为更加真实有效地分析正交面齿轮弯曲强度,本文推导了正交面齿轮齿面方程及齿根过渡曲面方程,构建了正交面齿轮的全部齿廓,并利用Pro/E软件分别生成了两种全齿廓正交面齿轮三维实体模型.基于内切抛物线理论分析论证了正交面齿轮的最大弯曲应力位置是在沿齿高方向齿面的上半部分而非齿根处.利用ANSYS软件分别对齿顶圆角和齿顶尖角插齿刀所切制的两种面齿轮三齿模型进行了弯曲强度分析.研究结果表明,齿顶圆角插齿刀所切制的齿根过渡曲面提高了正交面齿轮的弯曲强度.%To analyze the bending strength of orthogonal face gear effectively,the tooth surface equation and deden-dum transition curve surface equation on orthogonal face gear were deduced. The whole tooth profile of the orthogo-nal face gear was established,and two kinds of 3D entity models of orthogonal face gear with the whole tooth profile were generated by using Pro/Engineer software. Based on the theory of internally tangent parabola,the position of the maximum bending stress of the orthogonal face gear was in the upper half portion of the tooth surface along the tooth height than at the dedendum. Analyses of the bending strength of the three-tooth models of two kinds of face gear cut by slotting cutter from rounded corner and sharp corner at the addendum were carried out using ANSYS software. The tooth root transition curve surface cut by slotting cutter from rounded corner at the addendum im-proved the bending strength of the orthogonal face gear.
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