Text Contents

Introduction
- Geometric Product Definition Principles
- Verification of Position
- Geometric Characteristic Symbols
- Chart of Symbols
- Rules Sheet

Chapter #1 Geometric Dimensioning and Tolerancing
- An Explanation of Tolerance Zone Conversions
- Surfaces, Features, Features of Size, Datum Features, Datum Features of Size, and Datums
- Tolerances
- Components Common to a Geometrically Dimensioned and Toleranced Drawing
- Fits and Allowances

Chapter #2 Maximum Material Condition, Least Material Condition, and Regardless of Feature Size
- Maximum Material Condition: Meaning and Uses
- Least Material Condition: Meaning and Uses
- Regardless of Feature Size

Chapter #3 How to Read a Feature Control Frame

Chapter #4 Size Controls Form
- The Taylor Principle
- Gaging Size Limits
- Merging Theory with Reality

Chapter #5 Rules, Concepts, Characteristics, and Untoleranced Dimensions
- Individual or Related to Datums
- Material Conditions
- Untoleranced Dimensions
- Components Common to a Feature Control Frame

Chapter #6 Datums
- Datum Features
Concurrent Engineering
Two Coaxial Diameters as a Datum Feature
Pattern Datums
Datum Features of Size at MMC
Threads, Gears and Splines
Datum Targets
- Oddly Configured and Curved Surfaces as Datum Features
- Equalizing Datums
- Datum Feature Symbols
- Flexible Parts
Position and Profile Using Compound Datums (Two Holes)
Common Misconceptions
New Revision ANSI/ASME Y14.5 - Change
Fixturing-Assuming Target Points are the Same as the Datum Planes
Two Mating Rigid Parts
Two Mating Flexible Parts
Free State Variation in Sheet Metal Parts
- Direct vs. Indirect Tolerancing

Chapter #7 The Maximum Material Condition Symbol and Its Ramifications

Chapter #8 Relationships Between Individual Features

Chapter #9 Virtual Condition and Resultant Condition Boundaries
- Virtual Condition (MMC Concept)
- RFS Does Not Mean Tighter Fits
- Unique Effects on Controlled Features that Invoke the LMC Principle
- Wall Thickness Calculations

Chapter #10 Datum Feature of Size Representation
- Modes of Datum Feature Representation
- Angular Orientation

Chapter #11 Form Controls
- Flatness
- Straightness
A Versatile Form Control
Straightness of a Derived Median Line
Derived Median Plane Straightness
Straightness RFS
- Circularity
Theory vs. Reality
Circularity (Roundness) Measurement Instruments
- Free State Variation
- Cylindricity

Chapter #12 Orientation Controls
- Orientation Chacteristics
- Angularity
Angularity of a Feature of Size
Orientation of Line Elements
- Perpendicularity
Perpendicularity of a Cylindrical Feature of Size to a Datum Axis
- Parallelism

Chapter #13 Profile
- Line Element Controls
- The Power and Versatility of Profile to Control Irregular and Unusual Features
- Composite Profile vs. Two Single- Segment Profile Controls

Chapter #14 Runout
- Circular Runout
- Total Runout
- Reactions to a Non- Perfect Datum Establishment

Chapter #15 Location
- Concentricity
- The Return of Symmetry
- Position
Floating Fasteners
Projected Tolerance Zones (Fixed Fasteners)
Inspecting Threaded Holes
Projected Tolerance Zones for Tight Fitting Holes
Comparison of Coaxiality Controls
Zero Tolerancing at MMC
Composite Tolerancing
Composite Positional Tolerancing - Tolerancing Mating Parts
Composite Positional Tolerancing vs. Two Single- Segment Positional Tolerancing Controls
Converting from Plus and Minus to True Position Tolerancing

Chapter #16 A Logical Approach to Part Tolerancing
- Linear Segmented Thinking
- Refining Functional Geometric Controls to be More Cost Effective
- Implying a Manufacturing Sequence on Complex Part Configurations
- Centerplane Datums

Chapter #17 Dimensioning and Tolerancing Schemes
- Common Tolerancing Methods
- Design, Inspection, Production and Prototype Needs and Capabilities regarding Dimensioning and Tolerancing Methods

Chapter #18 Steps for the Development of a Dimensional Inspection Plan
- The Dimensional Inspection Plan Format
Plan Development
Each Measurement
What is being Verified?
Hard vs. Soft Gages
Choosing Gages
Determining Uncertainty
- A Dimensional Inspection Plan Example

Chapter #19 Graphical Data Analysis
- Graphical Inspection Data Analysis (Checking Datum- to- Pattern Requirements)
- Composite Positional Controls (Checking Feature- to- Feature Requirements)
- Pattern of Features Controlled to a Center Datum Feature of Size
- Analyzing Pattern/Datum Shift with Datum Features of Size Referenced at MMC
- Visual Inspection of Positional Controls by Virtual Condition Boundary Verification
Non- visual Techniques
Visual Techniques

Chapter #20 Functional Gaging
- Functional Gage Design
- Tolerance on the Work (Ten Percent of What?)
- Push Pin Gages (Advantages: Tolerance Distribution)
Considerations of Functional Gage Design, Dimensioning and Tolerancing

Definitions