TUTORIAL: Pro/E Variable Section Sweep feature with TRAJPAR equation

TUTORIAL: Pro/E Variable Section Sweep feature with TRAJPAR equation

Version: Pro/E Wildfire, Wildfire 2.0 and Wildfire 3.0

TRAJPAR is the trajectory parameter used in relation for variable section sweeps in Pro/ENGINEER. TRAJPAR value ranges from 0 to 1 as the section is swept along the trajectory. This tutorial gives you a quick guide on how trajpar works in the relation for variable section sweep.

 Variable Section Sweep feature with TRAJPAR

Click here to download the exercise files for this tutorial.

1. Open the sweep_trajpar_start.prt

 Pro/E Variable Section Sweep feature with TRAJPAR

2. Click Insert > Variable Section Sweep from the menu or the variable section sweep icon ProE Variable Section Sweep icon to activate the Variable Section Sweep command. Next, select the circle as the trajectory. Notes: Trajectory selected will turn into red.

ProE Variable Section Sweep feature with TRAJPAR select trajectory
 
3. Click the sketch icon ProE dashboard sketch on dashboard to start sketching. Alternatively, you can also press and hold the RMB and choose the sketch option from the drop down menu.

 ProE drop down menu > press and hold RMB

4. Sketch a straight line as shown below.

ProE Variable Section Sweep feature with TRAJPAR: sketch 

5. Next, click Tools > Relations from the top menu. In the relations dialog box, type in an equation as below

sd# = 5*sin(trajpar*360*6)

 Proe Variable Section Sweep feature with TRAJPAR:relation

 sd# is the dimension which you wish to be varies. In this tutorial, we are going to control the line (section) distance from the trajectory.

sin(trajpar*360*6) values ranges from 0 to 1 for 6 fases. Here, you can decide the number of fases for the equation.

Value 5 is the amplitude for the equation. You can substitute it to any value as you like.

6. Click the OK button when you are done. After that, press the check icon ProE sketch confirm  to confirm the sketch. You should get a surface as shown below by now. The section is changing according to the equation wrote.

ProE Variable Section Sweep feature with TRAJPAR preview
 
eep feature with TRAJPAR preview
 
7. OPTIONAL: You can also insert another equation in the relation to control the line length.

sd# = 60 -10*cos(trajpar*360*6)

This equation makes the line length varies from 50 to 70 for 6 fases.

eep feature with TRAJPAR relation

The final surface should look like below. You can open the sweep_trajpar_done.prt as reference.

eep feature with TRAJPAR preview

eep feature with TRAJPAR preview

 

 Related Links:
What is Pro/ENGINEER Wildfire Variable Section Sweep?
TIPS: Pro/ENGINEER Wildfire Variable Section Sweep

Variable Section Control in Pro/E Variable Section Sweep feature with Evalgraph
TUTORIAL: Create CAM profile using Graph feature in Pro/E

Section Plane Control in Pro/E Variable Section Sweep feature
TIPS: Pro/E Wildfire Variable Section Sweep – Section Plane Control

Pro/E Variable Section Sweep feature with Multiple Trajectories
TUTORIAL: Pro/E Wildfire Variable Section Sweep - Multiple Trajectories