Top-down modeling — how to exploit strongest features of NX CAD

Background Design engineer’s task is to describe geometry of the future product. For a long time, this task could only be accomplished by the means of the hand-made 2D drawing. The drawing created in this way is an approximation of the geometry which exists in the design engineer’s imagination. Thus, the exact shape of the geometry if finalised only during the manufacturing process. Until recently, the traditional 2D drafting technique was the only one available. As a result, design organisations developed a strong habit towards the limitations which derive from the manual drafting process. Limitation #1: Incompleteness Shape of components and their relative positions in assemblies can only be described by a limited number of views and sections on the 2D drawing. As the complexity of …

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