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pressure angle
    For tooth number difference △ z =1,the minimum operating pressure angle α  min is only 34.87 deg;
    当齿数差Δz =1时 ,最小啮合角α’min=34 .87° ;
    The purpose of the present paper lies in how to find out the solution of the addendum modification coefficients x_1 and x_2 when an operating pressure angle α′ has been given and the calculating value of the trochoidal interference G_s can be successively approximated to any prescribed value.
    本文内容是当啮合角α′已指定,要向齿廓重迭干涉的验算值G_s为任意予期值逼近时,如何求变位系数x_1及x_2。 用切线法迭代次数少,可类推用于求任意限制曲线上的点在α′为某数值时的位置,可用此方法绘封闭图。
    After a careful study of the dependence of the minimal value of the working pressure angle on Z_d and h_a~*, the authors recommend h_a~*=0.6. With the method proposed by the authors, a limiting chart can be easily made, furthermore, the fundamental parameters of gears can be investigated and the design of an involute internal gear pair can be accordingly put into practice.
    根据计算结果分析了Z_d及h_a~*对啮合角最小值的影响,并提出推荐采用h_a~*=0.6。 用本文的方法,可以绘制封闭图及研究齿轮的基本参数,也可设计渐开线内齿轮副。
    In this article, through studying the gear engagement course and with reference of other information, the authors analyse the relation between the operating pressure angle, the backlash, the center distance and the modulus. And a now engagement equation considering the backlash is presented which makes the calculation about the gears simple and clear.
    在这篇文章中,作者通过对齿轮啮合的探讨,在有关文章的启发下,分析了有侧隙时的啮合角,侧隙中心距和模数之间的关系,提出了有侧隙啮合方程式,从而可使齿轮传动计算得以简化。
    To maintain the same number of contact points between the cutter and the workpiece, this paper suggests the balance contact shaving method by using smaller pressure angle shaving cutter, that is using the combination of the balance contact shaving cutter and modifying the tooth profile of shaving cutter.
    为了保持两侧齿面接触点的数量相同,本文建议采用小啮合角剃齿刀的平衡接触剃齿法,即采用小啮合角剃齿刀和修正剃齿刀齿形曲线相结合的办法。
    On the basis of the phenomenon of multi tooth contact in planetary gearing with small tooth number difference,it sets up a new conditon of continuous transmission,which breaks through the constraint of theoretical contact ratio,for optimum programming,and achieves the least operating pressure angle compared with other reports.
    依据渐开线少齿差传动中存在的多齿对同时啮合现象,在优化设计中建立了新的连续传动条件,突破了理论重合度必须大于1的限制条件,获得了迄今为止最小的传动啮合角
    The calculation error of normal working pressure angle caused by the equivalent gear method and the feasibility of applying this design method to the production are analyzed by means of an example of designing the helical shaping cutter for dri-ving gear in milemeter.
    分析了采用当量齿轮法设计加工里程表主动齿轮用斜齿插齿刀时所产生的法向啮合角计算误差 ,以及将该方法应用于实际生产的可行性
    This paper puts forward a new method of optimizing geometric parameters for involute external modified gears :the formula of the four parameters—optimizing pressure angle,helix angle,modification coefficients and addendum coefficient. It also introduces various technical measures for avoiding interference and enhancing strength.
    本文提出了渐开线外啮合变位齿轮几何参数优化设计的新方法-优选啮合角、螺旋角、变位系数、齿顶高系数四项参数的数学公式和避免各种干涉、增加强度的技术措施。
 

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