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Attention to detail can be the difference between an adequate design
and a truly great one. This is particularly true in the fastening and
joining arena. This month's newsletter takes a close look as some of
those details. Could switching to epoxy adhesives solve some pesky
reliability problems? Is your design too precise when it comes to
component assembly? And could a tiny bushing improve machine
performance?
We're interested in the details of your response to these items, too.
Please share your thoughts with us via email or on the Machine Design forums.
Jessica Shapiro
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Epoxy adhesives hold their own
When you look out your airplane window in a few years, you may not
see the familiar rows of rivets. Believe it or not, adhesive bonding has
advanced to the point where it can compete with high-performance
traditional fastening technologies. Adhesives can lighten structures and
extend service life in aerospace, marine, electronic, and automotive
applications.
Read the full story.
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Newest Weapon for Thermal
Management
 Master Bond's
EP30AO is a thermally conductive, electrically insulative potting and
encapsulation compound that facilitates thermal management by permitting
effective heat dissipation from highly populated circuit boards. EP30AO
has a low viscosity; cures at room temperatures; has superior
dimensional stability and high physical strength; resists long-term
exposure to water, oils, fuels, and many chemicals; and can withstand
thermal cycling.
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Constraint-driven design
Exact part location and minimal clearances seem like the Holy Grail
of precision mechanical systems. But insisting on the slimmest
tolerances can make assembly and disassembly difficult. Assembly
processes can fail because of tolerance stack-up, human error, or
volumetric changes in mating parts. By thinking about assembly from the
start of the design process, engineers can prevent failures and
redesigns down the road.
Read the full story.
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WESTERN WIRE PROUCTS
LET US MEET YOUR SPECIFICATIONS FOR CUSTOM WIRE FORMS,
STAMPINGS
AND ASSEMBLIES
 CNC Custom
Wire Forming
Western Wire is a leader in the CNC wire forming
industry. Whether your need is for small volumes or prototyping to
medium volumes, in complex or simple shapes Western Wire offers a unique
range of CNC forming capabilities to address your requirements. Send
over a sample, print or sketch for us to quote!
Multislide Forming & Stamping
Western Wire maintains an extensive capability in multi-slide/fourslide
wire forming and stamping. Typically for higher volume tasks, Western
Wire’s multi-slide/four-slide department provides high quality
competitively priced components for your needs.
Click Here to Visit WesternWireProd.com
or call 800-325-3770
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Attaching components to smaller
shafts
Fasteners used to connect components to high-speed shafts have to
have low inertia and create few vibrations. Component alignment,
accuracy, holding ability, and runout also become more critical at
higher speeds. There was no compact bushing for shafts less than an inch
in diameter that could handle all these tasks. So engineers at Custom
Machine & Tool Co., E. Weymouth, Mass. decided to design and build
one.
Read the full story.
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Heavy-Duty Latch
The 3-145 T-handle latch, for indoor and outdoor enclosures, is
designed with antivandalism measures to protect the cylinder and
prevent the latch from being pried open. Users unlock two separate
locks, push the handle to advance the T-handle actuator, then rotate the
actuator for access. The handle cannot be accidentally closed. The latch
can be installed into right or left-hand doors without adjustments. It
can accomodate single or multiple latching points. The unit can be
incorporated into security-management systems.
Dirak Inc.
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Design-in Rotor Clip products for your application
needs
 Request our new
216-page Rotor Clip Product Specifications Catalog. This publication
includes detailed engineering specs on all product lines we manufacture,
including tapered section retaining rings, constant section rings,
spiral retaining rings, wave springs and self-compensating hose clamps.
Available finishes, materials & packaging are also included. All specs
are available on our web site, as well as the option to order free
samples & to request a quote.
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Light-Cured Adhesives
The Tru-Bond 18400 Series of light-cured pressure-sensitive
adhesives hold metals, glass, ceramics, and plastics. The adhesives come
in liquid and gel formulations and have unlimited open time after
application. The solvent-free adhesives can be applied by hand or with
automated dispensing equipment. Exposure to UV light cures the adhesives
to bond strengths of 8 to 12 pli in about 12 hr. The bonds withstand -10
to 125°F.
ITW Devcon
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Structural Blind Rivet
The HuckLok structural blind rivet’s quarter-inch grip range and
large blind-side footprint offer above-average shear, clamp, and tensile
strengths. They are available in a variety of hole sizes and 1/8 to
7/8-in. grip range. The Huck-Lok comes in 3/16 and 1/4-in.
diameters.
Alcoa Fastening
Systems
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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
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sensors, and other feedback devices you plan to use will accurately see
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And will the signals get through the networks fast enough, without being
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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
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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
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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
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UPCOMING WEBCASTS
Using an Explicit 3D CAD System For Rapid Design Cycles
Sponsored by PTC
DATE: September 30th, 2008
TIME: 2:00pm ET/11am PT
Your business is challenged every day to keep up with short lead times,
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Real-world success story: How Molex, a developer of electrical and
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Click here to learn more and register!
Thermal Management: Heat Balance Control via IR Sensing
Exergen Corporation
DATE: October 7th, 2008
TIME: 2:00pm ET/11am PT
Thermal management using heat balance control can boost production line
speed for a myriad of applications. Explore how this technology can work
for your operation.
Learn the fundamentals of IR temperature sensing:
Infrared physics and math
Emissivity (high and low)
Principles of the IRt/c in noncontact temperature measurement
Heat transfer physics and math
Apply IR temperature sensing to heat balance control:
Principles of the heat balance in time and space
The speed boost equation
Balanced heat input via IR Control
Applications (laminating, drying, printing, heat sealing, color
copying)
High-speed event detection
Click here to learn more and register!
Motion Control Cards: Options and Architectures
Advanced Features and Application Design Challenges
Sponsored by PMD
DATE: October 16th, 2008
TIME: 2:00pm ET/11am PT
What form factor to use?
Over the years there have been a number of motion control card
implementations, mainly based on some version of a PC-bus.
Today the most common ones are based on PCI, ISA, and PC/104 formats.
In that last couple of years a stand-alone card format with serial
communication has become common, adding value by reducing the dependence
on the PC chassis and saving space.
There have also been a lot of improvements in motion control cards’
capabilities and performance that allow for much better system
optimization. In this presentation we will explore these advances in
card technology and how it affects motion control system architecture
and design.
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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3M acquires Polyfoam Products
3M has acquired Polyfoam Products Inc., a structural adhesives
company specializing in foam adhesives for tile roofing and other
adhesive products for the building industry.
Polyfoam’s professional tile roofing system provides an alternative to
mechanical fastening, especially in hurricane-prone areas. The adhesive
locks tiles in place and eliminates the tiny punctures nails and screws
leave in roofs.
Click here for
more information.
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Visualizing airframe fasteners
VISTAGY Inc.'s Airframe Development Environments software lets
engineers choose how they want to visualize fasteners and assemblies
based on the engineering task at hand. During the assembly-design and
fastener-layout phase, simple point and vector representations of
fasteners are sufficient. At other times, cylindrical representations of
fasteners are needed. When it is necessary to model all the hardware at
every location, Airframe Development Environments 2.0 loads fasteners
and hardware into the 3D model with the push of a button.
Click here for more information.
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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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