Tài liệu Parallel Blend OptionPro/ENGINEER docx

Herli Surjanhata Figure 1 Step 1: Create revolve protrusion for the hub as shown in Figure 2 below.. Figure 2 Revolve section of the hub Step 2: a new datum plane DTM1 through axis A

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:

a new datum plane DTM1 through axis A_2, and

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

centerlines and location of the center of the circular part of the section

Sketch pull-down menu, select Feature Tools -> Toggle section.

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

Figure 5 – Second Section shown in red

Figure 6 – The last section shown in red Note that Section 1 is the largest, and sketched in DTM1 Section 2 is the second largest and third section is smallest

representing the tip of the blade

Step 4:

Create a group named blade for patterning

From Edit pull down menu, select

Feature Operations

Group -> Create -> Local Group

Enter group name: blade

Continue with picking DTM1 and the first blade created in Step

3 The easy way to do is to select the features from the Model Tree

Done/Return -> Done

Step 5:

Pattern the local group

“blade” by selecting: Click -> Pick the

Group BLADE from the Model Tree

Select Dimensions tab

to expand it

Click 30° angle between FRONT &

DTM1 for Direction 1 Enter dimension

[Enter]

Enter TOTAL number of instances in the

direction (including original) = 3

The blade pattern is created

Save the part

Step 6:

Create a revolved cut in the hub as shown below

Figure 7 – The section for revolved cut

The resulted cut is shown below:

Step 7:

Create a hole at the center of the post with the diameter of 2 inches and 8 inches depth

Step 8:

Create ribs to strengthen the post

Select References -> Define

Pick DTM1 as sketching plane, select Top as Reference, and Top Orientation will

be automatically selected

Click Sketch

hidden line

Select references as shown below and click Close

Draw a horizontal line as shown

Pick these as references

Draw this line

Enter 1 as the thickness of the rib

The resulted rib is shown below:

Pattern the rib

Select Rib1 in the Model Tree

Add keyway, rounds and chamfer as shown below – use your own dimensions:

Section for keyway, and depth of the cut is 2 inches

Save the model