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由齿轮传动原理可知,当大齿轮的顶圆与小齿轮的基圆在沿啮合线方向的啮合区域之外相交时(如图中A＇点所示),渐开线齿轮副就会产生干涉。 A点和B点称为干涉点,它们是齿轮副正常啮合运动的极限点。这两个干涉点由啮合线与大齿轮和小齿轮基圆的切点来确定。如要避免轮齿干涉,齿轮副啮合时的初始接触点必须在A点和B点之间的啮合区域内;例如图中的
According to the principle of gear transmission, when the top circle of the large gear and the base circle of the pinion intersect outside the meshing area along the direction of the engagement line (as indicated by point A ’in the figure), the involute gear pair will interfere . Points A and B are called interference points, and they are the limit points for normal meshing movement of gear pairs. These two interference points are determined by the point of tangency of the meshing line to the bull gear and pinion base circle. To avoid gear tooth interference, the initial point of engagement of the gear pair must be within the meshing area between point A and point B; for example,