1、Copyright 2004 SAE InternationalAll rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, orotherwise, without the prior written permission of SAE.TO PLACE A DOCUMENT
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3、ofthis reportisentirelyvoluntary, andits applicabilityand suitabilityfor any particularuse,including any patentinfringement arising therefrom,isthe sole responsibility of the user.”SAE reviews each technical reportatleastevery five years atwhich timeitmay bereaffirmed,revised, or cancelled.SAE invit
4、es yourwritten comments and suggestions.SHEET 1 OF 4AS14169THIRD ANGLE PROJECTIONAEROSPACE STANDARDAS14169ISSUED 2000-03 REAFFIRMED 2004-03CIRCULAR SPLINE AND ADAPTER DETAILSENGINE DRIVEN ACCESSORIESPREPARED BY SAE COMMITTEE AE-1FEDERAL SUPPLY CLASS 6115NOTICETHIS DOCUMENT HAS BEEN TAKEN DIRECTLY FR
5、OM U.S. MILITARY SPECIFICATION MS14169C(AS), NOTICE 1 AND CONTAINS ONLY MINOR EDITORIAL AND FORMAT CHANGES REQUIRED TO BRING IT INTO CONFORMANCE WITH THE PUBLISHING REQUIREMENTS OF SAE TECHNICAL STANDARDS. THE INITIAL RELEASE OF THIS DOCUMENT IS INTENDED TO REPLACE MS14169C(AS), NOTICE 1. ANY PART N
6、UMBERS ESTABLISHED BY THE ORIGINAL SPECIFICATION REMAIN UNCHANGED.THE ORIGINAL MILITARY SPECIFICATION WAS ADOPTED AS AN SAE STANDARD UNDER THE PROVISIONS OF THE SAE TECHNICAL STANDARDS BOARD (TSB) RULES AND REGULATIONS (TSB 001) PERTAINING TO ACCELERATED ADOPTION OF GOVERNMENT SPECIFICATIONS AND STA
7、NDARDS. TSB RULES PROVIDE FOR (A) THE PUBLICATION OF PORTIONS OF UNREVISED GOVERNMENT SPECIFICATIONS AND STANDARDS WITHOUT CONSENSUS VOTING AT THE SAE COMMITTEE LEVEL, AND (B) THE USE OF THE EXISTING GOVERNMENT SPECIFICATION OR STANDARD FORMAT.UNDER DEPARTMENT OF DEFENSE POLICIES AND PROCEDURES, ANY
8、 QUALIFICATION REQUIREMENTS AND ASSOCIATED QUALIFIED PRODUCTS LISTS ARE MANDATORY FOR DOD CONTRACTS. ANY REQUIREMENT RELATING TO QUALIFIED PRODUCTS LISTS (QPLS) HAS NOT BEEN ADOPTED BY SAE AND IS NOT PART OF THIS SAE TECHNICAL DOCUMENT.CIRCULAR SPLINE AND ADAPTER DETAILSENGINE DRIVEN ACCESSORIESAERO
9、SPACE STANDARDAS14169SHEET 2 OF 4AS14169NAVY DESIGN STANDARD FOR CIRCULAR SPLINE COUPLINGS USED IN AIRCRAFT ELECTROMECHANICAL ACCESSORIES.CIRCULAR SPLINE AND ADAPTER DETAILSENGINE DRIVEN ACCESSORIESAEROSPACE STANDARDAS14169SHEET 3 OF 4AS14169CIRCULAR SPLINE AND ADAPTER DETAILSENGINE DRIVEN ACCESSORI
10、ESAEROSPACE STANDARDAS14169SHEET 4 OF 4AS14169NOTES1. DIMENSIONSALL LINEAR DIMENSIONS ARE IN INCHES EXCEPT ROUGHNESS WHICH ARE IN MICROINCHES.2. APPLICATIONTHE SPECIFIED ADAPTERS MAY BE USED ONLY WITH INVOLUTE SPLINES HAVING 30 DEGREES PRESSUREANGLES.3. SPLINESMALE SHAFT SPLINES SHALL HAVE A MINIMUM
11、 SURFACE HARDNESS OF 34 ROCKWELL C TO A MINIMUMANGLES.4. FINISHALL BURRS AND SHARP EDGES SHALL BE REMOVED.5. APPLICATIONCIRCULAR SPLINE COUPLINGS MAY BE USED AS REPLACEMENTS FOR WORN INVOLUTE SPLINECOUPLINGS WITHOUT MODIFICATION OR REPLACEMENT OF THE AIRCRAFT ACCESSORY DRIVE PAD SHAFT(FEMALE SPLINE)
12、 PRIOR TO RETROFIT, THE FEMALE SPLINE SHALL BE THOROUGHLY CLEANED TOREMOVE SEDIMENT AND GREASE. THE DESIGN RESULTS IN AN INTERFERENCE FIT OF THE SPLINEADAPTER INTO THE INVOLUTE SPLINE AND A SLIDING FIT OF THE CIRCULAR SPLINE SHAFT INTO THEADAPTER.6. INSTALLATIONTHE NONMETALLIC SPLINE ADAPTER IS DES
13、IGNED TO BE INSTALLED IN THE DRIVE SHAFT FEMALE SPLINEPRIOR TO INSTALLING THE DRIVEN ACCESSORY. NONMETALLIC SPLINE ADAPTERS ARE INTENDED TO FITTIGHTLY IN THE FEMALE SPLINE IN WHICH THEY ARE INSTALLED. TO AVOID DAMAGING THE DRIVE SHAFTOR ACCESSORY SHAFT BEARINGS AND SEALS, THE SPLINE ADAPTERS SHOULD
14、BE PRESSED INTO THEMATING SPLINES AND THE PRESSURE SHOULD BE REMOVED AS SOON AS THE SPLINE ADAPTER IS FULLYINSTALLED.7. RETENTION AND PRELOADTHE NONMETALLIC SPLINE ADAPTERS HAVE BEEN DESIGNED TO FIT TIGHTLY IN NEW FEMALE SPLINES. THE TIGHTNESS OF THE FIT WILL DIMINISH WHEN THE NONMETALLIC ADAPTER IS
15、 INSTALLED IN WORN ORUSED FEMALE SPLINES. THE SPLINE ADAPTER HAS BEEN DESIGNED TO FIT TIGHTLY TO ACHIEVE ACOMPRESSIVE PRELOAD WHICH EXTENDS THE OPERATING TORSIONAL RANGE OF THE NONMETALLICSPLINE ADAPTER. THE TIGHT FIT ALSO PROVIDES A RESISTANCE TO AXIAL MOVEMENT WHICH AFFORDSSOME DEGREE OF RETENTION
16、 HOWEVER, THE APPLICATION GENERALLY SHOULD REQUIRE SOMEPOSITIVE METHOD OF AXIAL RETENTION OF THE PART. POSITIVE RETENTION CAN BE ACHIEVED BY AVARIETY OF METHODS INCLUDING LENGTHENING THE NONMETALLIC ADAPTER, INCORPORATION OFFLANGES IN THE ADAPTER DESIGN, AND THE USE OF SNAP OR SPIRAL LOCK RINGS TO
17、LIMIT THE AMOUNTOF AXIAL CLEARANCE.8. MATERIAL SELECTIONTHE PLASTIC SPLINE ADAPTER SHALL BE FABRICATED FROM HIGH STRENGTH, SELF-LUBRICATINGPOLYMERIC MATERIALS HAVING ULTIMATE COMPRESSIVE STRENGTHS OF A MINIMUM OF 28,000 PSI. TYPICAL MATERIALS INCLUDE THE POLYIMIDE, ARAMID AND POLYAMIDE-IMIDE RESINS,
18、 BELONGING TO THEDUPONT VESPEL AND AMOCO TORLON FAMILIES. THE PROCESS OF MATERIAL SELECTION SHOULDCONSIDER STRENGTH, FATIGUE AND AGING PROPERTIES, FLUID COMPATIBILITY, THERMAL EXPOSURE,DIMENSIONAL STABILITY, AND FORMING PROPERTIES.9. SHEAR SECTIONTHE SHAFT SHALL INCLUDE A SHEAR SECTION ALLOWING THE
19、SHAFT TO SHEAR AT THE TORQUESPECIFIED BY THE SPECIFICATION FOR THE ACCESSORY EQUIPMENT.10. PATENT RESTRICTIONUNDER THE CONDITIONS OF PATENT NUMBER 3,620,043, “SPLINE-TYPE PIVOTS, UNIVERSAL JOINTS ANDFLEXIBLE COUPLINGS”, DATED NOVEMBER 16, 1971, ARINC RESEARCH CORPORATION HAS GRANTED TOTHE UNITED STATES GOVERNMENT A ROYALTY-FREE LICENSE TO USE THE DESCRIBED CIRCULAR SPLINECOUPLING DESIGN FOR GOVERNMENTAL PURPOSES ONLY.
