Mô tả

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.


Bạn sẽ học được gì

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

Yêu cầu

  • Basic knowledge of mechanical engineering
  • Basic awareness on engineering design
  • Basic knowledge of making 2D drawings

Nội dung khoá học

14 sections

Introduction and Basics of Engineering drawing

29 lectures
Introduction
03:37
My Learning journey and a Learning guide to GD&T
11:26
Importance of Engineering Drawing
02:14
The Three Major stakeholders
01:39
Quality of Drawing
01:16
Cost Of Drawing Error
02:28
Examples of Drawing error
02:51
3D Model to 2D representation
01:26
Orthographic Projection of 3D into 2D and 1st angle and 3rd angle projection
08:46
What is Dimensioning?
01:59
Concept of Tolerance
03:02
Ways of representing tolerance
01:55
Fits in Mechanical Assemblies
01:03
Types of Fits and Selection
05:25
Examples of types of fits
03:18
How is Tolerance decided?
12:06
An Example on applying preliminary tolerance to a drawing
09:15
Drawing with Tolerances
03:19
Engineering Drawing Template
02:40
Examples of Engineering drawings
02:06
Need from the Drawing
04:09
What is a Feature?
01:42
Examples on Features and non features
03:29
Dimension types on drawings
04:24
Exercise : Categorize the dimensions Size vs location
04:44
How is Inspection of parts done?
05:00
Examples of inspection of a part
07:27
CMM inspection
01:57
Quiz on Basics
10 questions

Need for GD&T.

11 lectures
Tolerancing a pin with a gauge hole
10:54
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
Why GD&T is needed?
03:21
Example of Parallel faces
03:22
T slots example
03:26
Poppet of Valve example
02:40
When to use Co ordinate tolerancing and when not
00:00
Quiz : Why GD&T ?
3 questions

Introductory Concepts of GD&T

21 lectures
Origins of GD&T
01:54
Size, Form, Orientation and Location
05:14
Example of a square pin : Types of deviations of feature
02:19
What is GD&T ? What are the important concepts?
02:35
The Feature control Frame
03:55
Basic Dimensions
03:29
Common Drafting Errors- Basic dimensions and Feature control frame
03:00
Identify the drawing error in examples- Basic dimensions and FCF
01:30
Feature of Size
02:15
Identifying Feature of Size
02:52
Identifying Feature of size Example 2
02:04
Types of Features and Exercises on Feature of size
02:17
Irregular Features of Size and comparison
06:10
Comparison between GD&t and non GD&T
03:18
Material Conditions
02:00
Material conditions exercise along with feature and FOS
03:48
Rule 1 of GD&T
04:07
Rule 1 Examples and Over riding Rule 1
04:08
Rule 1 : Bending of Pin and Exercises in Rule #1
06:51
Need for Reference
01:56
Introductory concepts
11 questions

Datums

25 lectures
Datums : Introduction
01:11
How Datums are Created
05:27
Datum and Datum Feature , Terminology
02:40
Datum Reference Frame
02:12
Datum reference frame CAD demonstration
03:30
Datum Reference frame - 2 Cylindrical feature and 1 Planar feature
02:48
Datum Reference frame - 2 Cylindrical feature and 1 Planar feature CAD
01:28
Datum Reference Frame - 1 Cylindrical and 2 Planar feature
02:45
Datum Reference Frame - 1 Cylindrical and 2 Planar feature CAD
01:48
Building Datum Reference frame of a component - Step by step
03:03
Datum reference frame exercises
02:50
Selection of Datums
04:10
Simple Process of Applying Datums
02:13
Flowchart in selection of Primary Datum
03:42
Examples of Datum Scheme selection
06:04
Exercise in selection and sequencing of datums
02:52
Tolerance Zone
02:25
Define tolerance zones for each control - simple example
05:22
How GD&T Helps Inspection?
02:05
Tolerance zone Comparison for Position control of Hole
02:48
Comparison Summary
01:21
Case study : GD&T vs CT scheme of same part Part 1
08:09
Case study : GD&T vs CT scheme of same part Part 2
06:41
Inspection Requirements
02:01
Datums
8 questions

Bonus tolerance and Virtual condition

23 lectures
Material Modifiers on Geometric tolerance
03:07
Rule #2
05:00
Material Modifiers Example
02:57
Shaft Position Tolerance Brief
01:07
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
Exercise : Find the virtual condition of the features of size in drawings
02:07
Resultant Condition External Feature of Size at MMC
02:39
Resultant Condition Internal Feature of Size at MMC
02:07
Bonus Tolerances study for LMC modifier
05:00
Resultant and Virtual conditions for LMC and Summary
07:50
Example with LMC modifier and calculating minimum wall thickness
04:39
Example 2 with LMC modifier and calculating minimum wall thickness
03:25
Tolerance Calculations for manufactured part - RFS vs LMC vs MMC with exercise
10:24
Actual Mating Envelope
04:16
Example of Actual mating envelope further explained
05:33
MMC, Virtual conditions
6 questions

Form Control

23 lectures
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
Industry specific example: uses of Flatness in Sheet metal parts
04:04
Flatness applied to feature of size
05:56
Circularity
02:12
Inspecting Circularity
01:37
Cylindricity
01:38
Inspecting Cylindricity
01:18
Examples with cylindricity applied to machine parts
03:25
Points on cylindricity and circularity
01:51
Difference between Surface straightness control and cylindricity
01:37
Form control
8 questions

Orientation control

12 lectures
Angularity control
01:59
Angularity Inspection
02:07
Calculating the angle from tolerance zone - orientation
04:10
Sheet metal parts - angularity of flanges
04:05
Perpendicularity
01:20
Inspecting Perpendicularity
02:19
Perpendicularity of Feature of size
02:28
Parallelism
01:21
Inspection of Parallelism
01:03
Examples with all Orientation controls applied
07:21
Parallelism vs Flatness
04:27
Orientation control
5 questions

Location control

9 lectures
Position Control and its Inspection
03:25
Comparison between Perpendicularity and position
02:17
Concentricity
01:38
Symmetry
02:24
Example of Orientation + Position control - part 1
07:00
Example of Orientation + Position control - part 2
03:02
Inspecting position using a functional gauge
04:54
Using position to control co axiality + Refinement of position
03:41
Location control
5 questions

Runout

8 lectures
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
Examples with Runout - Wheel rim, rotating systems
07:18
Runout controls both Concentricity and Cylindricity
02:08
Runout
6 questions

Profile

6 lectures
Profile of a Line
01:56
Profile of a surface and its Inspection
02:53
Points on Profile tolerance
00:55
Profile control tolerance - Types, variations, interpretations
12:41
Examples with Profile
07:52
Profile
5 questions

Datum feature modifier- Datum Shift

9 lectures
Datum Feature Modifier Introduction
01:45
Datum feature modifier Example
03:42
Datum feature modifier example continued
03:54
Datum Shift Example no.2
03:53
Datum reference frame is fixed
01:39
Benefits of Datum shift
01:19
It is not Bonus tolerance
01:04
More Examples
00:03
Datum Shift
5 questions

Test your knowledge

1 lectures
Test your knowledge
27 questions

Practice Exercises

5 lectures
Task 1 : Setting GD&T scheme based on Design intent
07:30
Task 2 : Write the interpretation of feature control frame in a statement
01:34
Task 3 : Interpretation of Drawing - Input information
02:18
Task 3 : Quiz
7 questions
More Drawings of real parts for Interpretation
00:04

Bonus Section - More courses on GD&T and engineering

1 lectures
Bonus - More courses on GD&T - discount coupons
05:08

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