歯車の歯の側端や歯先稜の接触による損傷 : 第3報,歯側端近傍の接触応力状態とその緩和法(機械要素,潤滑,工作,生産管理など)

概要

論文の詳細を見る
For gears with small amount of profile and lead crowning modification, failures due to contact of tip edge and tooth side edge become of problem. In previous reports, chipping of tooth side edge, pitting of surface contacting with side edge of mating tooth and the tooth breakage caused by those failures were investigated. It was clarified that high contact pressure, high stress and the slipping due to Hertzian elastic deformation near tooth side edge, are considered to be major reasons of those failures. In this report, the influence of shape of chamfer of tooth side edge on contact stress condition near contacting tooth side edge is investigated by FEM. Contact pressure near side edge becomes higher if the amount of chamfer is increased. Higher stress at tooth side edge is induced by increasing the amoust of cut chamfer, but it is not true for corner rounding. Those features correspond reasonably to the result of endurance test reported in previous reports. Partial corner rounding composed by radius and mount of chamfer could has an effect to improve the contact stress condition near side edge of tooth. Smaller difference in tooth width of mating gears makes contact pressure and stress condition near side edge lower.
一般社団法人日本機械学会の論文
2004-12-25