STANDARD
ANSIB92.1b-1996
AddendumtoANSIB92.1-1970(includingANSI B92.1a-1976)
ApprovedbytheAmericanNationalStandardsInstitute
Involute Splines
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STANDARD
ANSIB92.1b-1996
AddendumtoANSIB92.1-1970(includingANSIB92.1a-1976)
ApprovedbytheAmericanNationalStandardsInstitute
Involute Splines
substantially concerned with its scope and provisions.An An American National Standard implies a consensus of thoseAmerican National Standard is intended as a guide to aid themanufacturer the consumer，and the general public.The existence of an American National Standard does not in anyrespect preclude anyone whether he has approved thestandardornot from manufacturing marketing purchasing to the standard.American National Standards are subject to or using products processes or procedures not conformingperiodicreview and users are cautioned to obtain the latesteditions.
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TABLEOFCONTENTS
Page
Section IiteForeword.Splines. 31.1 1.2 Purpos... General... .3 31.3 Scope... 3Reference.Spline Terms and Definitions. 3IV Symbols. .3Dimensioningv 4V1 SampleProblem. 15
LISTOFILLUSTRATIONS
Page
Figure
1 Tooth thickness space width and minimum effective clearance2 Samplecalculationforeccentricity. 7
LISTOFTABLES
Iable1 Equationsfor spline dimensions. 112 Equations for spline variations.. 14
Page
STD.SAEB92.1-ENGL199679437250584673751
FOREWORD
TheB92.1inchandpanionmetricconvertedspline standardswerefirstreleased in1970.AddendumB92.1awasreleased in1976 wherethe onlychange wastoadda definition paragraph2.1.1Effective Spline.Editorialand mathematicalcorrectionstotabulardimensionshavebeenmadeseveraltimessincethatfirstprintingwithoutaffectinginterchangeabilitywithpreviousversionsandwithoutchangetotheoriginaldimensioningandtolerancingconcepts.Theconvertedmetricversionisnolongeravailableduetothereleaseof theB92.2MMetricModuleSplineStandard in 1980.
and tolerancing practices consistent with the moremodern B92.2M standard.The B92.1b addendum wil be maintainedonly in a U.S.non-metric version.
standardbutifinterchangebilityrequredthrhoulderitythatinterchangeabitywilnteaffetdin thoseprovidedwith the B92.1standard.Itisnot intendedforthese changestoaffectinterchangeabilitywith theB92.1conforming to B92.1dimensions arepresumed tobeused unlessboththeuserand the supplier specifically agree thatdimensions are to be according to B92.1b.
