摘要
本文用回归分析法求得了ＧＢ１２７５９—９１型双圆弧齿轮的齿腰应力的计算公式。研究表明，大螺旋角或小载荷时，齿腰应力大于齿根应力。因此，齿腰是一个薄弱环节，应受到重视。
A formula is given to calculate the stress in tooth middle of GB12759-91 double circular-arc gear via regression analysis in this paper. The study shows that the stress in tooth middle is larger than that in tooth root with big spiral angle and lightload. Tooth middle is a weak point of double circular-arc gear and more attention should be paid.
关键词
齿腰应力
齿根应力
圆弧齿轮
螺旋角
the stress in tooth middle fillet
the stress in tooth root
circulararc gear
spiral angle
