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Pro/Engineer April 2004 Tip-of-the-Month
Dimensioning Schemes for Saved Sketcher Sections
A fast way to repeat features of similar geometry in different models is to save sketches of often repeated sections. How many times have you sketched the same basic geometry over and over?
Saving the section is easy -- simply use File > Save in Sketcher when the section is complete.
Using the section again in another feature is also easy -- Sketch > Data from File > Browse to the section and place it. Options include Scale and Rotate fields in the placement dialog. (See January 2003 Tip-of-the-Month for additional information.)
Making the sketch easier to reuse is this Months Tip.
When saving a sketch, there are a few things to remember:
The added construction lines of Figure 2 will also make the section easier to place because it has lines corresponding to the references. Figures 1A and 2A show how the respective sections will look by default when they are placed as new sections. Note the dimensioning and constraints.
After placement, look at the constraints to be sure they are appropriate. Sometimes the constraints are not as you would expect -- especially tangent constraints with splines and conics. Often there is a 180 degree dim (Figure 3) instead. Sometimes you cannot re-make the tangent constraint so it has to stay dimensioned as 180 degrees.
(I do not understand why some constraints are saved and some are not -- especially tangent constraints for splines and conics. See Figure 3. This is a good place for PTC to do little more work.)
Some things to do when saving and placing a sketch:
TIP - When saving a sketch, use the default name. Pro/E has some funniness about naming. Just use the default (something like s2d0012.sec), then rename the file and move it to your section library with whatever file manager you like. Renaming to something meaningful and moving it to a Sketch directory will make it easy to find later.
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