組合體的尺寸標注DimensioningCompositeSolids主講人：李帥教學目標Teachingobjectives1.了解基本立體的定形尺寸2.熟悉各類尺寸的含義3.掌握組合體的尺寸標注UnderstandthefixeddimensionsofbasicsolidsFamiliarwiththemeaningofvarioussizesMasteringtheDimensioningofCompositeBodies123目錄CONTENTS基本立體的尺寸標注尺寸的分類組合體的尺寸標注DimensioningofbasicsolidsClassificationofdimensionsDimensioningCompositeSolids4思考題Reflectionquestions1基本立體的尺寸標注DimensioningofbasicsolidsONE長long寬wid高high曲面立體curvedsolid高度height直徑diameter平面立體planebody2尺寸的分類ClassificationofdimensionsTWO完整的圖樣尺寸Completedrawingdimensions完整的圖樣尺寸Completedrawingdimensions結構尺寸structuresize相對位置尺寸Relativepositionsize尺寸的分類Classificationofdimensions定形尺寸sizedimension定位尺寸Positioningdimensions總體尺寸Overalldimensions確定機件各組成部分形狀和大小Determinetheshapeandsizeofeachcomponentofthemachine定形尺寸Shapingsize6six32thirty-two確定組合體各組成部分之間的相對位置關系Determinetherelativepositionalrelationshipbetweenthecomponentsofthecombination定位尺寸locationsize底面尺寸基準Dimensionreference對稱面重要端面Importantendface定位尺寸標注的起點Positionthestartingpointofthedimension長度方向尺寸基準Lengthdirectiondimensionreference長度方向寬度準Lengthdirectionandwidthaccuracy高度方向寬度準Heightdirectionandwidthaccuracy確定組合體長、寬、高最大外形尺寸Determinethemaximumexternaldimensionsofthecombinationbodyintermsoflength,width,andheight總體尺寸populationsize60sixty6six22twenty-two＋＋＋＋＋＋32thirty-two3組合體的尺寸標注DimensioningCompositeSolidsTHREE1one形體分析shapeanalysis圓筒cylinder底板floor支撐板Supportplate肋板Ribplate2two定型尺寸Fixedsize1one形體分析shapeanalysis肋板Ribplate支撐板Supportplate圓筒cylinder底板floorfourteentwenty-fourtwosixtwothirteensixthirty-sixsixtyforty-twotwenty-two3three定位尺寸Positioningdimensions2two1one定型尺寸Fixedsize形體分析shapeanalysis高度方向基準Heightdirectionreference32thirty-two長度方向基準Lengthdirectionreference48forty-eight寬度方向基準Widthdirectionreference16sixteenfourteentwosixtwothirteensixthirty-sixsixtyforty-twotwenty-twosix4four總體尺寸Overalldimensions3three定位尺寸Positioningdimensions2two1one定型尺寸Fixedsize形體分析shapeanalysis6322260總長Totallength總寬22總高Height不重復no-repeat不遺漏Noomission4思考題QuestionsTOUR12請思考如下問題Pleasethinkthefollowingquestions定形尺寸與定位尺寸各有什么作用?尺寸基準通常采用哪些線或者面表示?Whatarethefunctionso