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Chapter 4 Creating Placed Features
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Chapter 4 - Objectives After completing this chapter, you will be able to perform the following: Create fillets Create chamfers Create holes Shell a part Add face draft to a part Create work axes Create work points Create work planes Create a UCS Pattern features
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Fillets Fillets add material Rounds remove material Fillet dialog box
Constant Variable Setbacks Face Full Round Edit fillet’s type & radius
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Fillets Constant Tab Select Edge and Radius
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
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Fillets Constant Tab More options Roll along sharp edges
Rolling ball where possible Automatic edge chain Preserve all features
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Fillets Variable Tab Different start and end radius Edges Point Radius
Position Smooth Radius Transition
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Fillets Setbacks Tab Transition from a vertex
Three or more filleted edges meet at a vertex Fillets can have different radius
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Fillets Face Fillet Select two or more faces
Faces do not need to be adjacent Consume features
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Fillets Full Round Fillet tangent to selected faces Select three faces
Faces do not need to be adjacent
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Chamfers Chamfers Beveled edges Interior & exterior edges
Single or multiple selection Edit type or distance Method Distance Distance and Angle Two Distances
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Chamfers Chamfers Method Distance Distance and Angle Two Distances
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Chamfers Chamfers Edge and Face Edge Chain and Setback
Flip Distance and Angle Distance Angle Edge Chain and Setback Edge Chain Setback Preserve All Features
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Exercise 4-1 Creating Fillets and Chamfers
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Holes Holes Hole Type Holes dialog box Drilled Counterbore Spotface
Countersink Hole Type Simple Hole Tapped Clearance Hole NPT Holes dialog box Placement Size Drill Point Termination
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Holes Holes Placement Concentric From Sketch On Pont Linear
Select Face Circular Face or Edge On Pont Work Point Positioned to an axis, edge or work plane From Sketch Hole Center Sketched Entities Linear Select Face 1st Reference Edge 2nd Reference Edge
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Hole Tapped / NPT Hole Thread Type Size Designation Class Diameter
Full Depth Left Hand Right Hand
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Holes Clearance Hole Standard Fastener Type Size Fit
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Exercise 4-2 Creating Holes
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Shelling Shelling Thin walls (thickness)
Remove material (scooping out) Hollow inside Shell dialog box
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Shelling Shelling Remove Faces Thickness Direction
Inside Outside Mid-plane Unique Face Thickness Different thickness Specific face thickness More button Troubleshooting: In the case of shelling failures, first try reducing the thickness (much smaller value). Second: remove complex modeling features that can be applied later (such as variable radius fillets or complex fillets with corner blends)
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Exercise 4-3 Shelling a Part
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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
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Face Draft Face Draft Fixed Edge Fixed Plane 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
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Exercise 4-4 Creating Face Drafts
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Work Features Work Features Special construction features
Help position & define new features Parametrically attached Types Work Planes Work Axes Work Points Different situations In Line work features may also be created to assist in the construction of other work features such as work axes and planes (i.e. creating work points in the context of the work plane feature to help in construction) This is also reflected in the Browser structure
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Work Axis Creating a Work Axis Acts like a construction line
Infinite in length Axis of rotation Create a Work Axis Click a cylindrical face Click two points Click a linear edge Click a work point or sketch point and a plane or face Click two nonparallel planes or faces to create a work axis at their intersection Click a work point and a surface to create a work axis that is normal to the surface and passes through the work point Click a point or work point and a linear edge to create a work axis that goes through the point and that is parallel to the edge The 3d move/rotate tool in the graphics screen allows the user to directly interact with it. For most situations, the user should be able to use just the 3d move/rotate tool and the context menu to get the job done. The 3d Move/Rotate functionality for grounded work points is only available in the Part Environment and not in the Assembly Environment (unless activating a part in place) The increment in which the 3d tool snaps is set in the Document Settings -> Modeling tab
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Exercise 4-5 Creating Work Axes
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Work Points Creating Work Points Grounded Work Point
Positioned in 3D space Not associated Remains in the specified location 3D Move/Rotate dialog box The 3d move/rotate tool in the graphics screen allows the user to directly interact with it. For most situations, the user should be able to use just the 3d move/rotate tool and the context menu to get the job done. The 3d Move/Rotate functionality for grounded work points is only available in the Part Environment and not in the Assembly Environment (unless activating a part in place) The increment in which the 3d tool snaps is set in the Document Settings -> Modeling tab
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Work Planes 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 – many solution Visual Syllabus
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Work Planes Creating Work Planes Types of Work Planes Angled 3-points
Edge and face normal Edge and tangent Offset Point and face normal Point and face parallel Tangent and face parallel Tangent and edge or axis 3-points 2-edge or 2-axis Through line endpoint, perpendicular to line Normal to arc at a point on the arc Normal to a spline or work curve at a point on the spline or curve Midway between two parallel planes
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UCS User Coordinate System
Use like work plane Place on existing geometry Position with absolute coordinates No limit to the number of UCSs Constrain UCS to UCS Contains 3 planes 3 Axes Center point
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Feature Visibility Control visibility of Planes Axes Points
Construction surfaces Sketches UCS Turn off visibility of individual objects
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Exercise 4-6 Creating Work Planes and a UCS
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Patterns Patterns Duplicate the feature multiple times
Distance or angle Types Rectangular and circular Suppressed Child - parent relationship Editing
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Patterns Rectangular Patterns Rectangular pattern dialog box
Direction 1 Direction 2 Options - More button Start Termination Orientation
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Patterns Linear Pattern Pattern Along a Path
Helix, ellipse, spline, series of curves 2D or 3D For the most predictable results when patterning along a path, have the path start at the location and alignment of the feature being patterned.
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Patterns Circular Patterns Circular Pattern dialog box Placement
Creation Method Positioning Method Flip For the most predictable results when patterning along a path, have the path start at the location and alignment of the feature being patterned.
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Exercise 4-7 Creating Rectangular Patterns
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Exercise 4-8 Creating Circular Patterns
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Exercise 4-9 Creating a Pattern Along a Nonlinear Path
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Applying Your Skills Skill Exercise Skill Exercise 4-2
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Checking Your Skills True_ False_ When creating a fillet feature that has more than one selection set, each selection set appears as an individual feature in the browser. In regard to creating a fillet feature, what is a smooth radius transition? True_ False_ When you are creating a fillet feature with the All Fillets option, material is removed from all concave edges. True_ False_ When you are creating a chamfer feature with the Distance and Angle option, you can only chamfer one edge at a time. True_ False_ When you are creating a hole feature, you do not need to have an active sketch. What is a Point, Center Point used for? True_ False_ A part may contain only one shell feature. When you are creating a face draft feature, what is the definition of pull direction? True_ False_ The only method to create a work axis is by clicking a cylindrical face. True_ False_ You need to derive every new sketch from a work plane feature. Explain the steps to create an offset work plane. True_ False_ You cannot create work planes from the default work planes. True_ False_ A UCS can only be placed on existing geometry. True_ False_ When you are creating a rectangular pattern, the directions along which the features are duplicated must be horizontal or vertical. True_ False_ When you are creating a circular pattern, you can only use a work axis as the axis of rotation.
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