6.0
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
Using Construction Geometry | 115
Controlling Tangency
A single piece of construction geometry can manage the size and shape of
entire sketches. Circles and arcs are particularly useful for constraining the
perimeter shapes of nuts, knobs, multisided profiles, and common polygons.
In this exercise, you create a triangular sketch and then constrain the sides of
the triangle and the internal angles to remain equal. In this manner, you
could form the basis for a family of parts in which the only variable is a single
diameter dimension.
Create a new part definition for the next sketch.
To create a new part definition
1 Use
AMNEW to create a new part definition.
Context Menu In the graphics area, right-click and choose Part ➤ New
Part.
2 Accept the default part name.
3 Pan the drawing so you have room to create the next sketch.
Context Menu In the graphics area, right-click and choose Pan.
You are ready to create the next sketch.
To control tangency with construction geometry
1 Use
PLINE to create the triangular shape.
Context Menu In the graphics area, right-click and choose 2D Sketching
➤ Polyline.
2 Draw a circle inside the triangle.
Context Menu In the graphics area, right-click and choose 2D Sketching
➤ Construction Circle.