回转窑等转筒设备传动开式齿轮的研究(Ⅱ)——渐开线齿轮副齿形参数设计新理念

从回转窑等转筒设备传动齿轮现行设计理念利弊分析入手,提出了多齿数、小模数、小变位(x_1≤0.5、x_2≈1或x_1≈0.5、x_2≤1)、小螺旋角和小滑动率差(Δη≤0.0001)的"一多四小"设计理念。介绍了齿轮总变位系数x_Σ的取值分配方法和螺旋角的选择注意点。通过分析对比得出结论:当变位系数为x_1≤0.5、x_2≈1或x_1≈0.5、x_2≤1时既不增加制造难度,又能增加齿厚;齿轮总变位系数合理取值和分配,大齿轮变位系数x_2≈1和理论滑动率Δη≤0.0001时,有利于减少滑动磨损和延长大小齿轮寿命;采用小螺旋角,能使重合度ε_γ提高到2.1以上,有利于提高承载能力和运转平稳性,有利于减小模数、增加齿数和降低制造成本。

From the analysis of advantages and disadvantages of current driving gear design ideas for drum equipment, the new design ideas for multi-teeth small modulus, small displacement （x1≤0.5、x2≈1或x1≈0.5、x2≤1）, small helix angle and small slip ratio difference（Δη≤0.0001） were presented. It was described the overall variation coefficient xΣ values and distribution methods for gear and selective attention point for helix angle. It was concluded that the manufacture difficulty of gear could be reduced and the face width of gear could be increased when x1≤0.5、x2≈1 or x1≈0.5、x2≤1,and it was helpful to reduce the slide wear and extend gear life when xΣ value of gear was allocated reasonably and the large gear variation coefficient x2≈1 and theoretical slip ratio Δη≤0.0001; Using a small helix angle, it was coincidence degree εγ increased to 2.1 or more, and help to improve the bearing capacity and smooth operation, helpful to reduce the modulus and increase the number of teeth and reduce manufacturing costs.