中南大學(xué)工程制圖習(xí)題解答及期末復(fù)習(xí)要點課件

期末復(fù)習(xí)ReviewLesson考試時間：80分鐘一、點、線、面point,lineandplane二、正投影基本規(guī)律Orthographicprojectionprinciple主視圖thefrontview(Verticalprojection正面投影)俯視圖thetopview(Horizontalprojection水平投影)左視圖theleftsideview(Profileprojection側(cè)面投影)平面立體Polyhedron曲面立體Solidsofrevolution棱柱prism三、基本立體Basicgeometricsolids棱錐pyramid圓柱cylinder圓錐cone圓球sphereQuestionexample:PointAliesontheprism,givenitsverticalprojection,pleasefinditsanothertwoprojections.Locationofpointsonasolid棱柱－圓柱圓柱－圓柱五、相貫Intersectionofsurfacesofgeometricsolids交線形狀、位置；方孔重點是正貫（包括孔相貫）、方向、等徑相貫圓柱－圓錐輔助平面法，考的不多同軸回轉(zhuǎn)體相貫線為圓U形槽組合相貫平齊、不平齊aligned,nonaligned相切、相交Tangency,intersection六、組合體Compositesolids階梯孔steppedholes類似形analogousfigure形體分析法Theanalysisbytakingtheobjectapart線面分析法Theanalysisonlinesandsurfaces尺寸標(biāo)注Dimensioning視圖views全剖視圖Fullsectionalview七、機件表達(dá)方法RepresentationofParts

基本視圖、向視圖、局部視圖、斜視圖外簡內(nèi)繁半剖視圖Halfsectionalview內(nèi)外均需表達(dá)的對稱機件局部視圖Localsectionalview內(nèi)外均需表達(dá)的不對稱機件其他剖視方法斷面Cross-section階梯剖offsetsection、旋轉(zhuǎn)剖alignedsection、斜剖inclinedsection、復(fù)合剖compoundsection綜合表達(dá)Comprehensiverepresentationofapart移出斷面、重合斷面注意：剖面線、波浪線、標(biāo)注、虛線外螺紋畫法Representationofexternalthread內(nèi)螺紋畫法Representationofinternalthread五、標(biāo)準(zhǔn)件Standardparts內(nèi)外螺紋的連接畫法Representationofmatingthreads螺栓連接的畫法Representationofboltjoints螺柱連接的畫法Representationofstudjoints螺釘連接的畫法Representationofscrewjoints8.Changethefrontviewtoafullsectionalview.Questionexamples:

7.Visualizetheshapeofthepartaccordingtotheviewsgivenbelow.Representthepartbyusingsuitablerepresentation.9.Makeafullsectionintheleftsideview,pleasedrawthe(A-A)leftsidefullsectionalview.10.Representthepartbyusingsuita