September 23, 2010 A Penton Media Publication Tune in to EngineeringTV.com REDESIGNING WITH PEEK, page 22 MULTIPHYSICS MODELS MAKE BETTER BIODEGRADABLE IMPLANTS, page 38 SMART INSTRUMENTATION COULD YIELD WIND TURBINES THAT NEVER FAIL, page 42 Got Smarts? www.smartestdesignengineer.com Where Do I Go for Pressure, Strain and Force Products? omega.com, of Course! Your single source for process measurement and control products! All Stainless Steel Load Cells Environmentally Protected Load Cells STANDARD and METRIC Models LCCD/LCMCD Series Tension/Compression 0-25 lb to 0-20,000 lb 0-10 kgf to 0-5000 kgf LCCD-2K 425 $ LCCD-50 $ 360 Visit omega.com/lccd Low-Profile Pancake Style Load Cells STANDARD and METRIC Models LCHD-5K $765 FREE! 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For Sales and Service, Call TOLL FREE Cover Art: Based on an Original Norman Rockwell illustration © The Curtis Publishing Company Dilbert © United Feature Syndicate, Inc Shop Online at ucts All ProdProudly Shown RS# 101 © COPYRIGHT 2010 OMEGA ENGINEERING, INC ALL RIGHTS RESERVED From napkin sketch to prototype in just weeks Let’s see what we can create in SolidWorks ® You and your fellow designers are going to help Jeremy create some never-before-built products You’ll submit projects, share design ideas and vote on key design decisions If you think you’re ready, let’s go design Watch Share Vote LetsGoDesign.tv Jeremy Luchin i SolidWorks is a registered trademark of Dassault Systèmes ©2010 Dassault Systèmes All rights reserved DESIGN TEAM LEADER SolidWorks Ce rtified esign.tv LetsGoD presented by RS# 102 VOLUME 82 ISSUE 16 SEPTEMBER 23, 2010 CAD/CAM/CAE Authored by: Molding Mark Yeoman R&D Director Continuum Blue Ltd United Kingdom parts Edited by Leslie Gordon leslie.gordon@penton.com Resources: that are Continuum Blue Ltd., www.continuum-blue.com Comsol Inc., www.comsol.com designed to FEATURES redesign with PEEK 22 Smart keeps neutron source cool A single-piece machined PEEK cooling jacket replaces two polycarbonate components in a highenergy neutron-beam source degrade A multiphysics model of biodegradable implants better predicts 3D dualpolymer injection and the control of the injection profile Under normal conditions, the organs of the human body self-regulate and heal when damaged But when the damage is more severe, it is not always easy in today’s rapidly paced society for patients to get enough rest for the body to heal fully This is certainly the case when soft tissue such as the ligaments around joints is damaged In these instances, it is best to implant ligament-augmentation systems to stabilize the joint, allowing the body to heal fully Some of these implants are only needed for short periods until they have served their purpose This leaves the problem of what to with the implant when it hinders full motion in the joint at a later stage It is almost impossible to remove soft-tissue implants, which are traditionally made of fabrics or biotextiles However, the development of specialized hyperelastic polymers makes possible soft-tissue implants which perform mechanically as required for a short period of time to stabilize the joint They then biodegrade naturally, eliminating the need for surgical removal 38 MACHINE Design.com A fabric-based LARS implant is located in a shoulder joint Note the two screws in the bone that anchor the fixation holes at one end of the implant For many of these implants, a single elastomeric material is not sufficient Consider, for instance, a rotator-cuffligament replacement and augmentation system (LARS) The implant must be flexible enough to let the patient easily move their arm without restriction At the same time, it must make the joint stable enough for patients to support objects and hold them steady One of our customers has developed an innovative SEPTEMBER 23, 2010 TEST & INSTRUMENTATION INDUSTRY FOCUS Authored by: Prof Jay Lee COMING: Ohio Eminent Scholar and L.W Alter Chair Professor Dividing operating data into regimes Wind turbines 52 Hydraulic fluids that improve fuel economy Multigrade hydraulic fluids aren’t cheap, but they can save thousands in fuel costs Got Smarts? Find out at www.smartestdesignengineer.com Center for Intelligent Maintenance Systems University of Cincinnati Cincinnati, Ohio Edited by Leland Teschler leland.teschler@penton.com that never fail The idea of reducing breakdowns to nearly zero is unheard-of in the wind industry But that’s where a technique called “condition-based monitoring” could ultimately lead In these recessionary times, it’s nice to know there is at least one industrial area seeing brisk growth: Estimates are that the wind-energy industry grew in the U S by a rate of 29% from 2002 to 2007 The U S became the world leader in wind-energy generation by the end of 2008 And the Global Wind Energy Council reports that the wind-energy generating capacity installed in the U S at the end of 2008 was approximately 21% of the total world generation According to the American Wind Energy Association (AWEA), the total wind power capacity operating in the U.S as of first quarter of 2010 is over 35,600 MW, generating enough to power the equivalent of 9.7 million homes If we are to maintain this rapid pace, it is essential that wind turbines be reliable Increasingly, the wind industry 42 MACHINE Design.com Mohamed AbuAli Postdoctoral Researcher the air 48 Clearing Advanced hydraulics helps mobile equipment meet tougher emissions standards A multiphysics model of biodegradable implants better predicts 3D dual-polymer injection 38 Wind turbines 42 Coming: that never fail A new approach to wind-turbine maintenance uses instrumentation to collect information indicative of a turbine’s level of performance and health The idea: eliminate downtime all together Biotextile implant Molding parts that are designed to degrade recognizes that better reliability can come from applying to wind-turbine components some fundamental research in what’s called condition-based monitoring Such research would be instrumental in determining the efficiency of power-generation schemes and in supporting the creation of advanced windmill designs The Center for Intelligent Maintenance Systems (IMS) is actively pursuing the idea that condition-based monitoring can enable wind turbines and wind-farm systems to reach and sustain near-zero breakdown performance Such a feat would ultimately transform traditional wind-industry maintenance from “fail-and-fix” practices to “predict-and-prevent” operations To this end, the Center is focused on cutting-edge technologies in embedded and remote prognostics and health management In this SEPTEMBER 23, 2010 Key points: • Techniques originally aimed at predicting when factory-floor equipment would fail are now being applied on wind turbines • A toolbox of algorithms, collectively dubbed a Watchdog Agent, converts sensor data and operating conditions to useful information that eliminates the need for “fail-and-fix” maintenance in wind turbines Resources: The modeling of a wind turbine for predictive maintenance starts with the collection of data, including those indicating real-time system operating conditions, and using them to identify the system’s regime of operation With the operating regime identified, the data goes into the corresponding prognostics model that has either been established, or will have to be created for a newly learned operating regime regard, it has also coined and trademarked the term Watchdog Agent prognostics tools and Device-to-Business (D2B) Infotronics platform for e-maintenance systems The Watchdog Agent is basically instrumentation capable of converting sensor data and operating conditions to actionable information This information is indicative of a machine’s level of performance and health The Watchdog Agent monitors how fast components are degrading, predicts the likelihood of failure and the health of a machine This approach is called predictive maintenance, or prognostics Prognostics is a lot more than merely collecting the kind of data normally associated with IMS Center Web site, http://www.imscenter.net/ The Quest for Zero Downtime, http:// machinedesign.com/article/the-quest-for-zerodowntime-0607 Wind Turbine Prognostics and Health Management (WT-PHM) demonstration platform, http://www.imscenter.net/windturbinephm Preparing wind-turbine data for visualization Wind-turbine behavioral tools may include routines for feature extraction, health assessment and fault diagnostics, which have been studied and applied intensively by the IMS center for common rotary machinery components, such as gearboxes and bearings The results get displayed in visualization tools for degradation assessment and monitoring SEPTEMBER 23, 2010 42 Access our Reader Service Web site to quickly find and request information on the products and services found in the pages of MACHINE DESIGN www.machinedesign.com/rsc MACHINE Design.com 43 Along with our great prices, you get: Proximity • • • • • • • • • Inductive, capacitive and ultrasonic technologies mm to 30 mm round with standard sensing distance mm to 30 mm round with double/triple 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www.automationdirect.com/sensors SENSORS CHECK OUT OUR PRICES PROXIMITY mm three-wire DC shielded with M8 Q/D 18 mm three-wire NPN DC shielded with meter cable 18 mm AC shielded with meter cable AutomationDirect Allen-Bradley $35.50 $124.00 PD1-AP-1F 871C-D1NP5-P3 $18.50 $78.00 AK1-AN-1A 872C-DH5NN18-E2 $31.00 $95.00 VK1-A0-1B 872C-A5N18-A2 *All prices are U.S published prices AutomationDirect prices are March 2010 prices Allen-Bradley prices taken from http://shop.rockwellautomation.com, September 29, 2009 Specifications may vary by dealer and configuration Prices subject to change without notice www.automationdirect.com Go online or call to get complete information, request your free catalog, or place an order 1-800-633-0405 RS# 103 ON THE COVER Skid-steer loader equipped with Bosch Rexroth hydraulics DEPARTMENTS READER SERVICES EDITORIAL Trying to be innovative is like trying to be taller 10 EDITORIAL STAFF 12 LETTERS 18 SCANNING FOR IDEAS Eight-axis robot feeds the machines Antivibration mounts meet military needs 22 REPORTER’S NOTEBOOK 26 LOOKING BACK 32 BERKE ON SAFETY Analyzing conveyor design for safety 34 OEM SERVICES Making sure the design is right 36 INVENTOR’S CORNER Air-powered retractor pulls out nails almost instantly 46 WORLD’S SMARTEST DESIGN ENGINEER 56 FLUIDPOWER PRODUCTS 58 FE UPDATE Seat of the pants? Not when it comes to simulating occupants in cars 62 PRODUCT SPOTLIGHT Sensors & switches 64 66 67 69 70 70 PRODUCTS BUSINESS INDEX DATA FILES AD INDEX BUSINESS STAFF BACKTALK MACHINE Design.com SEPTEMBER 23, 2010 Letters to the editor: Please include your name, address, and daytime phone number Letters may be edited for brevity and to focus on essential points Mail: Letters, MACHINE DESIGN, 1300 E 9th St., Cleveland, OH 44114-1503, Fax: 216-621-8469 E-mail, Editorial: mdeditor@penton.com Online forums: To comment on articles, editorials, and other engineering topics, go to http:// community.machinedesign.com/ forums/157/ShowForum.aspx and log in Questions about articles: Denise Greco, 216-931-9402, denise.greco@penton.com, Fax questions about releases & literature to 913-514-6694 Subscriptions: For a subscription qualification form, see our Web page at submag.com/sub/mn Subscription problems or questions: Contact a customer service representative at 866-505-7173 or e-mail: machinedesign@halldata.com Order a paid subscription: 847-763-9670 Circulation: machinedesign@halldata.com Editorial reprints: Contact Joel Kirk, 216-931-9324, joel.kirk@penton.com or visit pentonreprints.com List rentals: Marie Briganti, 877-796-6947, mbriganti@meritdirect.com Effect Cause -79% When using ebm-papst ACi 4400 axial compact fans instead of conventional AC fans in control cabinets, energy costs can be reduced by 79% GreenTech stands for climate protection that benefits more than just the environment Consistent use of ebm-papst fans with EC technology can radically reduce the power consumption compared to AC fans - and that pays off In an average sized factory building with 50 control cabinets and filter fans in continuous operation for example, 6.5 MWh of energy can be saved annually After only 4-6 months the additional investment will have paid for itself This reflects our simple yet firm philosophy: Each newly developed product must exceed the economic and ecological performance of its predecessor www.ebmpapst.us/greentech ACi 4400 The engineer’s choice RS# 104 What’s new online machinedesign.com NEW VIDEOS Fast and accurate conveyors An engineer from MagneMotion explains state-of-the-art ways to convey small-payload packages, including a demo of the MagneMover Lite It uses linear motors for high throughput and positioning to 25 µm in assembly operations, lab-automation processes, and transport of biomedical, pharmaceutical, and consumer products Materials testing update An expert from Instron looks at material-testing devices for biomedical applications, including the nuances in software and load cells that are specifically designed for accurate material testing We also demonstrate electromechanical devices for cyclic, tension, and compression testing View these and many others at the Videos section of http://machinedesign.com Free Programmable Controller Webinars Attend live or view prerecorded Webinars on the latest controllers from AutomationDirect UPCOMING LIVE SEMINARS: Reconnaissance Throwbot EDITOR’S WEB PICKS The Recon Scout Throwbot is a mini, mobile robot designed to be thrown through windows, doors, or even dropped from unmanned aerial reconnaissance vehicles The Throwbot then rights itself and maneuvers around obstacles to explore hostile or dangerous environments and deliver stealthy, real-time video for military and police operations View the episode to learn more at http://engineeringtv.com Prototypes in 24 hr Guide to medical motion Haydon Kerk Motion Solutions lets customers order online from a standard list of prototype parts that ship within 24 hr Engineers can quickly get off-the-shelf linear-motion components for concept testing, and custom parts are available in a matter of days Products include hybrid, canstack, and other linear actuators, precision leadscrew assemblies, linear-rail systems, and drives Visit http://prototypes.haydonkerk.com Thomson’s Medical Motion Optimized guide discusses medical applications such as diagnostics/ treatment, patient handling, rehabilitation equipment, and lab automation It also details products for medical equipment, such as linear bearings and guides, profile rails, lead and ball screws, clutches and brakes, gearheads, and linear actuators Request or download a copy at http://literature.thomsonlinear.com E-M linear actuators Solar tracking software Warner Linear’s new Web site, www.warnerlinear.com, provides information on electromechanical linear actuators and controls for light to heavy-duty applications The site features an eCatalog and product locator that lets users see and compare specs, view and download 2D PDF dimensional drawings and 3D models in various formats, and submit RFQs Plus a literature portal contains catalogs, brochures, application profiles, magazine articles, and service manuals Beckhoff Automation’s TwinCAT Solar Position Algorithm library calculates sun angles anywhere in the world, anytime, without sensors It calculates zenith and azimuth angles of the sun within ±0.001° based on time and location, plus additional factors such as height above sea level, ground slope, and air temperature and pressure It is suited for parabolic mirror and photovoltaic systems as well as building automation Visit www beckhoff.com for more details MACHINE Design.com SEPTEMBER 23, 2010 Productivity3000 Overview This show features our newest Automation Controller, the Productivity3000 In this supercharged seminar, we cover all the best features of Productivity3000 in 40 We show you where to find more information and how to take advantage of the FREE software A live question and answer session closes the session September 22, 2010, 2:00 ET Productivity3000 Advanced I This recent, 40-min Webinar shares in-depth programming tips and tricks on software for the Productivity3000 programmable controller We cover time-saving suggestions and advanced programming techniques, as well as show program examples that are common on simple automation controls We also conduct a question and answer session at the end of the show Or, at your convenience, view over 30 already-recorded webinars on topics that include HMI, drives, motors, sensors, and circuit protection Visit www.automationtalk.com to view the complete schedule, register for live events, or view prerecorded Webcasts RS# 105 FE UPDATE the chassis to the seat and eventually to the driver and passengers For static and dynamic analyses, Wölfel engineers use Abaqus Standard, which is based on an implicit solver scheme The static analysis uses a nonlinear solver and the dynamic analysis a steady-state solver in the frequency domain Four CPUs with about 64-Gbytes total RAM and the Linux 64bit O/S powered the calculations Seating-comfort analyses using a “homogenized” version of Casimir, in which different tissues like fat and muscles are not differentiated, have shown good correlation with real measurements The tool helps engineers zero-in on features, compare different designs, and rapidly optimize designs for both static and dynamic comfort Simulation minimizes the need for expensive physical prototypes “Designing and building a single hardware seat prototype can cost €10,000 to €20,000 and take several days to weeks, but Abaqus model setups take less than The detailed finiteelement model shows the abdominal muscles, lumbar spine, and pelvis of Wölfel’s body model used in car-seat simulations a day,” says Alexander Siefert, assistant manager for Seating Comfort and Biomechanics at Wölfel “Car-seat development always involves more than one design iteration, so the cost savings that simulation provides can be significant.” Yet more realistic models and simulations Casimir has already supported better designs and improved comfort, but BODY ARMOR FOR SWITCHES Standard black or gray or matched to any color Back-up secondary seal NEMB produces precision miniature balls from 007" to 160" diameter in virtually all machinable materials An ISO 9001:2000 certified manufacturing process ensures consistent quality Molded-in mounting nut 100,000 actuations Patented perimeter sealing rib prevents leakage past mounting hole No O-ring required IP66/68 Rated High tear-strength hostile environment-resistant silicone rubber Temperature range -94°F to +400°F � ® C UL RecognizedUS Call/click for catalog & samples Switch/Circuit Breaker housing HEXSEAL HERMETIC BOOTS DEFEND AGAINST HOSTILE ENVIRONMENTS ® Call us to receive a FREE sample packet 860-542-5543 or visit our website at HEXSEAL boots increase reliability & prolong life by hermetically protecting unsealed switches, circuit breakers, potentiometers and encoders from hostile contaminants & actuator-function interference by blocking water, dust, dirt, ice, solvents, etc Many HEXSEAL® sealing boots can also suppress EMI/RFI Meets MIL-B-5423 specs Toggle, pushbutton, rotary, rocker & armored versions 800.498.9034 www.apmhexseal.com APM HEXSEAL® The World’s Most Hostile Environments Are Our Proving Grounds® www.nemb.com RS# 138 60 MACHINE Design.com RS# 139 SEPTEMBER 23, 2010 Wölfel engineers thought the model could even better “So we added anatomical data to Casimir that let us make more accurate simulations,” says Siefert First, the engineers developed a continuum model of the thigh and buttocks area, which represented the fat, muscles, and skin separately To make the model more realistic, they took data from the U S National Library of Medicine’s Visible Human Project (photographs of 600 cross sections at 1-mm-thick intervals, supplemented by CT and MRI images), assembled the 2D cross sections using SCAN-IP, and imported the digitized anatomy into the model The result was more-lifelike 3D muscle volume detail The engineers then meshed the model with the HyperMesh preprocessor, using linear tetrahedron elements with a typical size of about 20 mm and only 47K DOF for the buttock tissue, to shorten computation time Wölfel engineers also developed a discrete muscle model that more accurately represents the complex musculoskeletal behavior of the hip and thigh Starting with a standard anatomy atlas as reference, they used spring and damper elements (similar to those used in automotive fatigue analyses) to simulate active muscle behavior To define the muscle’s line of action, the engineers used strings And around the joints, where the muscle action is most complex, they defined a muscle path (the shortest distance over the joint) and attached it by connector elements to the skeleton Applying the model in standard simulations showed that muscle activity influenced seating comfort Flexing the thigh-buttock muscles caused a reduced rotation of the pelvis and a higher compression on the intervertebral discs of the lumbar spine In addition, engineers established that these internal forces, which can cause low-back pain, were accentuated at the human body’s 5-Hz natural resonance, a frequency excited by normal driving conditions The analyses guided the engineers in how to improve seat designs For example, when a driver pushes on the gas and brake pedals, the muscles of the leg flex and stiffen, which affects seat comfort Passengers, on the other hand, are more passive and usually not activate their leg muscles This has let Wölfel use the original homogeneous model for passenger simulations and the enhanced model for driver simulations Enhanced simulations provide more-accurate guidelines for improving driverseat designs, such as adding length to the seat to better-support the thighs MD FLAME RESISTANT Epoxy Meets UL94V-0 Specs Master Bond EP21FRSPLV • Room temperature curing • Convenient one-to-one mix ratio by weight • Superior durability • High bond strength • Outstanding chemical resistance • Complies with UL94V-0 flame retardant specification • Official UL temperature rating of 90°C • Easy application - convenient packaging 154 Hobart Street • Hackensack, NJ 07601 Tel: 201-343-8983 • Fax: 201-343-2132 www.masterbond.com • main@masterbond.com We solve problems RS# 140 New ACE Controls AGS GAS SPRINGS provide controlled motion for lids, hoods, hatches, machine guards, panels and more Offered in a wide range of body sizes, stroke lengths and forces · · · · Solid, Long Life Construction Push & Pull Type Designs Fixed Force or Adjustable Models Variety of End Fittings & Mounting Brackets Aerospace, Defense, Transportation, RV, Medical, Furniture, Packaging, Printing, Amusement and More Product Information Available Online Farmington Hills, MI 48335 tel: 800-521-3320 fax: 248-476-2470 e-mail: shocks@acecontrols.com acecontrols.com RS# 141 EPOXIES • SILICONES • POLYURETHANES • CYANOACRYLATES • UV CURES SeptembeR 23, 2010 mACHINe Design.com 61 SPOTLIGHT SENSORS & SWITCHES Photoelectric sensors for web and object-edge detection Reflex array sensor EdgeMaster photoelectric sensors detect and monitor web or object edges The sensors help reduce or eliminate problems such as skew, material shifts, object alignment, and web material drag or stretch, thereby increasing output and lessening changeover times EdgeMaster sensors come in four types: The BAV MA Series, with fixed dual optical-axis edge detection, provides two independent discrete outputs to show edge-position change The BGL C Series is a photoarray sensor for proportional analog or dual discrete outputs based on the amount of light blocked by the edge of the material inside the sensors’ viewing area, with a 0.08-mm resolution The BOL 27 version projects a 150 mm line of light over an edge against a reflective tape to provide an analog and discrete output for accurate position feedback The BGL 21 is suitable for contrast mark or label detection in high-speed web-based applications Balluff Inc., 8125 Horton Dr., Florence, KY 41042, (800) 927-9654, www.balluff.com/Balluff/us/NewsChannel/News/en/Edgemaster+ photoelectric+sensors.ht?pr=edgemaster RS# 446 The WL27-3 reflex array photoelectric sensor provides leading and continuous-edge detection of irregularly shaped objects, pallets, and multiheight objects The sensor detects objects 12 mm or larger with its 50-mm detection height, regardless of the object’s properties or position within the array — including clear materials The unit’s “reflex” (ret- Reset switches The LF Series of compact reset switches feature low operating force for ease of use and precision in activation The LF Series has a quick-make/quick-break mechanism for reliable positioning The operating force of the RoHScompliant switches is 0.53 oz/15 gm and 0.35 oz/10 gm Additional features include an electrical life of 100,000 cycles at A @ 250 Vac, a movable contact of fine silver with a stationary contact of fine silver on copper alloy, and an operating temperature range of –40 to 95°C C&K Components, 15 Riverdale Ave., Newton MA 02458, (617) 969-3700, www.ck-components.com/lf/snap-acting,10547,en.html RS# 447 62 MACHINE Design.com SEPTEMBER 23, 2010 roreflective) mode results in only having to mount and power a single device An intuitive alignment/teach procedure quickly ensures the device is operating correctly A high-resolution version offers a minimum detectable object resolution down to mm with 24-mm detection height Sick Inc., 6900 West 110th St., Minneapolis, MN 55438, (952) 941-6780, www.sickusa.com RS# 448 Foreground suppression sensor Sensors with weld slag and spatter protection The World-Beam QS18 foreground suppression sensor detects objects regardless of color, reflectivity, surface irregularities, and background conditions The sensor operates in diffuse mode, detecting light returned by the background, but ignoring light returned by the object The sensor comes in two adjustable cutoff ranges: 15 to 40 mm and 30 to 200 mm The short-range models are for detecting thinner objects that are closer to the background Additional features include reliable detection when a fixed background is present and the object color or shape varies; objects detected to the face of the sensor (no dead zone); simple multiturn screw The BIM-UNR and BIM-UNT magnetic-cylinder position sensors and Q-pak proximity sensors now feature WeldGuard protection, making them impervious to weld slag and spatter from MIG and TIG welding The adjustment of cutoff distance; cross-talk immunity algorithm lets two sensors to be used in close proximity; and a visible red emitter for simple sensor alignment Banner Engineering Corp., 9714 Tenth Ave N, Minneapolis, MN 55441, (888) 373-6767, www bannerengineering.com RS# 449 tion via informaeb site at e e r f t s Reque der Service W sc o u r Re a n.com/r w w w.m achine desig protective material is applied to the sensors’ faces, and protective sleeves are also available to protect the attached connector and cordset The BIM-UNR sensors mount within C-groove cylinders, and the BIM-UNT mounts in T-groove, dovetail, or tie-rod pneumatic cylinders without requiring additional tools or accessories The Q-pak uprox+ factor proximity sensors feature an extended sensing range of mm for all metal types, including copper, aluminum, and stainless steel Turck, 3000 Campus Dr., Plymouth MN 55441, (800) 544-7769, www.turck.us RS# 450 Switches An updated product catalog details the company’s Microprecision brand of standard and custom switches, which include microswitches and sealed position switches Products include snap-action switches with a power rating from to 15 A and forced break security switches, which are IP67 sealed against water and dust Wilbrecht Ledco Inc., 1400 Energy Park Dr., Suite 18, St Paul, MN 55108, (888) 323-8751, www.wilbrechtledco.com RS# 451 SEPTEMBER 23, 2010 MACHINE Design.com 63 PRODUCTS & LITERATURE Data-acquisition instrument The DEWE-50-USB2-8 is a USB-based data-acquisition system with plug-in signal-conditioning modules for low and high voltages, strain, pressure, acceleration, sound, temperature, and force The unit’s digitizer features eight separate 24-bit ADCs — one per analog channel — for simultaneous sampling of all channels with very-high resolution on the vertical axis This also permits the use of a single gain setting for widely varying signals Any combination of eight DAQP HERNONđ Fusionbondđ ISO9001 Extreme Strength Adhesive • Wide Variety of Substrates • Moisture and Chemical Resistant • Easy 1-to-1 Mix Ratio Fusionbond™ is a two-component, methacrylate adhesive that is specially formulated to bond diverse substrates such as ABS, Nylon, PVC, Gel Coats, PBT blends, Steel, Teflon, and more Overlap shear strength ranges from 950 psi on polycarbonate substrates to 5000 psi on abraded steel coupons According to tests conditions as described in ASTM D2094, Fusionbond™ features tensile strength greater than 4000 psi Bonds Stronger Than Steel Hernon can provide a complete adhesive or sealant system including robotic dispensing systems Discover the cost savings in replacing your current adhesives and sealants HERNON® MANUFACTURING, INC toll-free 866-844-0610 hernon.com • Made in U.S.A Circle 142 MACHINE Design.com Strain-relief fitting The Hummel HSK-Diamond zincnickel-plated-brass strain-relief fitting is an alternative to stainless steel The device is much more corrosion resistant than nickel-plated brass and is suitable for saltwater environments, Request a free sample hernon.com/fusionbond toll-free 866-844-0610 With over 5000 products Hernon Manufacturing has the right adhesive or sealant for your application 64 Series plug-in modules plug into the unit’s front, while the rear panel provides two synchronous counter inputs; two high-speed CANbus interfaces; and the dc power input connector, as the system runs from 10 to 30 Vdc directly (ac/dc adapter and line cord included) Dewetron Inc., 10 High St., Suite K, Wakefield, RI 02879, (401) 284-3750, www.dewamerica.com RS# 465 SEPTEMBER 23, 2010 contaminated and ozone-loaded air, pollution-control equipment, and metrological equipment Technical specifications include a pressure rating of 15 psig (10 bar) NEMA-4X & (submersible) – IP68/ IP69 K; spline bushing and form seal of nylon 6/6, V0: flame resistant, Halogen and phosphorus-free, self-extinguishing, and nontoxic; and O-ring and seal ring of Buna-N/polyethylene, Viton (optional) Sealcon,14853 E Hinsdale Ave., Suite D, Centennial, CO 80112, (800) 4569012, www.sealconusa.com RS# 466 n via formatio in e e s r f b ite at t Requesder Service We c o u r Re a com/rs achin w w w.m edesig n Thermocouple terminal blocks The DRTB Series of thermocouple terminal blocks come in type K, J, T, E, N, R/S, and U calibrations The blocks are equipped with a built-in miniature female thermocouple connector for auditing and troubleshooting The DIN-rail mountable and audit capable blocks are made with thermocouplegrade alloys for accurate readings Omega Engineering Inc., One Omega Dr., Stamford, CT 06907, (203) 359-1660, www.omega.com RS# 467 struction, agriculture, forestry, mining, and marine industries Detailed specifications, dimension drawings, and photos for clutches and brakes that can be applied to improve safety, efficiency, productivity, speed and reliability Matrix International, an Altra Industrial Motion company, 448 Gardner St., Beloit, IL 61080, (800) 825-9050, www altramobileoffhighway.com RS# 469 Don’t let your packaging Components Without Compromise equipment components compromise your bottom line With our wide range of GERWAH® couplings such as magnetic couplings, Fluid-power products A new 356-page catalog includes features, specifications, technical drawings, color photographs, and application highlights The six main product categories include cylinders, electronic valves, control valves, modular valves, fittings and hose, and air-preparation equipment Clippard Instrument Laboratory Inc., 7390 Colerain Ave., Cincinnati, OH 45239, (513) 521-4261, www clippard.com/catalog-m RS# 468 metal bellows couplings, servo-insert couplings, line shafts, RING-flex® disc couplings and safety couplings as well as our product support and engineering expertise, we’ll make sure we keep you up and running For more information on GERWAH® products, call us today at Partner f or Performance 800-245-2580 www.ringfeder.com Off-highway clutches and brakes New brochure details the latest advancements in clutches and brakes for off-highway applications in the conCircle 143 SEPTEMBER 23, 2010 MACHINE Design.com 65 BUSINESS INDEX AIN Plastics, a div of ThyssenKrupp 22 Advanced Antivibration Components 20 All Motion 72 Altech 72 American Industrial Plastics 22 American Wind Energy Association 42 AutomationDirect BAE Systems .23, 25 BF Goodrich Co 26 Balluff Inc 62 Banner Engineering Corp 63 Beckhoff Automation Bosch Rexroth Corp 48 C&K Components 62 Case Western Reserve University Center for Intelligent Maintenance Systems, University of Cincinnati 42 Comsol 39 Continuum Blue Ltd 38 ContiTech AG 28 ContiTech-Jiebao Power Transmission Systems Ltd 28 Darmstadt University of Technology 58 Dassault Systèmes Simulia 58 Dynaflo 72 Dynamic Development Div of Grumman Aircraft Engineering Corp 26 EAO Switch Corp 28 Eaton Corp., Hydraulics Group 57 Ensinger Inc .22, 72 Evonik RohMax USA 52 Exlar Corp 23 Fabrico 30 Federal Institute of Occupational Health and Safety 58 Festo Corp 34 Fluid Power Institute, Milwaukee School of Engineering 52 Forest City Gear 72 Fraunhofer Institute for Chemical Technology ICT 25 General Dynamics 23 Happiness Tech LLC 36 Haydon Kerk Motion Solutions Hewlett-Packard 72 Instron Job Shop Company 30 KNF Pumps 72 LNP Engineering Plastics 26 Lemo 72 MagneMotion Mercury Marine 24 Metal Powder Industries Federation 30 Microsoft 24 Motion Control 26 National Bureau of Standards 71 National Fluid Power Association National Institute of Standards and Technology 71 NewAge Industries 30 Nippon Pulse 72 Oak Ridge National Laboratory 22 Parker Hannifin 57 Porsche 25 Posital Fraba 72 R+W 72 Robert Bosch GmbH 50 Sauer-Danfoss 56 Sick Inc 62 Siemens PLM Software 24 Sierra Instruments 28 Smalley Steel Ring 72 SolidWorks 36 Strothmann Machines & Handling 18 TÜV Rheinland 30 TÜV Süd 30 Thomson Transducers Direct 56 Turck 63 U S Navy 26 Victrex plc 22 Warner Linear Wilbrecht Ledco Inc 63 Wölfel 58 This index includes all significant references to parent companies mentioned in feature editorial material within this issue of MACHINE DESIGN It doesn’t cite companies listed solely in the Products and Lit Section Page numbers listed refer to the pages where the articles begin Kep-O-seal� Ball Check Valves Leak tight control for hard to maintain systems A unique conical tension spring combined with the Flexible Seal Seat� serves to eliminate sliding parts and closely mated surfaces Allows large unobstructed flow paths Brass construction rated 3,000 PSI Five sizes, 1/8” to 3/4” NPT For details visit: www.kepner.com RS#144 66 MACHINE Design.com CONSIDER US YOUR SOURCE for stock and MTO plastic parts Martin now manufactures stock gears & sprockets in Nylon and UHMW Made-to-orders manufactured in a variety of materials, sizes and shapes Milled plastic quanties to 1000 pieces, injection molding available for larger quantities Send us your drawings, we would love to quote your next project For more information contact: RS#145 SEPTEMBER 23, 2010 DATA FILE LITERATURE ADVERTISING ader Service Access our Re kly find and ic Website to qu ation on the request inform ices found rv se d an products MACHINE DESIGN of s ge pa e th in c design.com/rs w w w.machine To advertise in the DATA FILE sections call 216.696.7000 or e-mail laurel.hirkala@penton.com Tubus Bumpers Ace Controls, Inc offers TUBUS Bumpers that outperform rubber, urethane, and coiled steel shock absorption materials These cost effective bumpers are perfectly suited for harsh environments, with excellent resistance to Oil, Grease, Chemicals, Salt-water, Ultra-violet Light, and Microorganisms Contact ACE Controls for your free catalog: RS# 250 ACE Controls Inc RS# 251 Pressure Sensor Data Book All Sensors Corporation offers a free Pressure Sensor Data book This book includes product specifications for pressure measurement to one-half inch water full scale Sensors are offered with amplified, millivolt and digital outputs Additional information may be found at our website www.allsensors.com All Sensors Corporation RS# 253 Farmington Hills, MI (800) 521-3320 (248) 476-0213 Fax (248) 476-2470 Email: shocks@acecontrols.com www.acecontrols.com Axis Driver + Controller Measures Just 2.25” Square The product is a miniature axis stepper motor controller and driver measuring 2.25” x 2.25” x 0.6” The controller-driver is capable of driving each motor at Amp of current at 1/16th micro-step resolution The controller performs fully profiled moves and accepts high level commands from RS232, RS485 or USB On boards program storage allows stand alone operation Connections for limit / home switches for each channel , and dual encoders for position monitoring and correction are supported Get SmartMotor™ driven Actuators FAST New OEMDynamics Catalog shows Thrust Curves for a vast array of belt and ball-screw driven actuators pre-assembled with Animatics SmartMotors and their built-in control systems Just Apply Power, communicate serially, or download a simple program to complete your Automation task Log onto www.oemdynamics.com for complete information Animatics RS# 254 Industrial Encoders for Dummies 2nd Edition BEI Sensors updated edition features new sections including in-depth explanations of resolution vs accuracy, natural binary vs.gray code, and how to choose an encoder for your specific needs This 44 page book will help you recognize which encoder features really matter, discover the lingo of encoders and understand potential electrical and environmental problems so you can avoid common pitfalls Web: www.beiied.com/dummies Email: contact@beisensors.com RS# 256 Boker’s Free 2010 Washer Catalog Washer Catalog features over 24,000 non-standard flat washer sizes available with no tooling charges ODs of 0.080” to 5.140”, a range of IDs and thicknesses, as well as 2,000 material options provide endless washer possibilities Materials include numerous carbon steels, stainless steels, aluminums, brasses, coppers and non-metallics ISO 9001:2008 Registered Boker’s, Inc (888) 927-4377, FAX: (800) 321-3462 Email: sales@bokers.com URL: www.bokers.com/mdd RS# 259 Free design guide to fluid power motion control deltamotion.com/design Popular, practical 64-page guide with 16 topics by Peter Nachtwey: • Closed-loop Control • Sizing Cylinders and Valves • Selecting Accumulators • Transducers and Resolution • Tuning for Optimal Performance RS# 262 RS# 257 Caplugs Offers Comprehensive Catalog Caplugs offers a 144-page, full-color catalog This comprehensive catalog features a complete line of product protection devices with more than 5,000 caps, plugs, tubes, netting, containers, edge liners and wraps To request a copy of Caplugs new catalog visit www.caplugs.com To speak with a customer service representative, call 1-888-CAPLUGS or e-mail our sales department at sales@caplugs.com Caplugs All Motion RS# 252 www.allmotion.com (408) 460-1345 AutomationDirect’s Volume 13 Free Catalog now available AutomationDirect’s volume 13 catalog offers over 9,500 industrial automation products for a wide range of applications The latest two-volume edition features product descriptions, technical data, and photos for PLCs, touch screen monitors, AC and DC motors, text panels, sensors, encoders, pushbuttons, switches, drives, and more Printed separately from the “Desk Reference” are a complete product price list and a product overview For a free copy, in print or on CD, or more information, visit www automationdirect.com or call 800-633-0405 RS# 255 PDU2M Belt Driven Unit for Higher Moment Loads The HepcoMotion® PDU2M is a high capacity profile belt driven unit that incorporates a carriage containing four extra rollers on each side to withstand increased moment load capacity and stiffness speeds up to 6m/s and high load capacity to 750N PDU2M is ideal for a demanding single-axis system or multi-axis applications Not only a high performance, low maintenance unit, PDU2M is also cost competitive 888.580.8272; www.bwc.com RS# 258 Motion Control with CounterBalance Corporation CounterBalance Corporation has many solutions for heavy lid applications Designed to provide precise balancing of delicate or heavy loads CounterBalances can be designed to integrate hinge and attaching features…a complete system CounterBalance engineers offer design assistance to improve quality and reliability of balancing systems Call or contact us at 215-957-9260 or http://www.cbal.com CounterBalance Corporation RS# 260 RS# 261 Galil’s “Pocket PLC” Has Lots of I/O Gems Fluid Sensors & Controls Master Catalog RIO Pocket PLC is smart, compact, low-cost, and packed with I/O 32 digital and 16 analog I/O in 3.9 x 4.3 x 1.3” package Ethernet/RS232, RISC processor, PID process loops, counters, timers, data logging, email alerts Network multiple RIOs $295 qty 1/$195 qty 100 Call Galil at 800-377-6329 or http://www.galilmc.com/ pocketplc for specs and free tutorials Galil Motion Control RS# 263 SEPTEMBER 23, 2010 This 340-page Master Catalog details the broad portfolio of Gems liquid level, flow, and pressure sensors, miniature solenoid valves, and pre-assembled fluidic systems designed for OEMs across a wide range of industries Provides full specifications, dimensions and part numbers 800-378-1600 www.GemsSensors.com Gems Sensors & Controls RS# 264 MACHINE Design.com 67 NEW REVISED 2010 ELECTRIC HEATER CATALOG New Loctite® Threadlockers Loctite® 243™ Medium Strength Blue Threadlocker and Loctite® 263™ High Strength Red Threadlocker provide: • upgraded temperature resistance – up to 360°F • oil tolerant curing on as-received fasteners without cleaning • primerless performance on both inactive and active metals rS# 265 For a free sample and more info, go to www.useloctite.com/MA23 Hotwatt manufactures electric heaters including cartridge, air process, immersion, strip and finned strip, tubular and finned tubular, band, crankcase, foil, flexible glasrope and ceramic heaters We have been manufacturing resistance heating elements since 1952 and offer a wide variety of heaters for OEM, industrial, medical, commercial and military applications E-mail: sales@hotwatt.com Web Page: www.hotwatt.com rS# 267 HOTWATT, INC rS# 266 EpoxiEs MadE To ordEr For specialized needs, Master Bond can custom formulate an epoxy adhesive, sealant, coating,, potting, and encapsulation compound to meet your specifications We offer unsurpassed technical expertise and have years of experience in solving complex problems Special formulations can be made in small to large quantities These formulations can increase productivity, eliminate waste and improve product reliability Additionally, our products can be supplied in simple, easy to use packaging Master Bond, Inc Phone: (201)343-8983 Fax: (201)343-2132 E-mail: main@masterbond.com www.masterbond.com rS# 269 rS# 268 800.611.9156 rS# 270 Seal Master Corp., Kent, OH rS# 273 Omega Engineering, Inc rS# 272 rS# 271 New OEM Flow Controller for Photovoltaic Industry Stocked Bellows Contact Springs Spiral Retaining Rings & Wave Springs Sierra’s new Smart-Trak 50 Digital OEM Mass Flow Controllers’ economy, simplicity, stability and performance make it the photovoltaic industry’s instrument of choice for the Photovoltaic Vapor Deposition (PVD) sputtering process Maintaining a specified gas mass flow rate to the vacuum chamber is critical during the PVD process Sierra’s 50 Series automatically compensates for changes in system pressure (vacuum pump fluctuations) or loss of pressure from the gas source (cylinder depletion) The 50 Series also delivers precisely-controlled gas mass flow rate to the vacuum chamber to maintain high-quality end product http://www.sierrainstruments.com/products/50series.html Smalley’s complete product line is now available in one easy to navigate catalog The new catalog includes over 7,000 standard wave springs, spiral retaining rings and snap rings Smalley’s new catalog offers simplified part selection, special design and engineering tools and the latest applications of Smalley products (847) 719-5900 E-mail: info@smalley.com, Web: www.smalley.com/getcatalog rS# 275 Smalley Steel Ring Company rS# 276 Cedar Grove, NJ 07009-1291 rS# 274 Sunstone Circuits is a PCB solutions provider, delivering printed circuit board technology and manufacturing services to electronic design engineers working through the design and prototype phases Sunstone’s primary mission is to provide incomparable support and solutions from quote to delivery, 24/7/365 www.EngineeringAdvantage.com Solve difficult closure problems with custom-built, fabric-reinforced, fully molded elastomeric Seal Master® inflatable seals With close tolerance capability and resistance to compression, they’re ideal for imaginative production and processing applications too Engineered specialties include fabricreinforced bags, bladders, plugs and other custom rubber products Design assistance offered Contains over 180 pages of the latest information on top selling products for the sanitary food, beverage, pharmaceutical, bio-medical and related process markets or lab operations, including the Digital RTD Thermometers with NEMA Enclosures for wash down, sanitary, and marine applications The literature is complete with informative sections on Sanitary Temperature Sensors, Sanitary Process Sensors, Control/Displays, Enclosures/Components, Sanitary Laboratory Instruments, and Data Loggers For more information: www.omega.com/literature/sanitary/ Servometer®/PMG, LLC OVER 85 YEARS of Motion & Fluid Control Innovation SEALS, ACTUATORS, GRIPPERS AND BAGS DILBERT™ NEW HORIZONS® in Products for Sanitary Applications Version No 27 Servometer’s lines of miniature, goldplated bellows-type spring contacts and flexible interconnect contacts, range from ODs of 0.037” to 0.125” Servometer® contacts insure electrical continuity where vibration, tolerance build-up and thermal expansion are a problem Lifetime spring repeatability and reliability Design assistance available (973)-785-4630, www.servometer.com NORGREN CUSTOM SOLUTIONS The Strongest, Most Reliable Powder Metal (P/M) Bearings ■ 99% Fill ■ 24-Hour ■ Made in Rate Delivery Capabilities the USA Discover the Symmco Advantage Linear & Angular Displacement Transducers Design and engineering of Linear (LVDT), Angular (ADT) Displacement and Linear Velocity Transducers (LVT) are described in this comprehesive catalog, which provides application examples and product specifications Special section makes custom modifications easy to order Call Toll Free: 800-828-3964, www.transtek-lvdt.com rS# 278 Your Key To Quality & Savings 814-894-2461 rS# 277 ■ Vinyl & Rubber Extrusions Trim-Lok Inc releases a brand new FREE “Catalog 500” featuring “How to Order” steps for the first time customer, along with an expanded line of complete trims and seals FREE samples may be requested Latest additions include our Flap Seal, Fire Retardanct Trim, adn Hatch Seal Contact us toll fee at 1-888-874-6565, e-mail us at info@ trimlok.com or visit us on-line at www.trimlok.com Trim-Lok Inc., Buena Park, CA rS# 280 68 MACHINE Design.com www.symmco.com Incremental Magnetic Encoders Designed for Tight Space Requirements Kübler by TURCK 2430 shaft and 2440 hollow shaft encoders feature a miniature 24 mm diameter for space-restricted installations Designed with non-contact technology and a wide temperature range of -20 to 85ºC, the encoders ensure exceptional ruggedness while delivering a maximum speed rating of 12,000 RPM URL: www.turck.us Phone: 1-800-544-7769 rS# 281 SEptEMbEr 23, 2010 Trans-Tek, Inc rS# 279 New Motion Control Website Experience the new look and feel of Wittenstein Including alpha gearboxes, custom servo solutions and simulation systems - the world of motion is only a mouse click away Put your web in motion with Wittenstein Visit us today at www.wittenstein-us.com Wittenstein rS# 282 ADVERTISER INDEX RS# COMPANY PAGE 141 ACE Controls, Inc .61 114 Allied Electronics, Inc 15 124 Amacoil, Inc .69 139 APM Hexseal Corp 60 103 Automationdirect.com 123 Autonics USA Inc 29 111 Bosch Rexroth 12 107 Clippard Instrument Laboratory, Inc 118 Comsol 21 116 Contitech 17 105 Digi Key 104 EBM Papst 108 Enfield Technologies .10 147 Floyd Bell Incorporated .71 127 Gates .33 126 Gates .32 133 Harting North America 47 129 Helukabel Usa Inc .35 142 Hernon Manufacturing .64 132 Instron Corp 47 131 J.R Merritt Controls, Inc .47 144 Kepner Products Company66 137 Keystone Electronics Corporation .57 135 Lee Company .55 145 Martin Sprocket & Gear .66 140 Master Bond, Inc .61 117 Mico Inc .19 148 MicroStrain 72 112 National Instruments Corporation .13 138 New England Miniature Ball Inc 60 109 Nexen Group Inc .10 121 Norgren Americas 27 101 Omega Engineering Inc IFC 115 Pentair Technical Products 16 146 Pisco USA, Inc .71 149 Proto Labs, Inc IBC 143 Ringfeder Power Transmission USA Corp .65 Rino Mechanical Components Inc .26 Rino Mechanical Components Inc 30 134 RJs Corporation 55 130 Sierra Instruments Inc 37 110 SKF Industries Inc 11 122 Smalley Steel Ring Co 28 102 SolidWorks Corporation 119 Spirol International Corporation 25 106 Symmco Inc 125 TDK Lambda Americas Inc 31 136 Thomas Products Div .56 113 TURCK Incorporated 14 150 Yaskawa .BC While every effort has been made to ensure the accuracy of this index, the publisher cannot be held responsible for any errors or omissions Rolling Ring linear drives Zero backlash Jam-proof design Manually slide drive using release lever For positioning & reciprocating motion applications Smooth movement; ultra-low maintenance Uhing® Rolling Ring linear drives have zero play when the shaft is rotated – even during reversal The threadless shaft won't clog or jam If the system is somehow overloaded, the shaft simply slips instead of churning and grinding • Example applications: material handling machines, winding equipment, test and measurement devices, packaging & converting equipment • Uhing Drives are available separately or on shaft in custom assembly • Wide range of sizes for varying linear speeds & axial thrust requirements Simple set-up & operation Some models feature mechanical control over speed and travel direction – without programming or electronics Request a Brochure or CD-ROM (800) 252-2645 Email: amacoil@amacoil.com www.amacoil.com Distributed by Amacoil, Inc PO Box 2228, Aston PA, 19014 Phone: (610) 485-8300 RS# 124 SEPTEMBER 23, 2010 MACHINE Design.com 69 BUSINESS STAFF BACKTALK Human truths — Part Joseph A Fristik, Vice President/Group Publishing Director: Design Engineering Group, Mechanical Systems/Construction Group Dennis Jensen, Associate Publisher Larry Berardinis, Business Development Director Virginia Goulding, Online Sales & Marketing Manager Julie Ritchie, Research Manager Jane Maloney Cooper, Marketing Manager Debbie Brady, Audience Development Manager Vince Potochar, Director of Production Michelle Modtland, Production Manager, 913-967-7292 Denise Donaldson, Administrative Manager Bob MacArthur, Senior Vice President Advertising Sales Card Pack, Lit Express, and Product Locator Laurel L Hirkala, Special Services Manager, 216-931-9602 CA, OR, WA, ID, AZ, NV, UT, British Columbia: Jim Theriault, jtheriault@penton.com, Ph: 408-857-0322, Fax: 925-736-8705 GA, TX, AR, MO, KS, OK, NM, LA, MS, AL: Franny Singleton, fsingleton@penton com, Ph: 770-205-4289, Fax: 678-455-2741, WI, MN, IA, ND, SD, CO, NE, WY, MT: Dennis Jensen, djensen@penton.com, Ph: 952-368-0018, Fax: 913-514-6627 IL: Melinda Hurley, mhurley@penton.com, Ph: 847-784-9825, Fax: 847-784-9826 OH, MI, IN, KY, TN, WV: Bill Rodman, bill.rodman@penton.com, Ph: 216-931-9636, Fax: 913-514-6841 NC, SC, 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Young Sang Jo, Business Com., Inc., Ph: 011-82-2-739-7840, Fax: 011-82-2-732-3662 Tokyo, Japan: Yoshinori Ikeda, Pacific Business, Inc., Ph: 011-81-03-3661-6138, Fax: 011-81-03-3661-6139 FL: Vince Castell, vcastell@penton.com, Ph: 941-359-0321 1300 E 9th St Cleveland, OH 44114-1503, Ph: 216-696-7000 — Fax: 216-696-0177 Belgium/Holland: Peter Sanders, Ph: 011-31-299-671303, Fax: 011-31-299-671500 70 MACHINE Design.com SEPTEMBER 23, 2010 Part of a best friend’s job should be to immediately clear your computer history if you die Nothing sucks more than the moment during an argument when you realize you’re wrong I totally take back all those times I didn’t want to nap when I was younger There is great need for a sarcasm font How are you supposed to fold a fitted sheet? Was learning cursive really necessary? Map Quest really needs to start their directions on #5 I’m pretty sure people know how to get out of their own neighborhoods I can’t remember the last time I wasn’t at least kind of tired Bad decisions make good stories 10 You never know when it will strike, but there comes a moment at work when you know that you just aren’t going to anything productive for the rest of the day 11 Can we all just agree to ignore whatever comes after Blue Ray? I don’t want to have to restart my collection again 12 I’m always slightly terrified when I exit out of Word and it asks me if I want to save any changes to my 10-page technical report that I swear I did not make any changes to 13 “Do not machine wash or tumble dry” means I will never wash this ever 14 I hate when I just miss a call by the last ring (Hello? Hello? Darn it!), but when I immediately call back, it rings nine times and goes to voice mail What did you after I didn’t answer? Drop the phone and run away? 15 I hate leaving my house confident and looking good and then not seeing anyone of importance the entire day What a waste MD First programmable computer turns 60 [SEAC’s] more than 100,000 connections and components, even for a millionth of a second, would result In 1950, the National Bureau of Stanin a computer malfunction Yet, ofdards, now called the National Institute ten operating nonstop, days a week, of Standards and Technology (NIST), SEAC performed for 4,000 hr in the dedicated the first programmable comfirst months without a malfunction.” puter in U S history, the Standards ElecThe computer was used to tronic Automatic Computer (SEAC) The computations for the military and computer moved information as soundthe Atomic Energy Commission; calwave pulses traveling through 64 mercuryculations on electronic-circuit defilled glass tubes in an early data-storage Edith Marden, National Bureau of sign and for optical lenses; statistisystem known as acoustic delay Each tube Standards computer programmer, cal sorting and tabulating for Social had a quartz crystal at both ends; one was operates the Standards Electronic Security and the Census Bureau; and the transmitter and the other a receiver Automatic Computer (SEAC) during processing of data from studies of Sound pulses were repeatedly sent and the 1950s Photo credit: NIST crystal structure received in a closed loop, recirculating the One memorable application ocdata patterns they carried and, essentially, storing them curred in 1957 when NBS researcher Russell Kirsch and The SEAC had the equivalent of 6,000 bytes of colleagues created a rotating drum scanner and the storage (compared to the approximately 11 billion programming that allowed images to be fed into the bytes on a home computer’s hard drive) In the book, computer The first image scanned was a grainy, blackMeasures for Progress: A History of the National Bureau and-white shot of Kirsch’s three-month-old son, Walden, of Standards, by R.C Cochrane, Cochrane states that a picture honored by Life magazine in 2003 as one of the SEAC “could add or subtract pairs of 11-digit num“the 100 photographs that changed the world.” bers 1,000 times a second, or multiply and divide them The computer was retired in 1964 when it was re330 times a second.” He also wrote, “failure of one of its placed by more-advanced computers MD Air Supply Find all of your pneumatic needs under one roof at Pisco Choose from a complete assortment of fittings, controls, valves, vacuums, tubings, robotic parts and more Competitively priced, immediately available, compact and lightweight components Call for more information RS# 147 (630) 521-9920 www.pisco.com ISO 9001 Certified SEPTEMBER 23, 2010 RS# 146 MACHINE Design.com 71 BACKTALK THANKS TO THE FOLLOWING GAME SPONSORS: For customized article reprints and permissions please contact: Penton Reprints, 1-888-858-8851, e-mail at reprints@ pentonreprints.com or visit pentonreprints com Little Sensors Big Ideas.® 3DM-GX3™-25 Miniature Attitude Heading Reference System With versions weighing only 11.5 grams, 3DM-GX3-25™ enables the next generation of unobtrusive wearable tracking devices and miniature unmanned vehicles and robots Features and Benefits: Lowest p o consump wer • Fully temperature compensated tion in its class from -40ºC to 70ºC • Calibrated for sensor misalignment, gyro g sensitivity and non-linearity • Improved performance under vibration – sensors oversampled at 30 kHz and digitally filtered; coning and sculling integrals computed at kHz • RS232, USB2.0 and TTL serial communication interfaces • Output rates up to 1000 Hz Wireless Sensing Systems High-speed data acquisition for condition based monitoring of machines, health monitoring of structures and industrial test and measurement applications Streamin g rates up to K Hz Features and Benefits: • IEEE 802.15.4 DSSS nodes • License-free worldwide • Streaming rates up to 4KHz • Datalogging rates up to 2048 Hz • Stores 1,000,000 measurements • Excites and conditions differential and single ended inputs • 70m range standard, 300m optional • Internal rechargeable battery GOLD DVRT Microminiature Gauging Sensors Amongst the world’s smallest linear displacement sensors, ideally suited for tightly spaced sensing arrays Features and Benefits: • High resolution and accuracy • Operating temperature to 175°C • Frequency response up to 20 KHz • Robust and waterproof • Suitable for submersion in corrosive media • Suitable for extreme duty-cycle applications GOLD Spherical Sapphire Tip Compression Spring World’s Smallest LVDT Patent Pending Call 800.449.3878 or visit us online at www.microstrain.com RS# 148 MACHINE Design.com Permission to photocopy is granted for users registered with the Copyright Clearance Center (CCC) Inc to photocopy any article, with the exception of those for which separate ownership is indicated on the first page of the article, provided that the base fee of $1.25 per copy of the article, plus $.60 per page is paid to CCC, 222 Rosewood Dr., Danvers, MA 01923 (Code No 0024-9114/09 $1.25 + 60) Subscription Policy: MACHINE DESIGN is circulated to research, development, and design engineers primarily engaged in the design and manufacture of machinery, electrical/electronic equipment, and mechanical equipment To obtain a complimentary subscription see our Web page at submag.com/sub/mn For change of address fill out a new qualification form at submag.com/sub/mn Printed in U.S.A., Copyright © 2009 Penton Media, Inc All rights reserved MACHINE DESIGN (ISSN 0024-9114) is published semimonthly by Penton Media, Inc., 9800 Metcalf Ave., Overland Park, KS 66212 ® 72 Editorial content is indexed in the Applied Science Technology Index, the Engineering Index, SciSearch and Research Alert Microfilm copies available from National Archive Publishing Company (NAPC), 300 N Zeeb Rd., P.O Box 998, Ann Arbor, MI 481060998, Ph: 734-302-6500 or 800-420-NAPC (6272), extension 6578 SEPTEMBER 23, 2010 Paid subscriptions include issues 1-23 Issue no 24 (Product Locator) is available at additional cost Rates: U.S.: one year, $130; 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