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Creo Tip of the Week: Using The Trajpar Function for Varying Sections

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Trajpar Function Step #1: Start out by making a variable section sweep… Make a circular cross section with a diameter of 1 – Note the section is constant over the entire trajectory path…

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Trajpar Function Step #2: Redefine the variable section sweep and add a trajpar relation to vary the cross section…

Click Tools > Relations…

Type the following relation into the command box

sd3 = 1 + 2*trajpar

Diam of section

Start diam value

Changes the diameter by +2 over the trajectory

Result:

1.0 Diam

3.0 Diam

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Trajpar Function Step #3: You can edit the equation to modify the cross section any way you like – refer to the alternative examples below…

sd3 = 1 + 2*trajparˆ2 sd3 = 5 + 2*cos(360*trajpar)