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Tips for working with rack-and-pinion
drives
Getting the right rack-and-pinion drive depends on three factors:
application, required accuracy, and budget. Here are some tips and
tactics that should help you get the right drive the first time.
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Death by floor mat?
Check out Leslie Gordon's blog regarding her near-death experience,
all thanks to a floor mat. And send in your own car-related snafu. You
may win a fabulous prize!
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Motion Resource Center
 Every solution
requires the right tools to get the job done correctly. Danaher Motion
has created a web page with descriptions and access to motor
sizing/selection software, on-line servo technology database, an
engineering toolbar for various calculations and more. The site even
has more details concerning a Motion Control Handbook that will be a
great resource even when a computer with web access is
available.
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Bellows, couplings, contacts, and
electroforms
Precision, electrodeposited nickel bellows, flexible shaft
couplings, electrical contacts, and lightweight, structurally rigid
electroforms are available.
Custom-designed miniature nickel-alloy metal bellows can be made as
small as 0.020 in. in diameter while retaining full sensitivity and
flexibility. The seamless and nonporous bellows resist dust, dirt, and
moisture contamination in critical applications, such as metallic
hermetic seals, volume compensators, pressure and temperature sensors,
and flexible connectors.
Zero-backlash, flexible-shaft couplings are precise rotary-positioning
systems where flexibility, sensitivity and extreme accuracy in
dimensional tolerances and concentricity are critical. The couplings
have a 1.4 to 198-Ncm torque range; 0.252 to 2.40-in. OD; and overall
lengths from 0.5 to 2.44 in.
Self-aligning spring contacts meet critical solderless connection needs
in miniature electronic applications. The contacts OD ranges from 9.037
to 0.245 in.
Lightweight, structurally rigid electroforms are suitable for
applications requiring unusual shapes, close tolerances, high strength,
ultrathin walls, and extreme temperatures to –423°F. Diameters
range from .020 to 9 in. and surface microfinishes as fine as 4 R.M.S.
are also available.
More Information:
Servometer/PMG
LLC
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Synchronous drives
The dual-sprocket design of Synchronous Plus synchronous drives
feature both metric and standard-tapped holes coupled with a
high-capacity Synchronous Plus belt, resulting in 50% more horsepower
capacity than standard-construction, high-torque drives. The design
allows for the use of smaller, lighter-weight sprockets which, in many
sizes, are drilled for both inch and metric hardware.
Synchronous Plus belts feature helically wound, extrastrong fiberglass
cords that are chemically treated and designed for length stability,
maximum flexibility, and high-tensile strength for shock loads.
Belt teeth are molded with the backing to protect the tensile members.
Teeth and backing components are made from synthetic rubber for heat,
oil, ozone, and flex-fatigue resistance. Precise tooth formation and
accurate spacing permit quiet, smooth, uniform transmission of power
with resistance to tooth jump and shear.
The belt is constructed of nylon-cover fabric for maximum drive
efficiency and exceptional resistance to tooth wear and shear from
friction. Load capacities are available for a wide range of torque
loads.
More Information:
TB Woods Inc., an Altra
Industrial Motion Co.
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Check Out the New EET Website
Are you looking for more information on energy efficiency? EETweb.com
features the latest efficiency updates, information on the basics of
energy efficiency and products available for energy efficient designs.
Click here to
visit the site and learn more!
Now Available On-Demand
The Energy Efficiency Web Conference & Expo
Engineers saw and heard great educational content at the Energy
Efficiency Web Conference and Expo. If you missed the live virtual
event, don’t despair! An archive of the full day’s agenda is now
available.
Design engineers are required to integrate energy efficiency into their
designs while maintaining lower costs, the highest reliability or both.
The editors of Machine Design understand these challenges
and have developed this conference to help engineers understand the
recently imposed energy mandates. The information presented at this
educational event will help engineers compare the different technologies
and product related to energy efficiency. Attendees will gain access to
the technical information needed to help them make the best decisions
without having to travel or take time away from current projects.
Visit the archive to:
- View informative webinars on energy efficiency
- Visit interactive booths where you can contact suppliers
- Peruse the Resource Center where you can download or link to
additional pertinent energy efficiency information
Register Now!
ARCHIVED WEBCASTS AVAILABLE FOR FREE VIEWING
Click
Here for a list of archived Machine Design webcasts.
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PT Pilot® Custom Online Drive Selection
Access SEW-Eurodrive's extensive catalog of gearmotors, drives and
motion controllers by entering either the horsepower or speed
requirements of your application. PT Pilot® quickly moves through a
series of point-and-click screens to select the components that best fit
your application needs. Login to PT Pilot® at www.ptpilot.com.
Motor Sizing & Selection
Use project specs to nail down the brushless, DC servo, and/or stepper
motor along with drive products....from Danaher Motion.
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Contact Information
Editorial questions: Stephen Mraz
216-931-9521
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216-931-9893
Machine Design
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