About this Event
MATERIALS
Course slides supplied by University of Hartford
COURSE PREREQUISITE(S)
PW Certificate Course on Fundamentals of Manufacturing Metrology OR Familiarity with the course contents
COURSE OVERVIEW
GD&T is a system for defining and communicating engineering tolerances by using a symbolic language on engineering drawings that describe nominal (theoretically perfect) geometry of controlled features, as well as their allowable variation in size, other geometrical characteristics (form, orientation, location) and variation between features. Per this language, dimensions are selected to suit function and mating relationship of a part and are subject to a unique interpretation. The course focuses on the fundamental understanding of the 14 tolerances and their inspection techniques, concepts of datums, features, feature modifiers, datum modifiers, datum boundaries, and design of functional gauging. Practical aspects of different call-outs are discussed with opportunity for hands-on experience.
TARGET AUDIENCE
Managers, Engineers, Technicians Mechanical Design/Product Definition
Aerodynamics
Metrology
Structures & Dynamics
Manufacturing
Quality Assurance
DETAILED AGENDA
Review of Fundamentals of GD&T
Drawing Rules, Inch/Metric Dimensioning Units, Angular Units, Features and Features of Size, Datums, Terms used in GD&T, Bonus Tolerance, Mathematical Definitions and Inspection Techniques of 14 Geometric Characteristic Symbols, additional symbols used in GD&T
Form – Flatness, Straightness, Circularity, Cylindricity, Rule#1
Orientation – Perpendicularity, Parallelism, Angularity
Location – Position, Symmetry, Concentricity, Coaxiality
Runout – Circular Runout, Total Runout
Profile – Profile of a Line, Profile of a Surface
Hands-on laboratory exercise
In-class exercises 1, 2, 3, 4
Datum Feature Selection Criteria, Understanding feature modifier for bonus tolerancing, Worst-case inner and outer boundaries for internal and external features of size, Virtual and Resultant Conditions, 3-2-1 Principle for Datums at RMB, Effect of datum order of precedence at RMB
In-class exercises 5, 6
Design of functional gauge for feature MMC modifier with RMB, Changes in functional gauge design based on order of precedence of datums at RMB, Datum boundary with modifiers, MMB and LMB, calculation of datum shift tolerances, design of functional gauges with feature modifier, MMB, LMB and different order of precedence of datums.
Hands-on laboratory exercise
In-class exercises 7, 8
Calculations of minimum/Maximum wall thicknesses, feature-to-feature distances, Zero Positional Tolerancing, Multiple Patterns of Features, Datum Targets and Irregular Surfaces, Fastener formulas (floating and fixed) and screw threads, projected tolerance zone
In-class exercises 9, 10, 11
1D and 2D Stack-up analyses for assembly purposes, worst-case arithmetic tolerancing, statistical tolerancing,
In-class exercise 12, Application Exercises (including flexible parts)
Event Venue & Nearby Stays
University of Hartford, College of Engineering, Technology, and Architecture, 200 Bloomfield Avenue, West Hartford, United States
USD 1975.93
