Excedify - Engineering Online Courses

The Engineering Drawings Fundamentals Training course is designed to provide students with a comprehensive understanding of the principles, practices, and techniques used in technical drawing for engineering applications. The course covers a broad range of topics, including orthographic projection, dimensioning, tolerancing, and the use of standard symbols and abbreviations.

The course begins with an introduction to engineering drawing and the role it plays in the design and production of mechanical parts and assemblies. Students learn about the different types of drawings used in engineering, including sketches, assembly drawings, and detailed part drawings, and how to create and interpret each type of drawing.

The training course then delves into the principles of orthographic projection, which is the method used to create two-dimensional views of three-dimensional objects. Students learn about the different types of projection, including first-angle and third-angle projection, and how to create and interpret orthographic views.

The next section of the course focuses on dimensioning and tolerancing, which are critical aspects of technical drawing. Students learn about the different types of dimensions and tolerances, how to apply them to engineering drawings, and how to ensure that drawings accurately represent the intended design.

The course also covers the use of geometric dimensioning and tolerancing (GD&T), which is a standardized system for specifying and controlling the dimensions and tolerances of mechanical parts and assemblies. Students learn about the different types of GD&T symbols and concepts, how to interpret GD&T drawings, and how to apply GD&T to engineering designs.

Another important topic covered in the course is the use of standard symbols and abbreviations in technical drawing. Students learn about the most common symbols and abbreviations used in engineering drawings, and how to create and interpret drawings that use these symbols and abbreviations.

Throughout the course, students are also introduced to various software tools used in engineering drawing, such as computer-aided design (CAD) software. Students learn how to use these tools to create and modify technical drawings, and how to ensure that drawings are accurate and meet industry standards.

By the end of the course, students have a thorough understanding of the fundamentals of engineering drawing and are able to create, interpret, and modify technical drawings used in a variety of engineering applications. They have also gained the knowledge and skills needed to ensure that drawings accurately represent design intent, meet industry standards, and are suitable for use in production and assembly.

This comprehensive course, focusing on technical drawing and its fundamental principles, is designed to equip participants with the skills necessary to create and understand technical drawings in engineering, architecture, and manufacturing. The course is structured into detailed chapters, each of which delves into a specific aspect of technical drawing. Here is an overview of each chapter:

The Need for Technical Drawing: This introductory chapter underscores the importance of technical drawings as a universal language in engineering and manufacturing. It highlights the role of technical drawings in bridging communication gaps across different geographical locations, languages, and cultural contexts, using the example of a design engineer overseeing production across continents.

The Standards behind Engineering Drawings: This chapter explores the role of international and regional standards in technical drawing, focusing on ISO standards such as ISO 128, ISO 3098, ISO 8015, and ISO 2768. The chapter explains how these standards ensure consistency, precision, and universal understanding in technical drawings, which is crucial in global collaboration and production.

The Drawing Sheet: Focusing on the fundamentals of sheet sizes and layouts, this chapter introduces the A series paper sizes (A0, A1, A2, A3, A4) and explains their importance in technical drawing. It covers the significance of the golden ratio (1:√2) in the design of these paper sizes and the basic components of a drawing sheet, such as the title block and frame.

Drawing Border and Coordinate System in Technical Drawings: This chapter delves into the use of borders and alphanumeric coordinates in technical drawings. It explains how borders define the drawing area and how the coordinate system aids in locating elements and streamlining communication among professionals, using practical examples for clarity.

The Title Block and Revision Table: This chapter covers the title block, explaining its purpose and the essential information it should contain, as outlined by British Standards. It also discusses the revision table, detailing its components and its importance in documenting changes made to a drawing over time.

The Two Main Types of Drawings: This chapter differentiates between detail drawings and assembly drawings, explaining their unique characteristics and purposes. It also introduces the concept of a Bill of Materials (BOM) and its role in assembly drawings.

Exploded View: Briefly mentioned but not elaborated upon in the provided content, this section would likely delve into the concept of exploded views in technical drawings, illustrating how individual components fit together in an assembly.

Projection Techniques - Isometric and Orthographic Projection: This chapter explains the concepts of isometric and orthographic projection, highlighting their importance in technical drawing. It details how these projections are used to represent objects and how they differ from one another.

First and Third Angle Projection: This chapter explores the differences between first and third angle projection methods, explaining how they affect the arrangement of views in technical drawings and their practical applications in different regions.

The Drawing Main Views: Focusing on orthographic projection, this chapter explains how the main views (front, side, top, bottom) are generated and used in technical drawings. It also introduces the concept of deflector lines in generating additional views.

Section Views and Hatching: This chapter covers section views and the use of hatching lines to illustrate cut surfaces in technical drawings. It explains the significance of section views in revealing internal features of an object.

Offset Section Views and Callout Views: This chapter discusses the use of offset section views to illustrate non-aligned internal features and callout views for highlighting specific details in a drawing.

Types of Lines in Technical Drawings: This chapter delves into the various types of lines used in technical drawings, such as visible lines, hidden lines, center lines, section lines, and others, explaining their purposes and applications.

Threads Representation in Technical Drawings: This chapter explains how screw threads are represented in technical drawings, discussing ISO standards and the conventions used for depicting threads.

Dimensioning Techniques and Standards: This extensive chapter covers various aspects of dimensioning in technical drawings, including different types of dimensions, rules for dimensioning, and the use of tolerances. It discusses different tolerance indication methods, general tolerances, and limits and fits.

Geometric Dimensioning and Tolerancing (GD&T): This chapter introduces GD&T, a system for specifying and tolerancing the form, orientation, and location of features on a part.

Welding and Surface Roughness: Although not detailed in the provided content, this chapter would likely cover the representation of welding symbols and surface roughness in technical drawings.

Each chapter of this course is designed to provide a thorough understanding of technical drawing principles and practices, preparing participants to effectively communicate design ideas and specifications in a technical context.