Basics Of Tolerance Stack-Up Analysis And Fits With Gd&T

Learn About Tolerances Stack-up Analysis and about fits in engineering with multiple examples with GD&T for mechanical

What you'll learn
The Basics of Limits and Fits
How to do a simple Tolerance stackup analysis
How to do a Tolerance stackup analysis with GD&T
What is statistical tolerancing
How to Perform 1 D Tolerance stack up analysis
Requirements
Basic understanding of engineering design
One section requires understanding of Basics of GD&T - Concepts like Virtual condition , boudnaries, Material modifiers, Datum Shift
Description
Understanding Tolerances and tolerancing schemes is a very important part of Mechanical design .In most cases Tolerances are directly detrimental to the functional performance of a mechanical product.This course attempts to cover the key concepts in tolerance stackup , limits, fits and statistical tolerancing with examples . Tolerance stackup analyses are critical in applications where small changes in dimension of parts can have heavy consequences.What we will cover in the course?What is tolerance? What are sources of variation ?What are Fits , the nomenclature, types and Tolerance zonesHow to decode and interpret a Fit specification and convert it into limitsHow to Define a specification of a Fit for a specific applicationHow to do a simple tolerance stackup ? Generic procedure and factors to be considered?How to develop Loop Diagrams in Stackup ?Assembly shift in Tolerance analysisHow is assembly shift calculated Stackup with GD&T How to find Boundary conditions accounting for size and positional variationsHow to derive the individual specifications in tolerance tableHow to develop the envelopes for GD&T controlsStatistical TolerancingWhy Statistical techniques are used? What is normal distribution What is difference between worst case and statistical analysisWhat is Process capability indexThe course is structured to provide learning  in a methodical step by step way with clear explanations . Core Learning outcome is to provide a strong foundation concept in Tolerance analyses for mechanical Engineers in design and manufacturing.

Overview

Section 1: Introduction

Lecture 1 Introduction to course

Lecture 2 What is Tolerance

Lecture 3 Accuracy and Precision

Lecture 4 General Tolerance Ranges for Manufacturing processes

Lecture 5 Importance of Tolerancing in Mechanical design - A simple example

Lecture 6 Common factors to be considered in tolerancing

Lecture 7 Sources of variation which contribute to tolerance

Lecture 8 Ways of representing tolerance and converting to equal Bilateral tolerance

Section 2: System of Fits

Lecture 9 What are Fits and Types

Lecture 10 Nomenclature

Lecture 11 Types of Fits and their tolerance zones

Lecture 12 What is Shaft basis and Hole basis

Lecture 13 How to Define or Decode fit specifications

Lecture 14 Deviations and Grades for various scenario of fits

Lecture 15 Example 1 - H11c11

Lecture 16 Example 2

Lecture 17 Example 3

Lecture 18 Example 4

Lecture 19 Preferred fits

Lecture 20 Selecting a Fit for Application

Section 3: Tolerance Stackup Analysis

Lecture 21 What is tolerance analysis

Lecture 22 Example of Car Body panel gap

Lecture 23 Reasons for Tolerance stackup analysis

Lecture 24 Factors in Tolerance stackup and generic process

Lecture 25 Simple example 1

Lecture 26 Example 2

Lecture 27 Exercise - Stack of coins

Lecture 28 Assembly Shift

Lecture 29 Significance of Assembly shift

Lecture 30 Using Slots and Oversized holes for adjustment

Lecture 31 Example 3

Lecture 32 Example 4

Lecture 33 Example 5 part 1

Lecture 34 Example 5 Part 2

Lecture 35 Practice Problem - Shock absorber stack

Section 4: Tolerance stackup Analysis - With GD&T

Lecture 36 With GD&T Example 1

Lecture 37 With GD&T Example 1 Part 2

Lecture 38 With GD&T Example 1 Part 3

Lecture 39 With GD&T Example 2 Part 1

Lecture 40 With GD&T Example 2 Part 2

Lecture 41 With GD&T Intra part Example 3 Part 1

Lecture 42 With GD&T Intra part Example 3 Part 2

Lecture 43 With GD&T Intra part Example 4 Part 1

Lecture 44 With GD&T Intra part Example 4 Part 2

Section 5: Statistical Tolerancing

Lecture 45 Drawbacks of Worst case analysis

Lecture 46 Normal Distribution

Lecture 47 Process capability Part 1

Lecture 48 Process capability Index Part 2

Lecture 49 What makes a process capable?

Lecture 50 Root Sum Squared method

Lecture 51 Statistical tolerancing vs Worst case

Section 6: Test your Knowledge

Section 7: Bonus Section

Lecture 52 Bonus : More resources for learning Mechanical engineering and design

Graduate students in Engineering,Working Design professionals in Engineering industry