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January/February 2003

Archive > 2003 > January/February 2003

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Feature Articles

Technical Articles

Experimental Characterization of Bending Fatigue Strength in Gear Teeth
The effort described in this paper addresses a desire in the gear industry to increase power densities and reduce costs of geared transmissions. To achieve these objectives, new materials and manufacturing processes, utilized in the fabrication of gears, and being evaluated. In this effort, the first priority is to compare the performance of gears fabricated using current materials and processes. However, once that priority is satisfied, it rapidly transforms to requiring accurate design data to utilize these novel materials and processes. This paper describes the effort to address one aspect of this design data requirement.

The Alignment of High Speed Gears
This paper reviews the necessity for detailed specification, design and manufacture to achieve required performance in service. The precise definition of duty rating and a thorough understanding of the environmental conditions, whether it is in a marine or industrial application, is required to predict reliable performance of a gearbox through its service life. A case study relating to complex marine gears and other general practice is presented to review the techniques used by Allen Gears to design and develop a gearbox that integrates with the requirements of the whole machinery installation. Allen Gears has considerable experience in the design of a variety of industrial and marine gears(Ref. 1,2).

Spiral Bevel Gear Development: Elminiating Trial and Erroe with Computer Technology
Computer technology has touched all areas of our lives, impacting how we obtain airline tickets, purchase merchandise and receive medical advice. This transformation has had a vast influence on manufacturing as well, providing process improvements that lead to higher quality and lower costs. However, in the case of the gear industry, the critical process of tooth contact pattern development for spiral bevel gears remains relatively unchanged.

Gear Damage Detection Using Oil Debris Analysis
The purpose of this paper was to verify, when using an oil debris sensor, that accumulated mass predicts gear pitting damage and to identify a method to set threshold limits for damaged gears.

Departments

A Packed House (Publishers Page)
"Ahem. Could everybody please scootch over? We need to make as much room as possible, because we're expecting a full house."

Product News (Product News)
Complete Product News for January/February 2003.

Revolutions (Revolutions)
Welcome to Revolutions, the column that brings you the latest, most up-to-date and easy-to-read information about the people and technology of the gear industry.

Technical Calendar (Events)
Complete Technical Calendar for January/February 2003.

Industry News (Industry News)
Complete Industry News for January/February 2003.

A Man and His Mania for Antique Machines (Addendum)
Richard Spens has a hobby that leads him onto the Internet, through magazines, to auctions and into farmers' back yards.