Chapter 7: Selecting Features
Tutorial: Creating a Wire-Formed Part
Follow these steps to create a wire-formed part:- Open a new part using an inch-based template.
- Open a sketch on the Right plane and sketch a circle that is centered on the Origin
with a diameter of 1.500 inches. - Create a Helix, Constant Pitch, Pitch, and Revolution, where the Pitch = .250 inches,
Revolutions = 5.15, and Start Angle = 0. The Helix command is found at Insert ➪
Curve ➪ Helix/Spiral. - Create a sketch on the Front plane, as shown in Figure 7.70. Pay careful attention
when adding the construction line, as shown. This line is used in the next step to refer-
ence the end of the arc.
FIGURE 7.70
The results up to Step 4- Open a sketch on the Right plane and use Figure 7.71 to add the correct relations
and dimensions. Be aware that the two sketches shown are on different sketch planes,
which makes it difficult to depict in 2D. You can also open the part from the CD-ROM
for reference. - Exit the sketch and create a projected curve. The Projected Curve function is found at
Insert ➪ Curve ➪ Projected Curve. Use the Sketch on Sketch option. - Open a 3D sketch. You can access a 3D sketch from the Insert menu. Select the helix
and click Convert Entities on the Sketch toolbar. Then select the projected curve and
click Convert Entities again. You now have two sections of a 3D sketch that are uncon-
nected in space.