麻花钻塑性成形断面优化设计

The Optimum Design of the Fracture Surface of the Plastic Formation of the Twist Drills

本文根据文献［１］的研究结论，在全面分析影响麻花钻断面形状及尺寸各种因素的基础上，建立目标函数、数学模型及约束条件，用优化设计求解最佳断面尺寸，使塑性成形时金属合理流动，达到消除裂纹的目的。

In accordance with the results of the Ref. Literature(1),the affecting factors of the section pattern and the section dimension of the twist drills were analysed in the paper. On this basis, a target function and a mathematical model, as well as restraint terms were set up. The idealest section dimention of the twist drill was worked out by the optimizational design. As a result, metal flowing would be reasonable and cracking would be eliminated as plastic deformation took place.