06. Dimensioning
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This document discusses rules and guidelines for dimensioning in technical drawings. It covers proper placement of dimension lines and text, how to dimension different geometric features like arcs, holes, chamfers and fillets. The dimension text should indicate the actual measurement, and dimensions should be placed in the most suitable view without other lines cutting through. Considerations for manufacturing processes, repeated features, and alignment of dimensions are also addressed.
06. Dimensioning
- 1. 1. WORKING DRAWINGS 2. SURFACE CHARACTERISTICS 3. DIMENSIONAL TOLERANCES 4. FITS 5. GEOMETRIC TOLERANCES 6. DIMENSIONING 7. THREADED FASTENING 8. SHAFT AND PIPE JOINERS 9. BEARINGS 10. GEARS 1: DEFINITION 11. GEARS 2: BEVEL AND HELICAL 12. BELTS AND CHAINS 13. WELDED JOINTS AND RIVETS 14. INDUSTRIAL DESIGN METHODOLOGY 15. SIMULATION 6. DIMENSIONING
- 2. DIMENSIONING Industrial Drawing CC 2015 Ramón Rubio RULES These are the parts of a dimensioned line
- 3. DIMENSIONING Industrial Drawing CC 2015 Ramón Rubio RULES
- 4. DIMENSIONING Industrial Drawing CC 2015 Ramón Rubio RULES Dimension text ALWAYS indicates the REAL measurement Scale 1:2 Scale 1:1
- 5. DIMENSIONING Industrial Drawing CC 2015 Ramón Rubio RULES Every dimension should be placed in the most suitable view
- 6. DIMENSIONING Industrial Drawing CC 2015 Ramón Rubio RULES Place dimensions out of the views
- 7. DIMENSIONING Industrial Drawing CC 2015 Ramón Rubio RULES No lines should cut the dimension line
- 8. DIMENSIONING Industrial Drawing CC 2015 Ramón Rubio RULES Chamfers and fillets… use extended lines
- 9. DIMENSIONING Industrial Drawing CC 2015 Ramón Rubio RULES Never a break in breaks
- 10. DIMENSIONING Industrial Drawing CC 2015 Ramón Rubio RULES Arcs: If you know the centre of the arc, the dimension line has to begin in that centre.
- 11. DIMENSIONING Industrial Drawing CC 2015 Ramón Rubio RULES Dimension text orientation Left side Centred
- 12. DIMENSIONING Industrial Drawing CC 2015 Ramón Rubio RULES No dimensions with hidden lines…use cuts and sections
- 13. DIMENSIONING Industrial Drawing CC 2015 Ramón Rubio RULES Be careful with sections in profile views Diameter symbol in circles
- 14. DIMENSIONING Industrial Drawing CC 2015 Ramón Rubio RULES Take into account manufacturing processes This line should not be dimensioned
- 15. DIMENSIONING Industrial Drawing CC 2015 Ramón Rubio RULES Holes Dimension the centre
- 16. DIMENSIONING Industrial Drawing CC 2015 Ramón Rubio RULES It’s not necessary to repeat dimensions of repeated features
- 17. DIMENSIONING Industrial Drawing CC 2015 Ramón Rubio RULES Dimensions should be aligned
- 18. DIMENSIONING Industrial Drawing CC 2015 Ramón Rubio RULES Hole simplified dimensions
- 19. 1. WORKING DRAWINGS 2. SURFACE CHARACTERISTICS 3. DIMENSIONAL TOLERANCES 4. FITS 5. GEOMETRIC TOLERANCES 6. DIMENSIONING 7. THREADED FASTENING 8. SHAFT AND PIPE JOINERS 9. BEARINGS 10. GEARS 1: DEFINITION 11. GEARS 2: BEVEL AND HELICAL 12. BELTS AND CHAINS 13. WELDED JOINTS AND RIVETS 14. INDUSTRIAL DESIGN METHODOLOGY 15. SIMULATION 6. DIMENSIONING