کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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804987 | 905034 | 2010 | 17 صفحه PDF | دانلود رایگان |
Gear flank modification is an important technique for reducing gear running noise and avoiding edge contact for spiral bevel and hypoid gears. This work proposes a novel ease-off flank modification methodology for spiral bevel and hypoid gears made by a modern Cartesian-type hypoid gear generator. The first step is to obtain the desired ease-off topography by calculating and then synthesizing the ease-off along the contact path from the predesigned transmission error and along the contact line from the predesigned bearing ratio. The second step establishes the ease-off sensitivity matrix that corresponds to the pinion head cutter and the six-axis motion parameters of a hypoid generator based on a mathematical model of a modern Cartesian hypoid generator. Finally, linear regression identifies the corrective machine settings for modifying the pinion tooth flanks so that they approximate the desired ease-off topography. We demonstrate the validity of this flank modification method using a numerical example of the Gleason Triac face-hobbed hypoid gear made by a Cartesian-type CNC machine. This proposed flank modification methodology can serve as a basis for developing a general technique of flank modification for other gear types.
Journal: Mechanism and Machine Theory - Volume 45, Issue 8, August 2010, Pages 1108–1124