《装配图的标注》PPT课件

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1、DimensioningandSpecificationsforAssemblyDrawings装配图的标注Dimensioning尺寸标注Numbering序号标注Itemblock明细栏Technicalrequirements技术要求请点击相应标题显示其内容Dimensioning尺寸标注2.Externaldimensions外形尺寸1.Characteristicandspecificationdimensions特性尺寸请点击鼠标左键显示后面内容Thedimensionsthatrepresentmachine

2、specificationsorservicebehaviorsarethefoundationonwhichuserschoosetherightproducts,suchastraveldistances,calibersandthreads.表示机器规格或工作性能的尺寸,是用户选用产品的依据。如:行程、口径及螺纹等。Thedimensionsthatrepresentthegenerallength,width,andheightareusefulforpacking,distributionandtransport

3、ation.表示机器长、宽、高的总体尺寸，供装箱、存储和运输时参考。Dimensioning尺寸标注1)Thedistancefromthemainaxialcordtothedatumclampface.主要轴线到安装基准面的距离。2)Thedistancebetweenthemainparallelshafts.主要平行轴之间的距离。3)Thefittingrelationshipthatmustbekeptaftermounting.装配后两零件之间必须保证的配合关系等。3.Fittingdimensions装配尺寸

4、请点击鼠标左键显示后面内容Thatrepresentthetolerancebetweenpartsorsubassembliesthathavethefollowingcharacteristics.表示零、部件间有配合性能要求的配合尺寸及公差等。Dimensioning尺寸标注4.Mountingdimensions安装尺寸5.Otherdimensions其他尺寸请点击鼠标左键显示后面内容Thatrepresentthedimensionsrequiredtomountthemachineorsubassemblyt

5、oitsbaseortoanothermachine.表示机器或部件安装在基底或其他机器上所需的尺寸。Thatincludeimportantdimensionsofmajorpartsandlimiteddimensionsofmovingparts.主体零件的重要尺寸及运动零件的极限尺寸等。1)Allpartsandsubassembliesintheassemblydrawingmustbenumbered.装配图中的所有零、部件都必须编写序号。2)Thesamepartinthesameassemblydrawin

6、gshallusethesamenumberandbemarkedonlyonce.同一装配图中相同的零件应编写同一个序号，只注一次。3)Thepartnumberintheassemblydrawingshallcoincidewiththatintheitemblock.Oneshouldfirstmarkthenumberonthedrawingtoensurethenumbersequenceisinorderandthenfillintheitemblock.装配图中的零件序号应与明细栏中的序号一致。为确保零件序

7、号顺序排列，应先在图上编写序号，然后再填写明细栏。4)Thenumbershallbearrangedclockwiseorcounterclockwiseinthefrontviewalongthehorizontalorverticaldirections.Ifthenumbercannotbesequencedcontinuallyonthedrawing,onecanarrangetheminorderalongthehorizontalorverticaldirections.序号应按顺时针或逆时针方向排列整齐,

8、若在整个图上无法连续时可只在水平或垂直方向顺次排列。1.Generalspecification一般规定Numbering序号标注1)Partnumbersshallbemarkedonthehorizontallineorinsideornearthecircleoftheleader.Thefont