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Table Of Contents
- Getting Started with Autodesk® Mechanical Desktop®
- Autodesk® Mechanical Desktop® Tutorials
- Using the Tutorials
- Creating Parametric Sketches
- Constraining Sketches
- Creating Sketched Features
- Key Terms
- Basic Concepts of Sketched Features
- Creating Extruded Features
- Editing Extruded Features
- Creating Loft Features
- Editing Loft Features
- Creating Revolved Features
- Editing Revolved Features
- Creating Face Splits
- Editing Face Splits
- Creating Sweep Features
- Editing Sweep Features
- Creating Bend Features
- Editing Bend Features
- Creating Work Features
- Creating Placed Features
- Key Terms
- Basic Concepts of Placed Features
- Creating Hole Features
- Creating Thread Features
- Editing Hole Features
- Editing Thread Features
- Creating Face Drafts
- Editing Face Drafts
- Creating Fillet Features
- Editing Fillet Features
- Creating Chamfer Features
- Editing Chamfer Features
- Creating Shell Features
- Editing Shell Features
- Creating Surface Cut Features
- Editing Surface Cut Features
- Creating Pattern Features
- Editing Pattern Features
- Editing Array Features
- Creating Copied Features
- Editing Copied Features
- Creating Combined Features
- Editing Combined Features
- Creating Part Splits
- Editing Part Splits
- Using Design Variables
- Creating Parts
- Creating Drawing Views
- Creating Shells
- Creating Table Driven Parts
- Assembling Parts
- Combining Parts
- Assembling Complex Models
- Key Terms
- Basic Concepts of Complex Assemblies
- Starting the Assembly Process
- Creating Local and External Parts
- Applying Assembly Constraints
- Creating New Parts
- Creating Subassemblies
- Completing Assemblies
- Editing Mechanical Desktop Parts
- Reloading External References
- Reviewing Assembly Models
- Creating Bills of Material
- Finishing Drawings for Plotting
- Creating and Editing Surfaces
- Combining Parts and Surfaces
- Surfacing Wireframe Models
- Key Terms
- Basic Concepts of Surfacing Wireframe Models
- Surfacing Wireframe Models
- Creating Trimmed Planar Surfaces
- Joining Surfaces on Complex Shapes
- Creating Swept and Projected Surfaces
- Creating Complex Swept Surfaces
- Using Projection to Create Surfaces
- Using Advanced Surfacing Techniques
- Viewing Completed Surfaced Models
- Working with Standard Parts
- Creating Shafts
- Calculating Stress on 3D Parts
- Toolbar Icons
- Desktop Tools
- Part Modeling
- Part Modeling ‰ New Part
- Part Modeling ‰ New Sketch Plane
- Part Modeling ‰ 2D Sketching
- Part Modeling ‰ 2D Constraints
- Part Modeling ‰ Profile a Sketch
- Part Modeling ‰ Sketched Features
- Part Modeling ‰ Placed Features
- Part Modeling ‰ Work Features
- Part Modeling ‰ Power Dimensioning
- Part Modeling ‰ Edit Feature
- Part Modeling ‰ Update Part
- Part Modeling ‰ Part Visibility
- Part Modeling ‰ Options
- Toolbody Modeling
- Assembly Modeling
- Surface Modeling
- Surface Modeling ‰ AutoSurf Options
- Surface Modeling ‰ Swept Surface
- Surface Modeling ‰ Loft U Surface
- Surface Modeling ‰ Blended Surface
- Surface Modeling ‰ Flow Wires
- Surface Modeling ‰ Object Visibility
- Surface Modeling ‰ Surface Display
- Surface Modeling ‰ Stitches Surfaces
- Surface Modeling ‰ Grip Point Placement
- Surface Modeling ‰ Lengthen Surface
- Surface Modeling ‰ Extract Surface Loop
- Surface Modeling ‰ Edit Augmented Line
- Surface Modeling ‰ Wire Direction
- Scene
- Drawing Layout
- Mechanical View
- Index
Basic Concepts of Creating Parts | 255
Basic Concepts of Creating Parts
You construct a model bit by bit, fashioning shapes to add to it and using
tools to cut away the portions of the shapes you do not need. In Mechanical
Desktop
®
, these shapes are the features of the part you are creating.
Analyzing Rough Sketches
You may be accustomed to jotting down design ideas on paper, starting with
a rough outline for a part and adding details as you go. Working with
Mechanical Desktop is similar: you put some thought into your idea, plan-
ning the best way to implement your concept.
In general, you follow this process to develop a part design:
■ Look at the whole part and decide how to break it down into simple shapes.
■ Identify the simplest element to use as your base feature.
■ Decide the order for creating additional features.
■ Determine the methods for creating the features.
■ As you build individual features, review and adjust your ideas about how
the features work together.
■ As you adjust your design strategy, you can revise the features you created
earlier.
With early planning, you can express your design in modular, simple terms.
When changes occur, as they often do in design work, you can easily accom-
modate them because of the parametric capabilities in Mechanical Desktop.
Any changes you make to your design are quickly recalculated.
As you study the part to determine the features you need and the order in
which to create them, also notice the relationships and patterns of the
shapes. Some features may be symmetrical, but others may be built most eas-
ily from simple shapes combined to form compound shapes.
The saddle bracket in this rough sketch has four distinct features: the saddle,
the mounting lugs, a boss, and strengthening ribs.
lug
boss
saddle
rib