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以标准的圆柱齿轮和被测非圆齿轮在设计的双啮仪上啮合，用光栅测出实际中心距的变动量和理论中心距变动量进行比较，用微机处理比较得出的数据，绘出误差曲线，直观地反映非圆齿轮的径向综合误差和一齿径向综合误差
With the standard cylindrical gear and the measured non-circular gear meshing in the design of the double nip, using grating to measure the actual center distance variation and theoretical center distance variation compared with the computer to compare the data obtained draw Error curve, intuitively reflect the non-circular gear radial integrated error and a tooth radial integrated error