The CNC Keyway broach cut time calculator performs the following:
- Roughly calculates cycle time when keyway broaching in a CNC machine
- App calculates cut time based on keyway depth, length, & depth of cut
- This feature was added by the request of www.cncbroachtools.com
- These calculations may vary depending on the speed of your machine
Calculate your Clearance Undercut Diameter Below
When broaching a keyway in a CNC machine, you must always program the broach to cut completely through the material and into an open feature such as a cross hole or an internal groove. The most common programming technique is to cut an internal groove (or undercut) behind the keyway. When doing this you must remember that the corners of the broaching insert are farther from center than the flat at the top of the insert. For instance, a tool that is cutting a .375" wide keyway will need an undercut that is .038" larger in diameter than a .250" wide keyway. The calculator below quickly finds the diameter and allows for an additional .025" for chip clearance.
CNC Machinist Calculator Pro is a machining calculator designed to make your life easier. Our app is perfect for CNC programmers or operators who need to make quick calculations on the fly. It includes the following features: