Please enable JavaScript.

Coggle requires JavaScript to display documents.

Dimensions , Tolerance and Assemblies - Coggle Diagram

- - - - Dimensioning of Radius : radial dimensions start with capital 'R
      - Dimensioning of multiple features : To dimension multiple same dimensions, use N x dimensions
      - dimensioning angles :It needs to be marked with a curved dimension line and the degree symbol
      - Dimensioning of circle, arc and hole :
        
        A circle is dimensioned by its diameter
        
        An arc is dimensioned by its radius
        
        holes are located by their centerlines
      - Dimensioning Small Features: Placing arrow heads between extension lines that may make the dimension very difficult to read. Arrow heads can be placed outside the extension lines instead
      - Combined Dimensioning: Uses both chain and parallel dimensioning
      - Chain Dimensioning: should only be used if the function of the object would not be affected by the accumulation of the tolerances
      - Superimposed Running Dimensioning : Simplifies parallel dimensions in order to reduce the space used in drawing
      - parallel dimensioning : consists of several dimensions originating from a common reference surface ( known as the datum )
  - - - Avoid dimensioning to hidden lines and features
      - Dimensions lines, extension lines and object outlines should not cross or overlap
      - Dimensions should not be duplicated, i.e. same dimension should not be repeated on different views , or the same information need not be given in two different ways