There are several ways to monitor loads in a press or punch inserting operation. Load washers, while somewhat insensitive to torque or other extraneous loads or moments, can have lower accuracy. Pancake load cells are more accurate but also much larger. A donut or thru-hole load cell offers reduced size with improved accuracy for these measurements.
Using metal foil strain gauge technology, FUTEK’s LTH300 miniature donut/thru-hole load cells address measurements from 50 to 1000 lb. Available in 17-4 stainless steel construction, the low profile (0.028-inch) units’ inner diameters range from 1/8 to 3/8-inch (3.40 to 9.80 mm) and the outside diameter is 0.98 inch (24.9 mm). With a rated output of 2 mV/V, the safe overload is 150 percent, zero balance is ±1 percent, and nonlinearity, hysteresis and non repeatability are ±0.5 percent of the rated output. Units have a nominal deflection of 0.002-inch, weigh only 2 oz (57 gm) and operate over a temperature range of -60 to 200F (-50 to 93C) with a compensated temperature range of 60 to 160F (15 to 72C).
In addition to a standard 10-ft long Teflon shielded cable with mechanical strain relief, available options include in-line signal conditioned, amplified or digital output, as well as an IEEE 1451.4 Transducer Electronic Data Sheets (TEDS) version. Other applications for this design include dual tank level control, tank dispensing and bag-filling machinery.
From home enthusiasts to workers on the manufacturing floor, everyone's imagination is captured by the potential of 3D printing. Prototyping, spare parts creation, art delivery, human organ creation, and even mass product production are all being targeted as current and potential uses for the technology.
Solar and wind energy are becoming more viable as a source of energy on the electric grid. For decades, the major drawback to solar and wind was that they’re temperamental. A cloudy day kills solar and a still day renders the wind turbines useless. Automation tools, however, are providing a path to help these renewables become practical.
In honor of Earth Day, the National Security Agency has launched the STEM Recycling Challenge in Maryland schools to encourage kids to think about where the garbage they throw out every day actually goes. The agency has also introduced “Dunk,” a muscular blue cartoon recycling bin wearing shorts and sneakers.
Samsung's Galaxy line of smartphones used to fare quite well in the repairability department, but last year's flagship S5 model took a tumble, scoring a meh-inducing 5/10. Will the newly redesigned S6 lead us back into star-studded territory, or will we sink further into the depths of a repairability black hole?
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