Thiết kế flash - Part creation

Part CreationSketched FeaturesSketched features include:ExtrudeRevolveSweepLoft (Blend)Others (e.g., Rib, Coil)Sketched Feature OperationsBoolean operations are included as part of the feature construction. Operations include:Join (Union)Cut (Subtract)IntersectSketched Feature TerminationsTo Next – extrude to next surfaceFrom To – extrude from one existing surface to anotherTo – extrude to selected surfaceAngle – revolve through a certain angleFull – revolve 360 degreeThrough (All) – extrude all the way through a partBlind (Distance) – extrude to a fixed depthBase FeatureThe base feature is the first model feature to be createdOther features are created using constraints that locate them relative to the base featureBase Feature Adding Sketched FeaturesEstablish a sketch plane (share sketch)SketchConstrainSome constraints used to relate new feature to base featureCreate FeatureExtrude, JoinAnother Sketched FeatureNew sketch planeCreate FeatureExtrudeCutSketchConstrainDimensionSketched Feature Requiring a Work PlaneIf there are no convenient faces that can be used to orient a sketch plane, a work plane must be createdSketch, constrainCreate featureExtrude, JoinPlaced (Referenced) FeaturesPlaced features are features that do not require a sketchExamples include holes, chamfers, fillets and shellsNOTE: In Inventor, holes require that center points be placed on sketch plane prior to feature creationParent-Child RelationshipsParent-child relationship refers to way in which one feature is derived from, and consequently dependent upon another featureChild must appear below parent in feature treeBase feature is parent to all other featuresParent deleted  child deletedFeature ModificationsPart CreationCul De Sac