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插头座的力学模型如图1所示,它由两个刚性端环其间联以n根等长弹簧丝组成,n根弹簧丝与竖直线倾斜成β角。旋转这些弹簧丝形成一个双曲面,该双曲面的颈处直径小于插针的直径。因此当插针插入后,将产生n个接触点或接触段。后一种情况是弹簧丝变形后有一段包在插针上。本文研究: (1)弹簧丝的变形曲线,从而导出产生点接触或线接触的条件。 (2)弹簧丝的最大变形(重要的设计参数)与其它基本设计参数之间的关系。 (3)弹簧丝的最大变形与插拔力和内应力之间的关系。按照所推导的公式,我们可以按所期望的弹簧丝受力而设计插头座的尺寸。该公式由实验证明了它的正确性。
The mechanical model of the plug seat shown in Figure 1, which consists of two rigid end rings are connected in series with n equal length spring wire, n spring wire and the vertical line inclined at an angle β. Rotating these spring wires creates a hyperboloid whose neck diameter is smaller than the pin diameter. Thus when the pin is inserted there will be n contact points or contact segments. The latter case is deformed after the spring wire has a package on the pin. This paper studies: (1) the deformation curve of the spring wire, thus deriving the point contact or line contact conditions. (2) The relationship between the maximum deformation of the spring wire (important design parameters) and other basic design parameters. (3) the maximum deformation of the spring wire and the relationship between insertion force and internal stress. In accordance with the derived formula, we can design the size of the plug seat according to the desired spring wire force. The formula proved by the experiment of its correctness.