Geometric Dimensioning and Tolerancing (GD&T) : Basics
4.2 (1,234 ratings)
Course Ratings are calculated from individual students’ ratings and a variety of other signals, like age of rating and reliability, to ensure that they reflect course quality fairly and accurately.
3,866 students enrolled

Geometric Dimensioning and Tolerancing (GD&T) : Basics

Learn the essential concepts of GD&T , for mechanical and manufacturing engineers with practice exercises
4.2 (1,234 ratings)
Course Ratings are calculated from individual students’ ratings and a variety of other signals, like age of rating and reliability, to ensure that they reflect course quality fairly and accurately.
3,866 students enrolled
Created by Mufaddal Rasheed
Last updated 6/2020
English
English [Auto]
Current price: $44.99 Original price: $64.99 Discount: 31% off
5 hours left at this price!
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This course includes
  • 4.5 hours on-demand video
  • 11 articles
  • 12 downloadable resources
  • Full lifetime access
  • Access on mobile and TV
  • Certificate of Completion
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What you'll learn
  • The basic concepts of Geometric Dimensioning and tolerancing
  • How to apply GD&T to a part drawing
  • Why is GD&T needed and what are its advantages over the traditional method
  • Practice what is learnt through thought provoking exercises with multiple problem sets in the Practice section
  • Reinforce concepts with 50+ Questions
  • Learn from a seasoned design engineer with real world experience in designing chassis systems
Requirements
  • Basic knowledge of mechanical engineering
  • Basic awareness on engineering design
  • Basic knowledge of making 2D drawings
Description

The course is designed in a way to build from the basic concepts of engineering drawing towards more complex concepts.  It starts with explaining the importance of an engineering drawing and going on to explain why GD&T the need has arisen and then a deep dive into the concepts of GD&T

If you are a total beginner the course will build progressively in terms of concepts to capture the core tenets of GD&T.

If you are a seasoned professional then the latter portions of the course will be useful to you

Geometric dimensioning and tolerancing is a body of knowledge and a symbolic language used to communicate design intent on an engineering drawing for manufacturing and inspection.

In this course you will learn , how exactly are the core concepts of GD&T built and how they are applied to drawings with multiple examples .

You will learn and appreciate the importance of the language over the traditional way of dimensioning and learn the possibilities of controlling the parts' variations using various combinations of symbols and controls.

The course will cover the following topics

  • Overall perspective of what an engineering drawing is and why it is important.

  • The Need for GD&T  then moving towards the introductory concepts of GD&T

  • A comprehensive comparison of Traditional method of tolerancing vs GD&T

  • A detailed look at Datums the most important concept in GD&T , How are they created? How are they applied? and what do they mean on the drawing?

  • A detailed look at Bonus tolerance and concept of virtual condition which lays a key role in Mating parts.

  • Explanation of Symbols and their inspection methods

    • Form

      • Straightness

      • Flatness

      • Circularity and cylindricity

    • Orientation

      • Angularity

      • Perpendicularity

      • Parallelism

    • Location

      • Position

      • Symmetry and Concentricity

    • Runout

    • Profile

  • Finally we will have a look at the concept of Datum feature modifiers or Datum shift.

Each section has a Quiz and you will find practice exercises to practice your GD&T skills .

The course is designed in such a way that each and every point is captured as a sub topic with multiple short lectures which are to the point with condensed information.

At the end of the course, take a quiz with 30 insightful questions which will test your conceptual understanding of the subject.


Who this course is for:
  • Aspiring Mechanical design engineering students looking to learn the Subject of GD&T
  • Anyone from the manufacturing industry wanting to understand the core concepts of GD&T
  • Working design engineers who want to sharpen their engineering design knowledge and skills
Course content
Expand all 117 lectures 04:18:22
+ Introduction
16 lectures 42:54
The Three Major stakeholders
01:39
Cost Of Drawing Error
02:28
3D Model to 2D representation
01:26
What is Dimensioning?
01:59
Concept of Tolerance
03:02
Ways of representing tolerance
01:55
Types of Fits and Selection
05:25
Drawing with Tolerances
03:19
Engineering Drawing Template
02:40
Need from the Drawing
04:09
What is a Feature?
01:42
How is Inspection of parts done?
05:00
Quiz on Basics
11 questions
+ Need for GD&T.
5 lectures 12:41
Issue with Traditional tolerancing - No Relative control of features
02:17
Issue with Traditional tolerancing - Ambiguity in Inspection
03:00
Issue with Traditional tolerancing - No Assembly consideration
01:45
Issue with Traditional tolerancing - No control of Profiles
02:18
Quiz : Why GD&T ?
3 questions
+ Introductory Concepts of GD&T
11 lectures 32:16
Origins of GD&T
01:54
Size, Form, Orientation and Location
05:14
What is GD&T ? What are the important concepts?
02:35
The Feature control Frame
03:55
Feature of Size
02:15
Identifying Feature of Size
02:52
Comparison between GD&t and non GD&T
03:18
Material Conditions
02:00
Rule 1
04:07
Introductory concepts
12 questions
+ Datums
13 lectures 34:06
Datums : Introduction
01:11
How Datums are Created
05:27
Datum and Datum Feature , Terminiology
02:40
Datum Reference Frame
02:12
Datum Reference frame - 2 Cylindrical feature and 1 Planar feature
02:48
Datum Reference Frame - 1 Cylindrical and 2 Planar feature
02:45
Selection of Datums
04:10
Simple Process of Applying Datums
02:13
Tolerance Zone
02:25
How GD&T Helps Inspection?
02:05
Tolerance zone Comparison for Position control of Hole
02:48
Comparison Summary
01:21
Inspection Requirements
02:01
Datums
10 questions
+ Bonus tolerance and Virtual condition
15 lectures 32:36
Material Modifiers on Geometric tolerance
03:07
Rule #2
00:18
Material Modifiers Example
02:57
Shaft Position Tolerance Brief
01:14
Bonus Tolerance calculation- Shaft
04:07
Hole position tolerance
01:39
Bonus tolerance Hole
01:54
Virtual Condition of Shaft
02:35
Virtual Condition of Hole
02:20
Condition for Successful Assembly
00:51
Functional Gauging using Virtual condition
01:34
Internal and External Boundaries
00:58
Resultant Condition External Feature of Size at MMC
02:39
Resultant Condition Internal Feature of Size at MMC
02:07
Actual Mating Envelope
04:16
MMC, Virtual conditions
6 questions
+ Form Control
19 lectures 41:02
Introduction to Planar Straightness and its inspection
03:37
Straightness of Cylindrical surface
02:49
Straightness of Axis and comparison
03:59
Inspection of Axis straightness
02:11
Material modifier in Axis straightness
02:23
Inspecting Axis straightness with modifier using Functional Gauge
01:57
Inspecting Axis straightness
01:42
Applications of Straightness control
02:10
Straightness applied differently in two directions
01:23
Flatness and its Inspection
03:46
How Flatness saves money.
01:40
Rule 1 and Flatness
00:51
Summary of Flatness control
02:21
Inspecting Circularity
01:37
Cylindricity
01:38
Inspecting Cylindricity
01:18
Points on cylindricity and circularity
01:51
Difference between Surface straightness control and cylindricity
01:37
Form control
8 questions
+ Orientation control
8 lectures 15:10
Angularity control
01:59
Angularity Inspection
02:07
Perpendicularity
01:20
Inspecting Perpendicularity
02:19
Perpendicularity of Feature of size
02:28
Parallelism
01:21
Inspection of Parallelism
01:03
Parallelism vs Flatness
02:33
Orientation control
5 questions
+ Location control
4 lectures 09:44
Position Control and its Inspection
03:25
Comparison between Perpendicularity and position
02:17
Concentricity
01:38
Symmetry
02:24
Location control
5 questions
+ Runout
7 lectures 12:50
Circular Runout
02:34
Circular Runout on Perpendicular Face
01:57
Total Runout
01:54
Total Runout on perpendicular face
01:43
Applications of Runout
02:31
Runout controls both Concentricity and Cylindricity
02:08
Example of a Wheel rim
00:03
Runout
6 questions
+ Profile
4 lectures 05:51
Profile of a Line
01:56
Profile of a surface and its Inspection
02:53
Points on Profile tolerance
00:55
Profile Control variation with Datums
00:07
Profile
5 questions