Tài liệu Parallel Blend OptionPro/ENGINEER docx

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. 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 Click the icon. 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 increment = 120 [Enter] Enter TOTAL number of instances in the direction (including original) = 3 Click on the . The blade pattern is created. Save the part. Step 6: Create a revolved cut in the hub as shown below. . select Blend -> Protrusion For the Blend option, select Parallel -> Regular Sec -> Sketch Sec -> Done. Smooth blend is used to for blending. ME-430 INTRODUCTION TO COMPUTER AIDED DESIGN Windmill – Parallel Blend Option Pro/ENGINEER Wildfire 2.0 Dr. Herli Surjanhata Figure 1 Step