Chapter 4 Creating Placed Features

Chapter 4 - Objectives After completing this chapter, you will be able to perform the following: Create fillets Create chamfers Create holes Shell a part Create work axes Create work points Create work planes Create a UCS Pattern features

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

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 Distance and Angle 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 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

Holes Clearance Hole Standard Fastener Type Size Fit

Hole Tapped / NPT Hole Thread Type Size Designation Class Diameter Full Depth Left Hand Right Hand

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

Exercise 4-2 Creating Holes

Shelling Shelling Thin walls (thickness) Remove material (scooping out) Hollow inside Shell dialog box

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)

Exercise 4-3 Shelling a Part

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

Work Axis Creating a Work Axis Acts like a construction line Infinite in length Axis of rotation Create a Work Axis Filtered Options – Only select data that fits the selected option 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

Exercise 4-4 Creating Work Axes

Work Points Creating Work Points Point Grounded Work Point Filtered Options – Only select data that fits the selected option 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

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 Filtered Options - Only select data that fits the selected option

Work Planes Types of Work Planes Parallel to Plane through Point Midplane between Two Parallel Planes Midplane of Torus Angle to Plane around Edge Three Points Offset from Plane Two Coplanar Edges Tangent to Surface through Edge Tangent to Surface through Point Tangent to Surface and Parallel to Plane Normal to Axis through Point Normal to Curve at Point

UCS User Coordinate System Use like a 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

Feature Visibility Control visibility of Planes Axes Points Construction surfaces Sketches UCS Turn off visibility of individual objects

Exercise 4-5 Creating Work Planes and a UCS

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 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.

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.

Exercise 4-6 Creating Rectangular Patterns

Exercise 4-7 Creating Circular Patterns

Exercise 4-8 Creating a Pattern Along a Nonlinear Path

Applying Your Skills Skill Exercise 4-1 Skill Exercise 4-2

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. 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__ The options for creating work features filter out geometry that is not valid for the selected option. 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.