GPS 110 — Dimensional Tolerancing
Available at iso-gps.com ↗. List price US$ 99.
Course Topics
- How dimensions are indicated in technical drawings
- The different types of dimension indications
- What should and what should not be toleranced with dimensional tolerances
- IT tolerance codes according to ISO 286
- The envelope requirement
- Former rules for dimensional tolerancing
Course Description
The course covers dimensional tolerancing in technical drawings according to the ISO GPS rules. It explains the feature concept and defines features of size, which are the only kind of features that should be toleranced with dimensional tolerances.
The course explains how dimensions and tolerances are indicated in drawings. It covers tolerancing using IT (International Tolerance) codes, e.g. H7 or c6, as defined in ISO 286.
The course covers the envelope requirement that is used to ensure simple assemblability between shafts and holes.
Finally, the course discusses former practice and the rules that applied before the most recent standards for size tolerancing were published in 2010, and explains why dimensional tolerances should only be used for features of size.
Learning Goals
Upon completing this course you will be able to:
- Understand the possibilities and limitations of dimensional tolerancing.
- Read how dimensional tolerances are indicated in technical drawings.
- Look up IT tolerance codes in ISO 286.
- Understand how the envelope requirement works.
- Understand what the former practice and rules were before the latest ISO standards for dimensional tolerancing were published in 2010.
This course is intended for anyone working in manufacturing industry who has an interest in dimensional tolerancing according to ISO Geometrical Product Specification standards.