Good for simple applications like automotive power window actuators, or demanding duty in heavy or high-precision machinery, this new screw drive offers low-friction, vibration-free operation, high force magnification, and the ability to accept input speeds exceeding 20,000 rpm.
Fine-pitch spindle threads, corresponding grooves on the rollers, and additional coarser roller grooves transmit force to the nut. Design options permit a wide range of feeds per revolution. These include rollers with circular grooves for both nut and spindle engagement, or rollers with threads engaging the spindle and circular grooves engaging the nut.
In addition, hollow-shaft motors can be installed directly on the nut, making a self-contained actuator with a power/weight ratio similar to or better than hydraulic actuators.
George Jaffe, Schneeberger Inc., 11 DeAngelo Dr., Bedford, MA 01730; Tel: (617) 271-0140.
Gigabit and PoE are two networking technologies moving ahead in tandem as industrial users power remote Ethernet devices such as IP security cameras at 1,000 Mbps over existing CAT5 cable.
New disc magnet motors fit into the design trend of stepping up to closed loop performance while maintaining the cost advantage of stepper motor technology.
At the Design News webinar on June 27, learn all about aluminum extrusion: designing the right shape so it costs the least, is simplest to manufacture, and best fits the application's structural requirements.
A new battery design, which replaces lithium with abundant and low-cost elemental sulfur, is still in its nascent stages but shows real promise for giving batteries more energy potential.
From Dell / Intel® New Paradigms in Design Work Scott Hamilton, vertical market strategist for Dell Precision workstations, 5/2/2013 5
Early in my career, I worked as a draftsman and remember the days of drawing on vellum with numbered pencils and Mylar with plastic lead. This was a fun experience in the sense that I ...
I've been using workstations for more than 10 years and love finding ways to get more performance from my system. With demanding professional applications that require more power each ...
A lasting memory from my first job as an engineer in an auto assembly plant is standing on hard concrete at six in the morning, vending-machine coffee clutched in hand, listening to ...
For industrial control applications, or even a simple assembly line, that machine can go almost 24/7 without a break. But what happens when the task is a little more complex? That’s where the “smart” machine would come in. The smart machine is one that has some simple (or complex in some cases) processing capability to be able to adapt to changing conditions. Such machines are suited for a host of applications, including automotive, aerospace, defense, medical, computers and electronics, telecommunications, consumer goods, and so on. This radio show will show what’s possible with smart machines, and what tradeoffs need to be made to implement such a solution.
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