Geometric Dimensioning & Tolerancing : Advanced concepts

Learn to interpret and apply advanced concepts of GD&T on patterns, slots, irregular parts and more

Topics covered :

What you’ll learn

  • Geometric Tolerancing of Patterns of features.
  • Using Composite position control for controlling patterns and features.
  • How to use Datum targets on irregular shape parts.
  • Projected Tolerance zone.
  • Methodology of tolerancing slots.
  • Comparison of composite control vs multi segment control.
  • Refinement of orientation of form controls.

Course Content

  • Introduction –> 2 lectures • 9min.
  • Profile tolerance – in depth –> 4 lectures • 14min.
  • Patterns –> 5 lectures • 22min.
  • Inclined datum and Auxiliary datum –> 3 lectures • 10min.
  • Refinement of Profile and Position controls –> 2 lectures • 7min.
  • Simultaneous Requirements –> 9 lectures • 34min.
  • Composite Position control –> 11 lectures • 50min.
  • Composite Profile control –> 2 lectures • 5min.
  • Slot Control –> 4 lectures • 20min.
  • Multiple Datum Feature datum –> 3 lectures • 7min.
  • Zero Position tolerance at MMC concept –> 2 lectures • 9min.
  • Datum Targets –> 8 lectures • 25min.
  • Projected Tolerance zone –> 2 lectures • 4min.
  • Bonus Section –> 1 lecture • 1min.

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Requirements

  • The course deals with advanced concepts and requires good understanding of Basics of GD&T.
  • Symbols, Datums, Modifiers, virtual conditions , concept of size, form orientation and position.

Topics covered :

  • Profile tolerance in depth
    • Relimited control of profile
    • Biased tolerance zone
    • Application of profile on Flange part
  • How are Patterns toleranced and what does the callout mean with multiple examples
  • Using Patterns as datums
  • Refinement of Orientation and Form in Position and Profile tolerance
  • Auxiliary datums – Datums apart from the datum reference frame.
  • Inclined datum features – two examples
  • Concept of simultaneous requirements- What does it mean ? What does it imply?
  • Difference between simultaneous and seperate requirements
  • Gauging with simultaneous requirements
  • Gauging with seperate requirements
  • Composite position control
  • Composite vs Multi segment position control
  • Composite Gauging
  • Composite Profile control vs multi segment profile control
  • Tolerancing of slots – Methods and their differences
  • Using slots as Datums
  • Datum Targets – Why use them ? When to use them ? How to use them ?
  • Inspection with datum targets
  • What is Zero positional tolerancing at MMC? with example and why use it?
  • What is Projected tolerance zone ? with example and why use it?

All the lectures are in form of

  • Short “to the point ” explanations of concepts
  • Focus on practical examples
  • Learn the why and why not along with comparisons

Pre-requisites required:

  • Understanding of Basic concepts of GD&T like
    • Datums
    • Modifiers and material conditions
    • Tolerance zones
    • Symbol meanings
    • Concept of Size, Form , orientation, and location
    • Virtual conditions