AGMA 2005-D03-2003(R2008) Design manual for bevel gears

[第1頁(yè)] --`,,```,,,,````-`-`,,`,,`,`,,`--- ANSI/AGMA 6011--I03 Revision of ANSI/AGMA 6011--H98 Reaffirmed December 2008 American National Standard Specifications for High Speed Helical Gear Units Copyright American Gear Manufacturers Association Provided by IHS under license with AGMA No reproduction or networking permitted without license from IHS Not for Resale ANSI/AGMA 6011--I03 [第2頁(yè)] --`,,```,,,,````-`-`,,`,,`,`,,`--- Specification for High Speed Helical Gear Units American ANSI/AGMA 6011--I03 National [Revision of ANSI/AGMA 6011--H98] Standard ApprovalofanAmericanNationalStandardrequiresverificationbyANSIthattherequire- mentsfordueprocess,consensus,andothercriteriaforapprovalhavebeenmetbythe standards developer. Consensusisestablishedwhen,inthejudgmentoftheANSIBoardofStandardsReview, substantial agreement has been reached by directly and materially affected interests. Substantialagreementmeansmuchmorethanasimplemajority,butnotnecessarilyuna- nimity. Consensus requires that all views and objections be considered, and that a concerted effort be made toward their resolution. TheuseofAmericanNationalStandardsiscompletelyvoluntary;theirexistencedoesnot in any respect preclude anyone, whether he has approved the standards or not, from manufacturing,marketing,purchasing,or usingproducts,processes,or proceduresnot conforming to the standards. The American National Standards Institute does not develop standards and will in no circumstances give an interpretation ofany American NationalStandard. Moreover,no personshallhavetherightorauthoritytoissueaninterpretationofanAmericanNational StandardinthenameoftheAmericanNationalStandardsInstitute. Requestsforinterpre- tation of this standard should be addressed to the American Gear Manufacturers Association. CAUTIONNOTICE: AGMAtechnicalpublicationsaresubjecttoconstantimprovement, revision,orwithdrawalasdictatedbyexperience. AnypersonwhoreferstoanyAGMA technicalpublicationshouldbesurethatthepublicationisthelatestavailablefromtheAs- sociation on the subject matter. [Tablesorotherself--supportingsectionsmaybereferenced. Citationsshouldread: See AGMAAGMA6011--I03,SpecificationforHighSpeedHelicalGearUnits,publishedbythe American Gear Manufacturers Association, 500 Montgomery Street, Suite 350, Alexandria, Virginia 22314, http://www.agma.org.] Approved February 12, 2004 ABSTRACT Thisstandardincludes design,lubrication,bearings,testing andrating forsingle anddouble helicalexternal tooth,parallelshaftspeedreducersorincreasers. Unitscoveredincludethoseoperatingwithatleastonestage havingapitchlinevelocityequaltoorgreaterthan35meterspersecondorrotationalspeedsgreaterthan4500 rpm and other stages having pitch line velocities equal to or greater than 8 meters per second. Published by AmericanGearManufacturersAssociation 500MontgomeryStreet,Suite350,Alexandria,Virginia 22314 Copyright？ 2003 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: 1--55589--819--X ii Copyright American Gear Manufacturers Association Provided by IHS under license with AGMA No reproduction or networking permitted without license from IHS Not for Resale [第3頁(yè)] AMERICANNATIONALSTANDARD ANSI/AGMA6011--I03 Contents Page Foreword ............................................................... iv 1 Scope ............................................................. 1 2 Normative references ............................................... 1 3 Symbols, terminology and definitions .................................. 1 4 Design considerations ............................................... 3 5 Rating of gears ..................................................... 7 6 Lubrication ......................................................... 9 7 Vibration and sound ................................................ 12 8 Functional testing .................................................. 15 9 Vendor and purchaser data exchange ................................ 17 Bibliography ........................................................... 51 Annexes A Service factors .................................................... 21 B A simplified method for verifying scuffing resistance .................... 24 C Lateral rotor dynamics .............................................. 26 D Systems considerations for high speed gear drives ..................... 32 E Illustrative example ................................................ 41 F Efficiency ......................................................... 44 G Assembly designations ............................................. 47 H Purchaser’s data sheet ............................................. 48 Figures 1 Amplification factor ................................................. 14 Tables 1 Symbols used in equations ........................................... 2 2 Recommended accuracy grades ...................................... 3 3 Recommended maximum length--to--diameter (L/d)ratios ................ 4 4 Hydrodynamic babbitt bearing design limits ............................. 6 5 Dynamic factor as a function of accuracy grade ......................... 8 6 Recommended lubricants ........................................... 10 7 Casing vibration levels .............................................. 15 ？ AGMA 2003 ---- All rights reserved iii Copyright American Gear Manufacturers Association Provided by IHS under license with AGMA No reproduction or networking permitted without license from IHS Not for Resale --`,,```,,,,````-`-`,,`,,`,`,,`--- [第4頁(yè)] ANSI/AGMA6011--I03 AMERICANNATIONALSTANDARD Foreword [The foreword, footnotes and annexes, if any, in this document are provided for informationalpurposesonlyandarenottobeconstruedasapartofANSI/AGMAStandard 6011--I03, Specification for High Speed Helical Gear Units.] Thefirsthighspeedgearunitstandard,AGMA421.01,wasadoptedasatentativestandard inOctober,1943. Itcontained formulasfor computingthe durabilityhorsepower ratingof gearing,allowableshaftstresses,andincludedashorttableofapplicationfactors. AGMA 421.01wasrevisedandadoptedasafullstatusstandardinSeptember,1947andissuedas AGMA 421.02. The High Speed Gear Committee began work on the revision of AGMA 421.02 in 1951, whichincluded: classificationofapplicationsnotpreviouslylisted;changingtheapplication factorsfrom“K”valuestoequivalentServiceFactors;revisionoftheratingformulatoallow fortheuseofheattreatedgearing;anddevelopauniformselectionmethodforhighspeed gear units. This Uniform Selection Method Data Sheet became AGMA 421.03A. AGMA 421.03 was approved as a revision by the AGMA membership in October, 1954. ThestandardwasreprintedasAGMA421.04inJune,1957. Itincludedthecorrectionof typographical errors and the addition of a paragraph on pinion proportions and bearing span, which had been approved by the committee for addition to the standard at the October, 1955 meeting. InOctober,1959theCommitteeundertookrevisionstocoverdevelopmentsinthedesign, manufacture,andoperationofhighspeedunitswithspecificreferencestohighhardness materialsandsoundlevellimits. TherevisionswereincorporatedinAGMA421.05which was approved by the AGMA membership as of October 22, 1963. The significant changes of 421.06 from 421.05 were: minimum pitch line speed was increasedto5000feetperminute(25meterspersecond);strengthanddurabilityratings werechanged;andsomeservicefactorswereadded. AGMA421.06wasapprovedbythe High Speed Gear Committee as of June 27, 1968, and by the AGMA membership as of November 26, 1968. ANSI/AGMA 6011--G92 was a revision of 421.06 approved by the AGMA membership in October, 1991. The most significant changes were the adaptation of ratings per ANSI/AGMA 2001--B88 and the addition of normal design limits for babbitted bearings. ANSI/AGMA 6011--G92 used “application factor” and not “service factor”. ANSI/AGMA 6011--H98 was a further refineme