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圆柱齿轮在双面啮合的剃齿工作中,所谓的“平衡接触”就是指:当左侧齿形上仅有一对轮齿接触时,右侧齿形上也只有一对轮齿接触;当左侧齿形上有两对轮齿接触时,右侧齿形上也有两对轮齿接触。总之,在整个轮齿的啮合过程中,始终保持其左右两侧齿形上轮齿接触点的数量相等,从而呈现出“平衡”状态,特称此谓“平衡接触”。平衡接触只有在某些特定啮合角的条件下才能实现,图1所示的直齿被剃齿轮其啮合角α′就是按平衡接触的要求设置的,现求该啮合角。
Spur gear In double-sided meshing of shaving work, the so-called “balanced contact” means that when there is only one pair of teeth on the left gear, there is only one pair of teeth on the right gear. When the left When there are two pairs of gear teeth on the side teeth, there are two pairs of gear teeth on the right gear. In short, the entire tooth meshing process, always keep its left and right sides of the tooth-shaped upper teeth contact the same number of points, showing a “balanced” state, the so-called “balanced contact.” The balance contact can be achieved only under certain conditions of engagement angle. The engagement angle α ’of the spur gear shaving gear shown in FIG. 1 is set according to the requirement of balanced contact, and the engagement angle is obtained now.