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Root Fillet Optimization of Gears with Asymmetric Teeth

By Dr. A.L. Kapelevich and Dr. Y.V. Shekhtman The Direct Gear Design method optimizes various parameters and elements of gear tooth geometry to achieve the...

Improving the Friction Power of Gears and Bearings

A machine that runs endlessly without any wear and frictional losses — who wouldn’t dream of that? Unfortunately, such a machine does not exist...

CFD Simulation of Power Losses and Lubricant Flows in Gearboxes

Printed with permission of the copyright holder, the American Gear Manufacturers Association, 1001 N. Fairfax Street, Suite 500, Alexandria, Virginia 22314. Statements presented in...

Induction Gear Hardening

Over the years, gear manufacturers have increased their knowledge of the production of quality gears and gear-like components. This knowledge has led to many...

Choosing a Planetary Gearhead

From CGI Inc. staff When a motor is being designed into a motion control system, all too often the benefits of a gearhead are realized...

Measuring Root/Flank Stress in Plastic Gears

The number of plastic gears used in different applications is increasing every year, mostly due to their cost effectiveness for large series production and...

Closed Loop Machining of Cylindrical Gears

Leonhard Euler’s 1760 invention of making cylindrical gears with an involute profile was the beginning of a success story. As a tooth profile, the...

Fatigue Performance and Cleanliness of Carburizing Steels for Gears

The cleanliness of steels used for gears is of great importance when looking to improve their life or increase loads. In this paper, carburizing...

Extending gear life in demanding applications

Although gears and other precision components are generally made of hardened steel or metal alloys, those used in high load applications still can fail...

Advanced Thermal Processing for Enhanced Gear Tribology

Abstract Vast empirical knowledge accumulated over centuries, in conjunction with recent advances in the areas of material science, tribology, and big data analysis, have allowed...

Fast, Flexible Bevel Gear Cutting

Well over 100 bevel gear cutting machines crowded this Chicago factory floor just a few years ago, all busy producing spiral bevel gear sets...

Numerical Thermal 3D Modeling of Plastic Gearing

This paper will primarily focus on the prediction of gear temperature of plastic gears using a numerical heat transfer model based on 3D Finite...

An Experimental and Analytical Comparison of the Noise Generated by Gears of Austempered Ductile...

Over the years, there have been many claims made concerning the relative noise performance of austempered ductile iron (ADI) versus steel as a gearing...

A Laser Focus on Leading-Edge Metrology

In the world of gear inspection, there are many factors to consider in understanding the needs of designers, manufacturers, and quality professionals. These include...

Can Shop Floor Measurement Actually Replace Gauges?

Quality assurance on the shop floor is an integral part of the production chain today. It involves comparing production results against the target results...

A New Wave in Virtual Machining

The custom nature of gears and the high cost of cutting tools have continued to put pressure on manufacturers to reduce the cost of...

Harnessing Drive Data for Smart Process Design

Optimal interplay between innovative gear cutting tools and powerful bevel gear cutting machines results in highly productive cutting processes with extremely high, reproducible gear...

AGMA/ANSI/ISO Standards on Bevel and Hypoid Gears

This paper deals with gearings that operate (a) on intersected shafts and (b) on crossed shafts. The gearings that operate on intersected shafts are...

Contact Ratio Optimization of Powder-Metal Gears

Powder metal (PM) alloys are becoming more of a solution for high-performance gears, not only because of part price but also because the technology...

The Bold New World of Chamfering and Deburring

If there’s a “red-headed step child” among the cylindrical gear manufacturing processes today, it’s chamfering and deburring. Since these operations historically add cost and...
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