气动-机械微安保结构设计与性能测试

The Design and Performance Testing of A Pneumatic Mechanical S&A Structure

针对新型火工品的微型化、可靠性要求,设计了一种气体驱动的机械微安保结构,对其核心的机械安保层进行了静力学仿真,确定微弹簧最佳加工材料为65Mn弹簧钢,线宽为0.2mm时微弹簧解除保险所需的理论压强为4.3MPa。通过微加工技术,制作了原理样机,并测试其性能。结果表明样机可以成功解除保险,并实现安保功能。

According to the requirements of miniaturization and reliability for the new pyrotechnic initiator, a micro mechanical S＆A structure driven by gas was designed in this paper. It was proceeded that the static structure simulation of the mechanic S＆A layer by the ANSYS Workbench software, the results of the static SllUctuml simulation showed that 65 spring manganese steel was the best material of the micro spring, and the critical pressure of mechanic arming was 4.3MPa for the spring with 0.2mm width. The principle prototype was prepared by micro-fabrication technology, and its performance was tested. The results show that the prototype can be successfully removed and achieve security functions.