Improved materials and design practices are putting plastic gears into increasingly demanding applications. One example is increasing use in Europe of plastic actuators at rear wheels that transfer power to parking brake systems. Other automotive uses include gear in doors, where new low-emission grades of polyacetal have been developed.
Any precision gears probably will be custom gears. Design rules for plastic are entirely different than they are for metal. One old problem in plastic gear design is misaligned mating spur and helical gear surfaces. A newly adapted gear design handbook from ABA/PGT of Manchester, CT, describes how to crown gear teeth to avoid the problem. Another good design reference is a downloadable brochure from UFE of Stillwater, MN, that covers "must-ask questions" about plastic gear design.
Click below to read about the latest Plastic Gear product trends:
A middle school team from Rochester, Mich., has again nabbed the grand prize in the annual international Future City Competition, which drew students from 37 regions of the United States, as well as from England and China.
The word “smart” is becoming the dumbest word around. It has been applied to almost every device and system in our homes. In addition to smartphones and smart meters, we now hear about smart clothing and smart shoes, smart lights, smart homes, smart buildings, and every trendy city today has its smart city project. Just because it has a computer inside and is connected to the Web, does not mean it is smart.
Are you being paid enough? Do you want a better job? According to a recent survey Manpower released just before Engineers Week, employers and engineers don't see eye-to-eye about the state of US engineers' skills and experience.
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