slide on design guide

1. Introduction to Geometric
Dimensioning and Tolerancing
(GD&T)
• A Modern Approach to Engineering Drawings
• Presented by: [Your Name]
• Date: [Insert Date]

2. What is GD&T?
• - GD&T stands for Geometric Dimensioning
and Tolerancing
• - Symbolic language used in engineering
drawings
• - Describes geometry and allowable variation
of part features
• - Ensures functional design and
interchangeability

3. Why Use GD&T?
• - Improves communication between design,
manufacturing, and inspection
• - Provides clear and precise tolerances
• - Reduces ambiguity compared to traditional
dimensioning
• - Enhances quality and reduces production
cost

4. Key Concepts
• - Datums: Reference points for measurements
• - Feature Control Frame: Describes tolerance
for a feature
• - Symbols: Standardized geometric symbols
• - Tolerance Zones: Area where features must
lie

5. Common GD&T Symbols
• - Straightness
• - Flatness
• - Circularity
• - Cylindricity
• - Profile
• - Angularity
• - Perpendicularity
• - Position
• - Concentricity

6. Applications of GD&T
• - Automotive industry
• - Aerospace components
• - Precision machining
• - Mechanical assemblies

7. Conclusion
• - GD&T provides a universal language for
design and manufacturing
• - Enhances precision, quality, and consistency
• - Essential for modern engineering practices

8. GD&T Feature Control Frame
Example
Shows how to define a feature with control symbols

9. Common GD&T Symbols Reference
Table of standardized GD&T symbols

10. GD&T in Engineering Drawings
Real-world application of GD&T callouts

11. GD&T Tolerance Zone Examples
Illustrations of various tolerance zones