英语翻译4.2 Procedure of design high contact ratio of face gear

英语翻译
4.2 Procedure of design high contact ratio of face gear drive
In order to design a face gear drive with high contact ratio and good dynamic performance,parabolic rack-cutters are applied to generate both profile crowning for helical pinion and face gear surfaces that determine the path of contact in longitudinal direction.Longitudinal crowning for the helical pinion is considered simultaneously to reduce the sensitivity of the face gear drive to misalignments[4].The parabolic profile of rack-cutters are mentioned in Fig.2(b).
The path of contact and transmission errors for design of face gear drive with high contact ratio have to be satisfied with the follows
(1) Under the condition of a given tooth width of face gear,the high contact ratio of gear drive can be accomplished by design of parabolic parameters and of rack-cutters.
(2) The path of contact should be orientated longitudinally in order to avoid the occurrence of edge contact.
(3) The function of transmission errors have to be a symmetrical shape that can be implemented by design of position parameter of parabola apex
(4) Furthermore,the amplitude of loaded transmission errors ought to be minor which determined by the difference tooth number of ( ) and the parabola coefficient of tool plunging for the helical pinion.
The design of high contact ratio of face gear drive is represented by following procedure,

4.2程序设计高接触比面对齿轮传动
为了设计出面对齿轮传动高接触率和良好的动态性能,抛机架切割机适用于产生两个剖面加冕螺旋齿轮和面齿轮表面确定的道路,在纵向联系.纵向加冕的螺旋齿轮是同时考虑,以减少敏感性面对齿轮传动来失调[ 4 ] .抛物线轮廓机架刀具中提到图2 （ b ） .
道路的联系和传输错误的设计面临齿轮传动接触率高,必须满足如下
（ 1 ）条件下,考虑齿面齿轮的宽度,高度接触比齿轮传动可以通过设计的抛物线参数和机架刀具.
（ 2 ）道路的联系应注重纵向,以避免发生边缘联系.
（ 3 ）功能的传输错误必须是对称的形状,可实施的设计位置参数抛物线顶点
（ 4 ）此外,加载的振幅传输错误应该是轻微的,确定的差异齿数的（ ）和抛物线系数的工具,使为螺旋齿轮.
该设计的联系比面对齿轮传动是由下列程序,
兄弟分数好少啊,不过还是帮你一把,我也是机械的,哈哈