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Dialog: Function-Block: Pattern

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Dialog: Function-Block: Pattern

Pattern FB

If you use regular CAD, you know about circular and linear arrays. In MechDesigner, there is more complexity because parts frequently have complex motions.

A Pattern FB makes Copies of Profile/Extrusions (MD-Solids) and CAD-Solids - see Solids,

The Pattern FB anticipates the motion of each Copy and puts each Copy at a position that corresponds to its phase of the machine-cycle.

The Pattern FB can show or hide a Copy for a machine-cycle.

The Pattern FB can use a timing-chart to show or hide Copies as they pass through different phases of the machine-cycle.

Use Visibility toolbar > Show Solids in Mechanisms to see the Copies that we generate for you with the Pattern FB.

How to open the Pattern FB dialog

Open the Pattern FB dialog:

 1.Click the Pattern FB in the Assembly-Tree. The Pattern FB is now in the Selection-Window 2.Right-click the Pattern FB element in the Selection-Window 3.Click Edit element in the shortcut menu OR 1..

The Pattern FB dialog is now open.

Pattern dialog

Pattern FB dialog

There are two tabs in the Pattern FB dialog:

Phase Visibilities tab

To help understand Phase-Visibilities, we can use a Analog-Clock as an example.

Imagine a chain is wrapped around a circular, 12-hour, analog, clock. There are 12 chain-links in the chain.

The chain moves continuously around the circular clock. One of the chain-links is the Source Pattern-Element (Solid).

Use PHASES to decide how many chain-links you want in the chain - called # Copies - in this example, 12 chain-links

Use PHASES to hide one or more chain-links (the Copies) permanently, as it moves all the way around the clock.

Nearly always, use PHASES to Hide Source Pattern-Element.

Use Pattern Visibility to hide each chain-link, one link after the next link, as it moves between hours, for example, between 6 and 9 o'clock.