INDEX. Datum feature symbol, 21

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1 INDEX Actual Mating Envelope, 11 Actual Minimum Material Envelope, 11 All Around, 149 ALL OVER, 157, 158,363 Allowed vs. actual deviations from true position, 82 Angularity, 136 axis, 140 line elements, 139 surface, 136 tangent plane, 138 Angular orientation, 510, 511, 513, 521, 524, 528, 533, 534 Angular units, 16 Average dimensions, 119 Basic Dimension, 15, 16, 45, 46 Basic or BSC Spelled Out in a Feature Control Frame, 250 Bi-directional tolerancing, 378 through 380 Bonus tolerance, 78 through 89, 535 Boundaries, 50 Boundary vs. tolerance zone, 88 Calculating tolerances, 9, Centerplane controls, 135, 264 through 278, 336 Chain lines, 322, 292 Circularity, 113 Coaxiality, comparison of controls, 42, 189, 193, 195, 208, 210 through 214 Components of a feature control frame, 26 through 28 Composite tolerancing, position, 381 through 405 profile, 168 profile of patterns, 176 Composite vs. two single segment controls, position, 398 through 414 profile, 173 through 176 Compound datum features, 197, 199, 200, 345 Concentricity, 208 Conicity, 187 through 190 Continuous Feature of Size, 177, 202 Converting from plus and minus to geometric tol., 58 through 74, 383 through 390 Coplanarity, 177 through 183 Coplanarity and locating offset surfaces, 184 Cylindricity, 109 Datum feature symbol,

2 Index Datum target symbol, 322 Datums, 21 angular orientation, 510, 511, 513, 521, 524, 528, 533, 534 centerplanes, 135, 264 through 278, 336 compound, 197, 199, 200, 345 conical, 239 curved datum features, 238 degrees of freedom, 223, 227, 243 equalizing, 329 feature of size requirements, 347 features, 20 feature shift, 89, 142, 289, 303 feature simulators (Physical and Imaginary), 30 through 34 feature symbols, 21 inclined, 241 in-process, 354 moveable datum targets, 333 multiple datum reference frame degrees of freedom specification, 245 oddly configured, 238, 374 partial, 322, 426 pattern, 240, 339 pattern shift, 89, 142, 289, 303 precedence effect, 237 rockers, 232 through 237 secondary/tertiary datum features of size (holes), 514 through 516, 519 through 525 selection of, 8, 9, 219 shift, 89, 142 through 145, 289, 303 targets, 322 through 335 temporary, 354 translation symbol, 249 valid datum plane, 232 through 237 when datums may and may not be used, 2 Definitions, 539 Degrees of spatial freedom, 223, 227, 243, 245 Differential measurements, 98, 107, 209 Dimension origin symbol, 180 Direct vs. indirect tolerancing, 306 through 310 Envelopes of perfect form, 8, 37 through 42 Envelopes of perfect orientation at MMC, 336, 337, 513, 514, 517 through 519, 525 Feature control frames, components, 2, 21 through 28 reading, 28, 75, 133, 284, 286 Feature of Size (Regular), 8 Feature of Size (Irregular), 8, 258 through

3 Index Fixed and floating fastener assembly formulas, 9, 283, 298, 531 Fixed fastener assembly tolerance formulas, 9, 283, 531 Fixed fastener assembly conditions, 265 through 278, 280 through 293 Fixtures, 32, 33, 352, 359 through 362 (also see Gages in Chapter 22) Flatness, 95 rate basis, 97 derived median plane, 12, 98 Flexible parts, 322, 352 Floating fastener assembly conditions, 298 Floating fastener assembly tolerance formula, 9, 298 Food chains of Symbology, 6, 7 Form, 93 Formulas, 9 Free state variation, 353, 355 through 359 Functional gages, 76, 423 through 435 Gages, 423 through 435 functional, 31, 426 through 435 GO, 40, 423 through 425 NOGO, 426 tolerancing, 423 through 435 Gears, 530 through 536 General Rules, 15 Geometric characteristic symbols, 2 Geometric Dimensioning and Tolerancing as a language, 508 through 525, 530 through 536 GO gages, 22-2 Independency Symbol and Principle, 38 Irregular Feature of Size, 8, 258 through 261 Inspection Planning, 436 through 441 Least Material Condition, 8, 48, Least Material Boundary, 10, Least Squares Center, 125, 126 Limit dimensioning, 16, 18, 19 Maximum Material Boundary, 10 Material conditions, 45 least, 8, 48 maximum, 8, 49 regardless of feature size, 8, 45 when they can and can t be used, 2 Material Boundaries, 10 Mating Envelope, 124, 125,

4 Index Maximum material condition, 8 Minimum wall thickness calculations, 301, 391 through 395, 493 through 501 Orientation, 120 Orientation of centerplanes, 135 Parallelism, 122 through 128 Pattern datums, 240, 259, 260, 339 Pattern shift, 89, 142 through 145, 289, 290, 303 Perpendicularity, axis, 132, 133 centerplane, 135 surface, 129, 130, 131, 134 Planar Datum Features Referenced at MMB, 253, 255, 256 Position, bi-directional, 378 through 380 boundaries, 367 through 377 coaxiality, 42, 189, 193, 195, 208, 210 through 214 composite, 386 through 414 composite positional tolerancing vs. two single segments, 398 through 414 odd configurations, 373 through 375 symmetry, 215, 216 Principle of Independency, 38 Profile of a line, 160 through 162 Profile of a surface, 147 through 159, 163 through 172, Profile of a surface for mating features, 163 through 167 Profile of a surface-composite Tolerancing, 168 through 172 Profile of a Surface- Composite vs. Two Single Segments, 173 through 176 Projected tolerance zones, 274, 286 through 289 Radii, 17 Reading a feature control frame, 28 Regardless of Feature Size Rule, 10 Regardless of Material Boundary, 10 Repetitive Patterns, 263 Restrained state, 355 through 358 Resultant Condition, 9 Root Sum Square formula, 17, 451 through 457, 475, 477 Roundness, 113 Rules, 8, 15 Rule #1,37 Rule #1 exceptions, 38 Runout, circular, 192 total, 195 Runout vs. perpendicularity, 203 through

5 Index Separate requirements, 499, 500, 519, 523 Sheet metal, 327, 328, 353, 356 through 365 Simultaneous requirements, 28, 523, 538 Size, 8, 37, 38 Spherical diameters, 118, 335, 337 Splines, 536 Spotface Symbol, 5 Statistical formulas, Symbology and terminology, 451 through 480 Statistical tolerancing, 451 through 465 Straightness, derived median line, 104 through 108 surface, 100 Surface vs. axis verification, 88 Symbols, 2, 3, 4, 5, 6 Symbols-how they relate to each other, summary of their meaning, 6, 7, 42, 210 through 214 Symmetry, 215, 216 Table, actual deviations from true position, 84, 85 Tangent plane, 126, 138 Taylor principle, 8 Temperature, 18 Temporary datum features, 354 Threaded features, 274, 286 through 289, 536 Tolerances, 13 Tolerance sequence application, 26, 27, 28, 60 through 74, 265 through 278, 280 through 291 Tolerance Stack-Up Analysis, 443 through 450, 482 through 492 Tolerance Zone vs. Boundary verification, 88 Translation Symbol, 248, 249 Types of controls, 13 Two single segment position, 398 through 414 Valid datum plane establishment, 232 through 236 Verification of position tolerances, 78 through 89 Virtual conditions, 9, 31, 45 through 57 Wall thickness calculations, 301, 391 through 395, 493 through 501 Why use GD&T, 381 Writing an Inspection Plan, 436 through 441 Zero tolerancing at MMC,

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7 Bibliography ASME Y Dimensioning and Tolerancing, The American Society of Mechanical Engineers, New York, New York. ASME Y14.5M-1994 Dimensioning and Tolerancing, The American Society of Mechanical Engineers, New York, New York. ASME Y14.5.1M-1994 Mathematical Definition of Dimensioning and Tolerancing Principles, The American Society of Mechanical Engineers, New York, New York. ASME Y Dimensioning and Tolerancing Principles for Gages and Fixtures, The American Society of Mechanical Engineers, New York, New York. ASME Y Digital Product Definition Data Practices, The American Society of Mechanical Engineers, New York, New York. German Democratic Standard TGL (1986). Methods of Measuring Deviations from Cylindricity, Germany. ISO 1101:2004(E) Geometrical Tolerancing-Tolerances of form, orientation, location and run-out. International Organization of Standards. ASME Y Castings and Forgings. The American Society of Mechanical Engineers, New York, New York. Geometric Dimensioning and Tolerancing, Applications and Techniques for Use in Design, Manufacturing, and Inspection by James D, Meadows published in 1995 by Marcel Dekker, Inc., New York, New York. Geometric Dimensioning and Tolerancing Workbook/Answerbook by James D. Meadows published in 1997 by Marcel Dekker, Inc., New York, New York. Geometric Dimensioning and Tolerancing in 2007 by James D. Meadows published in 2007 by James D. Meadows & Associates, Inc., Hendersonville, TN. Geometric Dimensioning and Tolerancing in 2007 Workbook and Answerbook by James D. Meadows published in 2007 by James D. Meadows & Associates, Inc., Hendersonville, TN. Tolerance Stack-Up Analysis for Plus and Minus Tolerancing and Geometric Dimensioning and Tolerancing by James D. Meadows published in 2001 by James D. Meadows & Associates, Inc. Measurement of Geometric Tolerances in Manufacturing by James D. Meadows published in 1998 by Marcel Dekker, Inc., New York, New York. Differences and Similarities between ASME and ISO Dimensioning and Tolerancing Standards by James D. Meadows published in 2006 by James D. Meadows & Associates, Inc. DataMyte Handbook a practical guide to computerized data collection for Statistical Process Control by DataMyte Business Allen-Bradley Company, Inc. Statistical Tolerancing, A Solution to Procurement Problems-US Army Tank Command. 573

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9 Other GD&T Course Materials Written by James D. Meadows Topics covered: GD&T Tolerance Stack-Up Analysis DVD GD&T Training Series Measurement ASME vs. ISO 574

10 Other GD&T Course Materials 575