一、螺旋压缩弹簧的不稳定状态当一根细而长的螺旋弹簧承受压力时,会产生不稳定现象,严重时,还会使弹簧从侧向飞出,影响安全生产。为了避免和减少弹簧的歪扭现象,往往给弹簧设置导杆或导套。但这样设计会由于弹簧和导杆(导套)之间的摩擦和磨损,降低了弹簧的工作性能。图1为两种常见的弹簧不稳定状态。它的两端磨平且与其中心线垂直。图1a弹簧的两端均固定,但无导向,在垂直于弹簧轴线的两块平板之间压缩。图1b弹簧的一端被固定,另一端导向或“强制平行”,即侧向可自由移动,但不能回转,它常用于支承各种设备和仪器的避振装置上。二、稳定性指标b弹簧的不稳定现象可以看作是一根支柱,当轴向 First, the unsteady state of the spiral compression spring When a thin and long spiral spring under pressure, it will produce instability, but also make the spring fly out from the side, affecting safety in production. In order to avoid and reduce the phenomenon of spring distortion, tend to set the spring guide or guide sleeve. However, this design may reduce the spring performance due to the friction and wear between the spring and the guide rod (guide sleeve). Figure 1 shows two common spring instabilities. It is polished at both ends and perpendicular to its centerline. Figure 1a Spring is fixed at both ends, but without guide, compressed between two plates perpendicular to the axis of the spring. Figure 1b One end of the spring is fixed, the other end is guided or “forced parallel”, that is, free to move laterally, but can not rotate, it is commonly used to support a variety of equipment and instruments damping device. Second, the stability index b spring instability can be seen as a pillar, when the axial