outperforming other pouch cell batteries on the market today. The technology has been licensed through Harvard Office of Technology Development to Adden Energy, a Harvard spinoff company cofounded by Li and three Harvard alumni. The company has scaled up the technology to build a smart phone-sized pouch cell battery.

Li and his team also characterized the properties that allow silicon to constrict the diffusion of lithium to facilitate the dynamic process favoring homogeneous plating of thick lithium. They then defined a unique property descriptor to describe such a process and computed it for all known inorganic materials. In doing so, the team revealed dozens of other materials that could potentially yield similar performance.

"Previous research had found that other materials, including silver, could serve as good materials at the anode for solid-state batteries," said Li. "Our research explains one possible underlying mechanism of the process and provides a pathway to identify new materials for battery design."

Published January 2024

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