振动试验条件下微光瞄准镜零位移机理分析

Mechanism Analysis of Zero Displacement Movement of LLL Sight Device Based on Vibration Experimental Condition

为解决微光瞄准镜零位移走动量问题,给出了瞄准镜分划板调节结构。通过对分划板调节螺杆螺纹机构在振动试验载荷作用下的受力分析,具体在当量摩擦角ρ变化时对周向扭矩Tz的累加值计算,揭示了微光瞄准镜在振动试验载荷作用下零位移走动机理。应用本课题研究开发的CMETS005型计算机控制多环境试验微光瞄准镜瞄具检测系统进行实际测试,误差精度≤0.05mil,测量范围≥40 mil,测量数据可靠,为其它直视瞄具的生产提供了理论分析基础。

For solving the zero displacement movement problem of low-level-light（LLL）sight device, the regulating structure of LLL sight device reticle was given. The movement mechanism under the action of vibration experimental load was revealed by analyzing the applied force of the adjusting screw rod and calculating the accumulated value of the circumference torque Tz within the range of the equivalent friction angle ρ. Type CMETS005 detection system of computer-controlled multi-environment test of LLL sight device with the measure precision 40.05 mil and the measure range ≥40 mil was developed and applied actually. The measured result shows that the measured data are reliable and provide theoretical basis for producing other direct-vision sight device.