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What designers should know about customizing
connectors
It might be necessary to use custom connectors for a new medical device
when the one you need doesn’t appear in catalogs. Before calling a
vendor, however, you might sketch out a few particulars. For example:
What are the environmental conditions? Obviously there will be an
operating temperature range. And the sterilization method will govern
material selection. To read what our sister publication Medical Design
says are the types of questions a connector fabricator will likely ask
when you spec a custom design click here
—
Jean M. Hoffman
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Part design - Assembly of
components
An archived Webinar presented by Bill McMaster, BASF Engineering Plastics, is posted on the
IDES Web site.
It provides an overview of various assembly methods for
plastic-to-plastic and plastic-to-metal components. Snap-fits, self
threading fasteners, welding, and press-fitting will be discussed with
the pros and cons for each. Examples with actual design calculations
will be given. The seminar will help designers determine which assembly
method to use for a particular application and design a cost effective
and efficient joint the first time.
View the Webinar
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New low cost captive panel screw from
PennEngineering
 The new PEM type
SCBTM Spinning Clinch Bolt
is a one piece fastener that installs by simply pressing it into a
properly sized hole. The controlled clinching action permanently
captivates the screw
in the panel yet still leaves it to spin freely in the sheet. This
allows quick attachment of mating hardware, eliminating much of the need
for loose
fasteners, such as screws and retaining clips or washers, or
expensive multi-component fastener assemblies.
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From the Machine Design archives: Big-bang
bonding
Bolts, screws, or welds are typical methods for joining dissimilar
metals. Although each can produce strong joints, all have shortcomings.
For example, it's impossible to weld together materials with vastly
different melting points such as stainless steel and aluminum. Holes for
fasteners weaken joints and the fasteners themselves may have different
strengths and thermal behavior than the clamped parts. Eliminating these
concerns is a less-conventional but highly effective method for joining
different metals: explosion bonding. It uses a controlled detonation of
ammonium nitrate and fuel oil to drive together two or more metals at
speeds to 1,600 ft/sec creating contact pressures to 600,000 psi. The
intense pressure forms an intermolecularly cohesive bond at the material
interface.
Read the full story
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Adhesive Has Exceptionally High Thermal
Conductivity
 Master Bond
EP21AN is a two
part epoxy resin system with a thermal conductivity in excess of
22Btu•inch/ft2•hr•°F.
It is an outstanding electrical insulator with a dielectric strength
of >400 volts/mil and a volume resistivity greater than 1013
ohm cm. This easy to use adhesive
has been formulated with a non-critical one to one mix ratio by
weight or volume.
It cures readily at ambient temperatures. Its coefficient of thermal
expansion is a desirable
18-20 x 10-6
in/in/°C.
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IDCs go industrial
Insulation displacement connectors from Balluff Inc. , are
now rugged enough to withstand industrial environments. The connectors
handle 342 Vdc at up to 4 A in temperatures from −5 to 50°C.
Once in place, the connectors are IP67 rated.
Scanning for Ideas
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Rugged double-jaw entry latches
A double-jaw, entry-door latch is a candidate for rugged off-highway
equipment and satisfies the FMVSS-206 standard for vehicle entry doors.
The two-position R4-50 rotary latch comes in optional pull-handle,
push-button, or electronic linear actuator styles and with a range of
mounting and operating options. The latches can serve in applications
across a variety of off-highway equipment — from large track-propelled
earthmoving equipment to smaller skid-steer loaders. The rugged latch
can be coupled with electronic access entry doors for cab-interior and
chassis-mounted applications that actuate by electronic key fobs,
proximity cards, smart buttons, numeric keypads, and biometric readers.
Southco
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Yardley Inserts...We're in there. And
there. And there. And there.
 An inventory of
over 24 million molded-in, pressed-in, self-tapping, ultrasonic and
thermal inserts, Yardley Products is a worldwide leader in
precision-engineered threaded metal insert manufacturing.
Yardley will also meet exacting specifications for any application.
Capabilities include: large inventory, prompt delivery, patented
designs, ISO 9001 and RoHS compliant, CNC Machining, special run
ordering and incredible flexibility.
Receive a 2% Discount Off Your First Order!
All first orders will receive a 2% discount off the total purchase.
Please use promotional code F0208NL. Click here.
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Fasteners are a snap with high-flow nylon
A high-impact nylon 66 (PA66) called Chemlon 109 flows easily into
intricate and multi-cavity molds for fasteners and automotive
applications such as engine cradle nests. In comparison to other types
of PA66 it reportedly is tougher, better resists low-temperature
impacts, and costs less. The compound’s flexural strength also lets it
withstand assembly stresses, while its toughness keeps parts from
cracking at low temperatures. Other key properties of the compound are a
notched Izod impact strength of 4.5 ft-lb/in. (240 J/m) at 40°C. and
flexural strength of 7 kpsi (48.3 MPa).
Chem Polymer, Teknor Apex co.
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Flexible, low-viscosity potting
compound
A new flexible, tough epoxy potting and encapsulation compound called
EP30FL can be used in both thick and thin cross sections. It is 100%
reactive and contains no volatiles. The compound generates low exotherm
during cure even though it cures relatively quickly at room temperature.
Its cure shrinkage is low and it bonds to similar and dissimilar
substrates. Because of its flexibility it’s a candidate for use in
environments exposed to thermal cycling. Additionally it can withstand
mechanical shock and vibration, is water resistant, and in the cured
state can serve as an electrical insulator. The compound comes in half
pint, pint, quart, gallon, and five gallon kits.
Master Bond
Inc.
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Introducing Engineering TV, 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
Two-Shot Silicon and Thermoplastic Molding:
The Innovative Cost Saving Solution for Medical OEM's
Sponsored by Saint-Gobain
DATE: April 2nd, 2008
TIME: 2:00pm ET/11am PT
Medical device designers are facing intense pressure to create
innovative designs and maintain the highest quality over a product's
lifecycle while also being forced to design for lower cost
manufacturing. This is a challenge we recognize, but one that can be
overcome by leveraging the cost savings and benefits of two-shot molding
technology. Saint-Gobain's engineering team will present on two-shot
molding, how this process innovation can provide cost savings, increased
design freedom, and provide the quality and performance you demand.
Click here to register!
Gearmotors: Achieving the Perfect Match
Success through optimized motor & gearbox integration
Sponsored by Groschopp
DATE: April 9th, 2008
TIME: 2:00pm ET/11am PT
How do you select a motor and a gearbox (speed reducer) separately, then
perfectly match them for your OEM application? Is it better to specify
a pre-engineered gearmotor? Does it make a difference?
These are the questions that will be answered in Groschopp's upcoming
webcast. Groschopp engineers Matt Decker and Loren Kamstra will share
tips, tricks and techniques for specifying the most efficient and
cost-effective choices given a variety of application considerations.
Review of actual Case Studies will bring their experiences to life and
reinforce your new motor/gearbox/gearmotor knowledge.
Click here to learn more and register!
Wireless Sensor Networks
A Surveer of Design Options
Sponsored by Winland Electronics Inc.
DATE: April 30th, 2008
TIME: 2:00pm ET/11am PT
Developing a wireless sensor network can be an awesome challenge or a
simple matter of picking the right module, depending on who you ask.
Off-the-shelf solutions have certain advantages, but may not be the best
overall solution to your problem. Home grown or custom solutions can be
designed to overcome specific challenges, so they can be critical for
certain projects. Learn more about the technical pros & cons of both
options in this live course.
Click here to register!
2008 Online Manufacturing WebExpo & Conference
Presented by New Equipment Digest and Machine Design
DATE: May 21st, 2008
TIME: 9:00 am - 5:00 pm ET
The Online Manufacturing WebExpo and Conference brings you and your
management team the advantages of a traditional trade show without any
of the travel cost! Participate in a webcast, visit a trade show booth
and pick up valuable literature - all from the comfort of your
office.
Webcasts:
This all day online event will feature a series of "LIVE" Webcasts
covering a broad range of manufacturing-related topics. Tune in to any
or all of the Webcasts. Ask questions during the broadcast, hear what
your peers are asking too. Register today for the series featuring
Parker Hannifin - Tube Fittings Division, AutomationDirect and Bimba
Manufacturing.
Trade Show:
Visit company booths at the virtual exhibition hall where you can learn
about new products, subscribe to newsletters, download white papers or
literature from Sealevel Systems, AutomationDirect, Bimba
Manufacturing, EFD, FactoryMation, Parker Hannifin - Tube Fittings
Division and Strong Hold Products.
Stay for an hour or stay all day - you decide. Without burdensome travel
costs, you can invite your whole management team to view a Webcast or
review product features at company booths.
People who should attend:
All types of Engineers, Plant Managers, Facilities Managers,
Maintenance, Plant Operations, Analysts, Research and Design, VP of
Operation, Managers, Directors, CEO, President, and Safety
Directors.
To register for this free event, visit www.newequipment.com/webexpo
ARCHIVED WEBCASTS AVAILABLE FOR FREE VIEWING
Click Here for a list of archived Machine Design
webcasts.
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3M celebrates and you can win some
nifty "swag"
3M observed the 60th
anniversary of the invention of vinyl electrical tapes last year, and
NASCAR celebrates its 60th anniversary this year. Scotch Super 33+,
Scotch Super 88, and Scotch 35 vinyl electrical tapes are the only vinyl
electrical tapes still being made in the USA. To commemorate the
anniversaries, 3M has launched The Scotch vinyl electrical tapes and NASCAR
promotion that builds on the patriotic era of the 1940s. Illustrations
on tape packaging that sport artwork with beautiful women in scenes
related to car racing &Dash; available only at authorized 3M electrical
distributorships — will have a unique sweepstake code that can be
used online to win instant prizes including leather racing jackets,
radio-controlled race cars, sets of the four posters of the
commemorative artwork, pit shirts, replicas of 1948 die-cast cars, pit
gloves and T-shirts.
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ATExpo 2008
At Assembly Technology Expo designers will be able to see, test, and
compare innovative advances for the entire assembly process from
adhesive/dispensing equipment, materials/parts handling, test equipment,
and conveyors to electronics assembly, wire processing and cable
assemblies, welding and brazing equipment, and much more. The exhibition
will run September 23 to 25 at the Donald E. Stephens Convention Center,
Chicago. Information regarding the event’s technical conference will
be available in June. In addition, your ATExpo badge also provides free
admission into six co-located manufacturing events: Electronics Assembly
Show, Medical Design & Manufacture Midwest, National Manufacturing Week,
Plastec Midwest, Plastics USA, and Green Manufacturing Expo.
For more information
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Eurojoin 7
The European Welding Federation (EWF) and the Italian
Institute of Welding (IIS) invite all people involved in welding and
joining technology to take part in Eurojoin 7 — Seventh
European Congresses on Joining Technology. The event will take place
May 21 and 22, 2009 in Lido of Venice (Italy) at the Congress Centre of
the Casinò Palace.
More information
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Contact Information
Editorial questions: Jean Hoffman
303-998-9227
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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