Spiral bevel and hypoid gear cutting technology has changed significantly over the years. The machines,
tools, materials, coatings and processes have steadily advanced to the current state of the art. This paper will
cover the progression from mechanical machines with complex drive trains using the five cut method of cutting
gears with coolant, to machines with direct drive CNC technology dry cutting gears by the completing method
with carbide and high speed steel tools. The latest cutting tool materials and tool coatings will be discussed.
Production examples from the automotive and truck industries will be provided, as well as examples from the
gear jobbing industry.
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