Features

Motion Controller Helps Test for Hard Disk Defects

Hard disks were originally intended for computers in ultra-clean, ultra-safe data offices; by the 21st century, hard disks had moved beyond the office, finding their way into digital cameras, video recorders, PDAs, and cell phones. With the ubiquity of hard disks comes the risk that any number of electronic devices can fail if their hard disk crashes. To detect hard disk defects while still in the assembly stages, THôT Technologies (Campbell, CA) developed the Model 42000, a laser-based test and measurement system for hard drives’ disks, using the DMC 1832 3-axis controller from Galil Motion Control (Rocklin, CA) to help monitor and regulate various systems of the Model 42000 as it conducts testing.

Posted in: Applications, Motion Control, Application Briefs

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Valve Motor

Eaton Corp. (Cleveland, OH) released the HP30 high-pressure disc valve motor for mobile off-highway applications requiring up to 30,000 in-lbs of intermittent torque. Options include a hydraulic parking brake offering up to 3,570 Nm of static holding torque. The device includes bearing pack, break, output shaft, and port mounts. Other features include a no-load pressure drop lower than 200 PSI at 25 GPM of flow. A two-piece balance ring provides mechanical and volumetric efficiencies. Continuous pressure is 170 liters per minute (45 GPM) at 310 bar (45,000 PSI); intermittent pressure is 265 LPM (70 GPM) at 345 bar (5,070 PSI). Maximum inlet pressure is 400 bar (6,000 PSI).

Posted in: Products, Motion Control

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Fringe Tracing Software

Engineering Synthesis Design, Inc. (Tucson, AZ) released the IntelliWave ™ interferometric measurement software package to monitor fringe change in fluid flow and thermodynamic analysis applications. The software allows for parallelism, angle, ROC, tool offset, homogeneity, and absolute measurements. Users can monitor over 30 fringe parameters (area, size, temperature, etc.), and may use any camera or scanner for data acquisition. Features include intuitive user interface, interactive spreadsheets, multi-region unwrapping and masking, real-time user interaction, and classical, shearing and speckle analysis.

Posted in: Products, Motion Control

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Rotary Stages

Aerotech (Pittsburgh, PA) released the ALAR series of direct-drive, large-aperture rotary stages. Coming in five aperture sizes (100, 150, 200, 250, and 325 mm), the units are designed for angular positioning and velocity control, and feature zero backlash, no gear wear, or gear vibration. Features include 45 – 300 rpm continuous rotation speed, continuous or limited travel, axial load capacity of 300 – 1,000 lb, and low wobble. Vac 10 – 6 torr compatible versions are available. The stage is 65 – 160 mm tall. Two configurations, standard profile (SP) and low profile (LP), are available.

Posted in: Products, Motion Control

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Ball Bearing Mounts

Asymmetric Fasteners, Inc. (Hackettstown, NJ) released the Torksleeve B mounting for ball bearings, compatible with roller, needle, linear, or plain bearing types. The unit provides quick assembly time, is compact, and lightweight. The unit also rebuilds in the field, and mounts to metal or plastic walls. The asymmetric thread design self-locks and is resistant to vibration. Tightening of the nuts causes the slotted sleeve to contract, gripping the bearing and clamping the unit to the frame.

Posted in: Products, Motion Control

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The Problems With CAD Tools: Vendors Address User Pain Points

CAD systems can be a design engineer’s best friend or their worst enemy. They help engineers create better products faster, but can prove daunting and frustrating in the process.We spoke to executives at several CAD companies to find out how they are helping their customers get past issues of ease of use, collaboration, and functionality, as well as other pain points users are still facing with their CAD tools.

Posted in: Articles

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30 Years of Power & Energy

In celebration of the 30th Anniversary of NASA Tech Briefs, our features in 2006 highlight a different technology category each month, tracing the past 30 years of the technology, and continuing with a glimpse into the future of where the technology is headed. Along the way, we include insights from industry leaders on the past, present, and future of each technology. This month, we take a look at the past 30 years of Power & Energy Technology.

Posted in: Articles

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