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It's the end of May, flower beds must be weeded, there's grass to
cut, and trees need pruning. So put that all out of your mind right now
because your copy of MD Motors Monthly is here!
We start this month by looking at how a motor manufacturer created
3D-printed models of new motor parts for check and verification. Then a
pair of articles take a look at the use of step motors in position
control systems. The video this month also looks at step motors used as
brushless dc motors. And then there's the usual selection of new motor
products.
Finally, social-networking technologies such as blogs, wikis, and RSS
feeds are changing how engineers work. You can join the discussion with
the editors and other readers of MACHINE DESIGN on LinkedIn, Facebook, Twitter, and Second Life as well as our own MachineDesign.com
website.
-- Bob Repas, Editor
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Motor manufacturer Baldor Electric Co., Fort Smith, Ark. has gone to
3D-printed models to test a variety of components, including fans,
conduit boxes, stationary switches, and motor-mounting brackets.
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High Power Density 14" BLDC Ring
Motor
 The TG 14010 BLDC Ring
Motor delivers 50 ft-lbs of peak torque from a 3.7 in. long by 13.55 in.
diameter package that weighs 23 pounds. The motor’s high power to
weight ratio and efficiency makes it ideal for ducted-fan aerial vehicle
(UAV) and unmanned ground vehicle (UGV) applications. Additionally, the
motor's zero cogging capabilities are well suited for direct drive
applications such as semiconductor equipment.
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Stepper motors simplify the design of a machine or mechanism that
requires precise linear positioning because they provide
rotary-to-linear conversion directly inside the motor. The actuators
move a given degree of rotary motion for every electrical-input pulse.
This so-called “stepping” feature and the use of a precise leadscrew
provides precise and repeatable positioning.
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Clever use of a step motor lets the DistaCam record one continuous
image over the entire length of a 66-inch roll of film. Basically a gray
piece of plastic with a narrow slit and a Nikon camera, the setup let
Rick Graves capture not a series of frames but a continuous image on a
single 66-in. roll of film.
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MD's Lee Teschler talks with Dave Coutu from Intelligent Motion
Systems Inc. about stepper motors used as brushless servos. Run time:
7:15
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The modular design of the BX4 Series of brushless dc servomotors
eliminates the need for adhesive-bonded joints. A new four-pole concept
ensures a 12.2-mNm continuous torque, with a flat gradient of the n/M
characteristic curve.
MicroMo Electronics Inc.
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The new SM3416DT -PLS2 Series SmartMotor is a complete, programmable
motion-control system that uses a servomotor, amplifier, encoder, and
motion controller in a single package.
Animatics Corp.
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The KESA37 stainless-steel gearmotor provides motion anywhere
machines and systems must be cleaned intensively. The unit’s special
stainless-steel housing makes it suitable for use in the food, beverage,
and pharmaceutical industries, as well as in constantly wet
environments.
SEW-Eurodrive Inc.
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Machine Design Video Spotlight
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Membrane Switches for
Harsh Environments |
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Joseph Schwartz from The Bergquist
Co. shows Lee Teschler of Machine Design magazine the advantages
of heat-sealed membrane switches over pressure sensitive adhesive (PSA)
membrane switches in harsh environments. |
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UPCOMING WEBCASTS
Understanding Key Power Transmission Technologies:
Comparing Belt, Chain & Gear Drives for OEM Projects
Sponsored by Rexnord
DATE: May 28th, 2009
TIME: 2:00pm ET/11am PT
OEM design teams are under pressure to juggle technologies with
specifications with the outcome always being a great new or improved
product. Many of these projects have Power Transmission components at
their core and the wrong technology can really hurt the end product.
Dennis Missun and Nick Derus from Rexnord have gathered
information about the critical issues that need to be considered when
deciding between belt, chain and gear drive technologies for
applications requiring 5 lbs – 100 lbs of force.
The course will cover
- Torque Density: comparing key rating systems AGMA & ISO
- Application considerations: impact of thermals, friction and
vibration
- Basics of sizing & selection: information to right-size
components
- Other Project/End Customer Considerations
- Live question/answer session with presenters
Click here learn more and to register!
ARCHIVED WEBCASTS AVAILABLE FOR FREE VIEWING
Click
Here for a list of archived Machine Design webcasts.
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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: Robert Repas
216-931-9319
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216-931-9893
Machine Design
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