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| The latest information on engineering materials
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September 2, 2008
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Nanomagnets, micropores, and ant-size
motors.
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In this week's issue, big ideas are packed into tiny materials.
We'll take a microscope to rapid manufacture with electron beams, the
self-lubricating power of powder-metal bearings, and small but mighty
piezo motors.
But first, take a look at magnetic nanocomposites, nano-sized magnetic
crystals embedded in an amorphous matrix. They could be the next big
thing in soft magnetism. Carnegie Mellon professor M. E. McHenry
described his recent research into magnetic nanocomposites to Machine
Design editor Lee Teschler on tape. Watch the video on Engineering TV.
Jessica Shapiro
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How often has one of your designs been a trade-off of weight versus
strength? Too heavy, and you waste material. Too light, and parts might
fail. Electron beam melting (EBM) is a rapid-manufacturing technique for
fabricating 3D-lattice structures that can replace solid metals and even
encourage bone ingrowth in medical implants.
Read the whole story.
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Defining the Direct Digital
Manufacturing and Rapid Tooling Matrix
Learn how to determine when to use direct digital
manufacturing and rapid tooling matrix through an analysis of timelines,
cost and geometries in this one-hour webcast on Wednesday, June 18 at 1
p.m. EST. Register online
www.redeyerpm.com/webcast
Plastic Parts with Smooth surface
finish
Get a smooth surface finish with Ready Part – a process
that reduces the need for extra sanding or finishing of FDM
parts.
http://www.redeyerpm.com/ReadyPart |
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Could self-lubricating bearings with a wide temperature range
actually save you money? They could if they are made from powder metal
(PM). Engineers have relied on bearings and bushings made from PM for
over 80 years, and recent advances have made PM parts even more
attractive. Reliable test data, quality control, and specifications can
help designers select and apply these versatile parts.
Read the whole story.
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The plethora of shrinking devices spurred by new technologies need a
special type of miniature electric motor that fits their small size.
Instead of the typical magnet-and-coil construction, these motors use
piezoceramic compounds that pull or push armatures into position using
direct physical contact.
Read the whole story.
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Inexpensive plastic netting protects products, even during shipping.
The inert polyethylene material resists abrasion and withstands most
chemicals and solvents. It comes in flat sheets for layering or as
sleeves. The netting comes in three different strengths and a variety of
colors. Common applications include protecting precision components,
glass bottles, and gas cylinders.
More Information:
Caplugs
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Free Guide: Convert Metal Designs to
Plastic
 Cut your parts
count, eliminate welding and assembly. This new
guide reveals how design engineers in the know converted their metal,
wood and plastic parts to rotationally molded plastic. They cut the
weight, cut hard costs and then earned promotions. True case studies
highlight award-winning, fully integrated design upgrades for Titleist
and Callaway plus lighting, construction, basketball units and
more.
Get your free guide, "Rotomolding.com's Most Remarkable Plastics Design
Conversions" at Rotomolding.com; call 800.772.7659 or email agirard@modroto.com.
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Thermally conductive thermoplastics for heat sinks and thermal
management dissipate the same amount of heat as aluminum but are up to
50% lighter with no antenna effect. E-Series grades are electrically
conductive and provide inherent EMI/ RFI absorption. D-Series grades are
electrically insulative and produce no signal interference and or
magnetic coupling. The polymers have a thermal conductivity of 20 W/mK,
thermal diffusivity of 0.1 cm2/sec, and a density of 1.7 gm/cm3. They
are available as injection-molding compounds, off-the-shelf parts, or as
custom injection molded parts.
More Information:
Cool Polymers
Inc.
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The Fenner High Torque (FHT) Class of synchronous belts have a
curvilinear tooth profile. The design is said to produce less noise,
dusting, backlash and vibration resulting in longer life. The belts are
made of polyurethane with Kevlar or other textile reinforcement for over
1,000-lb tensile strength. FHT belts are available in 1, 2, 3, and 5-mm
pitches, 0.97 to 3.4-mm thicknesses from belt OD to tooth peak, and
0.098 to 10-in. widths. High coefficient of friction and temperature
resistant grades as well as custom features are available on request.
More Information:
Fenner
Precision
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Engineering TV is an innovative online video program
by engineers for engineers. Twice a week, each 5-8 minute episode shows
cutting-edge technology in
action and looks behind the scenes as today's engineers shape tomorrow's
breakthroughs. Brought to you by the Penton Media Design and Electronics
Engineering groups.
View
Videos
Rev up your interdisciplinary design skills
What happens when a microcontroller turns on a power FET, sending a
current pulse to a motor coil that develops a magnetic field which turns
the rotor shaft, advancing a timing belt that drives a pair of nip rolls
suspended on bearings in a web-processing operation on a form, fill, and
seal machine installed on a potato chip line at a Frito Lay plant in
central California? And how can you be sure that the encoders, prox
sensors, and other feedback devices you plan to use will accurately see
and report every relevant motion, machine state, and process condition?
And will the signals get through the networks fast enough, without being
corrupted, giving the controllers time to execute their algorithms as
intended? It's a lot to think about, and it only scratches the surface
of what many engineers grapple with today. If you happen to be one of
them, then the place for you — where you can find answers and meet
others with similar concerns — is www.Mechatronic-Design.com.
Backed by some of engineering's top information sources including
Machine Design, Electronic Design, Motion System Design, and Power
Electronics, Mechatronic-Design.com is the interdisciplinary engineer's
desktop, toolbox, library, and lifeline in one easily accessible
place.
Find. Learn. Apply.
Mechatronic-Design.com.
Experience National Instruments Technologies From
the Comfort of Your Own Computer!
 With more
than 200 on-demand webcasts, videos, interactive
tutorials and demos available for users of any experience level, it is
easier than ever to learn about the newest products and features
available from National Instruments.
Begin your search here with a collection of
webcasts specifically chosen for design and automation engineers.
CAD Library offers advanced CAD Resources
The Machine Design CAD
Library, includes millions of configurable 2D and 3D CAD models
of
components and assemblies downloadable for easy use in new and existing
designs. Our models are in native CAD formats. No translation
required!
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Sponsored
by:
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UPCOMING IN-PERSON EVENTS
Design-2-Part Shows are America's longest running and most trusted
events for sourcing custom parts and services.
Ten shows covering the country offer OEMs, engineers and purchasing
personnel the opportunity to meet job shops and
contract manufacturers face-to-face.
UPCOMING WEBCASTS
Direct Metal Laser Sintering (DMLS) Gives Designers New Freedom and
Manufacturers a Higher Degree of Quality Control
Sponsored by Morris Technologies
DATE: September 4th, 2008
TIME: 2:00pm ET/11am PT
DMLS is more than a prototyping tool; it’s a viable manufacturing
alternative that can deliver parts in volume with competitive pricing.
Primarily employed for rapid prototyping, DMLS now plays an important
role in manufacturing by delivering parts in volume with competitive
pricing. Applications are wide ranging and include inserts for plastic
injection molding and die casting, as well as direct parts for a variety
of applications and industries including aerospace, automotive, medical,
electronics and many others.
Click here to learn more and register!
An Introduction to Non-contact, High-speed Jet Dispensing
Sponsored by EFD
DATE: September 17th, 2008
TIME: 2:00pm ET/11am PT
As today’s products continue to pack more and more features into
smaller and smaller packages, manufacturers need new ways to apply
adhesives, coatings and other assembly fluids in smaller, more precise
amounts than ever before.
Jet dispensing systems combine high production speed with exceptional
accuracy and process control. They are ideal for dispensing a wide
variety of adhesives and other assembly fluids at speeds up to 150 dots
per second in accurate, consistent volumes as small as 0.002 μl (2
nl).
By using piezoelectric technology to jet fluid onto the substrate, these
non-contact systems eliminate the need for precise height positioning
and time-consuming Z-axis movement, allowing production lines to run at
maximum capacity.
Click here to learn more and register!
ARCHIVED WEBCASTS AVAILABLE FOR FREE VIEWING
Click Here for a list of archived Machine Design
webcasts.
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MetalCastingDesign.com is a news website sponsored
by the American Foundry Society (AFS). It provides metal-casting buyers
and design engineers an online resource for metal casting information,
including casting alloys, processes, design advice, and a directory of
metal-casting suppliers. The Casting Alloy and Process Selector (CAPS)
provides design and sourcing information based on seven criteria such as
estimated component weight, section thickness, surface finish, and
similar factors. The new website will host content previously shown on
castsolutions.com such as web-only white papers and industry news.
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Boker's 2008 Washer Catalog
Boker's, Inc.'s FREE 2008 Washer Catalog has over 22,000 non-standard
sizes
available with no tooling charges. A wide range of ODs, IDs and
thicknesses,
plus 2,000 material variations provide millions of possibilities.
www.bokers.com/mde
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Contact Information
Editorial questions: Jessica Shapiro
216-931-9850
Advertising/sponsorship opportunities: Virginia Goulding
216-931-9893
Machine Design
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©2008 Penton Media, Inc. All rights reserved.
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