SAE ANSI B 92 1-1996 Involute Splines and Inspection (BEST COPY AVAILABLE).pdf

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1、STANDARDANSI 892.1-1996Approved by the AmericanNational Standards InstituteInvolute Splinesand InspectionSponsored by:Society of Automotive Engineers, Inc.American Society of Mechanical EngineersPublished by:Society of Automotive Engineers, Inc.400 Commonwealth DriveWarrendale, PA 15096-001U.S.A.Pho

2、ne: (724) 776-4841Fax: (412) 776-5760STANDARDANSI 892.1-1996Approved by the AmericanNational Standards InstituteInvolute Splinesand InspectionSponsored bySociety of Automotive Engineers, Inc.American Society of Mechanical EngineersPublished by:Society of Automotive Engineers, Inc.400 Commonwealth Dr

3、iveWarrendale, PA 15096-0001U.S.A.Phone: (412) 776-4841Fax: (412) 776-5760DEDICATIONThis document is dedicated to the memory of Albert S. Beam. It was Mr. Beamwhoevolved the concept ofeffective specification for spline fit concrol. Thisstandardis bued 011 that concept.An American National Standard i

4、mplies a consensus of those sub stantially concerned with its scope- and provisions. An AmericanNational Standard is intended as a guide to aid the manufacturer,the consumer, and the general public. The existence of an AmericanNational Standard does not in any respect preclude anyone, whetherhe has

5、approved the standard or not, from manufacturing, marketing,purchasing, or using prodUCts, processes, or procedures not con forming to the standard. “merican National Standards are subject toSAE Technical Board Rules and RegulationsAll technical reports, including standards approved and practicesrec

6、ommended, are advisory only. Their use by anyone engaged inindustry or trade is entirely voluntary. There is no agreement toadhere to any SAE Standard or SAE Recommended Practice, and nocommitment to conform to or be guided by any technical report.jjperiodic review and users are cautioned to obtain

7、the latest editions.CAUTION NOTICE: This American National Standard may berevised or withdrawn at any time. The procedures of the AmericanNational Standards Institute require that action be taken to reaffinm,revise, or withdraw this standard no later than five yeans from thedate of publication. Purc

8、hasers of American National Standards mayreceive current information on all standards by ceiling or writing theAmerican National Standards Institute.In fonmulating and approving technical reports, the Technical Boardits Councils and Committees will not investigate or consider patentl!which may apply

9、 to the subject matter. Prospective usens of tIMreport are responsible for protecting themselves against liability tolinfringement of patenta.Copyright 1996 Society of Automotive Engineers, Inc.Printed in U.S.A.METHOD OF ROUNDINGMethod 0 Rou“dl“gSymbolI“che.Millimetre.0 7 significant figure 7 signif

10、icant figure., convertedDb simply rounded.fram calculated inch value, thensimply rounded.0,; 3 place. to right af decimal 2 place. to right 0 decimal,All value. except to and including 48/96 spline pitch. cGllverted “- rounded inch volue.Major Dia fit 4 place. to right a decimal altave then rounded

11、in direction of48/96 .pline pitch. Simply rounded. additional dearance.0,; 4 place. to right of decimal, 3 place. to right 0 decimal.Major Dia fit simply rounded. converted “- rounded inch value.then rounded in direction 0additional clearonce.OF; and OJ 3 place. to right of decimal 2 place. to right

12、 of decimal.ta and induding 48/96 .pline pitch. converted “- rounded inch value,4 place. to right of decimal altave then rounded in direction of48/96 spline pitch. Rounded additional clearance.in direction of clearance.In moxa Calculated from rounded 3 place. to right of decimal, con4 place. to righ

13、t of decimal, verted“-rounded inch value, thensimply rClUftded. rClUftded in direction of dearaftCe.Sv min 4 ploce. to right of decimal. 3 piac to right of decimal, con.,max simply rounded. verted“-rounded inch va.rClUftded in direction of dearance.In .minD Calcvlated from rounded y 3 place. to righ

14、 of decimal. con4 plac to right of decimal. verted“- rounded inch value,thensimply rounded. rounded in direction of clearance.00 3 place. to right of decimal 2 plac to right of decimal,All value. except to and including 48/96 .pline pitch. converted “-rounded inch value,Major Dia fit 4 place. to rig

15、ht of decimal altave then rounded in direction of48/96 .pline pitch. Simply rounded. odditional e1earo“ce.Do 4 place. to right of decimal, 3 places to right of decimol, con-Major Dia fit simply rounded. verted from fOUIlded inch value, th.“-CIed in direction a deara“ce.OF. 3 place. to right of decim

16、al 2 places to right of decimal, con-to a“d including 48/96 .pline pitch. verted from rounded inch value,then4 place. to right of decimal “-Clod in direction of dearance.above 48/96 spline pitch. Roundedin directiGl of dearance.0,.3 place. to right 0 decimal 2 place. to right of decimal, conto and i

17、ndudi“g 48/96 .pline pitch. verted from rounded inch value.then4 place. to right 0 decimal altave .-ded in direction 0 clearance.48/96 spline pitch. Simply rOUlded.“ Subscript n desiglQte. toleta“ce do.iiiSAE 892 INVOLUTE SPLINES AND INSPECTION COMMITTEEOFFICERSD. L. Thurman, ChairmanR.W. Cedoz, Vic

18、e ChairmanKen McElroy, SecretaryPhillip G. BosmanIntegrated Computer Technologies Inc.Dearborn, MIMichael D. CallesenMikmar EnterprisesStrongsville, OHRobert W. CedozAllison Engine Co.Indianapolis, INMichael ChaplinContour Hardening, Inc.Indianapolis, INCharles DieterleC-Dot Engineering CompanyPlymo

19、uth, MIRichard T. FriedmanParker Hannifin Corp.Waltham,MADale GardenAnderson Cook Inc.Fraser, MIDavid GrahamGeneral Broach ASA85.26-1950, American Standard for Involute Serrations; and ASA85.31-1953, American Standard for Involute Splines and SerrationsGages and Gaging.Most of the features of the 19

20、60 standard are retained; plus theaddition of three tolerance classes, for a total of four. The term“involute serration,“ formerly applied to involute splines with 45 degpressure angle, has been deleted and the standard now includesinvolute splines with 30, 37.5, and 45 deg pressure angle. Tables fo

21、rthese splines have been rearranged accordingly. The term “serration“will no longer apply to splines covered by this standard.The revised standard now has only one fit class for all side fitsplines; the former Class 2 fit. Class 1 fit has been deleted because ofits infrequent use. The major diameter

22、 of the flat root side fit splinehas been changed and a tolerance applied to include the range of the1950 and the 1960 standards. Note the interchangeabilitylimitations when used with internal splines made to previousstandards (see Appendix A, Section 26). Each of the three types ofsplines is preced

23、ed by drawing instructions and explanatory data.There have been no tolerance nor fit changes to the major diameterfit section. A survey indicated limited interest in major diameterfit splines and for this reason additional tolerance classes were nottabulated as they were for side fit splines.This re

24、vision recognizes the fact that proper assembly betweenmating splines is dependent only on the spline being within effectivespecifications from the tip of the tooth to the form diameter.Therefore, on side fit splines, the internal component major diameternow is shown as a maximum dimension and the e

25、xternal componentminor diameter is shown as a minimum dimension. The minimuminternal major diameter and the maximum external minor diametermust clear the specified form diameter and thus do not need anyadditional control.The spline specification tables now include a greater number oftolerance level

26、selections. These new tolerance classes were addedfor greater selection to suit end product needs. The selections differonly in the tolerance as applied to space width and tooth thickness.The tolerance class which was used in ASA B5.15-1960 is the basisand is now designated as tolerance Class 5. The

27、 new toleranceclasses are based on the following formulas:Tolerance Class 4 = Tolerance Class 5 x 0.71Tolerance Class 6 =Tolerance Class 5 x 1.40Tolerance Class 7 =Tolerance Class 5 x 2.00AU dimensions, listed in this standard, are for the finished part.Therefore, any compensation that must be made

28、for operationsvwhich take place during processing, such as heat treatment, mustbe taken into account when selecting the tolerance level formanufacturing.The standard has the same internal minimum effective space widthand external maximum effective tooth thickness for all toleranceclasses and has two

29、 types of fit. For tooth side fits, the minimumeffective space width and the maximum effective tooth thickness areof equal value. This basic concept makes it possible to haveinterchangeable assembly between mating splines where made to thisstandard regardless of the tolerance class of the individual

30、 members.This allows a tolerance class “mix“ of mating members which often isan advantage where one member is considerably less difficult toproduce than its mate, and the “average“ tolerance applied to the twounits is such that it satisfies the design need. For instance, this can bethe result of spe

31、cification of Class 5 tolerance to one member andClass 7 to its mate, thus providing an assembly tolerance in the Class6 range. The maximum effective tooth thickness is less than theminimum effective space width for major diameter fits to allow foreccentricity variations. The table values have been

32、changed asfollows:1. Pitch diameter and base diameter are shown to seven significantdigits in order to be correct to the number of places used in allcalculations.2. AU other diameter values, other than major diameters for majordiameter fit, have been reduced to three places to the right ofthe decima

33、l point and rounded toward the direction of moreclearance.In the event the fit as provided in this standard does not satisfy aparticular design need and a specific amount of effective clearance orpress fit is desired, the change should be made only to the externalspline by a reduction or an increase

34、 in effective tooth thickness and alike change in actual tooth thickness. The minimum effective spacewidth, in this standard, is always basic. This basic minimum effectivespace width should always be retained when special designs arederived from the concept of this standard.A revision was approved b

35、y SAEin June 1969 and was submittedto theAmerican National Standards Institute for adoption as an ANSIStandard under the existing standards procedures. This was grantedon August 18, 1969.This standard was reaffirmed by committee vote in 1996 andincludes the following corrections and verifications:1.

36、 Table 107a was created to provide values for mlOlmumeffective clearance used for Major Diameter Fit as referenced inTable 106.2. Table 105 was revised to show proper symbols for minimumeffective space width and maximum effective tooth thickness.3. Table 64 was revised to show values for machining t

37、olerancesto 5 decimal places.4. Tables 53 through 63 were revised to incorporate correct formclearance values in the calculations for internal and externalform diameters.5. Changes of 0.001 were made to 38 internal minor diametervalues scattered throughout the 30 and 37.5 degree dimensionaltables to

38、 correct computer rounding.INVOLUTE SPLINES1. Splines1.1 General1.2 Purpose1.3 Scope1.3.1 Spline Tooth Dimensions1.3.2 Units of Measurement2. Spline Terms and Definitions2.1 Spline2.2 Internal Spline2.3 External Spline2.4 Involute Spline2.5 Fillet2.6 Fillet Root Spline2.7 Flat Root Spline2.8 Diametr

39、al Pitch2.9 Stub Pitch2.10 Spline Pitch2.11 Pitch Circle2.12 Pitch Diameter2.13 Pitch Point2.14 Circular Pitch2.15 Pressure Angle2.16 Standard (Main) Pressure Angle2.17 Base Circle2.18 Base Diameter2.19 Major Circle2.20 Major Diameter2.21 Minor Circle2.22 Minor Diameter2.23 Form Circle2.24 Form Diam

40、eter2.25 Depth of Engagement2.26 Basic Space Width2.27 Actual Space Width2.28 Effective Space Width2.29 Actual Tooth Thickness2.30 Effective Tooth.Thickness2.31 Effective Clearance2.32 Theoretical Maximum Clearance2.33 Form Clearance2.34 Total Index Variation2.35 Profile Variation2.36 lead Variation

41、2.37 Parallelism Variation2.38 Alignment Variation2.39 Out of Roundness2.40 Effective Variation2.41 Variation Allowance2.42 Machining Tolerance2.43 Total Tolerance2.44 length of Engagement2.45 Active Spline length2.46 Reference3. Symbols4. Pressure Angle (Standard)5. Type of Fit5.1 Side FitCONTENTS5

42、.2 Major Diameter Fit5.2.1 Fillet Root11 6. Classes of Tolerances11 7. Fillets and Chamfers1 7.1 Internal Splines with Flat Root1 7.2 Fillets on 30 Pressure Angle Flat Root Splines7.3 Fillets on 300Pressure Angle Fillet Root Splines1 7.3.1 Tabulated Dimensions1 7.4 Corner Clearance1 7.4.1 Standard I

43、nternal Splines11 8. Spline Variations1 8.1 Profile Variation1 8.2 lead Variations1 8.2.1 lead Tolerance1 8.3 Out of Roundness1 8.4 Eccentricity1 8.4.1 Side Fit1 8.4.2 Major Diameter Fit1 8.4.3 Alignment11 9. Effect of Spline Variations1 9.1 Index Variations1 9.2 Profile Variations1 9.3 lead Variati

44、ons1 9.4 Variation Allowance11 10. Effective and Actual Dimensions1 10.1 Effective and Actual Space Width1 10.2 Effective and Actual Tooth Thickness1 10.3 Effective Clearance1 10.4 Space Width and Tooth Thickness Limits10.4.1 Min!mum and Maximum Effective Values11 11. Use of Effective and Actual Di

45、mensions2 11.1 Minimum Effective Space Width and Maximum2 Effective Tooth Thickness2 11.2 Minimum Actual Space Width and Maximum Actual2 Tooth Thickness2 11.2.1 Taper2 11.3 Maximum Actual Space Width and Minimum Actual2 Tooth Thickness2 11.4 Maximum Effective Space Width and Minimum2 Effective Tooth

46、 Thickness2 11.4.1 Alternate Method A2 11.4.2 Alternate Method 822 12. Spline Tables2 12.1 Dimensions and Tolerances?2 13. Drawing Data2 13.1 Spline Data and Reference Dimensions2 13.2 Combination of Types2 13.2.1 Flat Root Internal Used with Fillet Root External13.2.2 Design Option214. Internal 45

47、Pressure Angle Splines with5 Straight Sided Option14.1 Straight Profiles5 14.2 Internal Form Angle5 14.3 Profile Tolerancesvii55555555666666666666666666667788888888888888882828282INSPECTION15. Purpose and Scope15.1 Inspection Methods15.1.1 Routine Inspection15.1.2 Analytical Inspection16. Inspection

48、 with Gages16.1 Types of Gages16.1.1 Composite Spline Gage16.1.2 Sector Spline Gage16.1.3 Paddle Gage16.1.4 Snap Ring Gage16.1.5 Progressive Gage16.2 Go and Not Go Gages16.2.1 Go Gages16.2.2 Not Go Gages16.3 Effective and Actual Dimensions16.3.1 Effective Dimensions16.3.2 Actual Dimensions16.4 Funct

49、ion and Selection of Gages16.4.1 Control Dimensions16.5 Side Fit and Major Diameter Fit Gages16.5.1 Side Fit Gage.16.5.2 Major Diameter Fit Gage16.5.3 Independent Inspection16.6 Gages for Involute Splines16.7 Tolerances for Measurement with Pins17. Gage Blanks .17.1 Standard Blanks17.1.1 Pilots17.2 Alignment Gage Blanks18. Gages for Internal Splines18.1 Go Co“,posite Side Fit Plug Gage18.2 Not Go Composite Plug Gage18.3 Go Composite Major Diameter Fit Plug Gage18.4 Not Go sector Plug Gage18.5 Major Diameter Plug Gage18.5.1 Not Go Gage18.5.2 Go Gage18.6 Plug G