This course concentrates on the key principles required to read and interpret engineering drawings. Exercises are used to bring to life and highlight the importance of this essential (but often weak) design skill. Delegates will learn how to correctly apply dimensions and tolerances of size and the training will cover the key skills of line convention, lettering, scales, projection methods, screw threads, dimensioning and surface texture.
- How to apply dimensions and tolerances of size.
- Importance of communication standards.
- Increasing efficiency and economy in time and materials.
- Removing barriers caused by differences in practices.
General Principles of Presentation:
- The essential foundation skills
Basic Convention for Lines:
- Correct engineering drawing requires the use of different line types and styles to represent different elements of the finished product and to avoid confusion in interpretation.
- Producing lines via CAD systems
- The importance of lettering & when to use different text styles
- How to use the BS8888 standard for preferred scale factors when converting full-size CAD drawings to scale factor plots
- Understanding the choice between first & third angle projection
- Some 3D modelling systems have the ability to show screw threads in a graphical form, however 2D drawings do not require this level of detail
- Examines how to represent both internal & external screw threads
- Welding symbols
- When to add tolerances
- Explanation of why they are needed
- Shows how the designer can check that tolerances are correct
- When machining components the surface finish will be important to the end user and this section examines how to state & interpret different types of surface finish