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ME-430 INTRODUCTION TO COMPUTER AIDED DESIGN Windmill – Parallel Blend Option Pro/ENGINEER Wildfire 2.0
Dr. Herli Surjanhata
Figure 1
Step 1:
Create revolve protrusion for the hub as shown in Figure 2 below. Note that the location of center of the arc is in PRT_CSYS-DEF. Make sure you create a vertical centerline as axis of revolution, and the diameter of the hub at the bottom is 14 inches.
Figure 2 Revolve section of the hub
Step 2:
Click the Create datum plane icon to create a new datum plane DTM1 through axis A_2, and -30º angle with FRONT datum plane.
Pick the A-2 axis, and while holding down Ctrl key, pick FRONT datum plane.
Enter Value for rotation - 30°
Figure 3
Step 3:
From Insert pull down menu, select Blend -> Protrusion
For the Blend option, select Parallel -> Regular Sec -> Sketch Sec -> Done.
Smooth blend is used to for blending the three sections of the blade.
Smoth -> Done
Use DTM1 as sketching plane, and TOP datum plane as top reference. Pick the A_2 axis and TOP datum plane as the references.
Create THREE sections as shown in the Figures 4, 5 and 6.
Be sure to use to create points needed to locate the centerlines and location of the center of the circular part of the section.
Sketch the first section as shown in Figure 4. Click icon to continue, and from Sketch pull-down menu, select Feature Tools -> Toggle section.
Continue with sketching the second section as shown in Figure 5, click icon to continue, and from Sketch pull-down menu, select Feature Tools -> Toggle section.
And finally sketch the third section as shown in Figure 6. When you are done,
click icon to continue, Blind -> Done.
Enter 17.5 inches for the depth between sections.
Select OK button
Figure 4 – Section 1. Note that the arcs dimension is in diameter.
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