齿轮传动是机械传动形式之一,随着工业的飞速发展,对齿轮提出更高的要求,要求承载能力大、寿命长、效率高、重量轻及体积小。除了在结构设计上和材质、工艺上采取措施外,目前大多采用变位齿轮,采用变位形式,提高齿轮的承载能力,即提高接触强度、抗弯强度、抗胶合强度以及啮合质量指标等。关于变位圆柱齿轮的几何计算,通常采用无侧隙啮合方程进行计算,计算繁复,往往容易出差错。本文提出借用一些线图进行计算,使计算工作大为简化。在设计计算时,一般可 Gear transmission is one of the forms of mechanical transmission. With the rapid development of industry, higher demands are placed on gears, which require large carrying capacity, long service life, high efficiency, light weight and small size. In addition to structural design and material, process to take measures, the current most of the use of variable gear, the use of displacement form, improve the bearing capacity of the gear, that is, to improve the contact strength, bending strength, anti-bonding strength and meshing quality indicators. On the geometric displacement cylindrical gear, usually without backlash mesh equation calculation, calculation is complicated, often prone to error. This paper proposes to borrow some of the line graphs to make the calculation work greatly simplified. In the design and calculation, generally available