Duration
2 days
Overview
A Workshop that on methods to calculate the mechanical design of parts and acceptable tolerances for better products. It is not an Inspection and Design course. The workshop helps the participants to perform the proper procedures on interpretation of Dimensioning, Tolerances and Engineering Drawings. References on ANSI Y 14.5-1973, ANSI Y 14.5M – 1982 and ASME Y 14.5 M-2009 will be discussed in detail for practical application.
Target Audiences
All Personnel who involve in Design and Interpretation of Mechanical Drawings.
Objectives
This session enable the participants to:
- Understand the standard practices for stating Dimensioning, tolerancing and related standards in engineering drawings.
- Communicate a clear and concise 3D mathematical language regarding product definition.
- Apply the basic procedures in GD & T requirements.
- Comply with ANSI Y 14.5-1973, ANSI Y 14.5M – 1982 and ASME Y 14.5 -2009 requirements in drawing of products.
- Interpret the technical drawing appropriately based on technical requirements from symbols and systems of GD & T.
Day 1
- 1. Introduction to GD & T.
- What is GD & T?
- Application of GD & T.
- 2. Definition of GD & T.
- What is Dimensioning?
- What is Tolerance?
Exercise : Simple definition on Geometry, Dimensioning and Tolerance.
- 3. Standards for GD & T.
- ASME standards
- ISO standards.
- Din Standards.
- 4. Direct Tolerancing Methods.
- Application examples on sizes and dimension
- Exercises from a simple case using lead frame example.
- 5. Rules for Drawing and Designs.
- Envelope Principle.
- Rules for Gear and Splines.
- Rules for Screws.
- Regardless of feature size.(RFS)
- Maximum Material Condition (MMC)
- Least Material Condition (LMC).
- Virtual Condition and Resultant Condition.
- Case studies: Interpretation of drawing and designs involved hardware components
- 6. Common Symbols used in G D & T.
- List of symbols and their interpretation.
- 7. Assessment Exercise : Study of tolerancing condition
such as Maximum Material Condition (MMC), Least
Material Condition (LMC) and Regardless of Feature
Size (RFS) application and interpretation.
- 8. Geometric Characteristic Symbols.
- Symbols application.
- Datum reference application to various symbols.
- Assessment Exercise.
- 9. Composite Tolerancing.
- Examples and Exercise.
Day 2
- 10. Simultaneous Requirements for Combined parts.
- Computation of holes in relation to leading hole in various materials condition.
- Application of the condition to achieve better machine settings.
- Exercise on computation and interpretation.
- 11. Composite Position Tolerance.
- Interpretation and understanding.
- Exercises and examples.
- 12. Two Single Segment Feature Control Frame.
- Interpretation and understanding.
- Exercises and examples.
- Assessment test: Using the technical drawing on various component, decide how to fabricate the parts successfully taking consideration of business factors.
- 13. Inspection for proper Tolerances & Dimensioning.
- Appropriate and correct approach of during inspection.
- Correct position and method of measurement of parts based on
- the technical drawings.
- Exercise : To develop a measurement matrix based on given technical drawing.
- 14. Datum & relevant Selection.
- Definition of datum reference frame.
- Definition of datum reference points
- 15. Decision Diagrams.
- 16. Study of Sample Drawings.
- Exercise and Workshop: Interpretation of sample mechanical drawings.
- 17. Convert from +/- to true position tolerancing.
18 Conclusion and Q & A session
End of day 2 and whole training.
Note: Exercises will be given through out the training to facilitate the understanding of all participants.
Course Methodology
The course will be conducted in the form of Workshop, Lectures, Case studies, Practical and exercises to
calculate the Drawing and Tolerancing of Part Design for participant's application and examples.
Programme scope, delivery arrangements and suitability are confirmed during enquiry.