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Helical Gear Systems

The article "Helical Gear Systems" appeared in the August 2016 issue of Gear Technology.

In terms of the tooth thickness, should we use the formulation with respect to normal or transverse coordinate system? When normalizing this thickness in order to normalize the backlash (backlash parameter), we should divide by the circular pitch. Thus, when normalizing, should this circular pitch be defined in the normal or traverse coordinate system, depending on which formulation has been used? Is the backlash parameter always defined with respect to the tangential plane or normal plane for helical gears?

helical gears, tooth thickness, backlash, geometry, design

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