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不论是为改进加工精度与效率还是为实现虚拟制造，对切削过程建立精确而可靠的模型已经成为许多研究者的研究重点。本文针对棒铣过程，考虑工件、刀具和机床柔性，推导了一个解析的加工表面误差模型。仿真显示了加工条件对表面误差的影响，在较小切深时，切削力将刀具推离工件形成正误差，而在较大切深时，切削力将刀具拉向工件形成负误差。这些特点在实际切削实验中得到验证。
Whether it is to improve the machining accuracy and efficiency or to achieve the virtual manufacturing, the establishment of accurate and reliable cutting process model has become the focus of many researchers. In this paper, an analytical model of machined surface error is derived for the bar milling process, taking into account the workpiece, tool and machine tool flexibility. The simulation shows the influence of machining conditions on the surface error. When the depth of cut is small, the cutting force pushes the tool away from the workpiece to form a positive error, while at deeper cutting depth, the cutting force draws the tool toward the workpiece to form a negative error. These characteristics have been verified in actual cutting experiments.