Chapter 3 Creating and Editing Sketched Features

1. Chapter 3Creating and Editing Sketched Features

2. Chapter 3 - Objectives • After completing this chapter, you will be able to perform the following: • Understand what a feature is • Use the Autodesk Inventor browser to edit parts • Extrude a sketch • Revolve a sketch • Edit features of a part • Edit the sketch of a feature • Make an active sketch on a plane • Create sketched features using one of three operations: cut, join, or intersect • Project edges of a part

3. Understanding Features • Describing Features • Sketch into a 3D feature • Base feature • Placed features • Edited, deleted, or reordered • Consumed and Unconsumed Sketches • Unconsumed sketch • not yet been used in a feature • Profiles • Feature consumes the profile • Consumed sketch

4. Use Browser to Create and Edit • Autodesk Inventor Browser • Default names • Extrusion1 • Revole1 • Locate parts and features • Resized while docked • Close Browser • Right-click • Double-click

5. Switching Environments • Switching Environments • Sketch & Part environment • Tab changes automatically • Commands available for current environment

6. Model Commands • Commands • Model environment • Model tab • Right-click in graphics window

7. Extruding a Sketch • Extruding a Sketch • Depth along Z-axis • Preview • Extrude dialog box • Profile • Multiple closed profiles • Solids • Operation • Extents • Distance value • Drection

8. Extruding a Sketch • Extruding a Sketch • Operation • Join = adds • Cut = removes • Intersect = common • Solid = new solid body • Extents • Type & Distance • Termination • How sketch will extrude • Distance • To Next • From To • To • All

9. Extruding a Sketch • Extruding a Sketch • Output • Solid • Surface • More • Taper • Alternate solution • Minimum solution • Infer iMates

10. Exercise 3-1 • Extruding a Sketch

11. Revolving a Sketch • Revolving a Sketch • Create cylindrical parts • Revolve sketch around a straight edge or axis • Shape • Profile • Axis • Operation • Join • Cut • Intersect • Solid • Extents • Full • Angle • Output • Solid • Surface

12. Revolving a Sketch • More Tab • Alternate solution • Minimum solution • Infer iMates

13. Revolving a Sketch • Centerlines & Linear Diameter Dimensions • Specify linear diameter dimensions • Quarter section • Place diameter dimensions • Changed to normal line to centerline

14. Exercise 3-2 • Revolving a Sketch

15. Editing a Feature • Editing a Feature • Feature consumes all the dimensions • To edit sketch or feature • Dimensions values • Taper • Operation • Termination • Output type • For base features, everything can be changed except join operation • Feature Priority

16. Editing a Feature • Editing a Feature’s Sketch • Add & remove objects • Adding geometry, lines, arcs, circles and splines • Delete geometry

17. Editing a Feature • 3D Grips • Used to push or pull the faces • Extruded feature • Revolved feature • Sweep feature • Red = Cut operation, • Green = Joined operation • Blue = Intersect operation

18. Editing a Feature • Editing a Feature • Renaming Features and Sketches • Default name • Locate • Descriptive to your design intent • Rename, slowly double-click • Feature Color • Feature Properties dialog box

19. Deleting a Feature • Editing a Feature • Deleting a Feature • Failed Features • Browser turns Red, an alert • Not successfully regenerated • Edit • Undo

20. Exercise 3-3 • Editing Features and Sketches

21. Sketched Features • Sketched Features • You sketch on a plane • Add or remove material from the part • Needs it’s own plane (planar face or based on a work plane)

22. Defining the Active Sketch Plane • Defining the Active Sketch Plane • Each sketch must exist on its own plane • Requirements to assign a plane • Inventor Part • Part active • Planar face or Work plane • Make a sketch active • Face Cycling • Dynamic face highlighting • Help select the correct face • Select Other tool • Time delay

23. Slice Graphics • Slice Graphics • Obscuring the view • Plane that is difficult to see • Temporarily slice away • Parts or assemblies

24. Exercise 3-4 • Sketch Planes

25. Projecting Part Edges • Projecting Part Edges • Building parts partially based on existing geometry • Reference faces, edges, or loops • Associative link • Direct Model Edge Referencing • Automatically project edges • Create dimensions and constraints • Control the automatic projection

26. Projecting Part Edges • Projecting Part Edges • Creating Reference Geometry • Move the cursor over an edge • Click an edge • Reference edges • Project Loop and Chain Option • Project Geometry tool • Edges • Loops • Faces • Break Link

27. Applying Your Skills Skill Exercise 3-1 Skill Exercise 3-2 Skill Exercise 3-3

28. Checking Your Skills • What is a base feature? • True_ False_ When creating a feature with the Extrude or Revolve command, you can drag the sketch to define the distance or angle. • Which objects can be used as an axis of revolution? • Explain how to create a linear diameter (diametric) dimension on a sketch. • Name two ways to edit an existing feature. • True_ False_ Once a sketch becomes a base feature, you cannot delete or add constraints, dimensions, or objects to the sketch. • Name three operation types used to create sketched features. • True_ False_ A cut operation cannot be performed before a base feature is created. • True_ False_ Once a sketched feature exists, its extents type cannot be changed. • True_ False_ By default geometry that is projected from one feature to a sketch will update automatically based on changes to the original projected geometry.