rectangle (square) to round ductwork transition

rectangle (square) to round ductwork transition
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SolidWorks 2012 Tutorial

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Ductwork Transitions: Rectangle (Square) to Round Transition

 

square to round transitionDuctwork parts, beginning with the square to round transition, or rectangle to round, are really quite easy to model in 3D with most any CAD system. Getting the correct flat pattern is another story. Today's CAD programs, like SolidWorks, Solid Edge, and Inventor include an unfolding feature. For AutoCAD, you need to purchase a third party program such as ProFold.

 

rectangle to round transitionHere you can create a DXF file of any standard rectangle (square) to round transition. Both the 3D and flat pattern are included on separate layers. You may then import the file into your CAD system.

 

How to Use This Program

Enter the values below to describe the transition. Also, enter the number of segments around the circle. This must be a multiple of 4. The minimum number of segments is 8 and the maximum is 32.

 

While you can assign any name to the file, the suffix must be .txt when you create it. Then, use Windows Explorer to rename the file to .dxf before importing it into your CAD system.

 

Then, click the Calculate button. ONLY works with Microsoft Internet Explorer.

Diameter of Round:
Length of Rectangle:
Width of Rectangle:
Height of Transition:
Number of Segments:

NOTE: Some versions of Internet Explorer are adding extra lines (html tags) into the DXF file. If you get an error reading the DXF file into your CAD system, “Open” the DXF file in a text editor, such as Notepad. Look at the first three lines. If they have the Less Than ‘<’ and Greater Than ‘>’ symbols around them, delete these lines. Then go to the end of the file and do the same thing with the last couple of lines. Save the file and try it again.



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