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SolidWorks Session 2. Ferdowsi University of Mashhad Dr. Behnam Moetakef Imani Winter 2011. What is Sketch?. The sketch is the basis for a 3D model. You can create a sketch on any of the default planes (Front Plane, Top Plane, and Right Plane). Sketch Snaps . Circle. Line & Point.
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SolidWorks Session 2 Ferdowsi University of Mashhad Dr. Behnam Moetakef Imani Winter 2011
What is Sketch? • The sketch is the basis for a 3D model. You can create a sketch on any of the default planes (Front Plane, Top Plane, and Right Plane)
The Status of a Sketch • Under defined • Additional dimensions or relations are required. • Under defined sketch entities are blue (by default). • Fully defined • No additional dimensions or relationships are required. • Fully defined sketch entities are black (by default). • Over defined • Contains conflicting dimensions or relations, or both. • Over defined sketch entities are red (by default).
Coincident • A point and a line, arc, or ellipse. • The point lies on the line, arc, or ellipse • Merge Points • Two sketch points or endpoints. • The two points are merged into a single point.
Select the sketch plane Sketch the 2D profile Extrude the sketch Resulting base feature To Create an Extruded Base Feature: • Select a sketch plane. • Sketch a 2D profile. • Extrude the sketch perpendicular to sketch plane.
To Create a Revolved Base Feature: • Select a sketch plane. • Sketch a 2D profile. • Sketch a centerline (optional). • Revolve the sketch arounda sketch line or centerline. Centerline (optional)
To Create a Sweep Feature • Sketch a Profile • Sketch a Path • Sweep the profile along the path
To Create a Loft Feature • Sketch a Series of Profiles • To Create a Solid Model Use the loft feature
Sketch Complexity • Complex sketches rebuild faster. Sketch fillets can be recalculated much faster than fillet features, but complex sketches can be harder to create and edit. • Simple sketches are more flexible and easier to manage. Individual features can be reordered and suppressed, if necessary.
Design Intent • Design Intent or can be said “design for change.” • Design Intent means that when you put the parametric sketch relations together with the feature intelligence, you can build models that react to change in predictable ways. • This gives you a great deal of control over changes. • An example of Design Intent could be a written statement that describes general aspects that help define the design of a part, such as: • “This part is symmetrical, with holes that line up with Part A • and thick enough to be flush with Part B.” • From this description, and the surrounding parts, it is possible to re-create the part in such a way that if Part A or Part B changes, the part being described updates to match.
Editing or deleting • When editing or repairing relations, it is considered best practice to edit rather than delete. • Deleting often causes additional problems further down the tree. • Many users find it tempting to delete anything that has an error on it.
Selecting Display/Delete Relations • تمرین • کلیه مهره های شطرنج و صفحه آنرا مدل نمایید.
