Feature (technical design)

See also: Milked

In Technical design, a milked is characterized by: its nature (continuous, stopped or mixed) and its width (extremely or end). The use of the various features follows standards NF E 04-520, ISO 128 (1982), NBN E 04-006.

; Remarks

  • the width of the features must be identical of a sight to the other, whatever the sight or the scale.
  • spacing between two parallel features must be higher or equal to the double of the width of the strong feature. It should never be lower than 0,7 mm (for a strong feature of 0,7 mm, spacing is of 1,4 mm, which gives a white of 0,7 mm between).
  • the intersection of the mixed features and that of the stopped features must be relevant. For example, the intersection of the fine mixed features of two axes must be done on the longest part of the feature. Or also, the intersection of two stopped features must be done on the traced parts.

The typical forms of revolution are

Previously, the diameters of the Cercle parallel with the axes were represented by a feature of axis; it is not standardized any more, the center is now simply marked of a cross +.

Width of the features

The strong feature must be perfectly readable (even after reproduction). The width of the strong feature must be at least the double of the width of the fine feature.
\ frac {\ mbox {width of the strong feature}} {\ mbox {width of the fine feature}} \ Ge 2
Typically, the width of the features for a drawing with ink are:
  • 0,7 mm for a strong feature,
  • 0,25 mm for a fine feature
  • 0,35 mm for the writing and the arrows (dimensions)
For the drawing with the pencil, one uses:
  • a mine of a width of 0,5 mm (milked extremely) and
  • a mine of 0,18 mm (milked fine).

Example of application

éke

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