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利用有限元法对机床的结构进行受力变形的分析，并用接触理论对导轨的受力变形进行分析计算，提出了计及载荷误差的机床空间误差通用计算模型。用此计算模型在多种载荷下对ＸＨ７１５加工中心的空间误差进行计算，其结果与实测值基本吻合。
The finite element method is used to analyze the mechanical deformation of the machine tool, and the contact deformation of the guide rail is analyzed and calculated by using the contact theory. A general calculation model of the machine tool space error considering the load error is proposed. With this model, the space error of XH715 machining center was calculated under a variety of loads. The results are in good agreement with the measured values.