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‘NEW RULES’ in GD&T [per ASME Y14.5-2009]

DVD Training Series

James D. Meadows © March, 2009
165 page text/workbook-answerbook and DVD Set
ISBN: 0-9714401-9-0
Publisher Price: $995


‘NEW RULES’ in GD&T [per ASME Y14.5-2009] is based on the ASME Y14.5-2009 Dimensioning and Tolerancing Standard.

This DVD series is a 3 1/2 hour training session where James D. Meadows explains all of the major aspects of his 165-page book ‘NEW RULES’ in GD&T [per ASME Y14.5-2009]. His presentation reflects the new symbology, rule changes and basic principle revisions that took the Y14.5 committee almost 15 years to complete. He shows how to interpret design drawings and CAD representations of product definitions that use the concepts that have changed from the ASME Y14.5M-1994 to ASME Y14.5-2009 Standard. He explains each rule and symbol change and shows how to apply and interpret the new Y14.5 practices that will allow

dimensioning and tolerancing professionals to express  their design requirements more clearly. He tells how the 
changes came to be and shows where they may be applied for the best results to products. Mr. Meadows relates case histories from industry where these new concepts would been helpful had they been available. He tells of instances where these “NEW RULES” could have prevented problems that occurred in a variety of product lines. The results of sitting through this DVD training series could be that: product representations are able to be more specific in conveying tolerancing needs, products can be more easily manufactured, and appropriate inspection techniques are clarified.
This ‘NEW RULES’ in GD&T [per ASME Y14.5-2009] DVD training series and its accompanying text/workbook were created to highlight and explain in detail the revised concepts covered in ASME Y14.5-2009 as well as to explain some of the more difficult and advanced concepts allowed by, but perhaps not thoroughly explained, in the previous Y14.5 standard. The “NEW RULES” DVD series and 165-page text/workbook are not meant to replace the 574 page textbook by James D. Meadows entitled Geometric Dimensioning and Tolerancing - Applications, Analysis & Measurement [per ASME Y14.5-2009] but, instead, to showcase only the topics and symbology that have changed from Y14.5M-1994 to Y14.5-2009.
‘NEW RULES’ in GD&T DVD Training Series and Accompanying Text-Workbook/Answerbook Contents:
New Symbols
A Few Basic Definitions, Formulas & Guidelines
New Rule Regarding the Use of the  Symbol
New Terms for Existing Concepts: MMB, LMB and RMB
Derived Median Plane and Derived Medial Line
Actual Mating Envelope
New Alternative Practice regarding the Use of the Angularity Symbol
New General Rules
Theoretical (Perfect Datum Feature Simulators
‘Perfect Form at MMC is Required for All Rigid Features’ gets a New Exception
Circularity to Control Spherical Diameters
Unilateral or Unequal Symbol
New Symbol for Profile of a Surface All-Over Tolerance Zones
Profile of a Surface All-Over Control Illustration of the Tolerance Zone Configuration
An Example of a NON-UNIFORM Profile of a Surface Tolerance Zone
Composite Profile vs. Two Single Segment Profile Controls
An Extension of the Composite Profile of a Surface Concept—Three Levels of Control
Continuous Feature Symbol of Size
New Datum Features and Datum Feature Categories and What They Mean
Conical Datum Feature
Curved Surface as a Datum Feature
Datum Feature Patterns
Designating Degrees of Spacial Freedom
Specifying Degrees of Freedom in the Feature Control Frame
Multiple Datum Reference Frame Identification
Specifying the Desired Datum Material Boundary with a Number
Correct Maximum Material Boundary Calculations
Using the Translation Modifier
Using ‘BASIC’ or its Abbreviation ‘BSC’ in a Feature Control Frame
BSC instead of BASIC
Datum Feature Implied at Regardless of Material Boundary (RMB)
Datum Features Referenced in Maximum Material Boundary (MMB)
More Examples on Different Part Configurations
Irregular Datum Feature of Size
Repetitive Patterns
New Rules and Symbols for Datum Targets
New Rule for Secondary and Tertiary Datum Features of Size
Positional Boundary Concept
Elongated Holes with Bi-directional Positional Tolerances
Positional Boundary Concept used on Hoses, Pipes and Tubes
D-Shaped Holing using Profile and the Positional Boundary Concept
Positional Boundary – Amorphous Workpiece and Gage
Composite Positional Tolerancing vs. Two Single Segment Positional Tolerancing
Composite Tolerancing with Three Levels of Control
Projected Tolerance Zone (A Change or Not a Change?)

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