April 11, 2017 Volume 13 Issue 14

Motion Control News & Products

Designfax weekly eMagazine

Subscribe Today!
image of Designfax newsletter

Buyers Guide

Archives

View Archives

Partners

Manufacturing Center
Product Spotlight

Modern Applications News
Metalworking Ideas For
Today's Job Shops

Tooling and Production
Strategies for large
metalworking plants

Mobility Tech Ideas: Scissor lift for UTVs

The UTX Scissor lift from Innovative Equipment is designed to be easily fitted and removed from almost any utility vehicle (UTV) in approximately 3 minutes without any heavy lifting. It provides the user with a working height of 18 to 19 ft on nearly any terrain. It can be leveled on slopes up to 12 deg. It has a lifting capacity of 500 to 600 lb and enables users to take a scissor lift "where no scissor lift has gone before." Stability has been tested to five times the ANSI requirements. It also has safety features that will not allow it to be used in unsafe conditions.
See it in action.


Become a robot programmer in 87 minutes!

Learning how to set up and program a collaborative robot -- or cobot -- no longer depends on real-life access to a robot or a training class. Now everybody with a desire to learn the concepts of cobots can log in to the Universal Robots Academy and get the introduction necessary to master basic programming skills. Become a master of the cobots! (That's a pretty sweet title.)
Click here to learn more.


Multi-axis robotic controller

Aerotech’s HEX RC is a 6-axis motion controller ideal for controlling robotic systems like hexapods. It is 4U rack-mountable and compatible with the Automation 3200 (A3200) motion platform. A high-performance processor provides the intense computing power needed to run up to 32 axes, perform complex, synchronized motion trajectories, manipulate I/O, and collect data at high speeds. This unit features 6 axes of drives capable of controlling any combination of brush, brushless, or stepper motors (both current loop and servo loop closures). An optional 6-axis jog pendant permits easy, manual control of the positioning system.
Click here to learn more.


Single-rail positioning stage (H-gantry)

H2W Technologies’ latest single-rail positioning stage design is an open-frame XY positioning system. It has two bottom parallel axes with one cross axis connecting the two (H-gantry). Each linear axis uses H2W’s brushless linear motors (BLDM-B04). Each has a total stroke length of 25.67 in. (652 mm) and can generate 6.2 lb (27.8 N) of continuous force and 18.7 lb (83.3 N) of peak force, or a combined 12.4 lb (55.6 N) continuous force and 37.4 lb (166.6 N) peak force on the bottom axis. The non-contact 1-micron resolution encoders allow for precise positioning. The moving tables are guided by a precision recirculating linear ball bearing system. Additional options include a home positioning sensor, end-of-travel-sensors, and custom mounting holes.
Click here to learn more.
Watch this stage in action.


Getting a grip on precision: Mechatronics vs. pneumatics

A gripping system for small parts that is both quick and powerful -- until now, that was often only possible with pneumatics. However, recently the leading expert for gripper systems and technology has developed a mechatronics-based EGP 40 gripper that easily achieves the same performance of its pneumatic counterparts. The drive that makes this impressive performance possible is FAULHABER small brushless DC servo motors from MICROMO.
Read the full article.


Mini linear motor stage with magnetic direct drive

Motion and nanoposi-tioning industry leader PI expands its PIMag series of high-dynamics linear motor stages with a new compact positioner for automation tasks. The V-408 stage is equipped with an incremental linear encoder for direct position measurement and a high-force 3-phase linear motor drive. The V-408 features high load-capacity precision crossed roller elements with anti-creep cage assist and a zero-wear, non-contact linear motor -- ideal prerequisites for long lifetime in high duty-cycle industrial applications. The high-force linear motor achieves velocities up to 1.5m/sec. An integrated optical linear encoder provides 10-nm resolution. Two models are offered with 25-mm and 50-mm travel range.


Advanced pneumatic standard cylinders with Adaptive Cushioning System

IMI Norgren’s ISOLine is a true fit-and-forget ISO cylinder. Inside lies the new Adaptive Cushioning System (ACS), which automatically adjusts the cylinder cushioning for changing loads, so manual cushion screw setting is not required. This makes the ISOLine much simpler to install. Other benefits include lower breakaway pressure, lower minimum speed, reduced leakage, polyurethane seals that ensure efficient low-friction operation, and reduced weight (20% lighter than previous versions). All sizes supplied with magnetic piston rod as standard.
Click here to learn more.


Easily automate a simple axis of motion

The Tolomatic ACSI integrated servo/motor/ controller is now available with PROFINET Industrial Ethernet protocol, allowing engineers to design easy-to-use and cost-effective electric actuator solutions for single-axis applications. The integrated package is ideal for replacing pneumatic cylinders and automating any simple axis of motion with Siemens or other PROFINET-enabled PLCs. With built-in configurations for Tolomatic electric actuators, the ACSI integrated controller automatically configures the motor, actuator, safety limits, and other key settings inside the controller for quick and seamless integration.
Click here to learn more.


Direct drive linear motor with integrated encoder

The new SDLM-019-070-01-01 direct drive linear motor is the latest addition to the series of zero-backlash, zero-cogging, high-acceleration, high-speed, high-resolution, long-life linear servo motors from Moticont. Also known as an electric cylinder, this compact direct drive linear motor is just 0.75 in. (19.1 mm) in diameter and 2.75 in (69.9 mm) long. Protected inside the motor housing, the linear optical quadrature encoder is directly connected to the shaft for the greatest possible accuracy. This unit has a stroke length of 0.500 in. (12.7 mm), a continuous force rating of 9.7 oz. (2.7 N), and peak force of 30.7 oz (8.5 N).
Click here for more information on this product series.


ABB's general-purpose motors combine quality, cost efficiency, and industry experience with short lead times

ABB has launched its N-series general-purpose motors to provide a high level of energy efficiency, reliability, and safety in applications where a highly customized motor in the 50- to 8,000-kW power range is not needed. The motors use cost-effective pre-packaged designs to meet the same high quality standards as all ABB motors but with lead times that are several weeks shorter. An easy-to-use online selection tool called "MachSize" simplifies motor configuration. Another tool called "DocStage" is a web-based system for sharing and managing documentation.
Click here to learn more.


New nanopositioning solutions catalog debuted at LASER 2017

Motion and precision positioning systems expert PI (Physik Instrumente) issued a catalog on newly introduced precision motion solutions for photonics, robotics, microscopy, and highly accurate industrial automation applications at LASER World of PHOTONICS held in Munich, Germany, in June. The 80-page catalog covers products and custom-engineered systems, including automated photonics alignment engines, linear motor stages, piezo actuators, air bearings, hexapod Stewart platforms, and high-performance motion controllers.
Get your nanopositioning systems catalog today.


Get 'V8 power' and nanometer precision positioning with PI's new piezo linear motor

Motion control and piezo systems expert PI (Physik Instrumente) introduces a new robust OEM walking motor drive, the N-331, with its configuration rooted in existing patented piezo actuator technology and a patented piezo stepping motion principle design. Unlike traditional electromagnetic motors, piezo motors do not create magnetic fields, nor are they influenced by magnetic or electric fields. The new design is ideal for use in high-end applications that require extreme precision and durability. High push/pull and holding forces qualify this non-magnetic drive as the fastest and strongest of its size class.
Click here to see it in action.
See the specs, datasheet, and more information.


Mike Likes: Small brushless motor with big performance

The new 3274 BP4 brushless DC motor series from FAULHABER is overload‐resistant and operates without wear‐prone mechanical commutation, giving the 3274 BP4 longer operational life than conventional micro DC motors. Weighing just under 320 grams, the 3274 BP4 brushless servo motor packs massive continuous torque of 165 mNm, making it ideal for applications where high power and dynamic start/stop operation with the lowest possible weight are crucial.
Click here to learn more.


Rotate an object to a precise angular position

Goniometer stages can measure angles of objects such as crystals or move an object to a precise angular position along an arc in relation to a fixed point in space. Two goniometer stages mounted in an alpha-beta configuration (stacked) can rotate an object around a fixed point in space on a spherical surface. Optimal Engineering Systems (OES) offers stacked, precision-aligned goniometer stages like the compact AK110-15-10 with a rotation center 50 mm above the upper stage. Goniometers are used for identifying crystals, examining cutting edges of medical instruments, estimating hyperspectral bidirectional reflectance, gloss measurements, measurements of radiation patterns of LEDs, directing lasers, aligning mirrors, and manufacturing quartz oscillator plates using quartz cutting X-rays.
Click here to learn more.


Compact hexapod for industrial alignment applications

PI has added a higher performance model to its range of compact hexapods. The new H-811.i2 provides twice the velocity along with sensor resolution up to eight times higher compared to the current H-811.D2 miniature hexapod. The compact size, robust design with low-friction ballscrews, brushless motors, and powerful controller with multi-axis alignment capabilities make the new hexapod an ideal tool for high duty-cycle alignment applications in optics, automotive, and photonics applications.
Specifications, datasheets, more information >
Read technical articles and applications of PI hexapods >


Stanford researchers debunk popular flight models by flying birds through lasers

By Warren Duffie Jr., Office of Naval Research (ONR)

Resembling a feathered flying ace with his miniature protective goggles and chinstrap, the parrotlet named Obie stood ready to take off. On signal, Obie propelled into the air, flapped through a laser field infused with microparticles, and landed on another perch 3 ft away.

Obie the parrotlet dons his flying goggles for a test run at Stanford Univ.

 

 

The journey only lasted 3 seconds, but it challenged the accuracy of three aerodynamics models long used to predict animal flight. It also might impact future designs of bio-inspired drones, robots, and unmanned aerial vehicles (UAVs), a topic of interest to the U.S. Navy and Marine Corps.

Sponsored by the Office of Naval Research (ONR), researchers at Stanford University found a new way to precisely measure the vortices -- the circular patterns of rotating air -- created by birds' wings during flight. The results shed greater light on how these creatures produce enough lift to fly.

"One of the most exciting recent advances in understanding flying animals has been the use of new technologies like this to collect all kinds of data in free-flight conditions," said Marc Steinberg, an ONR program manager who oversees the research. "We can learn what's really happening -- the biology and physics -- and apply it to create UAVs capable of navigating challenging environments like under a thick forest canopy or through urban canyons."

Led by Dr. David Lentink, the Stanford team tested three models commonly used to estimate how much lift birds, and other flying animals, generate when flying.

First, they had Obie and other parrotlets fly several times through a laser field flashing 1,000 times per second, lighting up nontoxic aerosol particles the size of a micron (one thousandth of a millimeter).

As Obie flapped through the field, thin mist particles moved around his wingtips and were photographed by super-high-speed cameras -- creating a new picture of the vortices in the wake of a flying animal. The Stanford researchers took this data and combined it with measurements gathered from another instrument, an aerodynamic force platform, invented in Lentink's lab with support from ONR.

"The platform is basically an ultra-sensitive weight scale that measures the force generated when a bird takes off in a specially designed flight chamber," said Lentink, an assistant professor of mechanical engineering.

The researchers then applied each of the three prevailing models to these new measurements multiple times. In each case, the existing models failed to forecast the actual lift of the parrotlets.

The problem is that long-standing models are based on historical measurements taken a few wingbeats behind a flying animal, resulting in predictions that wing vortices stay relatively frozen over time -- like the puffy clouds that form and dissipate slowly in an airplane's wake. Lentink's research, however, demonstrates that birds' wing vortices actually break up suddenly and violently, within two to three beats.

"For a long time, engineers have looked to animal flight literature to see how robotic wings could be designed better," said Lentink. "But that knowledge was based on inaccurate models for lift. We now know we need new studies and methods to inform this design process better. I believe our method, which measures lift force directly, can contribute to such improvements."

Future stages of Lentink's research will involve applying his new lift model to studies of how winged drones and UAVs can perform missions in environments that are difficult to navigate, such as dense woodland. His work is sponsored by an ONR Multidisciplinary University Research Initiative focusing on unmanned, autonomous flight.

Source: ONR

Published April 2017

Rate this article

[Stanford researchers debunk popular flight models by flying birds through lasers]

Very interesting, with information I can use
Interesting, with information I may use
Interesting, but not applicable to my operation
Not interesting or inaccurate

E-mail Address (required):

Comments:

Copyright © 2017 by Nelson Publishing, Inc. All rights reserved. Reproduction Prohibited.
View our terms of use and privacy policy