The composition of rectangular box deep drawing system of divided variable blank holder force (VBHF) was discussed, its principle and work process of each portion were analyzed.
介绍了分区变压边力矩形件成形系统的组成以及各部分的原理结构，分析了各部分的工作过程。
The numerical simulation result indicates that the variable blank-holder force can improve the formability of box deep drawing.
模拟结果表明，变压边力控制技术可以显著地改善矩形件的成形性能，增加矩形件的拉深极限。
On the basis of the fracture model and the deep drawing deformation force. The fracture limit prediction and control criterion is calculated.
根据破裂模型和拉深变形力，导出了破裂极限预报与控制判据。
The latest achievements achieved in the intelligent deep-drawing process are summarized and the intelligent control architecture for blank holder force control is demonstrated in detail.
概述了拉深成形智能化的研究现状，详细叙述了压边力智能控制系统的架构。
It is concluded that the total strain theory can be used as a substitute for the incremental strain theory to analyse the force and deformation in sheet metal deep-drawing process.
结果表明，全量理论可代替增量理论分析、计算拉延成形过程的力和变形等。
It is concluded that the total strain theory can be used as a substitute for the incremental strain theory to analyse the force and deformation in sheet metal deep-drawing process.
结果表明，全量理论可代替增量理论分析、计算拉延成形过程的力和变形等。
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