For a gear to perform properly, the contact pattern is critical. Typically, the ideal tooth contact pattern under load should encompass the bulk of the tooth surface, but not touch the edge. It isn't easy. The design usually begins with guesswork, and errors are ironed out after physical testing. Arrow Gear Company (www.arrowgear.com) says it has a better idea. Using software and hardware from Gleason Corp. (www.gleason.com), the company now builds virtual models to predict how the gear will perform in actual operation. Computer analysis generates settings for machine tools, saving setup time. Arrow engineers say that the computer modeling yields the ideal tooth pattern on the first or second attempt on the manufacturer's floor.
The rear window on Ford's Lightweight Concept vehicle, based on the Fusion model, is made with a material combination devised by SABIC that saves 35% of the weight. The car's overall weight is 25% lighter than a standard production 2013 Fusion.
Major global metropolitan areas are implementing a vast number of technology, energy, transportation, and Internet projects to make the metropolis a friendlier, greener, safer, and more sustainable place to be.
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