A method to obtain the higher productivity of hourglass worm gearing with high performance is developed. For this purpose, a method for manufacturing the worm by a pinion cutter is developed, along with a method for analyzing how the cutting blades generate the worm tooth surface.

A method to calculate the true profiles of the worm tooth surface generated by the pinion cutter blades is discused. These calculating method are available for any kind of the gearing manufactured by any type of cutting tool.

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