 |
The Army looks for its next rifle
GIs have been carrying M4 rifles for the past 15 years. But that
should change after a competitive “shoot off” among gun makers
planned for this year. See what our soldiers may be carrying on the
battlefield in the next decade.
|
Updating safety devices for machines with
RFIDs
Guards on potentially hazardous equipment keep people out of
harm’s way or shut down machines if access is needed. Mechanical
safety interlocks and magnetic safety switches are still widely used to
determine the status of access doors and gates. Read how radio-frequency
identification (RFID) could change all this for the better and make us
all safer.
|
|
On Track in 2010 with
UtiliTrak®
 The UtiliTrak linear
guide from Bishop-Wisecarver provides a narrow, compact profile solution
for a variety of environments where smooth, high speed motion is
required -- an ideal choice for running two systems in parallel using
our DualVee® bearing guide wheels and MadeWell® crowned rollers.
Absolute parallelism is not required, as UtiliTrak’s design
compensates for mounting errors. Available in steel or polymer, bridge
connections are also available to further simplify assembly. For more
information, visit www.bwc.com or call 888.580.8272
|
|
Keep your machines AND the environment
clean
Comparing "green" alternatives to chlorinated chemicals shows how
they actually stack up against each other. (This article might not be
brand new, but theinformation is as worthwhile as ever.)
|
Top 10 tips on couplings
Choosing the best coupling for your task means asking the right
questions before laying out any money. But choices abound, and more than
one coupling may suit your application. So let an expert give you some
inside tips on getting the just the right coupling.
|
Cooling down those sleeve bearings
When it somes to sleeve or journal bearings, the lower the operating
temperature, the better. Cooler running extends oil life, reduces
differential thermal expansion, and causes fewer alignment problems.
Here's a look at versious cooling methods, along with their pros and
cons.
|
Servo rod-style actuator
The new integrated-motor actuator (IMA) combines a servomotor with
a rod-style actuator. The IMA’s integrated design provides higher
dynamic performance by eliminating the need for separate motors,
couplers, motor mounts, gearing, and belts.
The actuator provides up to 2,000 lbf of force, high speed (23 ips),
±0.00984-in. positional accuracy, and comes in incremental stroke
lengths from 6 to 18 in.
The IMA is offered with multiple ball-screw leads and a choice of motor
winding voltages. A patent-pending screw lubrication system allows for
easy relubrication without disassembly.
More Information:
Tolomatic
Inc.
|
Slit-type plastic couplings
A new series of slit-type plastic couplings feature UV resistance,
and voltage and RF isolation. The S50TLC... Inch and Metric Series come
in sizes 13, 19, and 25. The lightweight molded coupling replaces
stainless/aluminum slit-type couplings with low cost and improved
operation. There is no windup, backlash, or derating for reversing
applications. A metal screw-to-metal nut design ensures a tight fit
between the shaft and coupling and does not use threads cut into the
molded piece.
Made of engineered polymer with stainless-steel fasteners, the couplings
come in 0.125 to 0.500-in. bore sizes and range in length from 0.710 to
1.400 in. Their maximum temperature range is –4 to 284°F.
More Information:
Sterling Instrument
|
|
|
Thank you for reading the Mechanical Monthly Newsletter from Machine
Design.
This email was sent to #email#. You've received this e-newsletter for
one of two reasons:
1) You signed up for it on one of our web sites.
2) You are a reader of Machine Design magazine.
Manage Your Subscription
To quickly unsubscribe from this newsletter, click here Unsubscribe
To subscribe or unsubscribe, to this or any of our newsletters, visit our subscription page.
To CHANGE YOUR EMAIL ADDRESS, visit our subscription page, login with your
old email address, then change your address.
Contact Information
Editorial questions: Stephen Mraz
216-931-9521
Advertising/sponsorship opportunities: Virginia Goulding
216-931-9893
Machine Design
1300 E. 9th St.
Cleveland, OH 44114
©2010 Penton Media, Inc. All rights reserved.
|
|
