Chapter 4Creating Placed
Features
• After completing this chapter, you will be able to perform the following: – Create fillets – Create chamfers – Create holes – Create internal and external threads – Shell a part – Add face draft to a part – Create work axes – Create work points – Create work planes – Pattern features
Chapter 4 - Objectives
Fillets• Fillets add material• Rounds remove material– Fillet dialog box
• Constant • Variable• Setbacks• Face• Full Round
– Edit fillet’s type & radius
Fillets• Constant Tab
– Same radius from beginning to end
– Single set or multiple set
• Select Edge and Radius– Preview image
• Select Mode– Edge– Loop– Feature– All Fillets– All Rounds
Fillets• Constant Tab
– More options – Roll along sharp edges– Rolling ball where possible
– Automatic edge chain– Preserve all features
Preserve All Features
Fillets• Variable Tab
– Different start and end radius
– Edges– Point– Radius– Position– Smooth Radius Transition
Fillets• Setbacks Tab
– Transition from a vertex– Three or more filleted edges meet at a vertex
– Fillets can have different radius
Fillets• Face Fillet
– Select two or more faces
– Faces do not need to be adjacent
– Consume features
Fillets• Full Round
– Fillet tangent to selected faces
– Select three faces
– Faces do not need to be adjacent
Chamfers•Chamfers
–Beveled edges–Interior & exterior edges–Single or multiple selection–Edit type or distance–Method
•Distance•Distance and Angle•Two Distances
Chamfers• Chamfers
– Method• Distance• Distance and Angle
• Two Distances
Chamfers•Chamfers
–Edge and Face•Edge•Face•Flip
–Distance and Angle•Distance•Angle
–Edge Chain and Setback•Edge Chain•Setback•Preserve All Features
Exercise 4-1• Creating Fillets and Chamfers
Holes• Holes
– Drilled– Counterbore– Spotface– Countersink
• Hole Type• Simple Hole• Tapped• Clearance Hole• NPT
• Holes dialog box• Placement• Hole Type• Size• Drill Point• Termination
Holes•Holes
–Placement•From Sketch
–Hole Center–Sketched Entities
•Linear–Select Face–1st Reference Edge–2nd Reference Edge
•Concentric–Select Face–Circular Face or Edge
•On Pont–Work Point–Positioned to an axis, edge or work plane
Hole• Tapped / NPT Hole– Thread Type– Size– Designation– Class– Diameter– Full Depth– Left Hand– Right Hand
Holes• Clearance Hole– Standard– Fastener Type– Size– Fit
Exercise 4-2• Creating Holes
Threads•Threads
–Internal and external–Graphical representation–Thread feature–Hole tool vs. Thread tool–Excel spreadsheet
•C:\Program Files\Autodesk\Inventor 2008\Design Data\Thread.xls
•Standards
Threads•Threads
–Location Tab•Face•Display in Mode•Thread Length
–Full Length–Flip–Length–Offset
–Specification Tab•Thread Type•Nominal Size•Pitch•Class•Right hand or Left hand
Exercise 4-3• Creating Threads
Shelling• Shelling
– Thin walls (thickness)
– Remove material (scooping out)
– Hollow inside– Shell dialog box
• Shelling– Remove Faces– Thickness– Direction
• Inside• Outside• Mid-plane
– Unique Face Thickness• Different thickness
• Specific face thickness
• More button
Shelling
• More TabWhen no precise shell solution exists, allows a deviation from the specified thickness – Mean– Never too thin– Never too thick– Optimized– Specify Tolerance
Shelling
Exercise 4-4• Shelling a Part
Face Draft• Face Draft
– Feature that applies an angle
– Internal or external face
– Face Draft dialog box• Fixed Edge• Fixed Plane• Pull Direction
– Direction– Flip
• Faces– Arrow displayed & direction
• Draft Angle
Face Draft• Face Draft
– Fixed Edge•Pull Direction•Select near edge to start draft
– Fixed Plane•Select planar face or work plane
•Flip plane if needed
•Select planes to apply draft
Exercise 4-5• Creating Face Drafts
Work Features• Work Features
– Special construction features
– Help position & define new features
– Parametrically attached
– Types• Work Planes• Work Axes• Work Points
– Different situations
Work Features•Creating a Work Axis
–Acts like a construction line
–Infinite in length–Axis of rotation
•Creating Work Points–Grounded Work Point
• Positioned in 3D space
• Not associated• Remains in the specified location
–3D Move/Rotate dialog box
Exercise 4-6
• Creating Work Axes
Work Features• Creating Work Planes
– Understand when you need to create a work plane
– Rectangular plane– Parametric – Larger than the part– Edited and deleted like any other feature
– Methods – lots of solution• Visual Syllabus
Work Features• Creating Work Planes– Types of Work Planes• Angled work plane• Offset work plane• Tangent work plane• 3-point work plane• 2-edge or 2-axis work plane
• Midway between two parallel planes
– Feature Visibility• Off or On
Exercise 4-7
• Creating Work Planes
Patterns•Patterns
–Duplicate the feature multiple times–Distance or angle–Types
•Rectangular and circular–Suppressed–Child - parent relationship–Editing
Patterns• Rectangular Patterns– Rectangular pattern dialog box• Direction 1• Direction 2
– Options - More button• Start• Termination• Orientation
Patterns• Circular Patterns– Circular Pattern dialog box•Placement•Creation Method•Positioning Method
•Flip• Linear Pattern
– Pattern Along a Path•Ellipse, spline, series of curves
•2D or 3D
Exercise 4-8• Creating Rectangular Patterns
Exercise 4-9• Creating Circular Patterns
Exercise 4-10
• Creating Path Patterns
Applying Your Skills
• Skill Exercise 4-1• Skill Exercise 4-2
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