Among the sheet metal forming processes, hydrodynamics deep drawing and hydromechanical deep drawing process are two main types of the deep drawing process that can fabricate complicated parts. In the hydroforming process, the blank is formed to the desired shape by applying a considerably high hydraulic pressure. In this article, the selection of the process parameters will be investigated during the manufacturing of a pure copper sharp conical part by finite element analysis and experimental tests. Two finite element models are developed for hydrodynamics deep drawing and hydromechanical deep drawing processes. After verification of the FE model by experimental results, the effect of process parameters includes the applied pressure, friction coefficient, die radius and blank holder force on thinning of the blank are investigated. The thinning ratio of blank is calculated in different zones of the conical part under different working conditions determined according to the Taguchi design of experiment methods. Signal to noise ratio analysis has been carried out and the influence of process parameters on the thinning ratio is determined at different zones of the conical part. The results show that the friction coefficient has an important role in the thinning of the conical nose while at the lateral surface of the cone, the die radius is the most effective parameter on the thinning ratio. The results show that by implementing statistical tools (Taguchi method and signal to noise ratio analysis), it is possible to select the proper process parameters conditions and fabricate defect-free parts. In addition, a non-linear regression equation is developed for prediction of thinning ratio in the hydrodynamics deep drawing and hydromechanical deep drawing processes.

在钣金成形过程中，流体力学深冲和流体力学深冲是可制造复杂零件的两种主要类型。在液压成型过程中，通过施加相当高的液压将毛坯成型为所需形状。在本文中，将通过有限元分析和实验测试在纯铜锋利圆锥形零件的制造过程中研究工艺参数的选择。针对流体力学深冲和流体力学深冲过程开发了两个有限元模型。通过实验结果验证了有限元模型，研究了工艺参数对施加的压力，摩擦系数，模具半径和毛坯固持力对毛坯减薄的影响。根据田口设计的实验方法，在不同的工作条件下，计算圆锥零件不同区域的毛坯稀化率。已经进行了信噪比分析，并确定了圆锥形零件不同区域的工艺参数对稀化比的影响。结果表明，摩擦系数在锥形鼻的减薄中起着重要作用，而在圆锥体的侧面，模具半径是减薄率上最有效的参数。结果表明，通过实施统计工具（田口方法和信噪比分析），可以选择适当的工艺参数条件并制造无缺陷的零件。此外，