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Dry cutting gear hobbing in modul range m≥4 mm with HSS tools

Lierath F., Knoche H.J., Herzhoff P., Streubel A.

Zeszyty Naukowe Politechniki Rzeszowskiej. Mechanika

2002

z. 58 [193]

227-231

In line with the project the high work potential of dry cutting and minimum quantity lubrication (MQL) with coated HSS-gear hobs will be shown in order to realize an economical and reliable method for gear hobbing of toothed systems with bigger modules, which works completely without or nearly without cooling fluids respectively. For the investigations was used common material for gears in a module range from 4 mm to 7 mm and progressive cutting values similar to industrial applications. It was demonstrated that industrial produced gear hobs from powder metallurgical HSS with TiAlN coatings by using methods of dry cutting and MQL can resist the occurring process charges due to the bigger modules and gear width. In comparison to the state of technical knowledge which is wet cutting was ascertained an enormous increase of tool life by using this method of dry cutting and MQL.