1. Chapter 7 Advanced Part Modeling Techniques

2. Chapter 7 - Objectives
After completing this chapter, you will be able to perform the following:
Create ribs, webs, and rib networks
Emboss text and profiles
Create sweep features
Create coil features
Create loft features
Split a part or split faces of a part
Bend a part

3. Chapter 7 - Objectives
After completing this chapter, you will be able to perform the following:
Reorder part features
Mirror model features
Suppress features of a part
Create a derived part based on another part or an assembly
Shrinkwrap an assembly
Create plastic and cast features

4. Rib and Web Features Rib and Web Features
Used to reinforce or strengthen features
Additional support and minimal weight are required
mold and cast parts
Ribs, webs, and rib networks
Single, open, unconsumed profile
Taper
Design features to be robust (similar to open profiles). Extending the profile and using To Next terminations add flexibility into the part model and these features are less likely to fail or run into problems as the design is revised.

5. Rib and Web Features Rib and Web Features Rib dialog box Shape
Profile
Direction
Thickness
Edit Box
Flip Buttons
Extents
To Next
Finite
Extend Profile
Taper

6. Rib and Web Features Creating Rib and Web Rib Networks
Use multiple intersecting or nonintersecting sketch objects
Thickness is applied to all objects
Rib Network as a
Profile
Ribs
Webs

7. Exercise 7-1
Creating Ribs and Webs

8. Emboss Text and Closed Profiles
Emboss Text / Closed profile
Embossed (raised)
Engraved (cut)
Shape or Text
Geometry Text
On a plane or a curved face
Step 1 - Creating Text
Step 2 - Emboss Text

9. Exercise 7-2
Creating Text and Emboss Features

10. Sweep Features Sweep Features Requires two unconsumed sketches
Sweep dialog box
Profile
Path
Operation buttons
Solid / Surface
Taper
Type
Orientation

11. Sweep Features
Profile
Path
Orientation

12. Sweep Features
Type - Path & Guide Rail
Profile Scaling
X & Y X
None

13. Sweep Features
Type - Path & Guide Surface
Path
Profile
Guide Surface

14. Exercise 7-3
Creating Sweep Features

15. 3D Sketching Defining a 3D path Lip or routing Work points
Model edges/vertices
3D Sketch Environment
2D & 3D curves

16. Sweep Features 3D Sketching 3D Path From Existing Geometry Define path
Use existing edges
Include Existing Geometry
Projecting part edges, vertices, and geometry

17. 3D Sketching 3D Sketch From Intersection Geometry
Defined by a combination
Planar or nonplanar part face
Surface face or quilt
Objects
Work plane
Multiple faces/surfaces may be used in the second selection set to create the 3D intersection curve.
3D Intersection Curves are similar in concept to projected loops within 2D sketches… If the geometry is modified that creates the curve, the intersection will be recomputed and update the 3d intersection curve.

18. 3D Sketching Project to Surface Project Along Vector
Project to Closest Point
Wrap to Surface
Break Link
Multiple faces/surfaces may be used in the second selection set to create the 3D intersection curve.
3D Intersection Curves are similar in concept to projected loops within 2D sketches… If the geometry is modified that creates the curve, the intersection will be recomputed and update the 3d intersection curve.

19. 3D Sketching Constructed Paths Connecting Auto-Bend Work points
3D line
Auto-Bend
Radius

20. Sweep Features 3D Sketching Work Points Grounded Work Points
Constraints
3D Lines and Splines
Precise Input

21. Exercise 7-4
3D Sketch – Sweep Features

22. Coil Features Coil Features - Helical, springs or coil shapes
Profile
Axis
Flip
Rotation
Operation
Coil Size
Type
Pitch
Revolution
Height
Taper

23. Coil Features Coil Features Coil Ends Using base & secondary feature
Start
End
Transition Angle
Flat Angle
Using base & secondary feature

24. Loft Features Loft Features
Blends a shape between two or more sections
Area Loft
Complex shapes
Plastic or molded parts
Sections
Rails
Center Line
Points
Curves

25. Loft Features Curves Sections Rails Center Line Output Operation
Closed Loop
Merge tangent Faces
Area
The fewer elements used to create the loft sections the easier is will be to control the shape
Stay away from over constrained situations (if start and end tangency exist, it is better to not use a rail even if it has those conditions)

26. Loft Features Conditions Condition Boundaries Sketches
Free Condition
Direction Condition
Condition Boundaries Face Loop
Smooth (G2) Condition
Angle
Weight
The fewer elements used to create the loft sections the easier is will be to control the shape
Stay away from over constrained situations (if start and end tangency exist, it is better to not use a rail even if it has those conditions)

27. Loft Features
Loft Features
Transition
Point Set
Map Point
Position

28. Exercise 7-5
Creating Loft Features

29. Multi-Body Parts Create a solid body in a part file
Derive a solid body into a part file
Split Part into solid bodies

30. Multi-Body Parts
Edit solid bodies
Move bodies
Combine

31. Multi-Body Parts
Export solid body
Make Part
Make Components

32. Split a Solid, Part or Face
Part Split and Face Split
Method
Split Face
Trim Solid
Remove Material
Split Solid
Split dialog box
Split Tool
Faces
All
Select

33. Exercise 7-6
Splitting a Part into Multiple Bodies

34. Bend Part Bend a part A bend line Radius + Angle Radius + Arc Length
Arc Length = Angle

35. Mirroring Features Mirroring Features Features Mirror Entire Solid
Dependent on the parent feature
Mirror Plane
Creation Method
Change or update
Mirror Entire Solid

36. Suppressing Features Suppressing Features Temporarily turn off display
Simplify parts
Increases system performance
Unsuppress
Parent – child relationships

37. Conditionally Suppress Features
Feature Properties
Parameter Value – If statement

38. Reordering Features
Reordering Features
Browser
Drag horizontal line

39. Feature Rollback Feature Rollback
Roll back the design to an earlier state
Then place new features
Reorder
Delete all features below EOP

40. Derived Parts In a Part (IPT) file Options Operations Scale Factor
Body
Work Surface
Sketches
3D Sketches
Work geometry
Surfaces
Exported Parameters
iMates
Operations
Mixed
Plus
Exclude
Scale Factor
Mirror Part

41. Derived Assemblies In a Part (IPT) file Operations
Combination
Plus
Exclude
Minus
Bounding Box
Keeps seems between planar faces
Reduced Memory Mode
Update
Break Link

42. Exercise 7-7
Creating a Derived Part

43. Shrinkwrap Reduce detail
Protect intellectual property
Reduce file size
Create a substitute part for use with alternative representations
Create simplified data for complex purchased assemblies

44. Shrinkwrap Remove detail by setting Visibility By Size Holes patching
Object type

45. Exercise 7-8
Shrinkwrap

46. Plastic and Cast Part Features
Silhouette Curves—Parting Line
Create a curve at the outermost boundary of the selected faces
Select a direction
Then create a surface that will be used as a split tool

47. Plastic and Cast Part Features
Grills
Create a grill feature from a simple sketch
Create a sketch
Create feature - fill in information in dialog box

48. Plastic and Cast Part Features
Bosses
Creates a boss feature to hold a fastener
Place sketch point(s) or work point(s)
Create feature - fill in information in dialog box

49. Plastic and Cast Part Features
Rests
Create flat area the goes partially inside and outside a part
Create a sketch
Create feature - fill in information in dialog box

50. Plastic and Cast Part Features
Snap Fit
Creates a mechanism that is used to hold two parts together
Place sketch point(s) or work point(s)
Create feature - fill in information in dialog box

51. Plastic and Cast Part Features
Rule Fillet
Creates a fillet based on a set of rules that dictate when edges touch certain faces or features, fillets will automatically be created
Rules
All Edges, Against Part, Against Features or Free Edges

52. Plastic and Cast Part Features
Lip
Creates lips and grooves that join two parts together at their parting lines
Lips add material and grooves remove material
Create feature - fill in information in dialog box

53. Exercise 7-9
Plastic Part

54. Part Materials Part Materials Physical tab or Properties dialog box
Mass is calculated from material
Part color set to As Material
Color = As Material

55. Override Mass & Volume Properties
Mass and volume values
Default & Overridden
Copy information to clipboard

56. Applying Your Skills
Skill Exercise 7-1

57. Checking Your Skills
True__ False__ When creating a rib or a web feature, you can only select a closed profile.
True__ False__ You can only emboss text on a planar face.
True__ False__ A sweep feature requires three unconsumed sketches.
True__ False__ In a 3D Sketch the Project Geometry command is used to project curves onto a circular face.
True__ False__ You can create a 3D curve with a combination of both 2D and 3D curves.
Explain how to create a 3D path using geometry that intersects with a part.
True__ False__ The easiest way to create a helical feature is to manually create a 3D path and then sweep a profile along this path.
True__ False__ You can control the twisting of profiles in a loft by defining point sets.
Explain how to split a part into two solid bodies and then save them to their own part file.
Explain the difference between suppressing and deleting a feature.
True__ False__ After mirroring a feature, the mirrored feature is always independent from the parent feature. If the parent feature changes, the mirrored feature will NOT reflect this change.
True__ False__ A derived part cannot be scaled.
True__ False__ The Shrinkwrap command can only patch voids created from a hole feature.
True__ False__ When creating a lip feature with the Lip command, you must first create a 3D path.
Explain why you would want to override a part’s mass and volume properties.