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分析了Ｙ型轧机弧三角孔型整体磨削误差计算原理，明确了整体磨削误差计算的思路，指出了整体磨削误差计算的方法和步骤。
The calculation principle of the overall grinding error of the triangular groove of Y - shaped rolling mill is analyzed. The idea of calculating the overall grinding error is clarified and the methods and steps of the overall grinding error calculation are pointed out.