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Profile Concentricity
(the Y14.5 kind)
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Applied Geometrics Inc.
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Applied Geometrics Inc.
Mission Statement
Applied Geometrics, Inc. is committed to
train manufacturing industrys personnel
how to realize a higher return on investment
by utilizing a standardized, concise,
internationally accepted language of
engineering expression.
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Definition: Profile tolerancing is a method used to specify auniform amount of variation of a surface or line elements of a
surface.
Tolerance Zone: Profile tolerance specif ies a tolerance zone
confined by two equidistant profiles within which the entire
surface must lie.
Profile d k(Surface and Line)
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Profile d k(Surface and Line)
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Unilateral ProfileAlternate (Still allowed) Practice From 1994
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Unilateral Profile 2009
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Unequally Disposed Profile
Alternate (Still allowed) Practice From 1994
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Unequally Disposed Profile 2009
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Profile Between Two Points
A Symbol ( ) is used to indicate a tolerance applies to
a limited segment of a surface between designated extremes.
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Profile Non-Uniform Transition
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Default Transition Creates a Step
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Smooth Transition Definition
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Transition Needs To Be Defined
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Profile Non-Uniform Zone
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Profile All Over
The term ALL OVER is allowed.
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Profile All Over
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Profile Can ControlCo-planarity
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Profile Can ControlCo-planarity
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Profile Can ControlCo-planarity
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Profile Can ControlCo-planarity
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Profile Can ControlCo-planarity
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Datum Axis Definition
One Diameter of Sufficient Length
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Datum Axis Definition
One Short Diameter with aPlanar Datum Feature
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Datum Axis Definition
Two (or More) Short DiametersSufficiently Separated
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Coaxial Control One wrong way
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Datum Feature B Fails Position Requirement
Coaxial Control One wrong way
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Coaxial Control Another wrong way
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Coaxial Control Another wrong way
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Coaxial Control
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Coaxial Control
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Coaxial Control
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Runout (Circular and Total)
Definition: The composite deviation from the
desired form of a part surface of revolutionduring full rotation (360 deg.) of the part on adatum axis.
Tolerance Zone:A total width zone bounded by
two boundaries of revolution within which:Circular Runout: all points of each circular element
(cross-section) of the considered feature must l ieregardless of the size of the considered feature.
Total Runout: all points of the entire surface of theconsidered feature must lie regardless of the size ofthe considered feature.
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Runout (Circular and Total)Tolerance Value
Runout tolerance states how far an
actual surface is permitted to deviate
from the desired form implied by thedrawing during full rotation (360 deg.) of
the part on a datum axis.
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Circular RunoutSYMBOL MEANING
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Circular Runout
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Circular RunoutComposite Controls
CIRCULARITYCOAXIALITY
Position & Concentricity
DML STRAIGHTNESS
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Typical for Controlling Wobble
Only controls elements not overall shape
Circular RunoutTapered, Contoured, & Perpendicular Surfaces
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Circular RunoutTapered, Contoured, & Perpendicular Surfaces
Gages Must Be Perpendicular to the Nominal Surfaces
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SYMBOL MEANING
Total Runout
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Total Runout
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Total RunoutComposite Controls
CYLINDRICITYCOAXIALITY
Position & Concentricity
DML STRAIGHTNESS
SURFACE STRAIGHTNESS
(Cylindricity for NominallyCylindrical Features)
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Also Controls Wobble
Also Controls Shape
Total RunoutTapered & Perpendicular Surfaces
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Taper, Angularity, Concentricity Perpendicularity
Total RunoutTapered & Perpendicular Surfaces
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Definition: Concentricity is the condition
where the median points of all
diametrically opposed elements of allindividual cross-sections of a figure of
revolution are congruent with the axis
of a datum feature.
Concentricity r
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Concentricity r
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SYMBOL MEANING
Concentricity r
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A
A
Concentricity r
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Concentricity r
r
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Usually when a designer calls outconcentricity the true design
requirements are:Position j
Circular Runout
Total Runout t
Concentricity r
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Definition: Symmetry is the condition wherethe median point of all the opposedelements of the considered feature are
congruent with the center plane of thedatum feature.
Tolerance Zone: Symmetry tolerance zone isa total width tolerance zone within whichthe median points of the considered featuremust lie.
Symmetry i
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SYMBOL MEANING
Symmetry i
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Symmetry i
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Symmetry iLIKE
CONCENTRICTY
A DIFFICULTREQUIREMENT TO
INSPECT
Symmetry? i
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y y
Or Position? j
How Do I Deal with the Profile and
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Copyright, Applied Geometrics, Inc.
How Do I Deal with the Profile and
Concentricity in Calypso??
Come to Ryan Stauffers Presentation!! ;-)
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Copyright, Applied Geometrics, Inc.
Contact Info:
Mark E. Foster, President
Applied Geometrics, Inc.
(708) 867-5927 (Corporate HQ)
(248) 981-3536 (Direct/Mobile)