《建筑机械》1987年第1期刊载了李治平同志撰写的“混凝土搅拌输送车拌筒及其螺旋搅拌叶片设计”一文(以下简称“混”文)。该文第二节介绍了斜圆锥对数螺旋面搅拌叶片的计算机设计方法,读了很受启发。但发现斜圆锥对数螺旋面方程有误,这必将导致计算结果的错误,因此予以订正。为讨论方便,仍将“混”文的 The first issue of “Construction Machinery” in 1987 contained the article “Design of Concrete Mixing and Conveying Truck Drums and Screw Mixing Blades” written by Comrade Li Zhiping (hereinafter referred to as “mixed” article). In the second section of this article, the computer design method of the inclined cone logarithm spiral surface mixing blade is introduced. It is very instructive to read it. However, it was found that the logarithmic spiral equation of the oblique cone was incorrect, which would inevitably lead to an error in the calculation result. Therefore, it was corrected. For the convenience of discussion, the “mixed” text will remain