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Aerospace Gears

Root cause for noise excitation in geometrically-accurate (perfect) parallel-axes gearing

Gears are extensively used to transmit a rotation from a driving shaft to a driven shaft. Depending on the gear […]

Application of Finite Element Analysis for the Strain Wave Gear Tooth Surfaces Design and Modification

This paper represents the application of finite element analysis for the strain wave gear with modified conjugate tooth surfaces. The […]

Methods to Determine Form Diameter on Hobbed External Involute Gears

In custom designs of external spur or helical gears, designers generally prefer a lower form diameter for greater transverse contact […]

Lean Heat Treatment for Distortion Control

Controlling distortion is of key importance during the case hardening process for the production of gear components. By effective control […]

Tooling Workholding: A new solution for bevel gears

The creativity of the designers knows no bounds with new drive element and gear geometries. Faced with constantly increasing demands […]

Southern Gear & Machine, Inc.

THE FINEST AEROSPACE, DEFENSE, INSTRUMENT, PRECISION AND COMMERCIAL GEARING SOUTHERN GEAR AND MACHINE, INC. began operations in 1957. It grew […]

An Animated Approach to Plotting Profiles

Trochoid Spiral (TS) and Epitrochoidal Spiral (ETS) curves and special flash animations were developed by the author in 2004 and […]

New Powder Applications

Powder Metallurgy is a proven technology to produce high strength gears and tailored gear shapes for both automotive and industrial […]

The Attributes of Loaded Gear Tooth Modeling: Part One

Figures 1-14 courtesy of The Gleason Works On numerous occasions during a career with gears, I’ve had the opportunity to […]

Profile Relief and Noise Excitation in Helical Gears

Gear noise results from the gear mesh dynamic forces that are transmitted through the support shafts and bearings to the […]

Designing Gears Through the Years

In the past 50 years, we’ve certainly come a long way in terms of our gear design and problem-solving capabilities. […]

The New Face of a Fine Fellows

Bourn & Koch, Inc., has been on a growth path for the past number of years. The growth has been […]

An Optimized Approach to Straight Bevel Gear Design

The optimal–or “rational”–design of gears can be a challenge due to the high number of variables, limitations, and interrelationships involved. […]

Arrow Offers a Stock Solution

A sagging economy and the fierce demands of global competition are unfortunate realities that all manufacturers have been faced with […]

Direct Digital Simulation Modeling

Direct Digital Simulation (DDS) is a universal method for computer modeling of gear design manufacturing and analyses. Unlike the commonly […]

The Advent of OptiGearing

Introduction A 25 to 35 percent increase in power density and a markedly lower operating noise are two major performance […]

Bladerunner 3F

In the past five years, dry-cutting technology has steadily moved to dominate production of automotive hypoid gearsets in the United […]

Determining the Source of Gear Whine Noise

Gear whine noise, particularly in consumer products such as motor vehicles and appliances, is an important and annoying problem. This […]

Staying Aloft as an Aerospace Supplier

It’s no secret that the pressure to reduce input costs has led prime aerospace manufacturers to reexamine each element in […]

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