Click this link if you cannot read the issue below: Designfax - Tech for OEM Design Engineers
December 23, 2014Volume 10 Issue 48


Image - Molded Nylon Special Standard Round Spacers
Molded Nylon Special Standard Round Spacers
Micro Plastics announces a new product line of Special Standard Round Spacers. The new line of molded nylon round spacers includes over 250 sizes, with diameters of 1/8" through 1 1/2" and lengths from 1/8" to 2 3/4". These tough, resilient spacers can be used in a variety of assemblies. Useful in electronic and electrical applications, they may also be used as bushings, bearings, rollers, gliders, and bumpers. They are resistant to vibration, abrasion, and corrosion; are electrically insulating; and have a high strength-to-weight ratio.

Click here to learn more.


In this issue of Designfax

  • See Derby run -- on custom 3D-printed prosthetics
  • Pacemaker based on automatic wristwatch
  • More powerful electric vehicle inverter
  • Wheels: Largest single-piece aluminum tank hull
  • Mike Likes: Mini rotary actuator
  • Engineer's Toolbox: Secret to living hinges
  • Product: Shaft couplings eliminate resonance
  • Product: Customized direct-drive motors
  • Cool Kits: Wireless tactile feedback prototyping
  • Videos+: Technologies and inspiration in action
    • Top Gear host drives world's smallest car
    • World's largest 3D-printed wrench
  • Most Popular Last Issue
    • Tiny rotary engine concept is 4-lb powerhouse
    • Conductive clay shapes energy storage
    • New Mazda MX-5 bio-based plastic
  • New Products
    • Electrical, Mechanical, Motion
    Cover Image: Alcoa manufactures world's largest single-piece forged aluminum hull for combat vehicles

News

NIST tests: Firefighters' portable radios may fail at elevated temps

New 'high-entropy' alloy is as light as aluminum, as strong as titanium alloys

Breakthrough capability keeps Navy subs, ships on safe track

Minivans come up dangerously short in latest IIHS small overlap tests



Image - Happy Holidays and Happy New Year <br>from Designfax!
Happy Holidays and Happy New Year
from Designfax!

Thanks to all of our readers, sponsors, writers, and article contributors for making 2015 a great year. We wish all of you a healthy, happy, and prosperous 2016!

Don't forget to pass along your issue of Designfax to an engineering colleague.
Go to the Designfax subscribe page.

Coming next two issues ... Best of 2015.


Feature articles

Image - See Derby run -- on custom 3D-printed prosthetics
See Derby run -- on custom 3D-printed prosthetics
An engineering team from 3D Systems has successfully outfitted Derby, a Husky mix dog, with 3D-printed prosthetics, allowing him to run down the street for the first time ever. Derby was born with a congenital deformity characterized by small forearms and no front paws.
Read the full article.

Image - Batteryless cardiac pacemaker design based on automatic wristwatch
Batteryless cardiac pacemaker design based on automatic wristwatch
A new cardiac pacemaker based on an automatic wristwatch and powered by heart motion was presented at the ESC Congress 2014 in September by Adrian Zurbuchen from Switzerland. The prototype device does not require battery replacement.
Read the full article.

Image - New ORNL electric vehicle inverter packs more punch in a smaller package
New ORNL electric vehicle inverter packs more punch in a smaller package
Using 3D printing and novel semiconductors, researchers at the Department of Energy's Oak Ridge National Laboratory have created a power inverter that could make electric vehicles lighter, more powerful, and more efficient.
Read the full article.

Image - Wheels: <br>Alcoa manufactures world's largest single-piece forged aluminum tank hull
Wheels:
Alcoa manufactures world's largest single-piece forged aluminum tank hull

Alcoa has produced the world's largest single-piece forged aluminum hull for combat vehicles to improve troop protection as part of a joint Alcoa-US Army initiative launched last year. Based on early modeling and simulation, single-piece underbody structures could provide two times better protection against blasts than traditional hulls.
Read the full article.

Image - Mike Likes: <br>Mini rotary actuator has highest torque and power output
Mike Likes:
Mini rotary actuator has highest torque and power output

New Scale Technologies has created a miniature rotary actuator module (M3-R) with torque of 0.17 Nm and speeds of more than 400 degrees per second in a compact, 60-mm-diameter by 8-mm-thick design. Resulting from the successful completion of a Phase 1 SBIR project for the U.S. Navy, the non-inductive rotary actuator module delivers higher power output in a smaller footprint than electromagnetic pancake motors or other piezoelectric actuators. Applications include guided munitions and missile systems, MRI-compatible medical devices, unmanned aerial vehicle (UAV) controls, gimbal systems, and computer equipment.
Click here to learn more.

Image - Engineer's Toolbox: <br>The secret to living hinges that fold flat
Engineer's Toolbox:
The secret to living hinges that fold flat

Living hinges are often used to produce a container and its lid as a single molded part. If properly designed, they can open and close thousands of times without ever losing strength or flexibility. Proto Labs' Gus Breiland, Customer Service Engineering Manager, provides valuable tips on designing these (sometimes thin and fragile) parts.
Read the full article.

Image - Product: Shaft couplings eliminate resonance
Product: Shaft couplings eliminate resonance
Step-Flex, the new class of shaft couplings from Miki Pulley US, eliminates resonance in stepper motor ball screw assemblies. This two-part elastomer-element coupling features an innovative combination of HNBR (black) rubber element flanked by smaller, softer laminated (green) spacers designed to "mechanically tune" the system for optimal performance when a stepper motor is used to drive a linear actuator. This unique design quickly dampens oscillations, thereby suppressing resonance. The coupling's machined aluminum hubs also provide a low moment of inertia.
Click here to learn more.

Image - Product: Customized direct-drive motors
Product: Customized direct-drive motors
Applimotion's Frameless Direct Drive motor kits have been used in custom direct-drive motors for more than 15 years in automation systems, robotics, semiconductor equipment, medical devices, and communication systems. The ULT, UTH, and UTS motor kits can be integrated into an assembly with high-resolution encoders and precision bearings. Some assemblies even include harmonic-drive gearing systems. Custom assemblies can range from 8-mm to 600-mm diameters and torque from .1 to 1,000 NM with unique through-holes, mechanical features, and custom cabling.
Click here to learn more.

Image - Cool Kits: Wireless tactile feedback prototyping
Cool Kits: Wireless tactile feedback prototyping
Texas Instruments' wireless haptic development kit enables easy tactile feedback prototyping for eccentric rotating mass (ERM) motor and linear resonant actuator (LRA) haptic effects in a wide range of applications. Using Bluetooth low energy (BLE) and a free iOS app, the Haptic Bluetooth Kit (DRV2605EVM-BT) enables designers to create haptic sequences and LED patterns for tactile feedback, notifications, and alerts from a pre-licensed library of more than 100 distinct haptic effects, eliminating wires and the need to design haptic waveforms.
Click here to learn more.

Most popular last issue

Image - Tiny inverse-Wankel rotary engine concept is 4-lb powerhouse
Tiny inverse-Wankel rotary engine concept is 4-lb powerhouse
Noise, excessive vibration, and relative inefficiency are drawbacks of the piston-based internal combustion engines (ICEs) that power today's lawn and garden equipment, such as leaf blowers and lawn trimmers. But now MIT startup LiquidPiston has developed a 4-lb rotary concept that it says is significantly smaller, lighter, and quieter, as well as 20 percent more fuel-efficient than the ICEs used in many such small-engine devices.
Read the full article.

Image - Conductive clay aims to shape the future of energy storage
Conductive clay aims to shape the future of energy storage
In the race to find materials of ever-increasing thinness, surface area, and conductivity to make better performing battery electrodes, a lump of clay may have just taken the lead. Materials scientists from Drexel University's College of Engineering invented the clay, which exhibits conductivity on par with that of metals and can be molded into a variety of shapes for easy processing.
Read the full article.

Image - New Mazda MX-5 to feature bio-based engineering plastic that doesn't need paint, even when used in exterior
New Mazda MX-5 to feature bio-based engineering plastic that doesn't need paint, even when used in exterior
Mazda and Mitsubishi together have developed a new bio-based engineering plastic that can be used for both interior and exterior design parts for automobiles. The deep hue and smooth, mirror-like finish of the surface make the newly developed plastic suitable for external vehicle parts with a high design factor.
Read the full article.

Videos+: Technologies and inspiration in action
A good laugh: Top Gear host drives world's smallest production car around the office
It's an oldie but a goodie. Six-ft 5-in. Jeremy Clarkson drives the Peel P50, the world's smallest production car, to work -- and around work -- at the BBC. Yup, the three-wheeler with a moped engine even fits in the elevator.
View the video.

Video Image
World's largest 3D-printed wrench
Looking to fabricate your own 1:1-scale, really large prototype parts? Stratasys has you covered. Unveiled at Euromold a couple years ago, the company's Objet1000 system features a climb-aboard-size build tray (39.3 in. x 31.4 in. x 19.6 in.) and is able to print up to 14 different material properties within a single model. Wow. Fourteen in one model! It can also handle big jobs that you could only dream about in the past, like the world's largest 3D-printed wrench, which Objet's Sam Green says took a few days to print.
View the video.

Video Image

New products

Electrical/Electronics
View Products…
Mechanical
View Products…
Motion
View Products…


Subscribe to DesignFax

For advertising opportunities contact:
John Holmes

E: jholmes@nelsonpub.com

P: (847) 364-7441

Questions or comments about the eMagazine or articles? Contact us at: Designfax

www.designfax.net
PO Box 866, Osprey, FL 34229-0866

webteam@designfax.net
Privacy Statement