This standard provides information on the design of spur and helical vehicle power transmission gears. Included are considerations for design, material and heat treatment, determination of load capacity, mounting features, and typical design problems.
In determining load capacity, the knowledge and judgment required to evaluate the various rating factors come from years of accumulated experience in designing, manufacturing, and operating gear units. This standard is intended for use by the experienced gear designer, capable of selecting reasonable values for the rating factors. It is not intended for use by the engineering public at large.
Vehicle gearing is defined as: “Steel drive line components of self-propelled, wheeled or non-wheeled vehicles; for transportation, recreational or industrial use. Propulsion of these vehicles should be a primary function of its power source, and its mobility not confined to the constraints of a closely defined area.”
[The foreword, footnotes and annexes, if any, in this document are provided for informational purposes only and are not to be construed as a part of ANSI/AGMA Standard 6002-C15, Design Guide for Vehicle Spur and Helical Gears.]
This standard was created to serve as a guide to provide sound approaches for designing gears used in vehicle drive lines. This standard is intended for use by design engineers capable of selecting reasonable values for rating factors, material grades, heat treatment, and gear manufacturing capabilities. It updates, expands, and replaces ANSI/AGMA 6002-B93, Design Guide for Vehicle Spur and Helical Gears. The committee intends to continue updating this standard to incorporate the latest data and technologies as they are developed.
This guide establishes a gear set design by following a sequential approach using: design considerations; lubrication and cooling; surface treatments; material and heat treatment; load capacity determination; and variable duty cycle loading.
The decision to produce a vehicle gearing design guide was made by the Vehicle Gearing Committee on May 4, 1971. The first draft of AGMA 170.01 and was dated May 1972. AGMA 170.01 was approved by the AGMA membership in February, 1976. The Vehicle Gearing Committee was reactivated in October 1987 to develop an updated vehicle gearing design guide. ANSI/AGMA 6002-B93 was published in 1993.
Over the last 21, years the committee has worked on refining ANSI/AGMA 6002-B93. The standard has been completely rewritten with updated material throughout. A sample of the changes to the standard include:
New sections on macro gear tolerances and high contact ratio gears;
A new chapter on surface finish;
An expansion of lubrication considerations from one section to an entire chapter;
A complete rewrite of the load capacity section so that the material is more in line with the ANSI/AGMA 2001-D04;
Four new annexes were created that include: a design example; vehicle gearing equations; a discussion of splines; and an annex on lubrication considerations for planetary carriers.
For full effectiveness, this guide should be used in conjunction with other applicable AGMA Standards.
The first draft of ANSI/AGMA 6002-C15 was made in April 2012. It was approved by the AGMA membership in March 2015. It was approved as an American National Standard on July 6, 2015.
Suggestions for improvement of this standard will be welcome. They may be submitted to firstname.lastname@example.org.
The following standards (documents) contain provisions which, through reference in this text, constitute provisions of this standard (document). At the time of publication, the editions were valid. All standards (documents) are subject to revision and parties to agreements based on this standard (document) are encouraged to investigate the possibility of applying the most recent editions of the standards (documents) indicated below.
ISBN: 978-1-55589-001-8 Pages: 69
AGMA 912-A04, Mechanisms of Gear Tooth Failures
AGMA 923-B05, Metallurgical Specifications for Steel Gearing
AGMA 925-A03, Effect of Lubrication on Gear Surface Distress
AGMA 938-A05, Shot Peening of Gears
ANSI/AGMA 1012-G05, Gear Nomenclature, Definitions of Terms with Symbols
ANSI/AGMA 2001-D04, Fundamental Rating Factors and Calculation Methods for Involute Spur and Helical Gear Teeth
ASTM A534-09, Standard Specification for Carburizing Steels for Anti-Friction Bearings
ASTM A866-09, Standard Specification for Medium Carbon Anti-Friction Bearing Steel
ANSI/AGMA ISO 1328-1-B14, Cylindrical gears - ISO system of flank tolerance classification - Part 1: Definitions and allowable values of deviations relevant to flanks of gear teeth
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