Pick FRONT datum plane as the sketching plane for the sweep profile – click Okay, and TOP datum plane as the Top reference. Begin with sketching a vertical centerline along RIGHT datum plane. Then sketch an inclined line as shown below | NUT ME-430 INTRODUCTION TO COMPUTER AIDED DESIGN Variable Pitch Helical Extension Spring Pro ENGINEER Wildfire Dr. Herli Surjanhata Create a part named extension_spring and begin with three default datum planes. You don t need to change the Units since inches is the Pro ENGINEER default units. Create a Protrusion using the Helical Sweep options. File Edit View Insert Analysis Info Applications Tools Window Help EXTENSION. RIGHT TOP FRONT IT Hole. @ Shell. S Rib Draft. Round. Chamfer From Insert pull-down menu select Helical Sweep - Protrusion Accept all other default Attributes. Constant - Thru Axis - Right Handed - Done PRT_CS t Sweep Insert Her Blend tp1 Extrude. . t Revolve. Swept Blend Helical Sweep Protrusion. . Boundary Blend. . Variable Section Sweep. iThin Protrusion. Inserts a helical sweep protrusion Select Done 1 Pick FRONT datum plane as the sketching plane for the sweep profile - click Okay and TOP datum plane as the Top reference. Begin with sketching a vertical centerline along RIGHT datum plane. Then sketch an inclined line as shown below Line Rectangle Circle 3-Point Tangent End Centerline Fillet Dimension Note To activate the drawing tools right-click the graphics are then select the appropriate tool . select Centerline or Line etc. Or use the tool 2 Note that start point of the line is on TOP datum plane and inclined to the right. Redimension and Modify the dimension of the profile as shown above. To obtain diametrical dimension do the following Left-click end point of line at the bottom - left-click center line - Left-click end point of line at the bottom again - middle-click to accept the position of the dimension. Click this icon to continue. Dimension modifications successfully completed Enter pitch value 1 Enter for the pitch.
