GD&T Part 3 (Applications)

Course Summary

This course provides realistic design problems where students apply what they have learned while reinforcing their understanding of the fundamentals.

Event Details

8:00am–4:00pm (EST) each day ON-SITE
9:00am–2:00pm (EST) each day VIRTUAL
Customer site: times vary

24 hours: 3 in-person sessions or 5 virtual sessions
Instructor-led classroom training, in-person and in-groups, with opportunities to practice learned skills using prepared examples, live demonstrations, and longer design application exercises.
Available at QSG’s training facilities, virtually, or on-site at your organization

Textbook: Geo Tol Applications and Tolerance Stacks, TCI

Description

This course helps students apply Geometric Dimensioning & Tolerancing (GD&T) to achieve the mating and functional requirements of their parts using a series of case study problems including sheet metal, machined parts, plastic parts, castings etc. Light on lecture and heavy on participation, calculations and exercises are performed individually and in teams. This course provides realistic design problems where students apply what they have learned while reinforcing their understanding of the fundamentals.

Who Should Attend

This course is designed for mechanical design engineers and engineering technicians supporting them in the design of mechanical components and definition of engineering requirements.

Learning Objectives

Through training, participants will learn the following:

  • Calculate linear, axial and orientation stack-ups using parts with geometric tolerancing
  • Perform tolerance stack-up analysis to assign critical tolerances
  • Combine the effects of different types of variation using the concept of boundaries, calculate boundary sizes and use boundaries properly in stack-up analysis
  • Apply the geometric language to real parts
  • Construct the appropriate functional datum reference frames for parts after analyzing the mating requirements
  • Apply datum feature modifiers where appropriate based on analyzing the requirements
  • Apply geometric tolerancing to control features and ensure mating requirements are met

Course Outline

Linear Stack-Ups
Fundamental methodology of tolerance stack-up analysis
Simple analysis using numeric dimensions and tolerances on assemblies

Stack-Ups Involving Profile, Flatness, and Perpendicularity
Linear vector stack-up analysis of components and assemblies with proper consideration of geometric controls

Boundaries
Calculating boundaries for features controlled with position, runout, and profile
RFS, MMC, and LMC feature modifiers
Datum feature modifiers and datum shift
Wall thickness calculations

Axial Stack-Ups via Boundaries
Calculating axial tolerance stack-ups through joints comprising features positioned RFS, at MMC or at LMC, using datum references RMB or at MMB

Orientation
Stack-up analysis affected by parallelism, perpendicularity, and angularity

Application Practice Exercise
Review of functional requirements
Election of appropriate datum reference frame
Qualification of datum features
Selection of appropriate tolerances to achieve mating part and functional requirements

Machined part exercise
Drawing creation for this part
Linear profile stack-up calculation
Axial position stack-up calculation

Two-piece turned part exercise
Drawing creation for two-part assembly
Axial profile stack-up calculation

Three-piece round machined part exercise
Drawing creation for three-part assembly
Axial profile & position stack-up calculation

Two-piece machined part exercise
Drawing creation for two-part assembly
Linear profile stack-up calculation
Axial position stack-up calculation
Axial position & profile stack-up calculation

Seven-piece round machined part exercise
Drawing creation for seven-part assembly
Linear profile stack-up calculation
Axial position stack-up calculation
Axial profile stack-up calculation
Orientation stack-up calculation

Prerequisites

GD&T Part 1 (Basic) and Part 2 (Advanced) or the equivalent

Instructors

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