Learning How the Model History Tree WorksConstructive Solid GeometryCommon Part FeaturesPowerPoint PresentationChanging Feature NamesSlide 6Slide 7Slide 8Slide 9Slide 10Slide 11Slide 12Slide 13Slide 14Slide 15Dimensioning Caution:1SheetCourse: Introduction to Engineering Graphics and Visualizationcopyright 2011, Georgia Institute of TechnologyLearning How the Model History Tree Works•Inventor keeps track of the steps that are taken to create a solid – sketches, extrusion, revolution, etc.•These are recorded in the Model History Tree in the lower left corner of the screen•Touching the icons on the Tree highlights the feature or sketch in the drawing•Right clicking on the Tree icons brings up a menu allowing the feature or sketch to be edited2SheetCourse: Introduction to Engineering Graphics and Visualizationcopyright 2011, Georgia Institute of TechnologyConstructive Solid GeometryObjects are built from Primitive Solids–Join or Union–Cut or Difference–Intersection or Common Material3SheetCourse: Introduction to Engineering Graphics and Visualizationcopyright 2011, Georgia Institute of TechnologyCommon Part FeaturesBossSpotfaceCounterboreCountersink4SheetCourse: Introduction to Engineering Graphics and Visualizationcopyright 2011, Georgia Institute of TechnologyAll 3D features and the sketches usedto create them are part of the Model History Tree.5SheetCourse: Introduction to Engineering Graphics and Visualizationcopyright 2011, Georgia Institute of TechnologyChanging Feature NamesClick on name “Extrusion” twice, slowly, to change name to “Base”. Similarly “Sketch1” can become “Base Sketch”6SheetCourse: Introduction to Engineering Graphics and Visualizationcopyright 2011, Georgia Institute of TechnologySketches and Extrusions Can be RenamedWhen you click once on Base Sketch, the Sketch appears on the part.7SheetCourse: Introduction to Engineering Graphics and Visualizationcopyright 2011, Georgia Institute of TechnologyRight click on Base Sketch and select “Edit Sketch”Choose a Sketch and Edit8SheetCourse: Introduction to Engineering Graphics and Visualizationcopyright 2011, Georgia Institute of TechnologyThe Extrusion is removed to allow editing the Sketch.Note that all other features are 'grayed' out except for the Base Sketch9SheetCourse: Introduction to Engineering Graphics and Visualizationcopyright 2011, Georgia Institute of TechnologyYou can double click on the dimension and edit it. Here, 75 is changed to 85.The Base Sketch lengthis extended to 85.10SheetCourse: Introduction to Engineering Graphics and Visualizationcopyright 2011, Georgia Institute of TechnologyWhen you Finish Sketch, the figure has a new length andall of the features and their sketches are available for editing again.11SheetCourse: Introduction to Engineering Graphics and Visualizationcopyright 2011, Georgia Institute of TechnologyWhen you put your cursor on top of a feature name, the feature is highlighted12SheetCourse: Introduction to Engineering Graphics and Visualizationcopyright 2011, Georgia Institute of TechnologyA Right Click on “Base”brings up the option menu.Select Show Dimensions13SheetCourse: Introduction to Engineering Graphics and Visualizationcopyright 2011, Georgia Institute of TechnologyThe dimensions arenow shown on the isometric view of the Part.They can be edited just as the dimensionsin the sketch14SheetCourse: Introduction to Engineering Graphics and Visualizationcopyright 2011, Georgia Institute of TechnologySelecting Edit Feature brings back thefirst solid primitive that was created.Note: that the primitive is highlighted15SheetCourse: Introduction to Engineering Graphics and Visualizationcopyright 2011, Georgia Institute of TechnologyThe primitivesolid and itsdimensions are shown.The ExtrudeDialog boxis also shownChanging thedistance forthe extrusionchanges the solid.16SheetCourse: Introduction to Engineering Graphics and Visualizationcopyright 2011, Georgia Institute of TechnologyDimensioning Caution:Enter dimensions explicitly, even if they appear correct. CSG is not able to line up features if they are off by even
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