Direct Gear Design

by Alexander L. Kapelevich

Overview

The updated and improved second edition of Direct Gear Design details a nonstandard gear design approach that makes it possible to significantly improve gear drive performance. Providing engineers with gear design solutions beyond standard limits, this book delivers engineers with practical and innovative solutions to optimize gearing technologies.

The majority of modern gears are over-standardized, not allowing gear design engineers to see possible gear design solutions outside of standard limits. The book explores opportunities to improve and optimize gears beyond these limitations. The method of Direct Gear Design has been proven to maximise gear drive performance, increase transmission load capacity and efficiency, and reduce size and weight. Discussing the use of gears made from powder metal and plastic, the book surveys gear manufacture and makes use of extensive references to encourage further exploration of gear design innovation. Additionally, the book provides an overview of manufacturing technologies and traditional gear design, as well as covering topics such as asymmetric gears, tolerance selection and measurement methods of custom gears.

Written accessibly, with a focus on practical examples, this fully updated edition will serve as a guidebook for all professionals exploring high-performance gearing system technologies.

Product Details

ISBN-13:	9781000388992
Publisher:	CRC Press
Publication date:	05/31/2021
Sold by:	Barnes & Noble
Format:	eBook
Pages:	364
File size:	20 MB
Note:	This product may take a few minutes to download.

About the Author

Alexander L. Kapelevich is a noted expert in the design and manufacture of gears and gearing systems, with over forty years' experince in the field. He received his M.S. degree from the Moscow Aviation Insitute, and his Ph.D. from the Moscow State Technical University. Dr. Kapelevich worked in the Russian aviation industry following his graduation, working in research and development, software development, testing, and failure investigation. He relocated to the United States in 1994, and developed Direct Gear Design@, a well-known design approach, and the subject of his book, Direct Gear Design, first published in 2012 by CRC Press. Currently Dr. Kapelevich works as a gear design consultant for AKGears, LLC. He is a member of AGMA (the American Gear Manufacturers Association).

Table of Contents

1 Historical Overview

2 Macrogeometry of Involute Gears

3 Area of Existence of Involute Gears

4 Involute Gearing Limits

5 Gear Geometry Optimization

6 Stress Analysis and Rating

7 Plastic and Powder Metal Gear Design Specifics

8 Tolerancing and Tolerance Analysis

9 Gear Manufacturing Essentials

10 Traditional vs Direct Gear Design®

11 Direct Gear Design® Applications

Epilogue

References

Index

What People are Saying About This

From the Publisher

"Direct Gear Design is a must-have book for the modern gear specialist. In order to be competitive the world is looking for alternative methods to make new products. The gear production industry is not an exception. The Finite Element Analysis, digital simulation tools, computer-controlled machining, [and] new materials demand the development of new approaches to design gears. Direct Gear Design by Alexander L. Kapelevich is exactly the book that established or new generation engineers should look for. The book is practical, informative, includes recommendations, useful charts, diagrams, and tables, provides valuable information on gear geometry limitations, and brings implementation examples of different gearbox applications. The book introduces a new vision of gear design while addressing the old gear design challenges of reducing the stress level and increasing reliability of the gear trains."
—Mr. Yuriy Gmirya, Sikorsky Aircraft Corporation, USA

"… a useful tool for gear and transmission designers to come up with optimum gear design. Today we are forced to increase load carrying capacity, reduce transmission weight and fulfill noise requirements without increasing manufacturing costs. The described new method DGD and asymmetric gear design is helpful to reach this target."
—Dr. Franz J. Joachim, ZF Friedrichshafen AG, Germany

"A modern description of how gears should be designed today when we have computer tools that allow us to optimize our gear designs far beyond what the standards allow us."
—Dr. Anders Flodin, Höganäs AB, Sweden

"Finally, a new book that deals with gear macrogeometry! While many papers are being published on microgeometry/gear corrections, only little work is published on the more important issue of gear macrogeometry optimization. This book opens up a new window of opportunity for the gear designer, and it deals with one of the few gear geometry types not yet fully utilized, asymmetric gears. This is also most welcome as it will encourage designers to think ‘out of the box’. And with today’s gear-cutting technologies, e.g. direct machining, the manufacturing of non-standard gears displaying superior performance is feasible at little cost increase. Furthermore, the book covers a wide area of gear types and gives practical hints on how to balance gear strength, how to design high addendum gears or how to achieve unusually high ratios."
—Mr. Hanspeter Dinner, EES Gear GmbH, Switzerland

Editorial Reviews

"This book was written by [an] engineer for engineers, to show an alternative to the traditional way of gear design."
—Wonderpedia, Today's Featured Article 03.10.2014

"Direct Gear Design is a must-have book for the modern gear specialist. To be competitive, the world is looking for alternative methods to make new products. The gear production industry is not an exception. Finite element analysis, digital simulation tools, computer-controlled machining, [and] new materials demand the development of new approaches to design gears. Direct Gear Design by Alexander L. Kapelevich is exactly the book that established or new generation engineers should look for. It is practical; informative; includes recommendations, useful charts, diagrams, and tables; provides valuable information on gear geometry limitations; and brings implementation examples of different gearbox applications. The book introduces a new vision of gear design while addressing the old gear design challenges of reducing the stress level and increasing reliability of the gear trains."
—Mr. Yuriy Gmirya, Sikorsky Aircraft Corporation, USA

"… a useful tool for gear and transmission designers to come up with optimum gear design. Today we are forced to increase load carrying capacity, reduce transmission weight, and fulfill noise requirements without increasing manufacturing costs. The described new method, Direct Gear Design, and asymmetric gear design are helpful to reach this target."
—Dr. Franz J. Joachim, ZF Friedrichshafen AG, Germany

"A modern description of how gears should be designed today when we have computer tools that allow us to optimize our gear designs far beyond what the standards allow us."
—Dr. Anders Flodin, Höganäs AB, Sweden

"Finally, a new book that deals with gear macrogeometry! While many papers are being published on microgeometry/gear corrections, only little work is published on the more important issue of gear macrogeometry optimization. This book opens up a new window of opportunity for the gear designer, and it deals with one of the few gear geometry types not yet fully utilized, asymmetric gears. This is most welcome, as it will encourage designers to think ‘outside the box’. And with today’s gear-cutting technologies (e.g., direct machining), the manufacturing of non-standard gears displaying superior performance is feasible at little cost increase. Furthermore, the book covers a wide area of gear types and gives practical hints on how to balance gear strength, how to design high addendum gears, and how to achieve unusually high ratios."
—Mr. Hanspeter Dinner, EES Gear GmbH, Switzerland

From the Publisher