Geotol GD&T Core Concepts Online Training outline
Unit 1: Introduction:
General overview, geometric characteristic symbols, rules, terms and definitions; Introduction to measurement principles, open set-up and Coordinate Measuring Machine (CMM)
Unit 2: Limits of Size:
Rule #1; Features with & without size; MMC and LMC; Why plus/minus tolerancing is confusing; The need for geometric tolerancing
Unit 3: How the Geometric System Works:
Introduction to the datum reference frame; Basic dimensions; Introduction to Position Tolerancing; Square vs Round tolerance zones; MMC, LMC, RFS modifiers; Introduction to Profile Tolerancing
Unit 4: The Datum Reference Frame:
Datums, datum features, true geometric counterparts; Holes, slots, shafts, tabs, widths as datum features; Connection between the theory and physical; Datum feature precedence; Constraining the 6 degrees of freedom; True geometric counterpart requirements; Partial datum features
Unit 5: Product Plans and Position Tolerancing Verification:
Difference between the product drawing, manufacturing process plan, and dimensional measurement plan; The engineering specification versus the inspection method; Verifying position with MMC and RFS modifiers; Intro to paper gage
Unit 6: Orientation Tolerances:
Perpendicularity, Parallelism, Angularity; Orientation as a refinement of location; Inspection reporting
