《装配图的表达方法》ppt课件

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1、RepresentationMethodsofAssemblyDrawings装配图的表达方法Generalrepresentation一般表达方法Conventionalrepresentation规定画法Specialrepresentation特殊画法Simplifiedrepresentation简化画法请点击相应标题显示其内容Generalrepresentation一般表达方法Alltheabove-mentionedrepresentationsareappliedtotheassemblydrawing,i

2、ncludingviews,sectionalviews,cuts,andsimplifiedrepresentations.前面所介绍的各种表达方法均适用于装配图，包括：视图、剖视、断面、简化画法等。请点击鼠标左键显示后面内容Conventionalrepresentation规定画法Ifthescrewedfasteningpieceandsolidpiecearelongitudinallysectionedandthecutplanegoesthroughthecenterofsymmetry,theseparts

3、arerepresentedasthoughtheywerenotsectioned.对于螺纹紧固件及实心件若按纵向剖切且剖切平面通过其对称中心时，这些零件按不剖画出。Sectionlinesintwocontiguousmetalpartsmustbeinoppositedirectionsorunequallyspaced,whilesectionlinesofthesamepartmustbeconsistentindifferentviews.两个相邻金属零件的剖面线应方向相反或间距不同，而同一零件的剖面线在各个视

4、图中应保持一致。2.Representingcontactsurfacesandfittingsurfacesoftwoparts.零件接触面与配合面的画法1.Representingsectionlines剖面线的画法3.Representingfasteningpiecesandsolidpieces紧固件及实心件画法Thecontactsurfaceorfittingsurfaceoftwopartsisrepresentedasaline,whilethenon-contactsurfaceornon-fittin

5、gsurfaceisrepresentedastwolinesevensmallclearance.两个零件的接触面或配合表面只画一条线，而非接触面或配合表面之间有间隙处应画成两条线。请点击鼠标左键显示后面内容Ifthestructureofacertainpartisnotclearlyrepresentedandwillthusaffecttheunderstandingofitsfittingrelationshipandfunction,thepartmustbedrawnseparatelyandmarkedwi

6、th“xxdirection”nearthecorrespondingviewindicatingwitharrowsandcapitalletterstheprojectiondirection.当某个零件的结构未表达清楚，且对理解配置关系或部件功能有影响时,应单独画出该零件,并在其上方注明“零件××”,在相应视图附近用箭头指明投射方向,并注明相应的大写字母。Torepresenttheinternaldetailsofamachineorassembly,wecanrepresentsomepartsasacutawa

7、ydrawingalongthefittingsurface.Inthisrepresentation,thesectionlinesofthefittingsurfacearenotneeded,butthesectionlinesofpartsthatpassthroughthefittingsurfaceareneeded.为了表达机器或部件的内部结构，可采用沿某些零件的结合面剖切的画法，其特点是在结合面上不画剖面线，但穿过该结合面的其他零件，应按剖视画。2.Singlepiecerepresentation单件画法

8、1.Cuttingawayalongfittingsurfacerepresentation沿结合面剖切Specialrepresentation特殊画法请点击鼠标左键显示后面内容请点击鼠标左键显示后面内容3.Dismountingrepresentation拆卸画法Ifthefittingrelati