R+W America's new
torque limiter, the SL Series, utilizes a proven spring-loaded ball detent
system, along with a previously patented preload for zero-backlash operation.
To achieve its target of 50-percent weight reduction, R+W embarked on a two-year
collaborative effort with local universities, designing the product from the
ground up rather than simply redesigning or optimizing existing products. The
result is a torque limiter constructed from state-of-the-art materials with
unique surface treatments and innovative assembly technology - surpassing
weight reduction targets and simultaneously reducing its footprint.
In addition to custom material specifications, specially designed spring
systems, and some improvements to the ball detent configuration, resulting in a
40 percent increase in torque capacity for a given size, the weight reduction
was also achieved through the compression of individual components.
The four sizes (Series 30 / 60 / 150 / 300) cover disengagement torque
values from 5 to 700Nm, and involve various mounting options, including both direct
and indirect drive versions. Models SLN (clamping) and SLP (keyway) attach by
flange to sprockets, sheaves, pulleys and gears, and include an integral dual-bearing
system to support belt and chain tension when properly located over the shaft. Models
SL2 (bellows coupling) and SLE (servo insert coupling) mount inline between two
independently supported shafts, such as motor to ball screw connections, and
compensate for the small but inevitable misalignment which exists in this type
of machine layout. All four types are field adjustable, and come with both
English and metric bores according to customer specifications.
The engineers and inventors of the post WWII period turned their attention to advancements in electronics, communication, and entertainment. Breakthrough inventions range from LEGOs and computer gaming to the integrated circuit and Ethernet -- a range of advancements that have little in common except they changed our lives.
The age of touch could soon come to an end. From smartphones and smartwatches, to home devices, to in-car infotainment systems, touch is no longer the primary user interface. Technology market leaders are driving a migration from touch to voice as a user interface.
Soft starter technology has become a way to mitigate startup stressors by moderating a motor’s voltage supply during the machine start-up phase, slowly ramping it up and effectively adjusting the machine’s load behavior to protect mechanical components.
A new report from the National Institute of Standards and Technology (NIST) makes a start on developing control schemes, process measurements, and modeling and simulation methods for powder bed fusion additive manufacturing.
If you’re developing a product with lots of sensors and no access to the power grid, then you’ll want to take note of a Design News Continuing Education Center class, “Designing Low Power Systems Using Battery and Energy Harvesting Energy Sources."
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.