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以锥形件为力学模型，用板材成形的塑性失稳理论对典型轴对称拉深件的极限承载能力进行了归一化的定性和定量分析，给出了该类工件破裂先稳时的极限载荷的统一表达式，并由此得到了拉深过程中工件侧壁破裂先稳的临界条件，为拉深过程智能化控制提供了预测最佳压边力规律的理论依据。
Taking the conical part as the mechanical model, the ultimate bearing capacity of the typical axially symmetric drawing part was normalized qualitatively and quantitatively by using the plastic instability theory of sheet metal forming. The limit of this type of workpiece when it fractured first was given The uniform expression of the load and the critical condition of the first stability of the side wall of the workpiece during the drawing are obtained, which provides the theoretical basis for the prediction of the optimum blank holder force for the intelligent control of the drawing process.