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为提高外啮合渐开线圆柱齿轮的齿根弯曲强度 ,针对齿条型刀具提出了减小刀具齿顶高并同时加大其齿顶过渡圆弧半径的改进方案。确定了在保证齿轮工作时不发生过渡曲线干涉且不改变齿轮有效齿面的前提下刀具的最小齿顶高系数 ,并建议在齿轮刀具标准中增加刀具齿顶高系数系列。
In order to improve the root bending strength of the externally meshed involute cylindrical gear, aiming at the rack type cutter, an improved scheme of reducing the tip height of the cutter and increasing the radius of the transition arc of the tooth top is proposed. The minimum addendum height coefficient of the tool under the premise of no transition curve interference and no change of the effective tooth surface of the gear is ensured when the gear work is ensured. It is suggested that the gear tooth top high coefficient series should be added to the gear tool standard.