Read GeoTol Pro Workbook, Based on ASME Y14.5 2009 Standard Table of Contents text version

Geo Tol Pro

A Practical Guide to Geometric Tolerancing

Table of Contents

and

Training Program Outline

Unit 1 : Introduction - Symbols and Terms Introduction to Geometric Tolerancing

ASME Standards related to Product Definition and Metrology

1.1 1.2

1.4

ISO Standards related to Product Definition and Metrology Tolerances are like Bacteria

Common Symbols

1.5 1.6

1.7

Common Symbol Application Features of Size and Features without Size Geometric Tolerancing Characteristics Geometric Tolerance Zone Shapes Geometric Tolerancing Categories Feature Control Frame Symbols Associated with a Feature Control Frame Symbols Related to Datum Identification Index Plate - Practical Example

Index Plate - Matching a Perfect DRF to an Imperfect Part Index Plate - Practical Example in 3D

1.8 1.9 1.10 1.11 1.12 1.13 1.15 1.16 1.17

1.18

Definitions Fundamental Rules

Material Conditions - MMC and LMC

1.19 1.20 1.21

1.22

Workshop Exercise 1. 1 Workshop Exercise 1.2 Unit 2 : Limits of Size

Feature of Size Definition Limits of Size (Rule #1, Envelope Principle, Taylor Principle)

1.23 1.25 2.1

2.2 2.3

Limits of Size also Controls Form Limits of Size Definition per ASME Y14.5.1M-1994 Exceptions to Rule #1 Size Does Not Control Interrelationship Between Features

Directly Toleranced Dimensions Are Not Clear for Locating Surfaces

Profile Tolerance Is Used to Locate Surfaces Dimension Origin Symbol

Workshop Exercise 2.1

2.4 2.5 2.7 2.8 2.12 2.13 2.14

2.15

System of Limits and Fits

Limits and Fits Tables

Workshop Exercise 2.2 4

2.17 2.18 2.19

Unit 3 - How the Geometric System Works Plus Minus Tolerancing to Locate Surfaces Is Not Clear Comparison - Position Tolerance vs. Plus/Minus Tolerance How the Geometric Tolerancing System Works Geometric Tolerancing Applied to the Hole Bar Selecting Size and Position Tolerances along with Feature Modifiers Effect of Regardless of Feature Size Effect of Maximum Material Condition Modifier

Effect of Zero Tolerancing at MMC

3.1 3.2 3.3 3.4 3.6 3.8 3.9 3.10

3.11

Effect of Least Material Condition Modifier Modifier Rules - Applicability of MMC, LMC, RFS, MMB, LMB, RMB Modifier Rules - Former Practices General Rules - Geo Tol Applied to Threads, Gears and Splines When to use MMC, LMC, RFS Modifiers - Guidelines MMC Modifier Application for Clearance

LMC Modifier Application for Location

3.12 3.13 3.15 3.16 3.17 3.19

3.20

RFS Application for Location Workshop Exercise 3.1 Workshop Exercise 3.2 Workshop Exercise 3.3 Unit 4 : Position Verification

Introduction to Position Verification Position - Hole Verification at MMC Position - Hole Verification at LMC

3.21 3.23 3.24 3.25 4.1

4.2 4.3 4.4

Class Exercise - Position Verification, Inch Class Exercise - Position Verification, Metric

Position Conversion Table - Inch Position Conversion Table - Metric

4.5 4.6

4.7 4.8

Workshop Exercise 4.1 - Metric

Workshop Exercise- 4.2 - Metric

4.9

4.10

Workshop Exercise 4.3 - Metric

Workshop Exercise 4.4 - Metric

4.11

4.12

Workshop Exercise 4.5 - Metric

Workshop Exercise 4.6 - Inch

4.13

4.14

Workshop Exercise 4.7 - Inch

Workshop Exercise 4.8 - Inch Workshop Exercise 4.9 - Inch

4.15

4.16 4.17

Paper Gage Concept Paper Gage Evaluation of 4.1 Paper Gage Cartesian and Polar Coordinate

Unit 5 : Product Plans and Virtual Condition

4.18 4.19 4.21

5.1

Geometric Tolerancing Application - The Hub Three Plans for a Quality Product Sample Operation Sheet

Sample Quality Dimensional Measurement Plan

5.2 5.3 5.5

5.6

5

Virtual Condition Virtual Condition - Multiple Feature Control Frames

Workshop Exercise 5.1

5.7 5.8

5.9

Workshop Exercise 5.2/5.3 Unit 6 : The Datum Reference Frame Datum Reference Frame (DRF) and Degrees of Freedom (DOF) Datum Reference Frame Simulators Right Hand Rule

Positioning Parts in a Datum Reference Frame

5.10 6.1 6.2 6.4 6.5

6.6

Implied Datums are not Clear Datum Reference Frame Used in Engineering Datum Reference Frame Used in Manufacturing and Inspection Theoretical Datum Feature Simulators Datum Feature Simulator Requirements Physical Datum Feature Simulators Establishing Datums from Primary Planar Surfaces Planar Surfaces as Primary Datum Features Workshop Exercise 6.1 Establishing Datums from Primary Datum Features of Size at RMB Datum Feature Symbol Placement is Important

Partial Datum Features and Multiple Datum Features

6.8 6.10 6.11 6.12 6.13 6.14 6.15 6.16 6.17 6.18 6.21

6.22

Workshop Exercise 6.2

Degrees of Freedom - Primary Datum Feature at RMB

6.23

6.24

Degrees of Freedom Table - Primary Datum Feature at RMB Workshop Exercise 6.3 Establishing a DRF - Planar Surfaces Establishing a DRF - Plane, Axis, Plane Establishing a DRF - Axis, Plane, Center Plane Establishing a DRF - Plane, Plane, Axis Datum Feature Precedence and Modifiers

Constrained Degrees of Freedom

6.25 6.27 6.28 6.29 6.30 6.31 6.32

6.33

Workshop Exercise 6.4 Unit 7: Datum Feature Modifiers

Datum Feature Modifiers - MMB, LMB and RMB Development of a DRF at RMB Development of a DRF at MMB Comparison Between Datum Feature Modifiers RMB and MMB

6.34 7.1

7.2 7.4

7.7

7.9

Calculating Boundaries for Datum Features at MMB

Workshop Exercise 7.1 - Calculating Datum Feature Boundaries

7.10

7.11

Simultaneous Requirement Implied as Default Separate Requirement Must be Specified

Secondary Datum Feature at MMB - Paper Gage Tertiary Datum Feature at MMB - Paper Gage

7.12 7.13

7.14 7.16

Workshop Exercise 7.2 - Calculating Allowable Datum Feature Shift

7.18

6

Unit 8 : The Datum Reference Frame II - Targets and Irregular Surfaces

Inclined Datum Feature Contoured Datum Feature Datum Center planes

8.1

8.2 8.4 8.5

Datum Targets - Definitions

Datum Targets - Turbine Blade

8.6

8.8

Datum Targets - Hood Panel Outer Datum Targets - Pillow Block Datum Targets - Casting to Machining Calculations Datum Targets - Movable Datum Target 1 Datum Targets - Movable Datum Target 2 Workshop Exercise 8.1 Workshop Exercise 8.2

Unit 9 : The Datum Reference Frame III - Advanced Concepts

8.10 8.12 8.15 8.16 8.17 8.18 8.19

9.1

Two Holes as a Datum Feature Hole and Slot as Datum Features Pattern of Holes as a Datum Feature Paper Gage Evaluation Coaxial Holes as a Datum Feature Rotational Control - Opposed Surface Rotational Control - Opposed Contoured Surface Rotational Control - Unopposed Planar Surface Rotational Control - Unopposed Planar Surface at MMB and RMB Rotational Control - Unopposed Planar Surface at Basic Irregular Datum Feature / Workshop Exercise 9.1 Rotational Control - Slot at RMB with & without Translation Modifier Translation Modifier Customized Datum Reference Frame - Introduction Customized Datum Reference Frame - Square Hole and Slot

Customized Datum Reference Frame - 4 Datum Feature References

9.2 9.4 9.5 9.7 9.9 9.10 9.11 9.12 9.13 9.14 9.15 9.16 9.17 9.18 9.19

9.20

Multiple Datum Reference Frames

Establishing a Relationship Between Two DRF Workshop Exercise 9.2 - Customized Datum Reference Frame

9.21

9.22 9.24

Unit 10 : Form Tolerances Overview Flatness Flatness Verification Flatness Design Considerations Flatness Per Unit Area Two Types of Straightness and Two Types of Flatness

Design Considerations

10.1 10.2 10.3 10.4 10.5 10.6 10.7

10.8

Straightness - Line Elements on a Flat Surface Straightness - Line Elements in Two Directions Straightness - Line Elements on a Pin Straightness of an Axis

10.9 10.10 10.11 10.12 7

Flatness of a Median Plane Circularity (Roundness) Cylindricity

More on Circularity and Cylindricity

Average Diameter Workshop Exercise 10.1 Unit 11 : Orientation Tolerances Overview Parallelism on a Surface Parallelism Application Angularity on a Surface Angularity Verification Perpendicularity on a Surface Perpendicularity with Two Datum Feature References Orientation of a Hole Orientation to a Pattern of Holes Perpendicularity Line Elements (2D)

Parallelism Tangent Plane

10.13 10.14 10.15 10.16 10.16 10.17

Perpendicularity of Zero at MMC Workshop Exercise 11.1 Unit 12 : Profile Tolerances Overview Bilateral Unilateral Unilateral Unequal Unilateral Clarification Profile Per Unit Area Profile of a Line Cam Wheel Application Profile Inspection Reporting Fuel Line Bracket Assembly Fuel Line Bracket Fuel Line Clamp

Workshop Exercise 12.1

Hat Bracket Application Workshop Exercise 12.2 Profile to Sharp Corner ASME Profile to Sharp Corner ISO Profile Non-Uniform Composite Profile Composite Profile - One Datum Feature Composite Profile - Two Datum Features

Composite Profile - Irregular Feature

Profile - Coplanarity Profile - Multiple Controls 8

12.1 12.2 12.4 12.5 12.6 12.7 12.8 12.9 12.10 12.11 12.12 12.12 12.13 12.14 12.15 12.17 12.18 12.19 12.20 12.21 12.22 12.23 12.24 12.26 12.27

Radius, Controlled Radius, Profiled Radius Non-Rigid Parts - Restrained Condition Workshop Exercise 12.3 - Profile Stack Workshop Exercise 12.4 - Composite Profile Stack Unit 13 : Position Tolerances Overview Axis Versus Surface Interpretation

Position - Cylindrical Tolerance Zone Position - Rectangular Tolerance Zone

12.28 12.29 12.32 12.33 13.1 13.2 13.3

13.4 13.6

Position - Spherical Tolerance Zone

Position - Conical Tolerance Zone

13.7

13.8

Position Boundary Composite Tolerancing is Special Composite vs. Two Single Segments Composite Position - One Datum Feature Reference Composite Position - Two Datum Feature References

Position - Two Single Segments Composite Position - Paper Gage Verification

13.9 13.11 13.12 13.14 13.16

13.18 13.20

Composite Position Application - Coaxial Holes on a Hinge Continuous Feature

Datum Features Referenced Individually

13.22 13.24

13.25

Three Single Segments - Rotational Control Workshop Exercise 13.1 Unit 14 : Coaxial Tolerances Multiple Datum Features A-B Coaxial Tolerances - Overview Runout Tolerances Overview Circular Runout Total Runout Runout Applied to Flat Surfaces Application Position Coaxial Features Application Profile Coaxial Features Application Coaxial Tolerances Review

Concentricity and Symmetry Tolerances

13.26 13.27 14.1 14.2 14.4 14.5 14.5 14.6 14.7 14.8 14.9 14.10 14.11 14.12 14.13 14.14 14.15 14.15 14.16 14.17 14.18 14.19 14.20

Overview Concentricity Concentricity Verification

Symmetry Position Instead of Symmetry Workshop Exercise 14.1

9

Unit 15 : Fastener Formulas and Screw Threads Floating Fastener Formula Fixed Fastener Formula

Projected Tolerance Zone Workshop Exercise 15.1 - Shims

Workshop Exercise 15.2 - Reinforcement Unit 16 : Boundaries Overview Boundaries RFS - Internal/External

Boundaries MMC - Internal/External

15.1 15.2 15.4 15.6 15.8 15.9 16.1 16.2 16.4

16.5

Boundaries LMC - Internal/External

Workshop Exercise 16.1 - Boundary Calculations RFS

16.6

16.7

Workshop Exercise 16.2 - Boundary Calculations MMC Workshop Exercise 16.3 - Boundary Calculations LMC Minimum Wall Calculations IB and OB Stack-up Calculations Workshop Exercise 16.4 - IB and OB Workshop Exercise 16.5 - Plate Workshop Exercise 16.6 - What is Wrong? Unit 17 : Application Exercises Workshop Exercise 17.1 - Corner Bracket

Workshop Exercise 17.2 - Flange Bearing

16.10 16.11 16.12 16.13 16.14 16.15 16.16 17.1 17.2

17.3

Workshop Exercise 17.3 - Powder Case

Workshop Exercise 17.4 - Link

17.4

17.5

Appendix A Principle Changes, Improvements and Enhancements in the ASME Y14.5-2009 from the earlier ASME Y14.5M-1994 standard.

Al

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