Issue link: https://resources.rand3d.com/i/1500974
Part Design Overview © 2023, ASCENT - Center for Technical Knowledge® 1–3 Sketch Support What is the best sketch support plane? It is important to carefully consider this reference, because it establishes parent-child relationships. Do not randomly select a sketch support simply because you think you must. This might create an unwanted parent-child relationship. Whenever possible, use a default reference plane to minimize the number of unwanted parent-child relationships. The selection of this reference also affects the default view of the model. Sketcher References Which entities should be selected as sketcher references? As you dimension and constrain your sketch, you select references that determine how the sketch reacts to modification. References can be removed and added as required in each sketch. Select references that incorporate your design intent. Positioned Sketch The use of a positioned sketch is highly recommended. It enables you to locate the origin of the sketch so that it updates correctly. • Standard sketches are also called Sliding sketches. When the model is modified, it can reposition itself unexpectedly because its origin is not constrained. • Positioned sketches enable you to develop the required parent-child relationships between features. For example, if the vertical axis of the sketch is constrained to a specific line or edge, the relationship is maintained throughout the design changes. • If you need to translate, copy, or paste the sketch to another location, it can be done more easily with a positioned sketch. Dimensions Which dimensions are required to drive the design? CATIA is associative. You can take advantage of this with an intelligent dimensioning scheme. Place dimensions so that they enable modifications. The dimensions that are automatically added to the sketch by Auto Constraint are based on the references and sketched geometry that were originally selected. Additional dimensions can be added as required to capture the required design intent. Which dimensions on the part would change? Always check that the dimensioning scheme works correctly by flexing the model. Test as many what if scenarios as possible. Sample provided by ASCENT for review only All copying and reuse strictly forbidden.