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`http://nileshshah.tk/ Shah, NileshDimensioning and TolerancingperASME Y14.5M-1994visit http://nileshshah.tk/http://nileshshah.tk/Tolerances of FormStraightness (ASME Y14.5M-1994, 6.4.1)Flatness (ASME Y14.5M-1994, 6.4.2)Circularity (ASME Y14.5M-1994, 6.4.3)Cylindricity (ASME Y14.5M-1994, 6.4.4)http://nileshshah.tk/Straightness(Flat Surfaces)0.5 0.125 +/-0.250.1 Tolerance 0.5 ToleranceStraightness is the condition where an element of a surface or an axis is a straight linehttp://nileshshah.tk/Straightness(Flat Surfaces)0.5 Tolerance Zone25.25 max 24.75 min0.1 Tolerance ZoneIn this example each line element of the surface must lie within a tolerance zone defined by two parallel lines separated by the specified tolerance value applied to each view. All points on the surface must lie within the limits of size and the applicable straightness limit.The straightness tolerance is applied in the view where the elements to be controlled are represented by a straight linehttp://nileshshah.tk/Straightness(Surface Elements)0.10.1 Tolerance Zone MMC0.1 Tolerance Zone MMC0.1 Tolerance Zone MMCIn this example each longitudinal element of the surface must lie within a tolerance zone defined by two parallel lines separated by the specified tolerance value. The feature must be within the limits of size and the boundary of perfect form at MMC. Any barreling or waisting of the feature must not exceed the size limits of the feature.http://nileshshah.tk/Straightness (RFS)0.10.1 Diameter Tolerance Zone MMCOuter Boundary (Max)Outer Boundary = Actual Feature Size + Straightness ToleranceIn this example the derived median line of the feature's actual local size must lie within a tolerance zone defined by a cylinder whose diameter is equal to the specified tolerance value regardless of the feature size. Each circular element of the feature must be within the specified limits of size. However, the boundary of perfect form at MMC can be violated up to the maximum outer boundary or virtual condition diameter.http://nileshshah.tk/Straightness (MMC)15 14.85 0.1M15 (MMC)0.1 Diameter Tolerance Zone15.1 Virtual Condition 14.85 (LMC) 0.25 Diameter Tolerance Zone15.1 Virtual ConditionVirtual Condition = MMC Feature Size + Straightness ToleranceIn this example the derived median line of the feature's actual local size must lie within a tolerance zone defined by a cylinder whose diameter is equal to the specified tolerance value at MMC. As each circular element of the feature departs from MMC, the diameter of the tolerance cylinder is allowed to increase by an amount equal to the departure from the local MMC size. Each circular element of the feature must be within the specified limits of size. However, the boundary of perfect form at MMC can be violated up to the virtual condition diameter.http://nileshshah.tk/Flatness0.125 +/-0.250.1 Tolerance Zone 0.1 Tolerance Zone24.75 min25.25 maxIn this example the entire surface must lie within a tolerance zone defined by two parallel planes separated by the specified tolerance value. All points on the surface must lie within the limits of size and the flatness limit.Flatness is the condition of a surface having all elements in one plane. Flatness must fall within the limits of size. The flatness tolerance must be less than the size tolerance.http://nileshshah.tk/Circularity(Roundness)0.190 0.1 900.1 Wide Tolerance ZoneIn this example each circular element of the surface must lie within a tolerance zone defined by two concentric circles separated by the specified tolerance value. All points on the surface must lie within the limits of size and the circularity limit.Circularity is the condition of a surface where all points of the surface intersected by any plane perpendicular to a common axis are equidistant from that axis. The circularity tolerance must be less than the size tolerancehttp://nileshshah.tk/Cylindricity0.10.1 Tolerance ZoneMMCIn this example the entire surface must lie within a tolerance zone defined by two concentric cylinders separated by the specified tolerance value. All points on the surface must lie within the limits of size and the cylindricity limit.Cylindricity is the condition of a surface of revolution in which all points are equidistant from a common axis. Cylindricity is a composite control of form which includes circularity (roundness), straightness, and taper of a cylindrical feature.http://nileshshah.tk/Form Control QuizQuestions #1-5 Fill in blanks (choose from below)1. The four form controls are ____________, ________, ___________, and ____________. 2. Rule #1 states that unless otherwise specified a feature of size must have ____________at MMC. 3. ____________ and ___________ are individual line or circularelement (2-D) controls.4. ________ and ____________are surface (3-D) controls. 5. Circularity can be applied to both ________and _______ cylindricalparts.straightness straight perfect formcylindricity angularity flatness tapered profile circularity true positionAnswer questions #6-10 True or False6. Form controls require a datum reference. 7. Form controls do not directly control a feature's size. 8. A feature's form tolerance must be less than it's sizetolerance.9. Flatness controls the orientation of a feature. 10. Size limits implicitly control a feature's form.http://nileshshah.tk/Tolerances of OrientationAngularity (ASME Y14.5M-1994 ,6.6.2)Perpendicularity (ASME Y14.5M-1994 ,6.6.4)Parallelism (ASME Y14.5M-1994 ,6.6.3)http://nileshshah.tk/Angularity0.3 A 30o(Feature Surface to Datum Surface)20 +/-0.5A19.5 min 20.5 max30o30oA0.3 Wide Tolerance ZoneA0.3 Wide Tolerance ZoneThe tolerance zone in this example is defined by two parallel planes oriented at the specified angle to the datum reference plane.Angularity is the condition of the planar feature surface at a specified angle (other than 90 degrees) to the datum reference plane, within the specified tolerance zone.http://nileshshah.tk/Angularity(Feature Axis to Datum Surface)NOTE: Tolerance applies to feature at RFS0.3 A0.3 Circular Tolerance Zone0.3 Circular Tolerance Zone60oAThe tolerance zone in this example is defined by a cylinder equal to the length of the feature, oriented at the specified angle to the datum reference plane.AAngularity is the condition of the feature axis at a specified angle (other than 90 degrees) to the datum reference plane, within the specified tolerance zone.http://nileshshah.tk/Angularity(Feature Axis to Datum Axis)NOTE: Feature axis must lie within tolerance zone cylinder0.3 ANOTE: Tolerance applies to feature at RFSA0.3 Circular Tolerance Zone 45 o0.3 Circular Tolerance ZoneDatum Axis AThe tolerance zone in this example is defined by a cylinder equal to the length of the feature, oriented at the specified angle to the datum reference axis.Angularity is the condition of the feature axis at a specified angle (other than 90 degrees) to the datum reference axis, within the specified tolerance zone.http://nileshshah.tk/Perpendicularity0.3 A(Feature Surface to Datum Surface)A0.3 Wide Tolerance Zone 0.3 Wide Tolerance ZoneAThe tolerance zone in this example is defined by two parallel planes oriented perpendicular to the datum reference plane.APerpendicularity is the condition of the planar feature surface at a right angle to the datum reference plane, within the specified tolerance zone.http://nileshshah.tk/Perpendicularity0.3 Diameter Tolerance Zone(Feature Axis to Datum Surface)NOTE: Tolerance applies to feature at RFS0.3 Circular Tolerance ZoneC0.3 Circular Tolerance Zone 0.3 CThe tolerance zone in this example is defined by a cylinder equal to the length of the feature, oriented perpendicular to the datum reference plane.Perpendicularity is the condition of the feature axis at a right angle to the datum reference plane, within the specified tolerance zone.http://nileshshah.tk/Perpendicularity(Feature Axis to Datum Axis)NOTE: Tolerance applies to feature at RFS0.3 AA0.3 Wide Tolerance ZoneDatum Axis AThe tolerance zone in this example is defined by two parallel planes oriented perpendicular to the datum reference axis.Perpendicularity is the condition of the feature axis at a right angle to the datum reference axis, within the specified tolerance zone.http://nileshshah.tk/Parallelism0.3 A(Feature Surface to Datum Surface)25 +/-0.5A0.3 Wide Tolerance Zone 0.3 Wide Tolerance Zone25.5 max24.5 minAThe tolerance zone in this example is defined by two parallel planes oriented parallel to the datum reference plane.AParallelism is the condition of the planar feature surface equidistant at all points from the datum reference plane, within the specified tolerance zone.http://nileshshah.tk/ParallelismNOTE: The specified tolerance does not apply to the orientation of the feature axis in this direction(Feature Axis to Datum Surface)NOTE: Tolerance applies to feature at RFS0.3 A0.3 Wide Tolerance ZoneAThe tolerance zone in this example is defined by two parallel planes oriented parallel to the datum reference plane.AParallelism is the condition of the feature axis equidistant along its length from the datum reference plane, within the specified tolerance zone.http://nileshshah.tk/Parallelism0.3 Circular Tolerance Zone(Feature Axis to Datum Surfaces)BNOTE: Tolerance applies to feature at RFS0.3 Circular Tolerance Zone 0.3 A B 0.3 Circular Tolerance ZoneBAThe tolerance zone in this example is defined by a cylinder equal to the length of the feature, oriented parallel to the datum reference planes.AParallelism is the condition of the feature axis equidistant along its length from the two datum reference planes, within the specified tolerance zone.http://nileshshah.tk/Parallelism(Feature Axis to Datum Axis)The tolerance zone in this example is defined by a cylinder equal to the length of the feature, oriented parallel to the datum reference axis. NOTE: Tolerance applies to feature at RFS0.1 Circular Tolerance Zone 0.1 AA0.1 Circular Tolerance ZoneDatum Axis AParallelism is the condition of the feature axis equidistant along its length from the datum reference axis, within the specified tolerance zone.http://nileshshah.tk/Orientation Control QuizQuestions #1-5 Fill in blanks (choose from below)1. The three orientation controls are __________, ___________, and ________________. 2. A _______________ is always required when applying any ofthe orientation controls.3. ________________ is the appropriate geometric tolerance whencontrolling the orientation of a feature at right angles to a datum reference.4. Mathematically all three orientation tolerances are _________. 5. Orientation tolerances do not control the ________ of a feature. perpendicularity datum feature angularity datum target location identical datum reference parallelism profileAnswer questions #6-10 True or False6. Orientation tolerances indirectly control a feature's form. 7. Orientation tolerance zones can be cylindrical. 8. To apply a perpendicularity tolerance the desired anglemust be indicated as a basic dimension.9. Parallelism tolerances do not apply to features of size. 10. To apply an angularity tolerance the desired angle mustbe indicated as a basic dimension.http://nileshshah.tk/Tolerances of ProfileProfile of a Line (ASME Y14.5M-1994, 6.5.2b)Profile of a Surface (ASME Y14.5M-1994, 6.5.2a)http://nileshshah.tk/Profile of a Line20 X 20 A1 B 20 X 20 A3 20 X 20 A2C1 A B C17 +/- 1A2 Wide Size Tolerance Zone 18 Max 16 Min.1 Wide Profile Tolerance ZoneThe profile tolerance zone in this example is defined by two parallel lines oriented with respect to the datum reference frame. The profile tolerance zone is free to float within the larger size tolerance and applies only to the form and orientation of any individual line element along the entire surface. Profile of a Line is a two-dimensional tolerance that can be applied to a part feature in situations where the control of the entire feature surface as a single entity is not required or desired. The tolerance applies to the line element of the surface at each individual cross section indicated on the drawing.http://nileshshah.tk/Profile of a Surface20 X 20 A1 B 20 X 20 A3 20 X 20 A2C2 A B C23.5A2 Wide Tolerance Zone Size, Form and Orientation Nominal Location23.5The profile tolerance zone in this example is defined by two parallel planes oriented with respect to the datum reference frame. The profile tolerance zone is located and aligned in a way that enables the part surface to vary equally about the true profile of the feature.Profile of a Surface is a three-dimensional tolerance that can be applied to a part feature in situations where the control of the entire feature surface as a single entity is desired. The tolerance applies to the entire surface and can be used to control size, location, form and/or orientation of a feature surface.http://nileshshah.tk/Profile of a Surface(Bilateral Tolerance)20 X 20 A1 B 20 X 20 A3 20 X 20 A21 A B CC 501 Wide Total Tolerance ZoneB0.5 Inboard 0.5 Outboard 50CNominal LocationThe tolerance zone in this example is defined by two parallel planes oriented with respect to the datum reference frame. The profile tolerance zone is located and aligned in a way that enables the part surface to vary equally about the true profile of the trim. Profile of a Surface when applied to trim edges of sheet metal parts will control the location, form and orientation of the entire trimmed surface. When a bilateral value is specified, the tolerance zone allows the trim edge variation and/or locational error to be on both sides of the true profile. The tolerance applies to the entire edge surface.http://nileshshah.tk/Profile of a Surface(Unilateral Tolerance)20 X 20 A1 B 20 X 20 A3 20 X 20 A20.5 A B CC 500.5 Wide Total Tolerance ZoneBC50Nominal LocationThe tolerance zone in this example is defined by two parallel planes oriented with respect to the datum reference frame. The profile tolerance zone is located and aligned in a way that allows the trim surface to vary from the true profile only in the inboard direction. Profile of a Surface when applied to trim edges of sheet metal parts will control the location, form and orientation of the entire trimmed surface. When a unilateral value is specified, the tolerance zone limits the trim edge variation and/or locational error to one side of the true profile. The tolerance applies to the entire edge surface.http://nileshshah.tk/Profile of a Surface(Unequal Bilateral Tolerance)20 X 20 A1 B 20 X 20 A3 20 X 20 A20.5 1.2 A B CC 501.2 Wide Total Tolerance ZoneB0.5 Inboard 0.7 Outboard 50CNominal LocationThe tolerance zone in this example is defined by two parallel planes oriented with respect to the datum reference frame. The profile tolerance zone is located and aligned in a way that enables the part surface to vary from the true profile more in one direction (outboard) than in the other (inboard). Profile of a Surface when applied to trim edges of sheet metal parts will control the location, form and orientation of the entire trimmed surface. Typically when unequal values are specified, the tolerance zone will represent the actual measured trim edge variation and/or locational error. The tolerance applies to the entire edge surface.http://nileshshah.tk/Profile of a Surface0.5 A 0.1 25Location &amp; Orientation Form OnlyA 0.1 Wide Tolerance Zone 25.2524.75AComposite Profile of Two Coplanar Surfaces w/o Orientation Refinementhttp://nileshshah.tk/Profile of a Surface0.5 A 0.1 A 25 Location Form &amp; OrientationA 0.1 Wide Tolerance Zone 25.25A 24.750.1 Wide Tolerance ZoneAComposite Profile of Two Coplanar Surfaces With Orientation Refinementhttp://nileshshah.tk/Profile Control QuizAnswer questions #1-13 True or False1. Profile tolerances always require a datum reference. 2. Profile of a surface tolerance is a 2-dimensional control. 3. Profile of a surface tolerance should be used to controltrim edges on sheet metal parts.4. Profile of a line tolerances should be applied at MMC. 5. Profile tolerances can be applied to features of size. 6. Profile tolerances can be combined with other geometriccontrols such as flatness to control a feature.7. Profile of a line tolerances apply to an entire surface. 8. Profile of a line controls apply to individual line elements. 9. Profile tolerances only control the location of a surface. 10. Composite profile controls should be avoided becausethey are more restrictive and very difficult to check.11. Profile tolerances can be applied either bilateral orunilateral to a feature.12. Profile tolerances can be applied in both freestate andrestrained datum conditions.13. Tolerances shown in the lower segment of a compositeprofile feature control frame control the location of a feature to the specified datums.http://nileshshah.tk/Profile Control QuizQuestions #1-9 Fill in blanks (choose from below)1. The two types of profile tolerances are _________________, and ____________________. 2. Profile tolerances can be used to control the ________, ____, ___________ , and sometimes size of a feature. 3. Profile tolerances can be applied _________ or __________. 4. _________________ tolerances are 2-dimensional controls. 5. ____________________ tolerances are 3-dimensional controls. 6. _________________ can be used when different tolerances arerequired for location and form and/or orientation.7. When using profile tolerances to control the location and/or orientation of a feature, a _______________ must be includedin the feature control frame.8. When using profile tolerances to control form only, a ______ __________ is not required in the feature control frame. 9. In composite profile applications, the tolerance shown in the upper segment of the feature control frame applies only to the ________ ofthe feature.composite profile bilateral virtual condition profile of a surface primary datum orientation datum reference unilateral profile of a line location true geometric counterpart formhttp://nileshshah.tk/Tolerances of LocationTrue Position (ASME Y14.5M-1994, 5.2)Concentricity (ASME Y14.5M-1994, 5.12)Symmetry (ASME Y14.5M-1994, 5.13)http://nileshshah.tk/Noteshttp://nileshshah.tk/Coordinate vs Geometric Tolerancing Methods8.5 +/- 0.1 Rectangular Tolerance Zone 10.25 +/- 0.5 B 8.5 +/- 0.1 1.4 A B C Circular Tolerance Zone 10.2510.25 +/- 0.510.25CACoordinate Dimensioning+/- 0.5Geometric Dimensioning1.4 +/- 0.5Rectangular Tolerance ZoneCircular Tolerance Zone57% Larger Tolerance ZoneCircular Tolerance ZoneRectangular Tolerance ZoneIncreased Effective Tolerancehttp://nileshshah.tk/Positional Tolerance Verification(Applies when a circular tolerance is indicated)XZFeature axis actual location (measured)Positional tolerance zone cylinder Actual feature boundaryYFeature axis true position (designed)Formula to determine the actual radial position of a feature using measured coordinate values (RFS) Z= Z X2 + Y2 positional tolerance /2Z = total radial deviation X2 = &quot;X&quot; measured deviation Y2 = &quot;Y&quot; measured deviationhttp://nileshshah.tk/Positional Tolerance Verification(Applies when a circular tolerance is indicated)XZFeature axis actual location (measured)Positional tolerance zone cylinder Actual feature boundaryYFeature axis true position (designed)Formula to determine the actual radial position of a feature using measured coordinate values (MMC) X2 + Y2 Z = +( actual - MMC) Z 2 = positional tolerance Z = total radial deviation X2 = &quot;X&quot; measured deviation Y2 = &quot;Y&quot; measured deviationhttp://nileshshah.tk/Bi-directional True PositionRectangular Coordinate Method2X1.5 A B C2X0.5 A B CCA10 10 35BAs Shown on Drawing2X6 +/-0.25Means This:1.5 Wide Tolerance Zone True Position Related to Datum Reference FrameC10 10 35B0.5 Wide Tolerance ZoneEach axis must lie within the 1.5 X 0.5 rectangular tolerance zone basically located to the datum reference framehttp://nileshshah.tk/Bi-directional True PositionMultiple Single-Segment Method2X 6 +/-0.251.5 A B C 0.5 A BCA10 10 35BAs Shown on DrawingMeans This:1.5 Wide Tolerance Zone True Position Related to Datum Reference FrameC10 10 35B0.5 Wide Tolerance ZoneEach axis must lie within the 1.5 X 0.5 rectangular tolerance zone basically located to the datum reference framehttp://nileshshah.tk/Bi-directional True Position2X 13 +/-0.25 1.5 M A B C BOUNDARY 2X 6 +/-0.25 0.5 M A B C BOUNDARYNoncylndrical Features (Boundary Concept)CA10 10 35BAs Shown on DrawingMeans This:Both holes must be within the size limits and no portion of their surfaces may lie within the area described by the 11.25 x 5.25 maximum boundaries when the part is positioned with respect to the datum reference frame. The boundary concept can only be applied on an MMC basis.True position boundary related to datum reference frame5.75 MMC length of slot -0.50 Position tolerance 5.25 maximum boundary12.75 MMC width of slot -1.50 Position tolerance 11.25 Maximum boundaryC90 o10 10 35BAhttp://nileshshah.tk/Composite True Position2X 6 +/-0.251.5 A B C 0.5 AWithout Pattern Orientation ControlCA10 10 35BAs Shown on DrawingMeans This:0.5 Feature-Relating Tolerance Zone Cylinderpattern orientation relative to Datum A only (perpendicularity)1.5 Pattern-Locating Tolerance Zone Cylinderpattern location relative to Datums A, B, and CC10 10 35BTrue Position Related to Datum Reference FrameEach axis must lie within each tolerance zone simultaneouslyhttp://nileshshah.tk/Composite True Position2X 6 +/-0.251.5 A B C 0.5 A BWith Pattern Orientation ControlCA10 10 35BAs Shown on DrawingMeans This:True Position Related to Datum Reference Frame 1.5 Pattern-Locating Tolerance Zone Cylinderpattern location relative to Datums A, B, and CC10 10 35B0.5 Feature-Relating Tolerance Zone Cylinderpattern orientation relative to Datums A and BEach axis must lie within each tolerance zone simultaneouslyhttp://nileshshah.tk/Location (Concentricity)Datum Features at RFS6.35 +/- 0.05 0.5 AA15.95 15.90As Shown on DrawingMeans This:Axis of Datum Feature A 0.5 Coaxial Tolerance ZoneDerived Median Points of Diametrically Opposed Elements Within the limits of size and regardless of feature size, all median points of diametrically opposed elements must lie within a 0.5 cylindrical tolerance zone. The axis of the tolerance zone coincides with the axis of datum feature A. Concentricity can only be applied on an RFS basis.http://nileshshah.tk/Location (Symmetry)Datum Features at RFS6.35 +/- 0.05 0.5 AA15.95 15.90As Shown on DrawingMeans This:Center Plane of Datum Feature A 0.5 Wide Tolerance ZoneDerived Median Points Within the limits of size and regardless of feature size, all median points of opposed elements must lie between two parallel planes equally disposed about datum plane A, 0.5 apart. Symmetry can only be applied on an RFS basis.http://nileshshah.tk/True Position QuizAnswer questions #1-11 True or False1. Positional tolerances are applied to individual or patternsof features of size.2. Cylindrical tolerance zones more closely represent thefunctional requirements of a pattern of clearance holes.3. True position tolerance values are used to calculate theminimum size of a feature required for assembly.4. True position tolerances can control a feature's size. 5. Positional tolerances are applied on an MMC, LMC, orRFS basis.6. Composite true position tolerances should be avoidedbecause it is overly restrictive and difficult to check.7. Composite true position tolerances can only be appliedto patterns of related features.8. The tolerance value shown in the upper segment of acomposite true position feature control frame applies to the location of a pattern of features to the specified datums.9. The tolerance value shown in the lower segment of acomposite true position feature control frame applies to the location of a pattern of features to the specified datums.10. Positional tolerances can be used to control circularity 11. True position tolerances can be used to control centerdistance relationships between features of size.http://nileshshah.tk/True Position QuizQuestions #1-9 Fill in blanks (choose from below)1. Positional tolerance zones can be ___________, ___________,or spherical2. ________________ are used to establish the true (theoreticallyexact) position of a feature from specified datums.3. Positional tolerancing is a _____________ control. 4. Positional tolerance can apply to the ____ or ________________ ofa feature.5. _____ and ________ fastener equations are used to determineappropriate clearance hole sizes for mating details6. _________ tolerance zones are recommended to prevent fastenerinterference in mating details.7. The tolerance shown in the upper segment of a composite true position feature control frame is called the ________________tolerance zone.8. The tolerance shown in the lower segment of a composite true position feature control frame is called the ________________tolerance zone.9. Functional gaging principles can be applied when __________ ________ condition is specified surface boundary floating feature-relating pattern-locating rectangular cylindrical 3-dimensional basic dimensions projected location maximum material fixed axishttp://nileshshah.tk/Tolerances of RunoutCircular Runout (ASME Y14.5M-1994, 6.7.1.2.1)Total Runout (ASME Y14.5M-1994 ,6.7.1.2.2)http://nileshshah.tk/Features Applicable to Runout TolerancingInternal surfaces constructed around a datum axisExternal surfaces constructed around a datum axis Datum axis (established from datum featureAngled surfaces constructed around a datum axisDatum featureSurfaces constructed perpendicular to a datum axishttp://nileshshah.tk/Circular RunoutTotal Tolerance Circular runout can only be applied on an RFS basis and cannot be modified to MMC or LMC.MaximumMinimumFull Indicator Movement Maximum Reading Minimum Reading0+-Measuring position #1 (circular element #1)Full Part RotationMeasuring position #2 (circular element #2)When measuring circular runout, the indicator must be reset to zero at each measuring position along the feature surface. Each individual circular element of the surface is independently allowed the full specified tolerance. In this example, circular runout can be used to detect 2dimensional wobble (orientation) and waviness (form), but not 3-dimensional characteristics such as surface profile (overall form) or surface wobble (overall orientation).http://nileshshah.tk/Circular Runout0.75 A A(Angled Surface to Datum Axis)50 +/-0.25 oo50+/- 2As Shown on Drawing Means This:Allowable indicator reading = 0.75 max. Full Indicator Movement()0+The tolerance zone for any individual circular element is equal to the total allowable movement of a dial indicator fixed in a position normal to the true geometric shape of the feature surface when the part is rotated 360 degrees about the datum axis. The tolerance limit is applied independently to each individual measuring position along the feature surface. Collet or ChuckWhen measuring circular runout, the indicator must be reset when repositioned along the feature surface.Datum axis A360 o Part Rotation NOTE: Circular runout in this example only controls the 2-dimensional circular elements (circularity and coaxiality) of the angled feature surface not the entire angled feature surfaceSingle circular elementhttp://nileshshah.tk/Circular Runout0.75 A A(Surface Perpendicular to Datum Axis)50 +/-0.25As Shown on Drawing Means This:The tolerance zone for any individual circular element is equal to the total allowable movement of a dial indicator fixed in a position normal to the true geometric shape of the feature surface when the part is rotated 360 degrees about the datum axis. The tolerance limit is applied independently to each individual measuring position along the feature surface. 0Single circular element+When measuring circular runout, the indicator must be reset when repositioned along the feature surface. Allowable indicator reading = 0.75 max.360 o Part RotationDatum axis A NOTE: Circular runout in this example will only control variation in the 2-dimensional circular elements of the planar surface (wobble and waviness) not the entire feature surfacehttp://nileshshah.tk/Circular Runout0.75 A(Surface Coaxial to Datum Axis)A50 +/-0.25As Shown on Drawing Means This:The tolerance zone for any individual circular element is equal to the total allowable movement of a dial indicator fixed in a position normal to the true geometric shape of the feature surface when the part is rotated 360 degrees about the datum axis. The tolerance limit is applied independently to each individual measuring position along the feature surface.+0-Allowable indicator reading = 0.75 max.When measuring circular runout, the indicator must be reset when repositioned along the feature surface.Single circular element 360 o Part Rotation Datum axis ANOTE: Circular runout in this example will only control variation in the 2-dimensional circular elements of the surface (circularity and coaxiality) not the entire feature surfacehttp://nileshshah.tk/Circular Runout0.75 A-B(Surface Coaxial to Datum Axis)ABAs Shown on Drawing Means This:The tolerance zone for any individual circular element is equal to the total allowable movement of a dial indicator fixed in a position normal to the true geometric shape of the feature surface when the part is rotated 360 degrees about the datum axis. The tolerance limit is applied independently to each individual measuring position along the feature surface.+0-Allowable indicator reading = 0.75 max.When measuring circular runout, the indicator must be reset when repositioned along the feature surface.Machine centerSingle circular element Datum axis A-B360 o Part RotationMachine center NOTE: Circular runout in this example will only control variation in the 2-dimensional circular elements of the surface (circularity and coaxiality) not the entire feature surfacehttp://nileshshah.tk/Circular RunoutA B(Surface Related to Datum Surface and Axis)0.75 A B 50 +/-0.25As Shown on Drawing Means This:The tolerance zone for any individual circular element is equal to the total allowable movement of a dial indicator fixed in a position normal to the true geometric shape of the feature surface when the part is located against the datum surface and rotated 360 degrees about the datum axis. The tolerance limit is applied independently to each individual measuring position along the feature surface. Single circular elementAllowable indicator reading = 0.75 max.Stop collar 360 o Part Rotation+0-Collet or ChuckDatum axis BWhen measuring circular runout, the indicator must be reset when repositioned along the feature surface.Datum plane Ahttp://nileshshah.tk/Total RunoutTotal Tolerance Total runout can only be applied on an RFS basis and cannot be modified to MMC or LMC.MaximumMinimumFull Indicator Movement Maximum Reading Minimum Reading+0Full Part RotationIndicator Path0+-When measuring total runout, the indicator is moved in a straight line along the feature surface while the part is rotated about the datum axis. It is also acceptable to measure total runout by evaluating an appropriate number of individual circular elements along the surface while the part is rotated about the datum axis. Because the tolerance value is applied to the entire surface, the indicator must not be reset to zero when moved to each measuring position. In this example, total runout can be used to measure surface profile (overall form) and surface wobble (overall orientation).http://nileshshah.tk/Total Runout0.75 A A(Angled Surface to Datum Axis)50 +/-0.25 oo50+/- 2As Shown on Drawing Means This:When measuring total runout, the indicator must not be reset when repositioned along the feature surface.00+The tolerance zone for the entire angled surface is equal to the total allowable movement of a dial indicator positioned normal to the true geometric shape of the feature surface when the part is rotated about the datum axis and the indicator is moved along the entire length of the feature surface.Allowable indicator reading = 0.75 max. (applies to the entire feature surface)+Collet or ChuckFull Part RotationDatum axis ANOTE: Unlike circular runout, the use of total runout will provide 3-dimensional composite control of the cumulative variations of circularity, coaxiality, angularity, taper and profile of the angled surfacehttp://nileshshah.tk/Total Runout0.75 A(Surface Perpendicular to Datum Axis)10 35 50 +/-0.25AAs Shown on DrawingMeans This:The tolerance zone for the portion of the feature surface indicated is equal to the total allowable movement of a dial indicator positioned normal to the true geometric shape of the feature surface when the part is rotated about the datum axis and the indicator is moved along the portion of the feature surface within the area described by the basic dimensions.-0+ +10 35 Full Part Rotation-0When measuring total runout, the indicator must not be reset when repositioned along the feature surface.Allowable indicator reading = 0.75 max. (applies to portion of feature surface indicated)Datum axis ANOTE: The use of total runout in this example will provide composite control of the cumulative variations of perpendicularity (wobble) and flatness (concavity or convexity) of the feature surface.http://nileshshah.tk/Runout Control QuizAnswer questions #1-12 True or False1. Total runout is a 2-dimensionalcontrol.2. Runout tolerances are used on rotating parts. 3. Circular runout tolerances apply to single elements . 4. Total runout tolerances should be applied at MMC. 5. Runout tolerances can be applied to surfaces at rightangles to the datum reference.6. Circular runout tolerances are used to control an entirefeature surface.7. Runout tolerances always require a datum reference. 8. Circular runout and total runout both control axis tosurface relationships.9. Circular runout can be applied to control taper of a part. 10. Total runout tolerances are an appropriate way to limit&quot;wobble&quot; of a rotating surface.11. Runout tolerances are used to control a feature's size. 12. Total runout can control circularity, straightness, taper,coaxiality, angularity and any other surface variation.http://nileshshah.tk/Noteshttp://nileshshah.tk/Noteshttp://nileshshah.tk/Fixed and Floating Fastener Exerciseshttp://nileshshah.tk/Floating FastenersIn applications where two or more mating details are assembled, and all parts have clearance holes for the fasteners, the floating fastener formula shown below can be used to calculate the appropriate hole sizes or positional tolerance requirements to ensure assembly. The formula will provide a &quot;zero-interference&quot; fit when the features are at MMC and at their extreme of positional tolerance2x M10 X 1.5(Reference)General Equation Applies to Each Part IndividuallyA BH=F+T or T=H-FH= Min. diameter of clearance hole F= Maximum diameter of fastener T= Positional tolerance diameter2x10.50 +/- 0.25 ?.? MCalculate Required Positional ToleranceT=H-FH = Minimum Hole Size = F = Max. Fastener Size = 10.25 10ACalculate Nominal SizeT = 10.25 -10 T = ______2x ??.?? +/- 0.25 0.5 Mremember: the size tolerance must be added to the calculated MMC hole size to obtain the correct nominal value.H = F +TF = Max. Fastener Size = T = Positional Tolerance = 10 0.50BH = 10 + 0.50 H = ______http://nileshshah.tk/Floating FastenersIn applications where two or more mating details are assembled, and all parts have clearance holes for the fasteners, the floating fastener formula shown below can be used to calculate the appropriate hole sizes or positional tolerance requirements to ensure assembly. The formula will provide a &quot;zero-interference&quot; fit when the features are at MMC and at their extreme of positional tolerance2x M10 X 1.5(Reference)General Equation Applies to Each Part IndividuallyA BH=F+T or T=H-FH= Min. diameter of clearance hole F= Maximum diameter of fastener T= Positional tolerance diameter2x10.50 +/- 0.25 0.25 MCalculate Required Positional ToleranceT=H-FH = Minimum Hole Size = F = Max. Fastener Size = 10.25 10ACalculate Nominal SizeT = 10.25 -10 T = 0.252x 10.75 +/- 0.25 0.5 Mremember: the size tolerance must be added to the calculated MMC hole size to obtain the correct nominal value.H = F +TF = Max. Fastener Size = T = Positional Tolerance = 10 0.5BH= H=10 + .5 10.5 MinimumREMEMBER!!! All Calculations Apply at MMChttp://nileshshah.tk/Fixed FastenersIn fixed fastener applications where two mating details have equal positional tolerances, the fixed fastener formula shown below can be used to calculate the appropriate minimum clearance hole size and/or positional tolerance required to ensure assembly. The formula provides a &quot;zero-interference&quot; fit when the features are at MMC and at their extreme of positional tolerance. (Note that in this example the positional tolerances indicated are the same for both parts.)APPLIES WHEN A PROJECTED TOLERANCE ZONE IS USED2x M10 X 1.5(Reference)General Equation Used When Positional Tolerances Are Equal 10A BH=F+2T or T=(H-F)/2H= Min. diameter of clearance hole F= Maximum diameter of fastener T= Positional tolerance diameterremember: the size tolerance must be added to the calculated MMC size to obtain the correct nominal value.Calculate Required Clearance Hole Size.2x??.?? +/- 0.25 0.8 MA2X M10 X 1.5 0.8 M P 10Nominal Size (MMC For Calculations)H = F + 2TF = Max. Fastener Size = T = Positional Tolerance = 10.00 0.80H = 10.00 + 2(0.8) H = _____ Bhttp://nileshshah.tk/Fixed FastenersIn fixed fastener applications where two mating details have equal positional tolerances, the fixed fastener formula shown below can be used to calculate the appropriate minimum clearance hole size and/or positional tolerance required to ensure assembly. The formula provides a &quot;zero-interference&quot; fit when the features are at MMC and at their extreme of positional tolerance. (Note that in this example the positional tolerances indicated are the same for both parts.)APPLIES WHEN A PROJECTED TOLERANCE ZONE IS USED2x M10 X 1.5(Reference)General Equation Used When Positional Tolerances Are Equal 10A BH=F+2T or T=(H-F)/2H= Min. diameter of clearance hole F= Maximum diameter of fastener T= Positional tolerance diameterremember: the size tolerance must be added to the calculated MMC size to obtain the correct nominal value.Calculate Required Clearance Hole Size.2x11.85 +/- 0.25 0.8MA2X M10 X 1.5 0.8 M P 10Nominal Size (MMC For Calculations)H = F + 2TF = Max. Fastener Size = T = Positional Tolerance = 10.00 0.80H = 10.00 + 2(0.8) H = 11.60 Minimum BREMEMBER!!! All Calculations Apply at MMChttp://nileshshah.tk/Fixed FastenersIn fixed fastener applications where two mating details have equal positional tolerances, the fixed fastener formula shown below can be used to calculate the appropriate minimum clearance hole size and/or positional tolerance required to ensure assembly. The formula provides a &quot;zero-interference&quot; fit when the features are at MMC and at their extreme of positional tolerance. (Note that in this example the positional tolerances indicated are the same for both parts.)APPLIES WHEN A PROJECTED TOLERANCE ZONE IS USED2x M10 X 1.5(Reference)General Equation Used When Positional Tolerances Are Equal 10A BH=F+2T or T=(H-F)/2H= Min. diameter of clearance hole F= Maximum diameter of fastener T= Positional tolerance diameterremember: the size tolerance must be added to the calculated MMC size to obtain the correct nominal value.Calculate Required Clearance Hole Size.2x11.85 +/- 0.25 0.8MA2X M10 X 1.5 0.8 M P 10Nominal Size (MMC For Calculations)H = F + 2TF = Max. Fastener Size = T = Positional Tolerance = 10 0.8H = 10 + 2(0.8) H = 11.6 Minimum BREMEMBER!!! All Calculations Apply at MMChttp://nileshshah.tk/Fixed FastenersIn applications where two mating details are assembled, and one part has restrained fasteners, the fixed fastener formula shown below can be used to calculate appropriate hole sizes and/or positional tolerances required to ensure assembly. The formula will provide a &quot;zero-interference&quot; fit when the features are at MMC and at their extreme of positional tolerance. (Note: in this example the resultant positional tolerance is applied to both parts equally.)APPLIES WHEN A PROJECTED TOLERANCE ZONE IS USED2x M10 X 1.5(Reference)General Equation Used When Positional Tolerances Are Equal 10A BH=F+2T or T=(H-F)/2H= Min. diameter of clearance hole F= Maximum diameter of fastener T= Positional tolerance diameter2x11.25 +/- 0.25 0.5 MCalculate Required Positional Tolerance . (Both Parts)ANominal Size (MMC For Calculations)T = (H - F)/22X M10 X 1.5 0.5 M P 10 H = Minimum Hole Size = F = Max. Fastener Size = 11 10T = (11 - 10)/2 T = 0.50BREMEMBER!!! All Calculations Apply at MMChttp://nileshshah.tk/Fixed FastenersIn fixed fastener applications where two mating details have unequal positional tolerances, the fixed fastener formula shown below can be used to calculate the appropriate minimum clearance hole size and/or positional tolerances required to ensure assembly. The formula provides a &quot;zero-interference&quot; fit when the features are at MMC and at their extreme of positional tolerance. (Note that in this example the positional tolerances indicated are not equal.)APPLIES WHEN A PROJECTED TOLERANCE ZONE IS USED2x M10 X 1.5(Reference)General Equation Used When Positional Tolerances Are Not Equal10A BH=F+(T1 + T2)H = Min. diameter of clearance hole F = Maximum diameter of fastener T1= Positional tolerance (Part A) T2= Positional tolerance (Part B) 2x ??.?? +/- 0.25 0.5 Mremember: the size tolerance must be added to the calculated MMC hole size to obtain the correct nominal value.Calculate Required Clearance Hole Size.A2X M10 X 1.5 1 M P 10Nominal Size (MMC For Calculations)H=F+(T1 + T2)F = Max. Fastener Size T1 = Positional Tol. (A) T2 = Positional Tol. (B) = = = 10 0.50 1H = 10+ (0.5 + 1) H = ____ Bhttp://nileshshah.tk/Fixed FastenersIn fixed fastener applications where two mating details have unequal positional tolerances, the fixed fastener formula shown below can be used to calculate the appropriate minimum clearance hole size and/or positional tolerances required to ensure assembly. The formula provides a &quot;zero-interference&quot; fit when the features are at MMC and at their extreme of positional tolerance. (Note that in this example the positional tolerances indicated are not equal.)APPLIES WHEN A PROJECTED TOLERANCE ZONE IS USED2x M10 X 1.5(Reference)General Equation Used When Positional Tolerances Are Not Equal10A BH= F+(T1 + T2)H = Min. diameter of clearance hole F = Maximum diameter of fastener T1= Positional tolerance (Part A) T2= Positional tolerance (Part B) 2x 11.75 +/- 0.25 0.5 Mremember: the size tolerance must be added to the calculated MMC hole size to obtain the correct nominal value.Calculate Required Clearance Hole Size.A2X M10 X 1.5 1 M P 10Nominal Size (MMC For Calculations)H=F+(T1 + T2)F = Max. Fastener Size T1 = Positional Tol. (A) T2 = Positional Tol. (B) = = = 10 0.5 1H = 10 + (0.5 + 1) H = 11.5 Minimum BREMEMBER!!! All Calculations Apply at MMChttp://nileshshah.tk/Fixed FastenersIn applications where a projected tolerance zone is not indicated, it is necessary to select a positional tolerance and minimum clearance hole size combination that will allow for any out-of-squareness of the feature containing the fastener. The modified fixed fastener formula shown below can be used to calculate the appropriate minimum clearance hole size required to ensure assembly. The formula provides a &quot;zero-interference&quot; fit when the features are at MMC and at the extreme positional tolerance.APPLIES WHEN A PROJECTED TOLERANCE ZONE IS NOT USEDH P FA BDH= Min. diameter of clearance hole F= Maximum diameter of pin T1= Positional tolerance (Part A) T2= Positional tolerance (Part B) D= Min. depth of pin (Part A) P= Maximum projection of pinCalculate Nominal Size2x??.?? +/-0.25 0.5 Mremember: the size tolerance must be added to the calculated MMC hole size to obtain the correct nominal value.A2x 10.05 +/-0.05 0.5 MH= F + T1 + T2 (1+(2P/D))F = Max. pin size = 10 T1 = Positional Tol. (A) = 0.5 T2 = Positional Tol. (B) = 0.5 D = Min. pin depth = 20. P = Max. pin projection = 15BH = 10.00 + 0.5 + 0.5(1 + 2(15/20)) H= __________http://nileshshah.tk/Fixed FastenersIn applications where a projected tolerance zone is not indicated, it is necessary to select a positional tolerance and minimum clearance hole size combination that will allow for any out-of-squareness of the feature containing the fastener. The modified fixed fastener formula shown below can be used to calculate the appropriate minimum clearance hole size required to ensure assembly. The formula provides a &quot;zero-interference&quot; fit when the features are at MMC and at the extreme positional tolerance.APPLIES WHEN A PROJECTED TOLERANCE ZONE IS NOT USEDH P FH= F + T1 + T2 (1+(2P/D))H= Min. diameter of clearance hole F= Maximum diameter of pin T1= Positional tolerance (Part A) T2= Positional tolerance (Part B) D= Min. depth of pin (Part A) P= Maximum projection of pinA BDCalculate Nominal Size2x12 +/-0.25 0.5 Mremember: the size tolerance must be added to the calculated MMC hole size to obtain the correct nominal value.A2x 10.05 +/-0.05 0.5 MH= F + T1 + T2 (1+(2P/D))F = Max. pin size T1 = Positional tol. (A) T2 = Positional tol. (B) = Min. pin depth = Max. pin projection = 10 = 0.5 = 0.5 D = 20 P = 15BH = 10 + 0.5 + 0.5(1 + 2(15/20)) H= 11.75 MinimumREMEMBER!!! All Calculations Apply at MMChttp://nileshshah.tk/Answers to Quizzes and Exerciseshttp://nileshshah.tk/Rules and Definitions QuizQuestions #1-12 True or False1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12.Tight tolerances ensure high quality and performance. The use of GD&amp;T improves productivity. Size tolerances control both orientation and position. Unless otherwise specified size tolerances control form. A material modifier symbol is not required for RFS. A material modifier symbol is not required for MMC. Title block default tolerances apply to basic dimensions. A surface on a part is considered a feature. Bilateral tolerances allow variation in two directions. A free state modifier can only be applied to a tolerance. A free state datum modifier applies to &quot;assists&quot; &amp; &quot;rests&quot;. Virtual condition applies regardless of feature size.FALSE TRUE FALSE TRUE TRUE FALSE FALSE TRUE TRUE FALSE TRUE FALSEhttp://nileshshah.tk/Material Condition QuizFill in blanksInternal Features10.75 +0.25/-0 23.45 +0.05/-0.25 123. 5 +/-0.1 .895 .890MMCLMC10.75 23.2 123.4 .890MMC11 23.5 123.6 .895LMCExternal Features10.75 +0/-0.25 23.45 +0.05/-0.25 123. 5 +/-0.1 .890 .88510.75 23.5 123.6 .89010.5 23.2 123.4 .885Calculate appropriate valueshttp://nileshshah.tk/Datum QuizQuestions #1-12 True or False1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12.Datum target areas are theoretically exact. Datum features are imaginary. Primary datums have only three points of contact. The 6 Degrees of Freedom are U/D, F/A, &amp; C/C. Datum simulators are part of the gage or tool. Datum simulators are used to represent datums. Datums are actual part features. All datum features must be dimensionally stable. Datum planes constrain degrees of freedom. Tertiary datums are not always required. All tooling locators (CD's) are used as datums. Datums should represent functional features.FALSE FALSE FALSE FALSE TRUE TRUE FALSE TRUE TRUE TRUE FALSE TRUEhttp://nileshshah.tk/Datum QuizQuestions #1-10 Fill in blanks (choose from below)1. The three planes that make up a basic datum referenceframe are called primary, secondary, and tertiary.2. An unrestrained part will exhibit 3-linear and 3-rotational degreesof freedom.3. A planar primary datum plane will restrain 1-linear and 2-rotationaldegrees of freedom.4. The primary and secondary datum planes together will restrain five degreesof freedom.5. The primary, secondary and tertiary datum planes together willrestrain all six degrees of freedom.6. The purpose of a datum reference frame is to restrain movementof a part in a gage or tool.7. A datum must be functional, repeatable, and coordinated. 8. A datum feature is an actual feature on a part. 9. A datum is a theoretically exact point, axis or plane. 10. A datum simulator is a precise surface used to establish asimulated datum.restrain movement five coordinated repeatable tertiary two 3-rotational primary 2-rotational three functional one datum simulator 1-linear datum feature datum secondary 3-linear sixhttp://nileshshah.tk/Form Control QuizQuestions #1-5 Fill in blanks (choose from below)1. The four form controls are straightness, flatness,circularity, and cylindricity.2. Rule #1 states that unless otherwise specified a feature ofsize must have perfect form at MMC.3. Straightness and circularity are individual line or circularelement (2-D) controls.4. Flatness and cylindricity are surface (3-D) controls. 5. Circularity can be applied to both straight and tapered cylindricalparts.straightness straight perfect formcylindricity angularity flatness tapered profile circularity true positionAnswer questions #6-10 True or False6. Form controls require a datum reference. 7. Form controls do not directly control a feature's size. 8. A feature's form tolerance must be less than it's sizetolerance.FALSE TRUE TRUE FALSE TRUE9. Flatness controls the orientation of a feature. 10. Size limits implicitly control a feature's form.http://nileshshah.tk/Orientation Control QuizQuestions #1-5 Fill in blanks (choose from below)1. The three orientation controls are angularity, parallelism,and perpendicularity.2. A datum reference is always required when applying any ofthe orientation controls.3. Perpendicularity is the appropriate geometric tolerance whencontrolling the orientation of a feature at right angles to a datum reference.4. Mathematically all three orientation tolerances are identical. 5. Orientation tolerances do not control the location of a feature. perpendicularity datum feature angularity datum target location identical datum reference parallelism profileAnswer questions #6-10 True or False6. Orientation tolerances indirectly control a feature's form. 7. Orientation tolerance zones can be cylindrical. 8. To apply a perpendicularity tolerance the desired anglemust be indicated as a basic dimension.TRUE TRUE FALSE FALSE TRUE9. Parallelism tolerances do not apply to features of size. 10. To apply an angularity tolerance the desired angle mustbe indicated as a basic dimension.http://nileshshah.tk/Runout Control QuizAnswer questions #1-12 True or False1. Total runout is a 2-dimensionalcontrol.FALSE TRUE TRUE FALSE TRUE FALSE TRUE TRUE FALSE TRUE FALSE TRUE2. Runout tolerances are used on rotating parts. 3. Circular runout tolerances apply to single elements . 4. Total runout tolerances should be applied at MMC. 5. Runout tolerances can be applied to surfaces at rightangles to the datum reference.6. Circular runout tolerances are used to control an entirefeature surface.7. Runout tolerances always require a datum reference. 8. Circular runout and total runout both control axis tosurface relationships.9. Circular runout can be applied to control taper of a part. 10. Total runout tolerances are an appropriate way to limit&quot;wobble&quot; of a rotating surface.11. Runout tolerances are used to control a feature's size. 12. Total runout can control circularity, straightness, taper,coaxiality, angularity and any other surface variation.http://nileshshah.tk/Profile Control QuizQuestions #1-9 Fill in blanks (choose from below)1. The two types of profile tolerances are profile of a line, and profile of a surface. 2. Profile tolerances can be used to control the location, form,orientation, and sometimes size of a feature.3. Profile tolerances can be applied bilateral or unilateral. 4. Profile of a line tolerances are 2-dimensional controls. 5. Profile of a surface tolerances are 3-dimensional controls. 6. Composite Profile can be used when different tolerances arerequired for location and form and/or orientation.7. When using profile tolerances to control the location and/or orientation ofa feature, a datum reference must be included in the feature control frame.8. When using profile tolerances to control form only, a datumreference is not required in the feature control frame.9. In composite profile applications, the tolerance shown in the uppersegment of the feature control frame applies only to the location of the feature.composite profile bilateral virtual condition profile of a surface primary datum orientation datum reference unilateral profile of a line location true geometric counterpart formhttp://nileshshah.tk/Profile Control QuizAnswer questions #1-13 True or False1. 2.Profile tolerances always require a datum reference. Profile of a surface tolerance is a 2-dimensional control.FALSE FALSE TRUE FALSE TRUE TRUE FALSE TRUE FALSE FALSE TRUE TRUE FALSE3. Profile of a surface tolerance should be used to controltrim edges on sheet metal parts.4. Profile of a line tolerances should be applied at MMC. 5. 6. 7. 8. 9. 10. 11. 12. 13.Profile tolerances can be applied to features of size. Profile tolerances can be combined with other geometric controls such as flatness to control a feature. Profile of a line tolerances apply to an entire surface. Profile of a line controls apply to individual line elements. Profile tolerances only control the location of a surface. Composite profile controls should be avoided because they are more restrictive and very difficult to check. Profile tolerances can be applied either bilateral or unilateral to a feature. Profile tolerances can be applied in both freestate and restrained datum conditions. Tolerances shown in the lower segment of a composite profile feature control frame control the location of a feature to the specified datums.http://nileshshah.tk/True Position QuizAnswer questions #1-11 True or False1. 2. 3. 4. 5. 6. 7. 8.Positional tolerances are applied to individual or patterns of features of size. Cylindrical tolerance zones more closely represent the functional requirements of a pattern of clearance holes. True position tolerance values are used to calculate the minimum size of a feature required for assembly. True position tolerances can control a feature's size. Positional tolerances are applied on an MMC, LMC, or RFS basis. Composite true position tolerances should be avoided because it is overly restrictive and difficult to check. Composite true position tolerances can only be applied to patterns of related features. The tolerance value shown in the upper segment of a composite true position feature control frame applies to the location of a pattern of features to the specified datums. The tolerance value shown in the lower segment of a composite true position feature control frame applies to the location of a pattern of features to the specified datums. Positional tolerances can be used to control circularity True position tolerances can be used to control center distance relationships between features of size.TRUE TRUE TRUE FALSE TRUE FALSE TRUE TRUE9.FALSE10. 11.FALSE TRUEhttp://nileshshah.tk/True Position QuizQuestions #1-9 Fill in blanks (choose from below)1. Positional tolerance zones can be rectangular, cylindrical,or spherical2. Basic dimensions are used to establish the true (theoreticallyexact) position of a feature from specified datums.3. Positional tolerancing is a 3-dimensional control. 4. Positional tolerance can apply to the axis or surface boundaryof a feature.5. Fixed and floating fastener equations are used to determineappropriate clearance hole sizes for mating details6. Projected tolerance zones are recommended to prevent fastenerinterference in mating details.7. The tolerance shown in the upper segment of a composite trueposition feature control frame is called the pattern-locating tolerance zone.8. The tolerance shown in the lower segment of a composite trueposition feature control frame is called the feature-relating tolerance zone.9. Functional gaging principles can be applied when maximummaterial condition is specifiedsurface boundary floating feature-relating pattern-locating rectangular cylindrical 3-dimensional basic dimensions projected location maximum material fixed axishttp://nileshshah.tk/Virtual and Resultant Condition BoundariesInternal and External Features (MMC Concept)http://nileshshah.tk/Virtual Condition BoundaryInternal Feature (MMC Concept)14 +/- 0.5 1M A B CCXX.XABXX.XAs Shown on DrawingVirtual Condition Inner Boundary Maximum Inscribed Diameter 1 Positional Tolerance Zone at MMC()True (Basic) Position of Hole Other Possible Extreme Locations Boundary of MMC Hole Shown at Extreme Limit True (Basic) Position of Hole Axis Location of MMC Hole Shown at Extreme LimitCalculating Virtual Condition 13.5 1 12.5 MMC Size of Feature Applicable Geometric Tolerance Virtual Condition Boundaryhttp://nileshshah.tk/Resultant Condition BoundaryInternal Feature (MMC Concept)14 +/- 0.5 1M A B CCXX.XABXX.XAs Shown on DrawingResultant Condition Outer Boundary Minimum Circumscribed Diameter 2 Positional Tolerance Zone at LMC True (Basic) Position of Hole Other Possible Extreme Locations Boundary of LMC Hole Shown at Extreme Limit True (Basic) Position of Hole Axis Location of LMC Hole Shown at Extreme Limit()Calculating Resultant Condition (Internal Feature) 14.5 2 16.5 LMC Size of Feature Geometric Tolerance (at LMC) Resultant Condition Boundaryhttp://nileshshah.tk/Virtual Condition BoundaryExternal Feature (MMC Concept)14 +/- 0.5 1M A B CCXX.XXABXX.XAs Shown on Drawing1 Positional Tolerance Zone at MMC(Virtual Condition Outer Boundary Minimum Circumscribed Diameter)True (Basic) Position of Feature Other Possible Extreme Locations Boundary of MMC Feature Shown at Extreme Limit True (Basic) Position of Feature Axis Location of MMC Feature Shown at Extreme LimitCalculating Virtual Condition 14.5 1 15.5 MMC Size of Feature Applicable Geometric Tolerance Virtual Condition Boundaryhttp://nileshshah.tk/Resultant Condition BoundaryExternal Feature (MMC Concept)14 +/- 0.5 1M A B CCXX.XABXX.XAs Shown on Drawing(Resultant Condition Inner Boundary Maximum Inscribed Diameter)2 Positional Tolerance Zone at LMCTrue (Basic) Position of Feature Other Possible Extreme Locations Boundary of LMC feature Shown at Extreme Limit True (Basic) Position of Feature Axis Location of LMC Feature Shown at Extreme LimitCalculating Resultant Condition (External Feature) 13.5 2 11.5 LMC Size of Feature Geometric Tolerance (at LMC) Resultant Condition Boundaryhttp://nileshshah.tk/Extreme Variations of Form Allowed By Size Tolerance25.1 2525 (MMC)25.1 (LMC)25.1 (LMC)25 (MMC)MMC Perfect Form Boundary25.1 (LMC)Internal Feature of Sizehttp://nileshshah.tk/Extreme Variations of Form Allowed By Size Tolerance25 24.924.9 (LMC)25 (MMC)24.9 (LMC)MMC Perfect Form Boundary25 (MMC)24.9 (LMC)External Feature of Sizehttp://nileshshah.tk/Extreme Variations of Form Allowed By Size Tolerance25.1 25 25 24.925 (MMC)25.1 (LMC)24.9 (LMC)25 (MMC)25.1 (LMC)24.9 (LMC)25 (MMC)MMC Perfect Form Boundary25 (MMC)25.1 (LMC)24.9 (LMC)http://nileshshah.tk/E N Dhttp://nileshshah.tk/Noteshttp://nileshshah.tk/Noteshttp://nileshshah.tk/Notes`

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