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Geometric Dimensioning and Tolerancing Training: Level Two

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Geometric Dimensioning and Tolerancing Training: Level Two

Course Description

A three day training course intended for anyone who needs to understand the theory and practice of ASME Y14.5 – 2018 Geometric Dimensioning & Tolerancing (GD&T).   Students should have some knowledge of interpreting technical drawings or inspection experience.  Class will alternate between a power point presentation, class discussion and practice exercises. Question and answer sessions will take place during the course to ensure knowledge and understanding.  Practical examples and workbook exercises provide practice in interpreting and analyzing GD&T.

Geometric Dimensioning and Tolerancing Training: Level Two

Availability

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Aims & Objectives

  • Teach a consistent, systematic approach
  • Show that GD&T helps insure parts or assemblies will fit together
  • Demonstrate how datums simulate conditions of use
  • Provide robust knowledge of GD&T tolerance characteristics (symbols)
  • Work through practical examples
  • Enable confident use of GD&T on the job

Benefits to the learner

  • Understand how datums determine measurement setup and relate to coordinate systems
  • Understand tolerance zone shapes and frameworks
  • Identify the difference between the GD&T categories
  • Recognize the GD&T characteristics (tolerance types)
  • Be able to read Feature Control Frames
  • Associate inspection equipment & procedures
  • Perform tolerance calculations
  • Improve communication
  • Avoid common mistakes

Course Outline

Measurement Fundamentals

Introduction: GD&T and Drawing Practice

GD&T Related Principles

  • Standards and governing organizations
  • Inspection Conditions
    • Temperature
    • Constrained vs Free State
  • Conformance
    • Measurement Uncertainty
  • Feature Control Frames
  • Datums
  • Basic dimensions
  • Limits on dimensions and tolerances
  • Controlled Radius

Geometric Characteristics

Tolerances of Form

  • Straightness
  • Flatness
  • Roundness
  • Cylindricity
  • Tolerances per unit length

Tolerances of Orientation

  • Parallelism
  • Perpendicularity
  • Angularity

Tolerances of Location

  • Position
  • Position with Feature MMC
  • Position with Datum MMC
  • Position with LMC
  • Projected Tolerance Zones
  • Concentricity
  • Symmetry

Tolerances of Runout

  • Circular Runout
  • Total Runout

Tolerances of Profile

  • Profile of a line
  • Profile of a surface

Composite Tolerances of Location

  • Composite Tolerance Frames
  • Multiple Single Frames

Coordinate Measurement and GD&T

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East Coast Metrology, LLC (recognized as ECM – Global Measurement Solutions), is a privately owned company delivering quality dimensional metrology, 3D Scanning, and engineering support services to a diverse range of industries at a global level...

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