目前齿轮副侧隙的计算仍使用材料平均热膨胀系数的方法,造成较大误差.本文根据计算所得齿厚偏差来确定侧隙的最大值及最小值.齿轮副侧隙的大小与齿轮齿厚减薄量有着密切的关系,齿厚上偏差,即齿厚的最小减薄量可以根据齿轮副所需要的最小侧隙通过计算确定,齿厚下偏差则按齿轮精度等级和加工齿轮时的径向进刀公差和几何偏差确定.齿轮精度等级和齿厚极限偏差确定后.齿轮副的最大侧隙就自然形成.%The calculation of gear backlash is still adopting the material average coefficient of thermal expansion means, resulting in large errors.Confirming the maximum and minimum value according to tooth thickness deviation is obtained by calculating.The size of gear backlash is closely related to gear tooth thickness and thinning, tooth thickness upper bias, that is, minimum thinning can be confirmed by minimum required gear backlash, tooth thickness lower deviation is confirmed by and geometry based on accuracy grade and processing gear radial feed tolerance and deviation.And after tooth thickness of gear accuracy and class limit of deviation are determined, the maximum gear backlash is formed naturally.
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