第6章键花键无键联接销联接

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1、§6－1ThekeyjointChapter6Thecouplingbetweentheaxleandthehub§6－2Thesplinecoupling§6－3Themouldsurfacecoupling§6－4Thepinjoint中南大学§6－1ThekeyjointandThesplinecouplingFunction：hooplocationandcarry-overmomentbetweentheaxleandthehub1.ThetypesofthekeyjointType：straightkey,woodruffkey,taperkey,tangentkey.1).

2、straightkeyjointWorkingsurfaceFeatures：well-centering,assembleanddisassembleeasy.TypesplainkeyguidekeyGapAxle中南大学StructureSingleroundhead(modelC)Roundhead(modelA)Flathead(modelB)ModelAModelBModelCdisccutterAthinstraightkey:itsheightisabout60%~70%heightofnormalkey,oftenusedinthin-wallstructureandh

3、ollowshaftwhereradicalsizelimited.中南大学DrawkeyscrewGuidestraightkeyfixingcrewThehubcanshiftinaxletoformmovingjoint.滑移距离较大时，平键过长，制造困难，故可采用滑键。Structurefeatures：longerinlength,fixedbyscrew.Thescrewismadeinthekeytoeasydisassemble.Drawkeyscrewfixingcrew中南大学Thedouble-dogslidingkeyStructurefeatures：ithas

4、twodogsinitsends,itisfixedinthehub,itslengthisshorterthanthekeyseat.中南大学Theround-dogslidingkeyStructurefeatures：single-round-dog，fixedinthehub.中南大学Table6-1Thesizesofnormalstraightkeyandkeyseat（GB1095-79,GB1096-79）ModelAModelBModelCbhR=b/2C×45˚orr1LLLbhbtd-tbt1d+t1Example：round-endedkey(modelA):K1

5、6×100GB1096-79squarekey(modelB):KB16×100GB1096-79Single-round-endedkey(modelC):KC16×100GB1096-79d中南大学dbhCorrLtt1RadiusrContinuedT6-1SizesofkeyKeyseatDiameterofaxleFrom6~8226~201.21〉8~10330.16~0.256~361.81.40.08~0.16〉10~12448~452.51.8〉12~175510~563.02.3〉17~22660.25~0.414~703.52.80.16~0.25〉22~30871

6、8~904.03.3〉30~3810822~1105.03.3〉38~4412828~1405.03.3〉44~501490.4~0.636~1605.53.80.25~0.4〉50~58161045~1806.54.3〉58~65181150~2007.04.4〉65~75201256~2207.54.9〉75~85221463~2509.05.40.6~0.80.4~0.6中南大学2).WoodruffjointFeature：well-centering,assembleeasy.因半圆键能在轴槽中摆动以适应轮毂槽底面。Defects：Thestrengthoftheaxleisw

7、eakenedinahigherdegreesothatitisonlyusedinlightloadjoint,especially,inpanhead.Workingsurface中南大学3).ThetaperkeyjointandtangentkeyjointStructurefeature：Thereistaper1:100intheoversurfaceofthekeyandinthebottomofthehubgroov