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1、Reference number ISO 9083:2001(E) ISO 2001 INTERNATIONAL STANDARD ISO 9083 First edition 2001-07-15 Calculation of load capacity of spur and helical gears Application to marine gears Calcul de la capacit de charge des engrenages cylindriques dentures droite et hlicodale Application aux engrenages ma
2、rins Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/05/2007 01:32:52 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 9083:2001(E) PDF disclaimer This
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5、e PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. ISO 2001 All rights reser
6、ved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the request
7、er. ISO copyright office Case postale 56 ? CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.ch Web www.iso.ch Printed in Switzerland ii ISO 2001 All rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO Licen
8、see=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/05/2007 01:32:52 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 9083:2001(E) ISO 2001 All rights reservediii ContentsPage Forewordv Introductionvi 1Scope 1 2Normative references1 3Terms, definitions and
9、 symbols.2 4Application .7 4.1Design, specific applications .7 4.2Safety factors.9 4.3Input data9 4.4Numerical equations .10 5Influence factors10 5.1General10 5.2Nominal tangential load, Ft, nominal torque, T, nominal power, P10 5.3Non-uniform load, non-uniform torque, non-uniform power 11 5.4Maximu
10、m tangential load, Ft max, maximum torque, Tmax, maximum power, Pmax11 5.5Application factor, KA11 5.6Internal dynamic factor, Kv.11 5.7Face load factor, KH?.16 5.8Face load factor, KF?24 5.9Transverse load factors, KH?,KF?25 6Calculation of surface durability (pitting) .26 6.1Basic formulae.26 6.2S
11、ingle pair tooth contact factors, ZB, ZD28 6.3Zone factor, ZH.29 6.4Elasticity factor, ZE29 6.5Contact ratio factor, Z?29 6.6Helix angle factor, Z?.30 6.7Allowable stress numbers (contact),?H lim.30 6.8Influences on lubrication film formation, ZL, Zvand ZR.30 6.9Work hardening factor, Zw33 6.10Size
12、factor, ZX.33 7Calculation of tooth bending strength 33 7.1Basic formulae.33 7.2Form factor, YF.35 7.3Stress correction factor, YS39 7.4Helix angle factor, Y?.40 7.5Tooth-root reference strength, ?FE40 7.6Relative notch sensitivity factor, Y? rel T40 7.7Relative surface factor, YR rel T.41 7.8Size f
13、actor, YX.42 Annex A (normative) Tooth stiffness parameters c and c?.43 Annex B (normative) Special features of less common gear designs 46 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Res
14、ale, 04/05/2007 01:32:52 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 9083:2001(E) iv ISO 2001 All rights reserved Annex C (informative) Guide values for application factor, KA51 Annex D (informative) Guide values for crowning and end relief of teeth of cylindrical g
15、ears 52 Annex E (informative) Check and interpretation of tooth contact pattern 55 Bibliography58 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/05/2007 01:32:52 MDTNo reproductio
16、n or networking permitted without license from IHS -,-,- ISO 9083:2001(E) ISO 2001 All rights reservedv Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is norma
17、lly carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in th
18、e work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. Draft International Standards adopted by the technic
19、al committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of patent r
20、ights. ISO shall not be held responsible for identifying any or all such patent rights. International Standard ISO 9083 was prepared by Technical Committee ISO/TC 60, Gears, Subcommittee SC 2, Gear capacity calculation. Annexes A and B form a normative part of ISO 9083. Annexes C to E are for inform
21、ation only. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/05/2007 01:32:52 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 9083:2001(E) vi ISO 2001
22、All rights reserved Introduction Procedures for the calculation of the load capacity of general spur and helical gears with respect to pitting and bending strength appear in ISO 6336-1, ISO 6336-2, ISO 6336-3 and ISO 6336-5. This International Standard is derived from ISO 6336-1, ISO 6336-2 and ISO
23、6336-3 by the use of specific methods and assumptions considered to be applicable to marine gears. Its application requires the use of allowable stresses and material requirements that are to be found in ISO 6336-5. Copyright International Organization for Standardization Provided by IHS under licen
24、se with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/05/2007 01:32:52 MDTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARDISO 9083:2001(E) ISO 2001 All rights reserved1 Calculation of load capacity of spur and helical gears A
25、pplication to marine gears 1Scope The formulae specified in this International Standard are intended for the establishment of a uniformly acceptable method for calculating the pitting resistance and bending strength capacity for the endurance of the main- propulsion and auxiliary gears of ships, off
26、shore vessels and drilling rigs, having straight or helical teeth and subject to the rules of classification societies. The rating formulae in this International Standard are not applicable to other types of gear tooth deterioration, such as plastic yielding, micropitting, scuffing, case crushing, w
27、elding and wear, and are not applicable under vibratory conditions where there may be an unpredictable profile breakdown. The bending strength formulae are applicable to fractures at the tooth fillet, but are not applicable to fractures on the tooth working profile surfaces, failure of the gear rim,
28、 or failures of the gear blank through web and hub. This International Standard does not apply to teeth finished by forging or sintering. This standard is not applicable to gears having a poor contact pattern. This International Standard provides a method by which different gear designs can be compa
29、red. It is not intended to assure the performance of assembled drive gear systems. It is not intended for use by the general engineering public. Instead, it is intended for use by the experienced gear designer who is capable of selecting reasonable values for the factors in these formulae based on k
30、nowledge of similar designs and awareness of the effects of the items discussed. WARNING The user is cautioned that the calculated results of this International Standard should be confirmed by experience. 2Normative references The following normative documents contain provisions which, through refer
31、ence in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of apply
32、ing the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 53:1998, Cylindrical gears for general and heav
33、y engineering Standard basic rack tooth profile. ISO 54:1996, Cylindrical gears for general engineering and for heavy engineering Modules. ISO 701:1998, International gear notation Symbols for geometrical data. ISO 1122-1:1998, Vocabulary of gear terms Part 1: Definitions related to geometry. ISO 13
34、28-1:1995, Cylindrical gears ISO system of accuracy Part 1: Definitions and allowable values of deviations relevant to corresponding flanks of gear teeth. ISO 6336-1:1996, Calculation of load capacity of spur and helical gears Part 1: Basic principles, introduction and general influence factors. Cop
35、yright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/05/2007 01:32:52 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 9083:2001(E) 2 ISO 2001 All rights reser
36、ved ISO 6336-2:1996, Calculation of load capacity of spur and helical gears Part 2: Calculation of surface durability (pitting). ISO 6336-3:1996, Calculation of load capacity of spur and helical gears Part 3: Calculation of tooth bending strength. ISO 6336-5:1996, Calculation of load capacity of spu
37、r and helical gears Part 5: Strength and quality of material. ISO/TR 10495:1997, Cylindrical gears Calculation of service life under variable loads Conditions for cylindrical gears according to ISO 6336. 3Terms, definitions and symbols For the purposes of this International Standard, the terms and d
38、efinitions given in ISO 1122-1 apply. For symbols, see Table 1. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/05/2007 01:32:52 MDTNo reproduction or networking permitted without
39、license from IHS -,-,- ISO 9083:2001(E) ISO 2001 All rights reserved3 Table 1 Symbols and abbreviations used in this International Standard SymbolDescription or termUnit acentre distanceamm bfacewidthmm bBfacewidth of an individual helix of a double helical gearmm c?mean value of mesh stiffness per
40、unit facewidthN/(mm?m) c?maximum tooth stiffness of one pair of teeth per unit facewidth (single stiffness) N/(mm?m) d1,2reference diameter of pinion, wheelmm da1,2tip diameter of pinion, wheelmm db1,2base diameter of pinion, wheelmm df1,2root diameter of pinion, wheelmm dshshaft nominal diameter fo
41、r bendingmm dshiinternal diameter of hollow shaftmm dw1,2working pitch diameter of pinion, wheelmm dNa1,2diameter of a circle defining the outer extremities of the usable flanks of tip chamfered/rounded gear teeth mm fH?tooth alignment deviation (not including helix form deviation)m fmamesh misalign
42、ment due to manufacturing deviationsm fpbtransverse base pitch deviation (the values of fptmay be used for calculation in accordance with ISO 6336-1, using tolerances complying with ISO 1328-1) m fshhelix deviation due to elastic deflections?m g?length of path of contactmm htooth depthmm haPaddendum
43、 of basic rack of cylindrical gearsmm hfPdedendum of basic rack of cylindrical gearsmm hFebending moment arm for load application at the outer point of single pair tooth contact mm lbearing spanmm m*relative individual gear mass per unit facewidth referenced to line of actionkg/mm mnnormal modulemm
44、mredreduced gear pair mass per unit facewidth referenced to the line of actionkg/mm mttransverse modulemm n1,2rotation speed of pinion, of wheel min?1 nEresonance speed min?1 pbnnormal base pitchmm Copyright International Organization for Standardization Provided by IHS under license with ISO Licens
45、ee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/05/2007 01:32:52 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 9083:2001(E) 4 ISO 2001 All rights reserved Table 1 (Continued) SymbolDescription or termUnit pbttransverse base pitchmm prprotuberance of
46、the toolmm qfinishing stock allowance of tooth flankmm qsnotch parameter sFn/ 2?F stooth thicknessmm sFntooth-root chord at the critical sectionmm sRrim thicknessmm u gear ratioa?u? = ?z2/z1?W1 vtangential speed (without subscript: at reference circle ? tangential speed at pitch circle) m/s vpveloci
47、ty parameter x1,2profile shift coefficient of pinion, wheel y?running-in allowance for a gear pairm y?running-in allowance (equivalent misalignment)m znvirtual number of teeth of a helical gear z1,2 number of teeth of pinion, of wheela Aauxiliary value for the determination of fshmm?m/N Btotal facew
48、idth of a double helical gear including the gapmm Catip reliefm CBbasic rack factor (same rack for pinion and wheel) CRgear blank factor Emodulus of elasticity, Youngs modulusN/mm2 Fm the mean transverse load at the reference cylinder ( = FtKAKv)N Ft (nominal) transverse tangential load at reference cylinderN FtH the determinant transverse load at the reference cylinder ( = FtKAKvKH?)N F? total helix de