Ken YoussefiME Dept. 1 Surface Modeling in SW Open sketch (spline) Starting with a sketch, you can create a surface using Extrude, Revolve, Loft, Boundary Surface, planar, and Fill.

Ken YoussefiME Dept. 2 Surface Modeling in SW – Ruled Surfaces Extrusion direction Profile Extruded surface Revolved surface Axis of rotation

Ken YoussefiME Dept. 3 Surface Modeling in SW Guide Swept surface using a Guide

Ken YoussefiME Dept. 4 Surface Modeling in SW - Ruled Surfaces Guide 1 Guide 2 Loft surface, no guide curve Loft surface using two guide curves.

Ken YoussefiME Dept. 5 Surface Modeling in SW- Boundary Surface Sketch1, Direction 2 Sketch2, Direction 2 Sketch5, Direction 1 Open loop 3D sketch, Direction 1 Four curves defining the boundary of the surface, Coon’s surface Make sure all curves are intersecting, then select curves for directions 1 and 2

Ken YoussefiME Dept. 6 Surface Modeling in SW- Boundary Surface Boundary surface The order of direction has no effect on the surface shape Direction 2

Ken YoussefiME Dept. 7 Surface Modeling in SW- Boundary Surface Direction 1

Ken YoussefiME Dept. 8 Surface Modeling in SW- Boundary Surface Boundary Surface option using profiles and directions. This results in the same surface as Loft, smoother surface appearance. Single curve to a point in one direction Direction 1 Direction 2

Ken YoussefiME Dept. 9 Surface Modeling in SW- Fill Surface

Ken YoussefiME Dept. 10 Surface Modeling in Unigraphics (NX) This command creates a sheet or solid body through a set of up to 150 section strings. A section string can consist of a single object or multiple objects, and each object can be a curve, a solid edge, or a solid face. Through Curves is similar to a Ruled Surface, except that you can specify more than two section strings. Through Curves option

Ken YoussefiME Dept. 11 Surface Modeling in Unigraphics (NX) Desired curve sections

Ken YoussefiME Dept. 12 Surface Modeling in Unigraphics (NX) Through Curve option This command creates a body from sets of primary and cross strings. Strings in each set must be roughly parallel to each other and non-intersecting. Primary strings must be roughly perpendicular to crossing strings Cross strings Primary strings

Ken YoussefiME Dept. 13 Surface Modeling in Unigraphics (NX) Sample of a Multiple Triangular Patch Surface N-Sided Surface option This option lets you build a surface with an unrestricted number of curves or edges that form a simple, open or closed loop, and assign continuity to outside faces. You can remove holes in surfaces that are not four-sided. Shape control options are available to refine sharpness at center point, while maintaining continuity constraints.

Ken YoussefiME Dept. 14 Surface Modeling in Unigraphics (NX) You can use the Section option to construct bodies through sections that you define using conic construction techniques. You can think of a section free form feature as an infinite family of section curves lying in prescribed planes, starting and ending on, and passing through, certain selected control curves. Additionally, the system obtains conic end slopes directly from the control curves, and uses a continuous 2D conic shape parameter to vary the fullness of the sections along the body. A typical application for using a section free form feature would be in the design of an aircraft fuselage. The control curves would run along the top and along the side of the fuselage, and the section curves would lie in planes perpendicular to the centerline. Another example would be in creating an automobile body panel design, where you know the start and end edges and slopes, and a smooth curve without inflections is required

Ken YoussefiME Dept. 15 Surface Modeling in Unigraphics (NX) Section Body Dialog Options ends- apex- shoulder The feature starts on the first curve selected, passes through an interior curve known as the shoulder curve, and ends on the third curve. The slope at each end is defined by a selected apex curve. See ends-apex-shoulder for details. ends- slopes- shoulder The feature starts on the first curve selected, passes through the shoulder curve, and ends on the third curve. Slopes are defined at the start and end by two independent slope control curves. See ends-slopes-shoulder for details. fillet- shoulder The feature starts on the first curve selected, is tangent to the first body selected, ends on the second curve, is tangent to the second body, and passes through the shoulder curve. See fillet-shoulder for details. three- points-arc Lets you create a section free form feature by selecting a starting edge curve, an interior curve, an end edge curve, and a spine curve. See three-points- arc for details. ends- apex-rho The feature starts on the first curve selected and ends on the second curve. The slope at each end is defined by a selected apex curve. The fullness of each conic section is controlled by the corresponding rho value. See ends-apex-rho for details.

Ken YoussefiME Dept. 16 Surface Modeling in Unigraphics (NX) Use the Studio Surface command to create swept or lofted surfaces from a network of section strings, or a network of section strings and up to three guide strings. Section string (1), guide strings (2), and resulting studio surface You can modify a Studio Surface without rebuilding it by adding, removing, reordering, or swapping section and guide strings. Studio Surface also lets you specify constraining faces and continuity, edit surface alignment points, and control the transitions between surface sections. Three section strings and resulting studio surface