And it counted the different phase equivalent gap in gear meshing, and draw corresponding graph, then got the equivalent gap change character in arc tooth cylindrical gears meshing.

• 计算了齿轮工作啮合中不同相位的当量间隙，绘制了相应的曲线图，得出了弧齿圆柱齿轮啮合中当量间隙的变化特性。