Geometric Dimensioning and Tolerancing Handbook: Applications, Analysis & Measurement

Geometric Dimensioning and Tolerancing Handbook: Applications, Analysis & Measurement GDT-HDBK - 2009

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Table of Contents

By James D. Meadows

This handbook is written per the new ASME Y14.5-2009 standard. This is the most comprehensive GD&T volume ever written by a single author. Geometric Dimensioning and Tolerancing has the unprecedented ability to cover almost every facet of tolerancing. Time can be a limiting factor in topics to be covered in a workshop or course. . . but the book has it all!

Although based on the rules found in the ASME Y14.5 standard, it also covers topics from other recently published standards by ASME not found in older texts. It includes step-by-step procedures for dimensioning and tolerancing parts and assemblies. It shows how to analyze the tolerances applied using both worst case and statistical analysis. This book demonstrates the connection between the application of functional geometric tolerances and its effect on manufacturability and inspection, stressing optimal ways to
achieve a high-quality product at the lowest possible cost to the customer.

  • Publisher: ASME
  • Publish Date: 2009
  • Pages: 560
  • Language: English
  • ISBN: 9780971440166

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Table of Contents

Partial Table of Contents Chapter 1 Symbols, Rules, Charts Geometric Characteristics; Symbols; New Symbols; Old Symbols, New Meanings; Charts Food Chains of Symbology; A Few Basic Definitions, Formulas and Guidelines; New Rule Regarding the Use of Regardless of Feature Size; Maximum Material Boundary, Least Material Boundary and Regardless of Material Boundary ; Actual Minimum Material Envelope vs. Actual Mating Envelope; Flatness of the Derived Median Plane; Types of Controls; Tolerances; General Rules for Tolerances. Chapter 2 Selecting a Tolerancing Approach Datums and Datum Features; Defining, Tolerancing and Qualifying Datum Features; Fixed Fastener Assembly Tolerancing Formula; Simultaneous Requirement Rule; Reading a Feature Control Frame. Chapter 3 Datum Feature Simulators Datum Feature Simulators: Physical and Imaginary; Fixtures, Gages and Virtual Condition Boundaries. Chapter 4 Boundaries and Material Condition Symbols, MMC, LMC & RFS Dimensioning and Tolerancing Overview; Rule #1: Size Tolerance and Form Tolerance are Interdependent; Exceptions to Rule #1; New Principle of Independency Symbol; GO Gages; Brief Comparison of Concentricity, Circular Runout, Total Runout and Position Tolerancing; Introduction of Orientation on Mating Parts; Material Condition Symbols and Concepts Explained; Regardless of Feature Size; Least Material Condition; Maximum Material Condition; Inner and Outer Boundary Calculations. Chapter 5 Major Concepts of Geometric Dimensioning and Tolerancing Converting from Plus and Minus Tolerance to Geometric Tolerance; Position; Profile; Selecting Datum Features; Size Tolerance Controls Form Tolerance (Rule #1), GO Gages; Flatness; Perpendicularity; Mating Part Tolerancing; Reading the Feature Control Frames as a Language; Functional Gages; Calculating Inner and Outer Boundaries; Virtual Condition; Resultant Condition; Practical Absolute Gage Tolerancing; Bonus Tolerancing Formulas; Allowed vs. Actual Deviation from True Position Calculations; Conversion Chart Inches; Conversion Chart Millimeters; Tolerance Zone vs. Boundary Verification; Another Difference between Bonus Tolerance (Growth) and Datum Shift (Movement) of Tolerance Zones. Chapter 6 Form Flatness; Straightness; Cylindricity; Circularity (Roundness); Spherical Diameters Controlled with Circularity; Average Dimensions. Chapter 7 Orientation Parallelism; Parallelism of a Tangent Plane; Perpendicularity; Angularity; Angularity of a Tangent Plane; Angularity as a Refinement of Position; Shifting vs. Growing Tolerance Zones. Chapter 8 Profile Profile of a Surface; New Symbol for Unequal or Unilateral Profile Tolerancing; Profile of a Line; The Power and Versatility of Profile (Mating Parts); Tolerancing Mating Part Profiles; Composite Profile; Composite vs. Two Single Segment Profile Controls; Profiling Patterns of Features Using 3 Levels of Profile Tolerances; Coplanarity; Continuous Feature of Size Symbol; Dimension Origin Symbol; Locating Offset Surface with Profile of a Surface; Conicity. Chapter 9 Runout Circular Runout; Total Runout; Comparison of Perpendicularity and Total Runout on a Planar Surface. Chapter 10 Concentricity and Symmetry Concentricity; Comparison of Coaxiality Controls; Symmetry. Chapter 11 Datums How They are Selected and What They Mean; Specifying Degrees of Freedom; Datum Feature Simulation; Designating Degrees of Freedom on the Part Drawing; Establishing a Valid Datum Plane; Effects of Differing Datum Precedence on Part Acceptance; Curved Surface as a Datum Feature; Conical Datum Features; Datum Feature Pattern Referenced Regardless of Material Boundary; Inclined Datum Feature; Constant Cross Sections and Complex Datum Features; Specifying Degrees of Freedom in the Feature Control Frame; Multiple Datum Reference Frame Identification; Correct Material Boundary Size Specified Next to the Datum Feature; Correct Material Boundary Calculations; Using the Translation Modifier; Basic or BSC Spelled Out in a Feature Control Frame; Planar Datum Feature Simulated at Regardless of Material Boundary (RMB); Planar Datum Feature Simulated at Maximum Material Boundary (MMB); Offset Datum Features of Size Simulated at RMB and MMB; Profiled Datum Features Simulated at RMB and MMB; Irregular Datum Features of Size. Chapter 12 Centerplane Datums An Overview; Centerplane Datums on Mating Parts in a Fixed Fastener Assembly. Chapter 13 Position with Fixed Fastener Assemblies and Projected Tolerance Zones Tolerancing Mating Parts in a Fixed Fastener Assembly; Projected Tolerance Zones and How they are Measured; Datum Feature Shift/Pattern Shift; Alternate Method Using Chain Lines to Show Projected Tolerance Zones; Calculating Clearance Hole Sizes Needed Without Projected Tolerance Zones. Chapter 14 Tolerancing Mating Parts in a Floating Fastener Assembly Floating Fastener Assembly Condition (Radial Hole Patterns); Assigning Datum Features to Mating Parts with Radial Hole Patterns; Calculating Position Tolerance; Two Single Segment Position Tolerancing; Calculating Minimum Wall Thicknesses; Accumulative Datum Shift on Mating Parts in an Assembly; Tolerance Zones and Their Movement with Two Single Segment Position. Chapter 15 Direct vs. Indirect Relationships Overview; Tolerancing Mating Parts Holding Function Directly and Indirectly; Switching Datums in Mid Stream; Unique Effects of Utilizing the LMC and LMB Concepts; Wall Thickness Calculations. Chapter 16 Datum Targets Flexible Parts, Datum Targets and Partial Datum Features; Sheet Metal Panels and GD&T Sheets; Equalizing Datums; Moveable Targets, Finding the Datum Planes and Fixturing; Datum Target Symbols for Spherical Diameters; Centerplane Datums; Spherical Tolerance Zones. Chapter 17 Datum Feature Scheme Choices Datum Feature Patterns and Profile; Simultaneous Requirements; Compound Datum Features of Size; Secondary and Tertiary Datum Features of Size; Finished Machining Requirements for a Cast Part. Chapter 18 Flexible Parts Flexible Parts and Inspecting Them in the Way They Work; Temporary Datum Features; Common Misconceptions 355; Free State Variation in Sheet Metal Parts; Specifying Restrained State Inspection; Fixturing Sheet Metal Parts; Profile ALL OVER Controls and What They Mean. Chapter 19 Position Boundary Concept Position Boundary; Elongated Holes; Functional Gages and Virtual Condition Boundaries; Tolerancing Hoses, Pipes and Tubing with Positional Boundary; Tolerancing Oddly Configured Features with Positional Boundary; Oddly Configured Datum Features and How to Represent them in Gages; Tolerance Zones vs. Boundary Concept Explanation; Rectangular Tolerance Zones for Round Holes; Bi directional Position Tolerancing, Polar Coordinate Method.

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