非零变位原理用于空间传动弧齿锥齿轮设计中,是平衡大、小齿轮的强度,减少齿数,改善啮合性能的好方法。但最基本的是要保证正常的啮合,避免出现根切。这就需要确定在某种齿数条件下的最小变位系数。早期的设计人员在设计中按照弧齿锥齿轮的当量斜齿轮齿数须大于渐开线斜齿圆柱齿轮无根切最少齿数来确定其最小变位系数,(见下式)。 The principle of non-zero displacement for spatial transmission spiral bevel gear design, is to balance large and small pinion strength, reduce the number of teeth, a good way to improve the performance of the engagement. But the most basic is to ensure normal meshing, to avoid radical. This requires determining the minimum coefficient of displacement for a given number of teeth. Early designers in the design according to the spiral bevel gear equivalent helical gear tooth number should be greater than involute helical cylindrical gear without root cutting minimum number of teeth to determine the minimum displacement coefficient, (see below).