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The roughness profile of metal-to-metal contacting parts is one of the most important characteristics in mak- ing mechanical systems more durable and energy efficient. Unquestionably, it is the interaction of the peak asperities from ground or honed...

This paper describes the work performed to reduce 1st order gear mesh vibration which was the root cause of an excessive gear“whine”. |t includes a discussion for introduction of an unmodified involute profile (except for a short...

A low noise level is an important quality feature in modern gearboxes for passenger cars. But a troublesome noise can have many causes. The noise origination and transmission is amongst others affected by the design layout, by...

Speed reducers incorporating cycloidal technology as their primary reduction mechanism have always been active topics of research given their unique trochoidal tooth profile. A cycloidal reducer is recognized for its strength and mainly studied for rotational performance...

This paper presents a gear design optimization approach that was applied to reduce both tooth contact temperature and noise excitation of a high-speed spur gear pair running without lubricant. The optimum gear design search was done using...

A failure mode called“flank breakage" is increasingly observed in different applications of cylindrical and bevel gears. These breakages typically start from the active flank approximately in the middle of the active tooth height and propagate to the...

Most of the large open gear sets for mining industry are designed according to ANSI/AGMA 6014-A06 and ANSI/AGMA 2001-D04. Basically, customer specifications and AGMA service factor ratings both depend on design of the pinion (including material selection...

For gears larger than 3 m (10 feet) in diameter, construction of gear blanks tend to be divided into cast steel, ductile iron, and forged rim welded web structures for use in cylindrical grinding mills and kilns....

In this paper, a manufacturing method of the pinion member of large-sized skew bevel gears using a multi-axis control and multi-tasking machine tool respecting an existing gear member is proposed. First, the tooth surface forms of skew...

Depending on annual production volumes, batch sizes and workpiece geometry several gear manufacturing technologies are used for industrial gear production. Most applicated is the hobbing process, followed by broaching, shaping, sintering and rolling processes. Upcoming gear manufacturing...