机械基础练习题练习题

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2311.ḄḄᨵ?ᙠ!"Ḅ#$%&'()*&+,-./ᐸ12⌕45671.8967:;&567Ḅ<⌕=>9671.ᢣ@ABC7210ACஹ6204Ḅ967ḄLMNᑁPQR&STUVACA⊤஺2.ᢣ@ABC7308Cஹ30205Ḅ967ḄLMNᑁPQR&STUVCA⊤஺3.ᢣ@ABC30210ஹ6203Ḅ967ḄLMNᑁPQR஺4.ᢣ@ABC7206ACஹ30203Ḅ967ḄLMNᑁPQR&STUVACA⊤஺5.ᢣ@ABC30310ஹ6200Ḅ967ḄLMNᑁPQR஺6.\]₹Ḅឋ`Nᜧbஹcdஹefឋgh☢&ST᝞⌱ᵨᳫ789m7஺7.ᢣ@ABC7211Cஹ6202Ḅ967ḄLMNᑁPQR&STUVCA⊤஺8.967ᜫᦔḄ<⌕pqrs8t:u+&⌱ᵨ*ᔜ+wx"yz{Ḅ|d8}⊝1.z{ḄcCᨵd6C⌕|⁚zᘤḄd6ᑡsd6(Ḅ஺2.ᕜឋd6Nᕜឋd6ᔜ@r஺rsd6ᔜᵨh|⁚3.ᜮḄஹḄஹ¡ᢑ£¤zḄஹ¥¦zḄஹ§¨zḄᔜᙠᜐª«ᙠzᘤ%ᔜ¬ḼḄ®ᵨ4.}ᙳdN(ᙳᒴᦪ(ᙳᒴᦪᔲ⌱²³b³´µ¶·ᔲ¸¹º»uᒴdc65.¼½bd6&c6¾¿:ÀḄ+¶ᙠÁdÂÃÄdÂ஺6.⌕4wx}⊝ḄÅcÆ&᝞ÇÈwx☟}⊝ᔲÊ˹½Ì(}⊝`¿⌼ᡂḄ(7.ÏPÐÅcÆ}⊝*C⌕ᵨÏPÐᩭ⊤Ò(}⊝¿Ḅᜧb8.CS&e#☟}⊝Ḅcm(ÊË6}⊝Ḅ&e#6}⊝ḄcmÓË☟}⊝Ḅ஺Ôஹ"y⚪z᪀×ᡂᑡq"y᝞ØᡠÒᔜ6ÚḄÛÜÝÞᢣ@ßᔠáÚஹâãÛᵫåæçèé&Þᑨëᐸ¹ᔲᡂCz᪀ÝØ%ìᨵíᜮḄ᪀ÆC<6Æé஺1-10.

24}☢ïᩚz᪀1.ᢥØ1-3ᡠò@ḄQR,ᑖ᪆öËᔜ᪀ÆḄ÷ø஺Ø1-32.Ø1-4ABᩚ®ᒴdᙊᕜ6&cᔣ᝞ØÒ஺ûü:(1)ᵨ®Øþ@5ᙽEḄ
᩽▲஺(2)ᵫᑨᙽᔲᙠញញᔣᔣ1)᪀ᙽ!ᢣ#$%ABḄ
“'(“஺2))᪀ᵫ*+,-᪀ὶᔠ0ᡂ3)ᙽ3456789:ὶ;

251-43.>#1-5᪀Ḅ᩽ᜳC0EFGḄញᔣ!HIJ᪀KL஺᪀GKLr1஺1-54.OPᩚ᪀R!STᔜ᪀GVWLAB=55mm,LBC=40mm,LCD=50mm,LAD=25mm,*᪀Gabcde$%᤯ᩚ᪀*᪀Gabcdeg᤯ᩚ᪀*᪀Gabcdeg$%᪀5.hij$%᤯ᩚ᪀!$%ABEkADlᡂjmnopqr᝞ᡠOu!$%⌮o┐ᔣxy%=143°o!᤯ᩚ᤮ᑮ~᩽▲஺TJ᤯ᩚḄᦪK=l.H7647,᤯ᩚDC=50mm,kAD=75mm஺Jᵨᑖ᪆i$%EᩚḄVW஺6.Tj$%ᙽ᪀᝞ᡠO஺ᐸR,e=10mm,$%VW0mm,ᩚVW=70஺r1uᵨᙽḄVWr2uᙽGo᪀Ḅ'(஺7.hij$%ᙽ᪀᝞ᡠO஺TᙽḄᦪK=l.5,ᙽḄLac2=50nm,4Ḅe=20mm஺$%VWL,ஹ“EᩚVWL*

268.ᙠO¢£Pᩚ᪀R!Tᔜ᪀GVWLM=150nim,¦=120>™,L©100mm,ADk஺r1uªeᑮg$%᪀,Ḅᨬ¬஺r2u®¯=60mm!ᑣ᪀ᔲᙠ$%ᢣ#±+ᩚrjᡈ
u$%eᑮḄ*³᪀9.j$%᤯ᩚ᪀ḄF᤯ᩚCDḄVWLct>=84mm,᤮C஻=45",¸Ḅ
᩽▲CJuEC?D᝞ᡠO!u—tmmḄ¼½Fjு¿஺À⌕F᤯ᩚḄᦪK=l.4,kADḄVW5=63mm஺hiÂ᪀!#$%ABEᩚBCḄVW5EL»BC10.¢£Pᩚ᪀Ḅ,-ÃÄᨵ*¯³jTÆ£Pᩚ᪀ᔜ᪀GḄVWᑖÇa=240mm,b=600nmi,c=400mm,d=500m®஺ËÌᑖÇ®aஹbஹcஹdko!Íᔜeᑮ³᪀ÎÏ᪀1.Ð2TᡠOÒÃÎÏÓᡂÔᑡIr1uÖ#,ᙊஹᳮÙÏÚ$nEÛÜC஺ᢣ#Ý▭ÏÚ$n஺ÌÎÏßAஹB
(3FG;àoஹÛÜC᝞áᓄr2uFGßjᓣEÔä!ÎÏxC8EFGåæḄhᔜèé2-12.ᢥ2-2ëìëíÎÏÏÚ$nîᑴ#Fᩚð$n஺

272-23.2-3᪀ᵫ±+ᐺò᪀0ᡂ$%ᒴôx!ÎÏÍ89ᵨõᜮ᪗#oFᩚḄᔣ!Ö#ÎÏᳮÙÏÚ$n(ùú)EÛÜC஺4.ðFGÒÃÎÏ᪀!TJüoÎÏḄxCR=⚓/2,h=50mm஺JÌÎÏx«l=10s-lஹஹᵨḄḄᨬᜧumax,ᨬᜧamaxḄ%&ᡠ()Ḅ*+,-Vo5.234Ḅ5634ᢥ89:ᓣ30mm,()*+,-জ=180°@34AஹBCDᜐ()*+,-F120஺@I*+,Jᒕ-34L஺MNᑴP34ḄQRST஺U+V᪀1.2(XYT᪗[\Uᙊ^U+᜜`ᔠbcdbei=2.5,U+gᦪm=10nm,jU+ḄUᦪZi=40,(1)ojU+Ḅᑖᙊ\qU⚔ᙊ\qs(2)o᪗[tuḄvwxa(3)yz▭tuḄvwxae᪗[vwxaᜧ1mm,o|U+bḄ`ᔠ-a'஺2.2(XYT᪗[\Uᙊ^U+᜜`ᔠbcdbei=3,U+gᦪm=5mm,᪗[vwxa=200mm,(1)ojU+ḄUᦪᔲஹᑖᙊ\qdஹU⚔ᙊ\qcL(2)yz▭tuḄvwxa=201mm,o|U+bḄbei`ᔠ-a'஺

283.-(XYT᪗[\Uᙊ^U+᜜`ᔠbcd᪗[vwxa=90mm,jU+ḄUᦪ=20ஹU⚔ᙊ\qd*65.8mm(1)ojU+Ḅgᦪm(2)oᜧU+ḄUᦪZ2ᑖᙊ\qdzஹU⚔ᙊ\q42஺4.2(XYT᪗[\Uᙊ^U+᜜`ᔠbdbei=2.5,ᜧU+ḄUᦪZz=60ஹU⚔ᙊ\qP123.8mm(1)oU+Ḅgᦪm(2)ojU+ḄUᦪZ”ᑖᙊ\q&ஹU⚔ᙊ\qd”(3)o(U+bḄ᪗[vwxa஺5.-(XYT᪗[Uᙊ^U+᜜`ᔠbcdU+Ḅᔣgᦪm„=4mm,jU+ḄUᦪZi=19,ᜧU+ḄUᦪ=60,᪗[vwxa=160mm,(1)o(U+Ḅ-B(2)U+Ḅᑖᙊ\qᓅஹdz,U⚔ᙊ\qdalஹda2o6.ᙠ2(XYT᪗[Uᙊ^U+᜜`ᔠbcU+Ḅᔣgᦪm“=5mm,jU+ḄUᦪZ.=23,ᜧU+ḄUᦪZz=76,(1)oI-8=15஺,ᐸtuḄvwxa5¢£(2)y⌕¥vwx¦᦮55Ḅ¨ᦪ©ªB-«ᓄᨬjB-)5¢ᜧ(3)¦᦮U+Ḅᑖᙊ\qᓅஹdz,U⚔ᙊ\qdal>da2o7.ᙠ2(XYT᪗[Uᙊ^U+᜜`ᔠbcbei=2U+Ḅᔣgᦪm0=4mm,jU+ḄUᦪ4=33,(1)oI-6=10°ᐸtuḄvwxa5¢£(2)y⌕¥vwx¦᦮55Ḅ¨ᦪ©ª6-«ᓄᨬj6-)5¢ᜧ(3)¦᦮U+Ḅᑖᙊ\q¯ஹdz,U⚔ᙊ\qwஹ8.2(XYT᪗[Uᙊ^U+᜜`ᔠbcdU+Ḅᔣgᦪm„=4mm,jU+ḄUᦪZ,=22,ᜧU+ḄUᦪZ=77,᪗[vwxa=200mm,(1)o(U+Ḅ-P(2)U+Ḅᑖᙊ\q±ஹ2d,U⚔ᙊ\q²ஹd,2a29.2(XYT᪗[\Uᙊ^U+᜜`ᔠbcdbei=3,jU+ḄUᦪZi=24ஹU⚔ᙊ\qw=103.8mm(1)oU+Ḅgᦪm(2)oᜧU+ḄUᦪ³ஹᑖᙊ\qjஹU⚔ᙊ\q&2(3)o(U+bḄ᪗[vwxa஺10.2(XYT᪗[\Uᙊ^U+᜜`ᔠbcd᪗[vwxa=150mm,jU+ḄUᦪZ,=23.U⚔ᙊ\qdal=74.9mm(1)ojU+Ḅgᦪm(2)oᜧU+ḄUᦪZ2ᑖᙊ\qd2ஹU⚔ᙊ\qda2஺11.cd2(᜜`ᔠXYT\U+bZl=14,Z2=30,m=3mm,a=200,⌕oU+´᪷ᑗM·U+U⚔¸஺12.ᵨUᩩºᑐᡂ¾2XYTU+¿ᦪ56ha*=l,c*=0.25,a=200,m=4mm஺yᑐᐹR5vᑐ=0.002m/s,Mo6(1)ᑗᑴz=15Ḅ᪗[U+ᑐᐹvTÄ+ᕦvwḄxÆL)5¢£ÇȾU+,nl)5¢£Ç(2)ᑗᑴz=15Ḅ᪗[U+y«QÉᦪx=l,ᑣL)5¢£Çnl)5¢£Ç13.cd2(᜜`ᔠ\Uᙊ^U+¿ᦪ5,ha*=l,c*=0.25,Zl=12,Z2=56,m=4mm,a=200,xl=0.3,x2=-0.21(1)MË(U+FᔲÌÍ᪷ᑗÇ(2)o+U⚔ᙊ\q஺14.Îᨵ2U+ᙊÐqrb=35mm,o6(1)IXYT:Ðqrk=50mmᐸÔ³-akஹÕ-9kS᳛ÐqPk)5¢£Ç(2)Ia=20°ஹ15°,y&0)5¢£Ç

29+É1.ᙠØÙ+Évcd∍ᩚ3'5ÜᜮÞ∍ᩚ∍+4ḄUᦪ5Z,=60@ᐸᔜU+ḄUᦪ56Z,=20,Z=30,2Z@=30,23=16,Z@=20,-yU+1Ḅ,ᔣ᝞ØᡠÙm=1440rpm஺MoU+5Ḅ,âḄᜧjz60o&ᐸ,ãᔣ஺2.ᙠØÙ+Évcdᔜ+Uᦪ56Z.=30Z2=30,,Z=90,Z3=40,Z=30,Z6=40,Mo(34Z5=30o|+ÉḄbei(Ho3.ᙠØÙ+ÉvcdÜᜮÞ∍ᩚḄ,m=900rpm,,ᔣ᝞ØᡠÙᔜU+ḄUᦪ56Z=60,Z2=25,2Z3=20,Z3=25,z,=20,Z@=45,%25,Z@=28,76=135஺MoU+6,1Ḅᜧj&ᐸ,ãᔣ஺4.cdZi=40,Z=20,æ"MᙠØÙ+ÉvU+2Ḅè(-Ḅᜧjãᔣ஺25.ᙠØÙ+ÉvcdᔜU+ḄUᦪ56Zi=2(Þ)Z=60,Z=100,ZÌ40,Z=20,Zé40,I∍235ᩚ1A,ni=900rpmᢥØÙãᔣ,oU+6,jḄᜧj,ᔣ஺6.ᙠØÙ+Évcdᔜ+Uᦪ56Z,=20,Zz=40,Z@=20,-30,ZÌ80஺obeA஺z7.ᙠØÙéê+Évcdᔜ+Uᦪ56Z”Z,Z2,Z3,Z@,oᐸbei“g28.ᙠØÙì+Évcdᔜ+Uᦪ56Z=15,Z2=25,Z2=20,%3=60@ím=200rpm,m=50rpm஺I:1(DmÄj,ᔣðñ@(2)mÄm,ᔣðò@oÉᩚHḄ,óḄᜧj,ᔣ஺9.ᙠØÙ+Évcdᔜ+Uᦪ56Z22,Z=88,Z3=Z5»obeiis஺310.ᙠØÙ+Évcd6Zi=20,Zz=34,Z@=18,ZS=36,=72,ZF26,Z!=20.obei“g

302./011.cdØÙ+ÉᔜU+ḄUᦪᑖø5Z22=25,Z=Z3=20,ZH=100,ZI=20,o+ÉḄbei”஺212.ᙠØÙḄù+ÉvcdᔜU+ḄUᦪᑖø5Z|ஹZ2ஹZ2,ஹZ3ஹZûஹLஹ%ஹஹᐭ,obeiI6஺13.ᙠØÙḄ+Év,cdᔜU+ḄUᦪᑖø5Zi=18ஹZ=20,Z'2=25,Z'3=2ýÞþஹZÌ40,ÿ
m=1002/ᑖAᔣ⌮┐4Ḅᐸᔣ஺14.Ḅ,
ᔜ#Ḅ#ᦪZl=20,Z2=40,Z'2=15,Z3=60,Z'3=18,Z4=18,Z7=20,#7Ḅ.ᦪm=3mm,∍ᩚᜮᦪ123∍#ᦪZ6=40»#156ᔣ᝞ᡠnl=100r/min,<#ᩩ8Ḅ>?@6Aᔣ஺15.
ᔜ#Ḅ#ᦪᑖBZi=20ஹZ=18.Z=56»D6EF஺23

31ᐸGH᪀1.J•ᓫ├NO᜜OH᪀
OQRSTU6Vᡠ◤X20s,ᜧ180°,ᐸḄ@6\6s஺Cbµ¶²¤uḄ³>Cms·஺<¸¹f᪝ᡠ§Ḅº»ªE0?½¾⚜©ªF"஺ᙠ⚜©ª/'ÁÂḄᩩuÃÄÅƶ²¤uXÁÇ◣f᪝ḄᨬᜧᔣTV¬₹Fmaxcde2.⚪2ᡠ¦ᙊÍÎÎᱏÐÑD=500mm,ᵨfrÓᐸᜳ©ᙠÔÕX஺
Îᱏ᜜ᙊḄTVÖªFtMOON,ÔÕ?ÎᱏXḄ᥅Ûᦪf=0.15,ÔÕḄÝᙳÐÑl0=150mm,ß☠ឋᦪKs=l.2,ᩞᧇḄäᵨ»åª[o]=60MPa஺<¸¹êᡠ◤ḄfëÐÑ஺ìkí⚪ᨵî¤ᔠ☢ÔÕḄÔ©ªñbf벤Ḅ⚜©ª஺3.⚪3ᡠ¦òóµHôᵨ4îõöf᪝²¤,ᡠ§᜜¬₹ᑖB÷ᔣ¬₹FR=5000N,ᔣ¬₹FQ=16OOONo
f᪝Ḅst³>Cb/Cb+Cm=0.25,¤ᔠ☢X᥅Ûᦪ,f=0.15,ß☠ឋᦪKs=1.2,f᪝ᩞᧇḄHûឋüB8.8üᨬýþÿ᩽▲஺min=640MPa,ᵨᐰᦪ[S]=2,᪝dlḄ#஺

32⚪2&⚪3&4.ᵯ()*+,-.ᵨὶ0ᘤὶ2345ᵯ()6᳛/MlkW,89᮱960r/min,ᵯ()᜜<0=>d=42mm,+,0Ḅ>?d,=38mm,⌱Aὶ0ᘤBCDCE஺0FὶG1.45H0IJᵨKLM2Nᳫ0P3Qᵨᙠ0IḄQᵨS?T=1300N,K0PḄᔣVWSᑖY?ᯠ1=1500N,=900N,B0PḄᑁ\0ᔣS?T]0.63^,_KL0PᡠaᑮḄ0ᔣc₹eDᓽ%=1500N,gR2=900N,B0PḄᑁ\0ᔣS?=0,63ὡ3_KL0PᡠaᑮḄ0ᔣc₹i1Di2

333.45H0IJᵨKLM2Nᳫ0P3Qᵨᙠ0IḄQᵨS?£=1300N,K0PḄᔣVWSᑖYᜐ=1500N,RR2=900N,B0PḄᑁ\0ᔣS?&=°43*3_KL0PᡠaᑮḄ0ᔣc₹FAIDF2AkஹQ&⚪m☢oᩚ)᪀1.᝞&tᔜvᩚ)᪀w3᪗yᜮ᪀{?|({3᪗}ᔜ)᪀ᙠ&t~eḄSMD(M3ᑨ)᪀ᨵi~஺

342.ᵨQ&}&t)᪀Ḅញ~ᜳM0.3.ᵨQ&}&t)᪀Ḅញ~ᜳM4.ᵨQ&}&t)᪀Ḅញ~ᜳM▲5.ᵨQ&}᤯ᩚᑗḄKL᩽▲~஺6.ᵨQ&}ᙽ஺ḄKL᩽▲~஺BAC

357.ᵨQ&}ᩚ'ḄKL᩽▲~஺8.}ᑡ)᪀&t~ḄSM஺

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375.ᵨQ&_}¢&t~8ᑮ8Å*2NeḄ8M஺¿ᙠ&I᪗}ᩭÃ஺6.ᵨQ&_}¢&t~8ᑮ6Å*2NeḄ8M0¿ᙠ&I᪗}ᩭÃ஺7.ᵨQ&_}¢&t~8Ê45°Ë)᪀ḄSM஺¿ᙠ&I᪗}ᩭÃ஺8.Ì¢({Ḅ£(¤¥?Í¢({«9Iᓣ3ᓣÎ?40ln,¹ÏÐÎM120°ÑÒÓ8Ê60°,m¢({±(38ÊᒕÕMÖe3¢({«¬9«9£(¤¥×Ø஺Ùᑴ¢({Ḅ~»ÄÂ஺Û(1.ᙠ&tᙊÝÞÛ(w3ß5|(Û1Ḅ8ᔣDÛḄàᔣ᝞&t஺᪗}2ஹ3ஹ4ÛÛḄàᔣ¿⌕_w.0ᡠa0ᔣSâÃ3ᙠ1ஹ2ÛãᔠᜐD3ஹ4ÛãᔠᜐᑖY᪗}2ÛD3Ûᡠa

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43

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