在实际工程中,采用的叶片安放角往往不是原水力模型设计工况时的安放角。但模型泵的叶片剪裁图是按设计工况时的安放角绘制的,为了确定安放角变化后实物泵的某些尺寸,就需要重新绘制叶片剪裁图。为此,本文作者提出了经坐标换算后,重新绘制剪裁图的方法。 In practical engineering, the blade placement angle is often not the original hydraulic model design conditions when the placement angle. However, the blade model of the model pump is drawn according to the installation angle of the design conditions. In order to determine some dimensions of the actual pump after the installation angle changes, it is necessary to redraw the blade cut diagram. To this end, the author of this paper proposed after the coordinate conversion, re-draw the cut.