Upload File

engineering drawings lecture linear geometric tolerancing.pdf

  • Home
  • Documents
  • Engineering Drawings Lecture Linear Geometric Tolerancing.pdf
22
Engineering Drawings: Geometric Tolerancing A short series of lectures on Engineering Drawing as Part of MECH2400 5400: Mechanical Design 1 By Paul Briozzo

Upload: ijabi

Post on 26-Nov-2015

47 views

Category:

Documents


0 download

Report

TRANSCRIPT

  • EngineeringDrawings:GeometricTolerancing

    AshortseriesoflecturesonEngineeringDrawingasPartofMECH24005400:MechanicalDesign1ByPaulBriozzo

  • DistortedObjectsbySuzyLelievre

    ScaleTransformSALOMEGeometryUsersGuide:ScaleTransform

    GeometricTolerancing

  • GeometricTolerancingWhatisit?

  • GeometricTolerancing UnlikeDimensionalTolerancethatconcernsitselfwithsizecontrol,

    GeometricTolerancing concernsitselfwithshapecontrol

    GeometricTolerancing influencesthemanufacturingandinspectionprocesschosen

    GeometricTolerancing isrequiredinfeaturesinindustriessuchas Aerospacecomponentmanufacture Automobilecomponentmanufacture Precisionmachinerymanufacture Biomedicalcomponentmanufacture

    GeometricTolerancing isusedwherehighinterchangeofpartsisrequired

    GeometricTolerancing andDimensionalTolerancing arelinked

  • BasicConceptsofGeometryTolerancing

    GeometryTolerancesarespecifiedaccordingtofunctionalrequirements:Useitifitisneeded,ifnotDONOTasitaddstotheexpenseofthemanufacture,inspectionofacomponentandclarityofanengineeringdrawing.

    Dependingonthefeaturetobetoleranced andthewayinwhichitisdimensioned,thetolerancezonewillbeoneof: Thespacebetweentwoparallellines Thespacewithinacircle Thespacebetweentwoconcentriccircles Thespacewithinacylinder Thespacebetweentwocoaxialcylinders Thespacebetweentwoequidistantsurfaces Thespacewithinasphere

  • GeometryTolerancing SymbolicStructure

  • InterpretationofGeometryTolerancingFlatness

    AFlatnesstoleranceisusedtocontroltheflatnessofasurface.Thetolerancezoneisaspecifiedspaceseparatingtwoparallelplanesbetweenwhichthesurfacetobecontrolledmustlie.

  • Straightness Astraightnesstolerancemaybeusedtocontrol:

    1.Straightnessofaline 2.Straightnessofanaxisinasingleplane 3.Straightnessoftheaxesofsolidsofrevolution

  • Perpendicularity Aperpendicularity toleranceisusedtocontrol:

    1.alinewithrespecttoadatumline 2.anaxiswithrespecttoadatumplane

  • 3.asurfacewithrespecttoadatumaxis 4.asurfacewithrespecttoadatumplane

  • Position Apositiontoleranceisusedtocontrolthelocationofafeatureby

    limitingitsdeviationfromaspecifiedtrueposition. 1.aholeaxis 2.asurface

  • Position(Concentricity) Aconcentricitytoleranceisusedtocontrolaconditioninwhich

    twoormorefeaturessuchascircles,spherescylinders,conesorhexagonsarerequiredtoshareacommoncentreoraxis

  • CaseStudy QantasA380OilStubPipeLatein2010,aQantasA380sufferedacatastrophicfailureofoneofitsfourmainRollsRoyceengines.Investigationspointtoafailureinanoilstubpipecausedbyamanufacturingdefect.

  • Position(Symmetry) Asymmetrytoleranceisusedtocontrolaconditioninwhichoneormore

    featuresaresymmetricallydisposedeithersideofacentreline(axis)orcentreplane(median)ofanotherfeaturewhichisspecifiedasthedatum.

  • Cylindricity Acylindricity tolerancespecifiesatolerancezoneconsistingofanannularspacebetween

    twocoaxialcylindershavingadifferenceinradiiequaltothespecifiedtolerance.

  • Angularity Anangularitytoleranceisusedtocontrolangularrelationshipsofanyanglebetween

    straightline(axes)orsurfaceswithstraightlineelementssuchasflatorcylindricalsurfaces

  • Circularity Acircularitytolerancespecifiesthewidthofanannulartolerancezone,boundedbytwo

    concentriccirclesinthesameplanewithinwhichthecircumferenceofthefeaturemustlie.

  • Parallelism Aparallelismtoleranceisusedtocontroltheorientationoffeaturesrelatedtooneanother

    byanangleofzerodegrees.

  • Example(ABadOne)

  • EffectsofCombiningLinearandGeometricTolerances

    Intolerancing featuresofsizeonmatingcomponentswhereeaseofassemblyisimportant,itshouldberealisedthattheleastfavourableconditionforassemblyoccurswhenmatingsizesarethemaximummaterialsizeallowablebytheindividualtoleranceofeachcomponent.

    Greatervariationsinshapegeometrycanbeacceptedasthematingsizesapproachtheirleastmaterialsize.

  • VirtualSize Virtualsizereferstothedimensionoftheoverallenvelopeofperfectformwhichtouchesthe

    highestpointsofafeature.

    Forashaft,itisthemaximummeasuredsizeplustheactualeffectofformvariationssuchasflatness,straightness,roundness,cylindricity andprofile.

    Forahole,itistheminimummeasuredsizeminustheactualeffectofformvariationssuchasflatness,straightness,roundness,cylindricity andprofile.

  • InterpretthisExampleofGeometricTolerancing


Bearings Working with Scales Scaled Drawings Scaled Drawings Making Simple Scale Drawings Harder Scale Drawings Compass Points

ARCHITECTURAL AND TECHNICAL DRAWINGS · published architectural and technical drawings, either conceptual drawings (e.g., sketches), renderings, working drawings, or detail drawings,

IS 13099 1991 ISO 5458 1987 Technical Drawings - Geometrical Tolerancing Positional Tolerancing.pdf

Agnes Denes - Ludwig Múzeumwrought drawings, in which the static rigour of geometric forms and mathematics is made ethereal with a poetic and sensual approach. The triangle as a geometric

Civil Drawings Bridge Drawings - wicklow.ie

Geometric Sequence and Geometric Mean

Technical drawings — Construction drawings— General

PICTORIAL DRAWINGS. Topic / Objectives: Pictorial Drawings Identify types of pictorial drawings. Centering isometric, cavalier, & cabinet drawings. Sketch

On Tolerancing and Metrology of Geometric (Solid) Models Translation Errors - Vadim Shapiro at U of W.pdf · Tolerancing & metrology: ... notes 1930s- Tolerances mentioned on drawings

VLASTNOSTI PLYNNÉHO A KAPALNÉHO KYSLÍKU … · iso 1101 (al 4) technical drawings – geometric tolerancing – tolerancing of form, orientation, location and run – out generalities,

4 Geometric Terms and Construction Permission granted to reproduce for educational use only. Define terms related to the geometry of industrial drawings

Woodland Park Mathematics Curriculum Mathematics ...€¦ · 3. Solving problems involving scale drawings and informal geometric constructions, and working with two- and three-dimensional

 · as Sketches Preliminary Design - Avant Project Final Preliminary Design License Drawings Tender Drawings Workin g Drawings Workshop Drawings As Built Drawings

Geometric modeling111431635 geometric-modeling-glad (1)

GEOMETRICAL DIMENSIONING AND TOLERENCE 1. Geometric dimensioning and tolerancing is an international language used on drawings to accurately describe

Geometric Symbols Geometric Symbols Geometric Dimensions and Tolerances

Defining Success For Bigger or Smaller In this lesson we will: NxG M.7.G.1 - Solve problems involving scale drawings of geometric figures, including:

1200 CONTRACTS AND DRAWINGS CHAPTER TABLE … · BC MoT SUPPLEMENT TO TAC GEOMETRIC DESIGN GUIDE MoT Section 1200 TAC Section Not Applicable July 2011 1200 CONTRACTS AND DRAWINGS

Forge - DevCon 2016: Drawings! Drawings! Everywhere!

Sequential Design of Optimum Sized and Geometric Tolerances · 2018-09-25 · Sequential Design of Optimum Sized and Geometric Tolerances 607 Though simple 2D drawings were concer

Welding Drawings. WELDING DRAWINGS WELD TERMINOLOGY

Scale Drawings Today you will learn to: identify similar figures solve problems involving scale drawings of geometric figures, including finding length

STANDARD DRAWINGS WATER STANDARD DRAWINGS Title …

Draw each geometric figure. Check students’ drawings. 1… 8... · 8-1 Name Date Draw each geometric figure. 4. ... Check students’ drawings. ... you see between the clock hands

DESIGN DRAWINGS VENDOR DRAWINGS

ENGINEERING DRAWINGS & GEOMETRIC · PDF file... - The symbols are divided into five categories: form ... Geometric Dimensioning and Tolerancing (GD&T) ... a surface can have relative

CLOSER LOOK: LANDSCAPE ARCHITECTURE STUDENT …sketches: black and white format sketches: gray-scale marker sketches: water color. auto-cad drawings: geometric polyhedron auto-cad

Commercial Drawings - PHCC Of Georgia - …plumbingpros.com/pdf/commercialdraw.pdf · Commercial Drawings The Different Drawing Groups C-drawings A-drawings S-drawings M-drawings

Geometric Dimensioning and Tolerancing GD&T. What is GD & T? Geometric dimensioning and tolerancing is an international language used on drawings to

Working Drawings (Production Drawings)

Table of Contents · Web viewThrough proper dimensioning and geometric tolerancing of the drawings, students identify production control monitoring strategies. The completed design

MEASURED DRAWINGS: Project 3 - Measured Drawings

(21).pdf · According to the CEN/CENELEC Internal ... ISO 1101, Technical drawings — Geometric tolerancing — Tolerancing of form, orientation, location and run-out —

Geometric Dimensioning and Tolerancing - IVCC Spring 2010t.pdf · Geometric Dimensioning and Tolerancing (GD&T) is an international language that is used on engineering drawings to

Geometric Geometric Art Zendala Zendala Geometric Zendala