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Article | REF: R1220 V2

Errors in form, position, orientation, and stroke. Part 1

Authors: Christian BONZOM, Éric FARGIER

Publication date: December 10, 2005

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    1. Geometric elements that make up a part

    • The Point

      In general, due to the fragility of the materials, which does not allow for absolute sharpness of edges to be guaranteed, the point has no physical representation on mechanical parts.

      However, it often appears as a fictitious element in objects (center of a sphere or apex of a cone).

      Example

      Examples: the top of a cone (see figure 1 ), the intersection of the three planes of the faces of a parallelepiped, the center of a circle or sphere (see figure 1 ).

    • The Line

      A line is a fictitious element...

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