分析了卧式车床床身导轨在水平和垂直平面上的误差对工件加工误差的影响。
The article analyses the effect of the error of horizontal lathe's guiding rails on the horizontal level and vertical level on the processing error of the work-piece.
采用水平卧式浇注，铸件对称的两边收缩率基本相同；而采用垂直立式浇注，铸件对称的上下收缩率相差较大。
The contractive rates on both sides in symmetric part were basically of the same for horizontal pouring while of extreme difference for vertical pouring.
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