Using the Autodesk Inventor Variable-Radius Fillet
Posted July 25, 2013 by Robert Reid, Synergis Manufacturing Solutions Engineer:
A Variable-Radius Fillet contains a radius that varies along the length of a specified edge. To create the fillet, a location along the specified edge is initially created as the start point, and then afterwards, a second point is specified as the endpoint. You can also add intermediate points, each of which can have a different radius. The transition type will determine the shape of Variable-Radius Fillet.
Let’s look at the following example. A plate is modeled 6” wide, 4” high, 3/4” thick.
On the Modify Panel, click Fillet.
Click on Variable:
Let’s walk through an example.
1. First, select the edge:
2. The Start Point is highlighted along the specified edge with a white arrowhead:
3. The End Point is the highlighted with a white arrowhead:
4. The Radius is also shown for both the start and end positions.
5. The position values that are shown represent a percentage of the line. 0.0 represents 0 (zero), 1.0 represents 100% of the line.
6. Here, I select 2 points along this edge:
7. Point 1 represents 23.40% of the line or 0.234 x 6″ = 1.404″
8. Point 2 represents 73.28% of the line or 0.7328 x 6″ = 4.3968″
9. To adjust the values, click on the Position value and change:
10. The Radius values can also be changed in the same matter, at the same time the Position value is being changed:
Clicking OK in the dialog box, we accept the changes that have been made:
A Variable-Radius Fillet has been created!
Have questions? Let us know! Call (800.836.5440) or email us for help!
See some of Bob’s previous posts:
- Pin Connections
- Limits/Fits Mechanical Calculator
- Press Fit Calculator
- Tolerance Calculator
- Key Connections
- “O” – Ring Generator
Robert Reid graduated from Middlesex College in New Jersey with a Degree in Mechanical Engineering Technology. With over 25 years of Industrial Machine Design, including Wire Drawing Machinery, Plastic Processing Machinery, & Packaging Machinery, Robert has held various positions within the workforce, including, Manager of Engineering; Sheet Extrusion Dept, Manager of Engineering, Chief Design Engineer. He is currently an Autodesk Inventor Certified Expert.