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SE Sketch Basics Part 2

SE Sketch Basics Part 2 - Sketching in Solid Edge part 2 1...

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Sketching in Solid Edge - part 2 1 Learning Objectives: What are sketch constraints How to constrain a profile/sketch What are geometric relationships in Solid Edge How to view and delete geometric relationships How to add geometric relationships to sketches What methods for dimensioning are available in Solid Edge How to add dimensions How to modify dimensions
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Sketching in Solid Edge - part 2 A sketch is fully constrained when all sketch entities are completely defined. Simply creating a sketched entity does not constrain it Almost any sketched entity can be translated, rotated, or resized A completely constrained entity has a set of parameters that specify its location, orientation, and size. For instance: The parameters for a singe line are the planar coordinates of its endpoints or the planar coordinates of one endpoint together with its length and an angle from some reference datum The parameters for a circle are the planar coordinates of its center and its radius/diameter Once one entity is fully constrained, others may be constrained relative to the first. For instance, a second line may be partially constrained by defining it to be parallel or perpendicular to the first. Constraints consist of: geometrical relationships (parallel, perpendicular, tangent, etc.); and dimensions (linear and angular). 2
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Sketching in Solid Edge - part 2 Completely constrained profiles/sketches are important When entities are completely constrained, you have control over the behavior of the sketch when modifications are made. If entities aren’t fully constrained, modifications to the sketch can change the sketch in random ways that may destroy hours of work. For a novice, constraining sketches can be very frustrating because the constraints needed are not always obvious. Start small - fully constrain each entity as it is created. As you gain experience, you can add constraints as needed after the basic sketch has been created. 3
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Sketching in Solid Edge - part 2 4
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Sketching in Solid Edge - part 2 5 Hole Circle Axis of Revolution Rectangular Pattern Circular Pattern Smart Boss Location Virtual Component Structure Editor Component Image Construction Display Activate part Connect Concentric Horizontal/Vertical Collinear Parallel Relationship Perpendicular Lock Rigid Set Tangent Equal Symmetric Relationship Symmetry Axis Show/hide Relationships Drawing Acitivate/deactivate tools Relationships
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Sketching in Solid Edge - part 2 Geometric relationships Geometric relationships are operations applied to sketched entities that relate them to the other sketched entities using standard geometrical concepts (e.g., collinear, parallel, perpendicular, concentric, tangent, connected, etc.) They make it much easier to define a sketch - a few geometrical relationships can replace dozens of dimensions.
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