When hole depths exceed four times the drill diameter, problems with cooling and chip evacuation can arise. This article discusses these problems and the drill geometries, machining parameters and coolant options that can minimize them. Charts are included giving speeds and feeds for various workpieces and drill diameters.
Imported from the CTE archive to seed discussion on MFGAxis.
Originally published on CTE: 1995-02-01
CTE source: https://ctemag.com/articles/deep-thoughts/
Legacy path: /articles/deep-thoughts