The connection between transmission error, noise and vibration during operation has long been established.
Calculation methods have been developed to describe the influence so that it is possible to evaluate the relative effect
of applying a specific modification at the design stage. These calculations enable the designer to minimize the excitation from the gear pair engagement at a specific load. This paper explains the theory behind transmission error and the reasoning behind the method of applying the modifications through mapping surface profiles and determining load sharing.
Bringing new or improved products to
market sooner has long been proven profitable for companies. One way to help shorten the time-to-market is to accelerate validation testing. That is, shorten the test time required to validate a new or improved product.
India is rapidly turning into a global manufacturing hub, thanks to the country’s manufacturing and engineering
capabilities, vast pool of skilled expertise and its size. These qualities offer it a strategic advantage for the manufacturing segment. A large number of international companies in varied
segments have already set up a manufacturing base in India and others are following suit. It only makes sense to bring this industry segment together under one roof to discuss the current
trends and technology prevalent to the marketplace. IPTEX 2012 is scheduled from February 9–11, 2012 at the Bombay Exhibition Center in Mumbai, India.
In November, Gear Technology conducted
an anonymous survey of gear manufacturers. Invitations were sent by e-mail to thousands of individuals around the world. More than 300
individuals responded to the online survey, answering questions about their manufacturing operations and current challenges facing their businesses.
This paper presents an approach that provides optimization of both gearbox kinematic arrangement and gear tooth geometry to achieve a high-density gear transmission. It introduces dimensionless gearbox volume functions that can be minimized by the internal gear ratio optimization. Different gearbox arrangements are analyzed to define a minimum of the volume functions. Application of asymmetric gear tooth profiles for power density
maximization is also considered.
This paper presents an original method to compute the loaded mechanical behavior of polymer gears. Polymer
gears can be used without lubricant, have quieter mesh, are more resistant to corrosion, and are lighter in weight.
Therefore their application fields are continually increasing. Nevertheless, the mechanical behavior of polymer materials is very complex because it depends on time, history of displacement and temperature. In addition, for several polymers, humidity is another factor to be taken into account. The particular case of polyamide 6.6 is studied in this paper.