Aaron Habeck

Imagine a gear milling method where the toolpath -- not the tool shape -- determines gear characteristics such as diametral pitch or pressure angle. A new concept, involute milling, provides that functionality while delivering machining efficiency and production versatility. The result is a "democratization" of gear milling, moving the process from single-purpose, dedicated machine tools to multipurpose machines that can produce small batches economically because no costly hobs or gashers are needed.

Cutting forces cause the boring bar to deflect, which can lead to vibration and damaged workpieces. The author gives an overview of available boring bars and offers guidelines for selecting one for a specific application.