第5章螺纹联接和螺旋传动ppt课件.ppt

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1、Chapter5Screwjointsandscrewdrive§5－1Screwthread§5－2TypesofScrewthreadandStandardjoint§5－3Pre-tighteningofscrewjoints§5－5Strengthcalculationofscrewjoint§5－7Materialandadmissiblestressofscrewbolt§5－8Measuresofimprovingintensityofscrewboltjoint§5－9Screwdrive§5－4Loosenesspreventingofscrewjoint§

2、5－6Designofjointofscrewboltgroup仰违撤冬鹿香结孔丧返萌穗豌筑鸟扑嫁罪尊娱崭聚痢裁滚熄趣踩更脚罕融第5章螺纹联接和螺旋传动第5章螺纹联接和螺旋传动ⅠFormingofscrewthread§5－1Screwthreadd2Helicalline----thelocusofamovingpointwhichrotatesaroundaxis,andatthesametimemovesalongtheaxisinconstantvelocityonthesurfaceofcylinder。Screwthread----Aplanefiguremove

3、salongahelicallineandkeepsitselfthroughtheaxisofthecylinderwhenmoving.Thenscrewthreadisformed.Screwthread丝肋讼晴度桓抱藉少挖餐押侵省菩溺设宅瞧淑讥粘晚井少无窿诺卯铂凶忿第5章螺纹联接和螺旋传动第5章螺纹联接和螺旋传动AccordingtothetypeoftoothofscrewthreadTypesofscrewthreadAccordingtothedirectionofrotationofscrewthreadAccordingtothenumberofhelica

4、llineAccordingtoinsideandoutsidesurfaceofsolidofrotationAccordingtoThefunctionofscrewthreadAccordingtotheshapeofbodyofrevolutionRectanglescrewthreadTrianglescrewthreadTrapeziumscrewthreadHacklescrewthread舱逗究谦披梅刁轴标靴溶跑径追爸嘘抢井酒眉隧畏瓦樟捌宽洋紊庇迎嚼贷第5章螺纹联接和螺旋传动第5章螺纹联接和螺旋传动ThetypeoftoothofscrewthreadSqua

5、rethreadTrianglethreadTrapezoidalthreadButtressthread15º30º3º30º杂燃刀蹈政虎泡碾芬钧婉嫁镐伤荚真液淮辅着滦淌桃署然占付驭跟成轻耘第5章螺纹联接和螺旋传动第5章螺纹联接和螺旋传动RectanglescrewthreadTrianglescrewthreadTrapeziumscrewthreadHacklescrewthreadright-handthreadleft-handthreadAccordingtothetypeoftoothofscrewthreadTypesofscrewthreadAccordin

6、gtothedirectionofrotationofscrewthreadAccordingtothenumberofhelicallineAccordingtoinsideandoutsidesurfaceofsolidofrotationAccordingtoThefunctionofscrewthreadAccordingtotheshapeofbodyofrevolution交沸糟朱棋殖乃老彼垮蛮霞劳票怜能城瘫曹赦花铱偏谢讽懂香优敏橙甸咳第5章螺纹联接和螺旋传动第5章螺纹联接和螺旋传动RectanglescrewthreadTrianglescrewthreadTr

7、apeziumscrewthreadHacklescrewthreadright-handthreadleft-handthreadsingle-startthreadmulti-startthreaddouble-startthreadsingle-startthreadPSS=2PPSPS=Pnthread:S=nPn≤4AccordingtothetypeoftoothofscrewthreadTypesofscrewthreadAccordingtothedirectionofrotationo