Geometric dimensioning and tolerancing according to ISO and ASME standards

Programme and exercises            

·        GPS - product geometric specification.

·        Structure of GPS standards.

·        Classification of dimensions.

·        GD&T - geometric dimensioning and tolerancing versus GPS.

·        Classification of geometric tolerances.

·        Symbolism of geometric tolerances.

·        GDT general tolerance:

·        for linear dimensions, 

·        for angular dimensions, 

·        determination of general tolerances.

·        Tolerating the free state.

·        Shape tolerances:

·        straightness, 

·        flatness, 

·        circularity, 

·        cylindricality,

·        the shape of the designated outline (without bases), 

·        the shape of the designated area (without bases).

·        Metrological traceability of shape deviations.

·        Bases: their types and base layouts.

·        Direction tolerances:

·        parallelism, 

·        perpendicularity, 

·        inclination.

·        Position tolerances:

·        position, 

·        concentricity/coaxiality, 

·        symmetry.

·        Tolerances of the designated shape-outline and the shape of the designated surface (with bases).

·        Run-out tolerances.

·        Conditions (rules) used in tolerating (MMC, LMC, RMC, EC).

 Exercises:

• Examples of specifying the requirements on drawings. 
• Interpretation of the provisions of the GDT requirements. 
• Solving problems and tasks in teams, discussion. 
• Reading specification notes on technical drawings. 
• Interpretation of requirements with the maximum material condition. 
• Measurement of selected geometric tolerances (parallelism, run-out, etc.).
• Calculation of permissible geometric tolerances.