2010
Table Of Contents
- Contents
- Part 1 Overview
- 1 About AutoCAD Mechanical
- AutoCAD Mechanical Software Package
- Leveraging Legacy Data
- Starting AutoCAD Mechanical
- AutoCAD Mechanical Help
- Product Support and Training Resources
- Design Features in AutoCAD Mechanical
- Mechanical Structure
- Associative Design and Detailing
- External References for Mechanical Structure
- Associative 2D Hide
- Autodesk Inventor link
- 2D Design Productivity
- Engineering Calculations
- Machinery Systems Generators
- Intelligent Production Drawing and Detailing
- Detailing Productivity
- Annotations
- Standard Mechanical Content
- Standard Parts Tools
- Collaboration
- 2 Commands in AutoCAD Mechanical
- 1 About AutoCAD Mechanical
- Part 2 Design and Annotation Tools
- 3 Working with Templates
- 4 Using Mechanical Structure
- 5 Designing Levers
- 6 Working with Model Space and Layouts
- 7 Dimensioning
- 8 Working with 2D Hide and 2D Steel Shapes
- 9 Working with Standard Parts
- Key Terms
- Working with Standard Parts
- Inserting Screw Connections
- Copying Screw Connections with Power Copy
- Creating Screw Templates
- Editing Screw Connections with Power Edit
- Working with Power View
- Deleting with Power Erase
- Inserting Holes
- Inserting Pins
- Turning Off Centerlines in Configurations
- Hiding Construction Lines
- Simplifying Representations of Standard Parts
- 10 Working with BOMs and Parts Lists
- 11 Creating Shafts with Standard Parts
- Key Terms
- Creating Shafts
- Configuring Snap Options
- Configuring Shaft Generators
- Creating Cylindrical Shaft Sections and Gears
- Inserting Spline Profiles
- Inserting Chamfers and Fillets
- Inserting Shaft Breaks
- Creating Side Views of Shafts
- Inserting Threads on Shafts
- Editing Shafts and Inserting Sections
- Replacing Shaft Sections
- Inserting Bearings
- Part 3 Engineering Calculations
- Part 4 Autodesk Inventor Link
- Index
The Calculation button gives you the results of your design. To optimize
your design, you can choose to generate the correct size of the cam based
on the pressure angle and the radius of curvature.
To generate a cam design based on pressure angle and radius of curvature
1 Click the Calculation button.
To optimize the size of the cam, the pressure angle from your design must
be less than or equal to a certain value (automatically calculated and
displayed at the bottom of the cam Design and Calculation dialog box)
while the radius of curvature must be greater than or equal to a certain
value (automatically calculated and displayed at the bottom of the cam
Design and Calculation dialog box).
2 Click the Results button.
3 In the Geometry tab, click the Center of Cam button.
Two hatched open triangles are displayed on the screen.
4 Respond to the prompts as follows:
Press ESC or ENTER to exit, or [Change center of cam]:
Enter C, press ENTER
Specify center of cam <100,100>: Press ENTER
5 Snap to the apex of the triangle that produces a maximal pressure angle
less than or equal to the recommended value and a minimal radius of
curvature greater than or equal to the recommended value.
Exporting Cam Data and Viewing Results
To export TXT cam data for an NC machine
1 In the Cam Design and Calculation dialog box, click Export.
On the File tab, specify:
Export Curves: Inner
Precision [mm]: 0.01
Data Type: File: TXT
Data Type: Coordinates: Polar
368 | Chapter 18 Designing and Calculating Cams