Measuring & Gaging Geometric Tolerances

COURSE OUTLINE

Purpose

The purpose of this course is to focus on methods and techniques for inspecting geometric tolerances.

Attendees

Shop Personnel, Inspectors, and Quality Technicians / Engineers

Course Length

24 hours Materials: Book or Participant’s Guide

Instructor

Gary K. Griffith

Pre-Requisites

GDT Training

OUTLINE

FORM TOLERANCES

  • Flatness
    • Contact methods
    • Non-contact methods
  • Straightness
    • Differential measurements
    • Direct measurements
  • Circularity (Roundness)
    • Precision Spindles
    • V-Block techniques
  • Cylindricity
    • Precision spindles
    • Open set ups
    • Verification

RUNOUT TOLERANCES

  • Circular & Total Runout
  • Circular Runout Measurement
  • Total Runout Measurement

ORIENTATION TOLERANCES

  • Review of datums
  • Secondary Alignment datums
  • Parallelism Measurement
  • Perpendicularity Measurement
  • Angularity Measurement

PROFILE TOLERANCES

  • Bilateral/Unilateral zones
  • Profile of a Line Measurement
  • Profile of a Surface Measurement
  • Profile—Coplanar Surfaces

LOCATION TOLERANCES

  • Position tolerances
  • Introduction & Basic dimensions
  • Position Vs Coordinates
  • Conversion
  • Bonus tolerances
  • Functional gages
  • Hole Patterns
    • No datum
    • Primary datum only
    • Three datums
  • Composite tolerances
  • Functional Gaging
  • Bonus tolerance
  • Base line & Chain dimensioning
  • Position Coaxial
  • Zero tolerance at MMC
  • Position at LMC
  • Bi-Directional Position
  • Position -Size Datums
  • CMM measurements
  • Graphical Inspection Analysis
  • Projected Tolerance Zones
  • Concentricity
    • Conc. versus Runout
  • Measuring methods
  • Verifying concentricity
  • Symmetry