This is the option used most often for top-down assembly design. When only the Associative Copy option is checked in the dialog box, an associative reference is created without a timestamp. Example of using non-associative referenceĢ) Associative Reference (without a timestamp) Because this is a one-time static copy, it is un affected by any change from external parts, as shown in figure 2 below.įigure 2. It turns out that the reference geometry is unchanged, even when the selected external feature is deleted. Now, you may wonder, “What happensto the reference geometry whenthe feature on which it depends is edited or deleted?” This is the simplest form of reference, with no association.
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When the Associative Copy option is left unchecked, ZW3D creates a one-time static copy of the selected geometry from the external part. The dialog box for controlling reference geometry (Note that for each of these, five types of 3D reference geometry are supported, curve, plane, point, face, and shape.)įigure 1. (See figure 1.) The three types are as follows:Īssociative reference (without a timestamp) ZW3D 2012 SP2 provides three ways of handling reference geometry, which I will describe to you. I’d like to describe a tool I found most useful in managing associations: reference geometry.
CREATE ASSEMBLY ZW3D CAD 2018 HOW TO
The most important thing to understand is how to manage this kind of association between related components.
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In this case, constraints are made between the existing geometric elements within the assembly. In contrast, top-down design is the design methodology used most often when creating new parts in an assembly context. In actual fact, the design and development of new products combines both of them.īottom-up design begins the design of the individual parts and then inserts them into an assembly. Designing top-down and bottom-up are the two approaches for assembly design.