How Can I Correct Chatter?
Look at your application as a whole when you investigate a chatter issue. Generally, there are three aspects of the application that you can control to stop chatter:
- The Program: Feeds, Speeds, depth- and width-of-cut and Toolpaths
- Tooling: Tool Geometry, Material, Size, Number of Flutes
- Workholding: Connection to the Table, Connection to the Part
Ideally, you would have optimal solutions for all of these aspects, but in the real world, you may have to make compromises—for example, maybe you have a deep pocket to machine and so a tool is longer than ideal, or your workholding cannot grip a thin-walled part as firmly as the application demands. In these cases, to prevent chatter, you need to change the parts of the application that you do have control over: For example: to compromise for the long tool, maybe you would back off your depth-and width-of cut; for the light-grip workholding, you might choose tooling with geometry that reduces cutting forces.
Why is it Important to Correct Chatter?
Aside from the noise and bad surface finish, chatter causes accuracy issues. It can also shorten the service life of your tooling, your workholding, and the machine tool itself.