AGMA 6115-A13-2013 Power Rating of Single and Double Helical Gearing for Rolling Mill Service (Metric Edition).pdf
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1、ANSI/AGMA 6115-A13 ANSI/AGMA 6115-A13 Metric Edition of ANSI/AGMA 6015-A13 American National Standard Power Rating of Single and Double Helical Gearing for Rolling Mill Service (Metric Edition) AMERICAN NATIONAL STANDARD ANSI/AGMA 6115-A13 AGMA 2013 All rights reserved ii Power Rating of Single and
2、Double Helical Gearing for Rolling Mill Service (Metric Edition) ANSI/AGMA 6115-A13 (Metric Edition of ANSI/AGMA 6015-A13) Approval of an American National Standard requires verification by ANSI that the requirements for due process, consensus and other criteria for approval have been met by the sta
3、ndards developer. Consensus is established when, in the judgment of the ANSI Board of Standards Review, substantial agreement has been reached by directly and materially affected interests. Substantial agreement means much more than a simple majority, but not necessarily unanimity. Consensus require
4、s that all views and objections be considered, and that a concerted effort be made toward their resolution. The use of American National Standards is completely voluntary; their existence does not in any respect preclude anyone, whether he has approved the standards or not, from manufacturing, marke
5、ting, purchasing or using products, processes or procedures not conforming to the standards. The American National Standards Institute does not develop standards and will in no circumstances give an interpretation of any American National Standard. Moreover, no person shall have the right or authori
6、ty to issue an interpretation of an American National Standard in the name of the American National Standards Institute. Requests for interpretation of this standard should be addressed to the American Gear Manufacturers Association. CAUTION NOTICE: AGMA technical publications are subject to constan
7、t improvement, revision or withdrawal as dictated by experience. Any person who refers to any AGMA Technical Publication should be sure that the publication is the latest available from the Association on the subject matter. Tables or other self-supporting sections may be referenced. Citations shoul
8、d read: See ANSI/AGMA 6115-A13, Power Rating of Single and Double Helical Gearing for Rolling Mill Service (Metric Edition), published by the American Gear Manufacturers Association, 1001 N. Fairfax Street, Suite 500, Alexandria, Virginia 22314, http:/www.agma.org. Approved September 23, 2013 ABSTRA
9、CT This standard specifies a method for rating the pitting resistance and bending strength of herringbone, double helical, and helical involute gear pairs as applied to metal rolling mills. Published by American Gear Manufacturers Association 1001 N. Fairfax Street, Suite 500, Alexandria, Virginia 2
10、2314 Copyright 2013 by American Gear Manufacturers Association All rights reserved. No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without prior written permission of the publisher. Printed in the United States of America ISBN: 978-1-61481-
11、057-5 American National Standard AMERICAN NATIONAL STANDARD ANSI/AGMA 6115-A13 AGMA 2013 All rights reserved iii Contents Foreword . v 1 Scope . 1 1.1 Applicability . 1 1.2 Rating formulae . 1 1.3 Limitations . 2 2 Normative references . 2 3 Definitions and symbols . 4 3.1 Definitions 4 3.2 Symbols
12、. 4 4 Design considerations 5 4.1 Momentary overloads 6 4.2 Loading 6 4.3 Pinion stands . 6 4.4 Relative hardness of gearing 7 5 Rating criteria . 7 5.1 Pitting resistance power rating 7 5.2 Pitting resistance of helical gears, PazR. 7 5.3 Bending strength power rating 7 5.4 Bending strength of heli
13、cal gears, PayR. 8 5.5 Service factor 8 6 Dynamic factor, Kv. 8 7 Load distribution factor, KHR. 8 7.1 Values for load distribution factor, KHR9 7.2 Face load distribution factor, KHR. 9 7.2.1 Lead correction factor, KHmcR10 7.2.2 Pinion proportion factor, KHpfR. 10 7.2.3 Pinion proportion modifier,
14、 KHpmR11 7.2.4 Mesh alignment factor, KHmaR11 7.2.5 Mesh alignment correction factor, KHe12 8 Allowable stress numbers, HPand FP12 8.1 Guide for case depth of surface hardened teeth . 22 8.1.1 Carburized and hardened teeth 23 8.1.2 Induction hardened teeth 23 8.1.3 Additional considerations 24 9 Str
15、ess cycle factors, ZNRand YNR. 24 9.1 Load cycles . 25 9.2 Stress cycle factors for pitting resistance, ZNR25 9.3 Stress cycle factor for bending strength, YNR26 10 Hardness ratio factor, ZW. 26 10.1 Through hardened pinions mating with through hardened gears . 27 10.2 Surface hardened pinions and t
16、hrough hardened gears 28 10.3 Surface hardened pinions and surface hardened gears . 28 11 Momentary overloads 28 11.1 Infrequent momentary overloads 28 11.2 Cyclical overloads . 29 12 Rim thickness factor, KBR. 29 13 Surface condition factor, pitting resistance, ZR30 14 Surface condition factor, too
17、th root bending, KTRF. 31 Annexes Annex A Typical rolling mill loading 32 Annex B Pinion and gear blank considerations 34 AMERICAN NATIONAL STANDARD ANSI/AGMA 6115-A13 AGMA 2013 All rights reserved iv Annex C Service factors 38 Annex D Initial shaft sizing 40 Annex E Housing bore alignment considera
18、tions . 42 Annex F Sample problems 43 Annex G Lead modification design and contact pattern verification . 46 Annex H Typical rolling mill drive arrangements . 50 Annex I Bearings . 54 Annex J Lubrication . 56 Annex K Condition monitoring and preventive maintenance 59 Annex L Bibliography 61 Tables T
19、able 1 - Symbols . 4 Table 2 - Empirical coefficients A, B, and C 11 Table 3 - Allowable contact stress number, HP, for steel gears . 13 Table 4 - Allowable bending stress number, FP, for steel gears 13 Table 5 - Metallurgical characteristics affecting the allowable contact stress number, HP, and al
20、lowable bending stress number, FPfor through hardened steel gears 14 Table 6 - Metallurgical characteristics affecting the allowable contact stress number, HP, and allowable bending stress number, FP, for carburized and hardened steel gears . 17 Table 7 - Metallurgical characteristics affecting the
21、allowable contact stress number, HP, and allowable bending stress number, FP, for induction hardened steel gears . 20 Table 8 - Surface condition factor, pitting resistance, ZR31 Table 9 - Surface condition factor, tooth root bending, KTRF. 31 Figures Figure 1 - Pinion proportion factor, KHpfR. 10 F
22、igure 2 - Evaluation of S and S1. 11 Figure 3 - Mesh alignment factor, KHmaR. 12 Figure 4 - Required hardening pattern for induction hardened teeth 14 Figure 5 - Minimum effective case depth, carburized and hardened teeth . 23 Figure 6 - Minimum effective case depth, induction hardened teeth 24 Figu
23、re 7 - Stress cycle factor, pitting resistance, ZNR25 Figure 8 - Stress cycle factor, bending strength, YNR26 Figure 9 - Hardness ratio factor, ZW27 Figure 10 - Rim thickness factor, KBR30 AMERICAN NATIONAL STANDARD ANSI/AGMA 6115-A13 AGMA 2013 All rights reserved v Foreword The foreword, footnotes
24、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 6115-A13, Power Rating of Single and Double Helical Gearing for Rolling Mill Service (Metric Edition). The first AGMA standard for rolling mill gearing was A
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