Measuring & Gaging Geometric Tolerances
Course Outline (24 Hours)
  • ANSI Y14.5 Standard
    A. General Rules
    B. Symbols
    C. Modifiers (MMC, RFS, LMC)
    D. Datums
    E. Tolerance Zones
    F. Virtual Condition/Size
  • Form Tolerances
    A. Review
    B. Flatness
    1. Contact methods
    2. Non-contact methods
    C. Straightness
    1. Differential measurements
    2. Direct measurements
    3. Functional Gaging
    D. Circularity (Roundness)
    1. Precision Spindles
    2. V-Block techniques
    3. Cautions with diametrical tools
    E. Cylindricity
    1. Precision spindles
    2. Open set ups
    3. Verification
  • Runout Tolerances
    A. Introduction
    B. Circular & Total Runout
    C. Definition of Runout
    D. Circular Runout Measurement
    E. Total Runout Measurement
  • Profile Tolerances
    A. Introduction to Profile
    B. Bilateral/Unilateral zones
    C. Basic dimensions
    D. Profile of a Line Measurement
    E. Profile of a Surface Measurement
    F. Profile Coplanar Surfaces
    G. Conicity control with Profile
  • Location Tolerances
    A. Position tolerances
    1. Introduction & Basic dimensions
    2. Position Vs Coordinates
    3. Conversion
    4. Bonus tolerances
    5. Functional gages
    6. Hole Patterns
    a. No datum
    b. Primary datum only
    c. All three datums
    d. Composite tolerances
    e. Functional Gaging
    f. Bonus tolerance
    g. Base line & Chain dimensioning
    7. Position Coaxial
    8. Zero tolerance at MMC
    9. Position at LMC
    1O. Bi-Directional Position
    11. Position -Size Datums
    12. CMM measurements
    13. Graphical Inspection Analysis
    14. Projected Tolerance Zones
  • Concentricity
    1. Conc. versus Runout
    2. Measuring methods
    3. Verifying concentricity
  • Position (RFS) (Symmetry)
    1. Measurement