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Looking sideways at the
problem
Sometimes technologies that appear peripheral to a task can make
the
difference between a reliable design and one that fails before its
time.
Today we'll look at new models for vibration isolation and sensors to
reduce waste in automated lines.
Then, to celebrate the beginning of winter, check out how one company
redesigned its ski bindings.
As always, please share your thoughts with us by email and on the
Machine Design forums.
Jessica Shapiro
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Shaking up vibration models
The idea is simple: Protect sensitive objects from vibrating floors
and foundations. So is the basic vibration-isolation system model,
found
in most every vibration textbook. An object, modeled as a solid block,
sits on a low-stiffness vibration isolator that, in turn, mounts on the
vibrating support surface.Based on this model, the “Absolute
transmissibility” graph shows how vibrations transmitted from the
floor to the object depend on supporting-surface vibration frequency
and
isolator damping.
Read the full article.
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Blind threaded inserts solve
accessibility problem
 Atlas®
SpinTite® blind threaded inserts offer ideal solutions for "blind"
attachment applications where only one side of a panel is accessible
for
assembly. These inserts install quickly and easily from the accessible
"front" side with only a single mating screw required to complete final
component attachment.
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Ultrasonic double sheet detectors
Ultrasonic double-sheet detectors distinguish between single and
double sheets of paper, plastic, or metal foils to prevent waste or
machine damage. The sensor operates by beaming ultrasonic sound waves
through the material from one side and measuring the intensity of the
sound detected on the other side. An embedded microprocessor evaluates
the sound levels at the receiver to trigger one of three output signals
for no sheet, individual sheet, and double sheet.
Read thefull article.
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In search of the perfect Telemark ski
binding
Telemark skiing might not have as many devotees as downhill and
cross-country skiing, but its back-country setting — off the beaten
trails with plenty of fresh snow and wide open vistas — has attracted
a loyal following. And as more people take up the sport, a hybrid of
downhill and cross-country skiing, the equipment is changing to
accommodate a wider variety of telemark (or freeheel) skiers. So G3
Genuine Guide Gear Inc., North Vancouver, Canada, decided to update its
popular Targa binding, the device that holds a ski onto the skier’s
boot.
Read the full article.
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Ceramic Fasteners
Alumina ceramic fasteners that operate at 1,500ºC offer excellent
electrical insulation and heat and chemical resistance. Available sizes
range from M3 to M10 in slotted flat fillister head machine screws,
hexagon headed bolts, and hexagon and Dihedral nuts.
Rino Industries Ltd.
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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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Medical Device Adhesive
MD 1000 Series adhesives are designed for quick bonding with
visiblelight LED systems. The adhesives are solvent-free and resist
moisture and humidity. Available viscosities permit gap filling. The
adhesives are said to replace ultrasonic welding by providing a strong
bond for plastic joints with overlaps, flanges, or tabs. They are USP
Class IV and ISO-10993 certified for medical-device applications.
The company’s BlueWave LED system emits a narrow-band of visible
light
centered on 410-nm wavelength. Top output of 2,500 mW/cm2 in an 8-mm
diameter spot lets Blue- Wave cure the MD 1000 adhesives quickly and at
cooler temperatures.
Dymax
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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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Floating-nut fasteners
Riv-Float is a patent-pending rivet nut with internally floating
threads. The nut has 0.020 in. of radial float. It pivots to align with
the screw angle, eliminating cross threading and spin out. The product
lets installers attach components in off-center applications and
compensate for tolerance stack up in the manufacturing process.
Riv-Float can replace cage nuts, clinch nuts, floating nut plates, or
weld nuts.
The product is distributed by Sherex and HW Eckhardt.
Sherex
HW Eckhardt
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PennEngineering acts against
trademark
infringement
PennEngineering executed a seizure action at the National
Industrial
Fastener Show/West against FinExpress Fastener Co. Ltd. of Guangzhou,
China. The action enforced a United States District Court judgement
entitling PennEngineering to monetary damages and ordering FinExpress
to
immediately cease infringement of PennEngineering’s
trademarks.
For
more information contact PennEngineering.
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