## Tuesday, 22 July 2014

### Surface Modeling - Fan Blades

 In this tutorial you learn: How to model a fan blades using the surfacing commands in Solid Edge: How to use the Extrude Surface command How to create an Intersection Curve How to create a Bounded Surface Thicken surfaces to make solids It is assumed that you are familiar with the basics of Solid Edge Part modeling. Full index of Solid Edge surfacing tutorials on this blog is here.

 Create the hub Start with creating the hub for the blades. Drawing the profile - Top View Start with creating a sketch in the the x-y plane. See figure. Drawing the profile - Side View Using the Curve      tool, create a curve as shown in figure. Drawing the profile - Side View Plane This curve is in a plane parallel to the y-z plane as seen from top. See figure. Drawing the profile - Isometric View In isometric view, the curve looks as shown in figure. Extruded Surface Click the Extruded Surface      tool on the Surfacing toolbar. Click Select from Sketch      on the ribbon bar. Select the side view profile as shown. Click accept      on the ribbon bar. Specify the direction towards the hub and click to create the surface as shown in figure. Extruded Surface - Top View Profile Similarly, create another extruded surface from the top view profile. See figure. This time, click Symmetric Extent      on the ribbon bar. Specify the extent of the extruded surface as shown.Click Finish on the ribbon bar. Intersection Curve - Select Set 1 Click the Intersection Curve    tool on the Surfacing toolbar. Select the side view curve as the select set 1. Intersection Curve - Select Set 2 Select the top view curve as the select set 2. Intersection Curve - Done An intersection curve will be formed at the intersection of the two surfaces. The Bounded Surface Click the Bounded Surface command from the Surfacing toolbar. Select the four edges of the intersection curve. Click Finish on the ribbon bar. A surface will be formed from the four edges. Careful observation from different views will reveal that the blade is a twisted one and not flat. Surface to Solid Click the Thicken      tool on the Features toolbar. The Thicken tool is in the same flyout as the Thin Wall and Thin Region tools. Select the bounded surface to thicken. Use a small value of 2 mm to thicken in any direction. Round off sharp edges and pattern the blade. Latest offerings from www.CADVertex.com