Model a paper clip. The sweep function allows the user to extrude a closed profile along a path. The path may be open or closed. The profile and the path must exist as two separate sketches. Create a sketch to represent the path (the curving spiraling line along which the profile will be swept). The dimensions of the geometry are not important. Just try to approximate a real paperclip. Finish the sketch. Select Workplane and pick the point that is at the end of the path. Click again to the workplane. “set” Apply a sketch to the plane and then project the point at the end of the path to the sketch plane. Draw a circle centered on the projected point and finish the sketch. Use the Sweep function to extrude the circle along the existing path to create the form of a paper clip. Note that two sketches are necessary to create a swept feature a path and a profile. – Save the file to your Practice project folder as a Paperclip.ipt. Conclusion What 3D CAD functions could be used to create a wire coat hanger? For each of the following, sketch a 2D shape and an axis of rotation that you could use to model each of the following solid forms using the Revolve function within 3D modeling software. Dimension each sketch and indicate the axis of rotation that you would use. You may use software to check your answers. A solid cylinder with a diameter of 3.5 in. and a height of 7 in. Be sure to dimension the shape. A solid sphere using the Revolve function. What rotation angle would you use? For each of the following, describe the solid form that would result from rotating the given shape about the axis of rotation by the given rotation angle. Then sketch the resulting 3D shape and indicate important dimensions. a.
Model a paper clip. The sweep function allows the user to extrude a closed profile along a path. The path may be open or closed. The profile and the path must exist as two separate sketches. Create a sketch to represent the path (the curving spiraling line along which the profile will be swept). The dimensions of the geometry are not important. Just try to approximate a real paperclip. Finish the sketch. Select Workplane and pick the point that is at the end of the path. Click again to “set” the workplane. Apply a sketch to the plane and then project the point at the end of the path to the sketch plane. Draw a circle centered on the projected point and finish the sketch. Use the Sweep function to extrude the circle along the existing path to create the form of a paper clip. Note that two sketches are necessary to create a swept feature – a path and a profile. Save the file to your Practice project folder as a Paperclip.ipt. Conclusion What 3D CAD functions could be used to create a wire coat hanger? For each of the following, sketch a 2D shape and an axis of rotation that you could use to model each of the following solid forms using the Revolve function within 3D modeling software. Dimension each sketch and indicate the axis of rotation that you would use. You may use software to check your answers. A solid cylinder with a diameter of 3.5 in. and a height of 7 in. Be sure to dimension the shape. A solid sphere using the Revolve function. What rotation angle would you use? For each of the following, describe the solid form that would result from rotating the given shape about the axis of rotation by the given rotation angle. Then sketch the resulting 3D shape and indicate important dimensions. a.
5.5.a.A-CADModelFeatures.docx