分析了加工残留误差，砂轮磨损以及砂轮倾角误差对面形精度的影响。
The influences to the surface shape accuracy caused by the mismachining tolerance, the wear and the fixed angle of the cup wheel are analyzed.
它可以精确到偏心率和倾角差的一阶项， 而且不再包括长期误差。
The solution is accurate to first order in the eccentricity and inclination difference and including no long term errors.
然而，当倾角较小时，童付的公式存在严重的计算误差传递。
However, there is a severe problem on calculating error propagation in Tong Fu s formulae in the case of relatively small inclination.
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