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Our March edition of Motors Monthly starts off with a trip to
Detroit to see all those nice shiney new electric motors being displayed
under the hoods of the electrically-powered concept cars at the 2009
North American International Auto Show. Then we move on to look at
electric brakes for motors, followed by a whitepaper on the accuracy of
a new piezomotor design compared to those old electromagnetic motor
models. The featured video examines cylindrical shaft-linear motors,
while an upcoming webinar looks at the efficiency of fractional-hp
motors and gearmotors. We close out the newsletter with our usual slate
of new products from the pages of Machine Design
magazine.
-- Bob Repas, Editor
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A less flashy batch of concept cars for 2009 showcase a combination
of energy-saving drivetrains and driver-centered electronics aimed at
safety and comfort. Despite a cruddy economy, automakers at the 2009
North American International Auto Show emphasized plug-in electric cars,
hybrids, fuel-cell concepts, and clean diesel models.
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Small Diameter Wave Springs
 Smalley Wave Springs
are now available from stock in diameters as small as 0.250". Hundreds
of new sizes have been added to stock in both carbon and stainless
steel. With up to a 50% reduction in spring height, Smalley's new series
of smaller Crest-to-Crest® wave springs minimize assembly cost and
total assembly size due to the reduced spring cavity required. Over
4,000 wave springs are available from 0.250" to 16" diameters. Specials
can be manufactured with No-Tooling-Costs™ from 0.200" to 90".
Free Samples are available.
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Fast, powerful, and controllable servomotors are an essential part
of many designs. But what happens when power to them shuts down?
Without energy to control motor shaft position, systems tend to move in
response to whatever external loads are applied at the time. At best,
this means that an emergency shut down or an unexpected loss of power
results in a machine out of sync. At worst, uncontrolled motion can
present significant safety risk.
Spring-applied electromagnetic and permanent magnet or PM brakes can
safely bring motors to a stop, or hold static position without external
power.
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BX4 Brushless motor with Four-Pole
Power and reliable long service life
 What can the Faulhaber
BX4 Brushless motor with 4-pole technology do for your designs? From
aerospace to robotics to medical applications, the BX4 can deliver power
for a wide range of applications. Constructed with a modular design with
fewer parts and no adhesive bonded joints. Continuous torque up to 12.2
mNm combined with the 22F series gearhead torque increases to 1,500 mNm.
Click here for more info and video on the all new BX4 from
Faulhaber.
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This whitepaper from Discovery Technology International, Sarasota,
Fla., discusses a unique, low voltage, high torque rotary motor, that
uses piezoelectric principles rather than EM, and identifies some of the
limitations of EM motor systems that it overcomes. According to the
authors, performance characteristics of the piezomotor yield significant
advantages in stabilized platform applications where high resolution,
short response time, smoothness of motion, and low drift are important.
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In this video, Jeramé Chamberlain from Nippon Pulse America
demonstrates the advantages of the cylindrical-shaft linear motor over
other linear motor types. 5:54
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Efficiency is often one of the last factors that design engineers
think about when specifying for an OEM application, yet it is critical
to a successful, optimized design in many ways.
Join Groschopp engineers Ron Didier and Jared Birk for an overview of
efficiency as it relates to other design considerations such as power
source, operating cost, temperature, purchase cost and size. Explore
these topics and learn…when does a more efficient, and sometimes more
costly, motor or gearmotor actually provide an ROI over the life of an
application?
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The RapidPower Size 17 BLDC motor is designed as a drop-in
replacement for NEMA-17 stepping motors. Features include low-cogging
torque for smooth operation; high efficiency for cooler operation; wide
speed range; and a variety of stack lengths to match motor package size
to required performance.
ElectroCraft Inc.
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The BL20 motor-starter module uses Swire technology for daisy-chain
connection from a single I/O slice to each motor starter via a ribbon
cable. Swire lets motor starters mount on separate DINrails within the
same panel. The module lets threephase motor control be connected to the
same rack as standard I/O.
Turck Inc.
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Feed-through filters Motor-line feed-through filters (MLFT) provide
EMI protection for dc motor and other low-voltage applications and offer
significant insertion loss to pass global conductive and radiated EMC
tests such as CISPR 25. These filters can be engineered into existing
mechanical packages.
Spectrum Control Inc.
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The RE 65 brush-dc motor delivers 250 W and is suitable for
applications where high efficiency, high power density, and a minimal
operating noise are crucial. The heart of the RE 65 is an ironless rotor
for detent-free operation and minimal rotor inertia. The four-pole
structure of the neodymium permanent magnets produces high torque and
very quick acceleration times.
maxon precision motors
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Energy Efficiency Web Conference & Expo –
May 14
Do you know you can get in-depth education on energy-efficiency and all
the benefits of an in-person trade show without ever leaving your desk
or spending a dime?
The intelligent use of energy is making headlines. Product designers and
manufacturers are striving to deliver products that consume less power,
extend battery life, generate less heat, or work from alternative energy
sources. Our Energy Efficiency Web Conference and Expo will
educate design engineers, product developers, and managers on how to
make the best use of energy-efficient product innovations and devices,
and on how to arrange them in systems to lower power consumption and
stay "green." This special one-day event will include sessions
on such areas as:
- Power-efficient drive techniques for lighting
- ROI for high-efficiency capital equipment
- Energy monitoring and energy standards
- Designing for SEMI S23 and the Energy Act of 2007
- Working with alternative power and battery technology
Make plans now to attend the Energy Efficiency Web Conference and Expo. The
event offers a full day of live webinars and interactive booths, along
with a Resource Center where visitors can download or link to additional
materials.
Register Now!
Machine Design Video Spotlight
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High-flex silicone
flat cable |
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A silicone injection molding process
developed by Cicoil Corp. embeds wires, coax, fiber optics, and even
piping into a single highly flexible flat cable for industrial
applications. |
Check Out the New Machinedesign.com
Our newly redesigned web site still features the best content and
information for engineers provided by engineers but with these new great
features.
Multiple Path Navigation
Find content your way. Improved site navigation creates multiple ways to
find the content you are looking for.
Supercharged Search
The search function has been highly improved and tested to provide the
most effective results for engineers.
Highlighted Resources
Looking for CAD drawings? Find them in our CAD Library.
Download whitepapers in the Whitepaper
Library. Valuable educational content is featured in the eBook
section. Check out the latest in editorial and sponsored video
in the Video
section.
UPCOMING WEBCASTS
Design Essentials for Plastic Gear Peformance
Sponsored by Thermotech
DATE: April 9th, 2009
TIME: 2:00pm ET/11am PT
Engineers are focused on creating cost effective, energy efficient
designs that offer performance and high value to the end customer.
Luckily, advancements in design, materials, manufacturing and inspection
have made it possible to meet product development goals and expand
plastic gear applications.
The webinar presents a unique approach to plastic gear development
including:
Critical gear design principles
Performance requirements to determine optimal materials
selection
Overview of tooling optimization technique
Metrology methods for plastic gears
Live question/answer session with presenters
Click here to register!
Efficiency in Fractional HP Motors & Gearmotors
Sponsored by Groschopp
DATE: April 16th, 2009
TIME: 2:00pm ET/11am PT
Efficiency is often one of the last factors that design engineers think
about when specifying for an OEM application, yet it is critical to a
successful, optimized design in many ways. Join Groschopp engineers Ron
Didier and Jared Birk for an overview of efficiency as it relates to
other design considerations such as power source, operating cost,
temperature, purchase cost and size.
Webcast attendees will receive an early release download of the new STPe
desktop design tool that allows engineers to calculate operating cost
based on speed, torque and power requirements and local kwh energy
costs.
Click here learn more and to register!
Improving Collaboration with Customers and Suppliers
Sponsored by PTC
DATE: April 23rd, 2009
TIME: 2:00pm ET/11am PT
The need to respond and capitalize on new customer requirements is more
important than ever during the current economic downturn. However, the
pressures of globally distributed design teams and more stringent time,
cost, regulatory and quality requirements continue to complicate the
product development process. In order to succeed, Small and Medium
Organizations need to collaborate across project teams more efficiently
to bring the right products to the marketplace at the right time.
In this live webcast, you’ll learn best practices to effective
collaboration:
- Enabling concurrent engineering with members of a distributed
design team
- Conducting efficient design reviews across the value chain
network
- Creating a controlled collaboration environment
- Proving secure collaboration to the design team and
suppliers
Learn how to build an engineering collaboration framework that’s best
suited for your business
Click here learn more and to register!
ARCHIVED WEBCASTS AVAILABLE FOR FREE VIEWING
Click
Here for a list of archived Machine Design webcasts.
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Motor Sizing & Selection
Use project specs to nail down the brushless, DC servo, and/or stepper
motor along with drive products....from Danaher Motion.
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Contact Information
Editorial questions: Robert Repas
216-931-9319
Advertising/sponsorship opportunities: Virginia Goulding
216-931-9893
Machine Design
1300 E. 9th St.
Cleveland, OH 44114
©2009 Penton Media, Inc. All rights reserved.
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