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研究车削加工直径尺寸形成机理，简化工艺系统尺寸链，得出三瞬心法预测工件加工精度的理论模型；在对工艺系统误差检测与辩识的基础上，实现对虚拟车削加工 （一次进刀级）工件的精度预报，其结果与实际加工测量误差可控制在 １０％以内．
Researching the formation mechanism of the diameter of turning machining, simplifying the dimension chain of the process system, and obtaining the theoretical model of the three-point instantaneity prediction of workpiece machining precision. On the basis of detecting and recognizing the process system error, Level) accuracy of the workpiece prediction, the results of the actual processing and measurement error can be controlled within 10%.