In the present article, the influence of the self-tapping screw’s geometry during the thread forming processes in polymer types used in several industries was studied and analysed using experimental measurement and the finite element method. A number of parameters, such as assembly, type of materials and geometry, were studied. Several commercial screw topologies were also studied, and it was demonstrated that the geometry of the self-tapping screws could be optimised. A new geometry was proposed and then compared against the commercial self-tapping screws. The proposed screw obtained a smaller installation torque and a greater stripping torque, which resulted in a greater clamp load in the self-tapping joining. The clamp load loss due to relaxation was reduced up to 10% compared to the best existing geometry.

在本文中，使用实验测量和有限元方法研究和分析了自攻螺钉的几何形状在螺纹成型过程中对几种行业使用的聚合物类型的影响。研究了许多参数，例如装配，材料类型和几何形状。还研究了几种商用螺钉拓扑，并证明可以优化自攻螺钉的几何形状。提出了一种新的几何形状，然后将其与商用自攻螺钉进行了比较。所提出的螺钉获得了较小的安装扭矩和较大的剥离扭矩，这导致自攻接合中的夹紧载荷更大。与最佳的现有几何形状相比，由于松弛引起的夹具负载损失降低了10％。