Calculating hob cutting time
Input data	Values	Unit
Normal module (Mn)		mm
Number of teeth (Z)
Preparation		Hours
Helix direction	Spur gearHelicalHerringbone
Helix width (b)		mm
Machining type	FinishRoughing
Dedendum
Number of hob tool entries
Hob tool outside diameter		mm
Advance for roughing		mm/revolution
Advance to finishing		mm/revolution
RPM of the grinding tool		v/min.
Tool RPM for finishing		v/min.
Number of cuts

Result
Total time		Hours
		Decimal