根据筒形件第一次拉深时材料的变形特点，提出了“环料基本面积消化率”的概念，建立了筒形件第一次拉深极限的判定方程，其相应的计算结果和实验、实际应用结果相一致。该方法比传统的查表法更方便、准确，也有利于模具ＣＡＤ软件的开发工作 According to the deformation characteristics of the material during the first drawing, the concept of digestibility of the basic area of ​​the ring was put forward. The judgment equation of the first drawing limit of the cylindrical part was established. The corresponding calculation results and experiments , The actual application of the same result. This method is more convenient and accurate than the traditional look-up table method, which is also beneficial to the development of mold CAD software