火工品药剂自动压药工艺的关键技术

针对火工品药剂对象的压药控制过程具有严重的非线性时变和难以建立精确数学模型的特点,通过分析火工品药剂的压药特性,提出用一种具有线性特性的缓冲器(O型弹簧)来改善对象特性的新方法,用以降低对象压力的控制难度,从而提高火工品药剂压药压力的控制效果和火工品产品的质量。同时,分析线性缓冲器在火工品药剂自动压药工艺中的其他作用。利用ANSYS软件对线性缓冲器进行了静载强度和屈服极限的有限元分析计算, 并将计算结果和试验结果进行比较,具有很好的一致性,可用于指导和改进线性缓冲器设计。在火工品自动压药中的实际应用表明,该方法切实可行,能有效地提高火工产品压力控制精度和密度的一致性,并为提高航天火工品生产自动化的工艺水平奠定了基础。

KEY TECHNOLOGY OF AUTOMATIC POWDER PRESS OF LOADING MATERIALS FOR INITIATING EXPLOSIVE DEVICE

Because the pressing powder control process of loading materials for initiating explosive device exists serious nonlinear and time-varying problem, and is difficult to establish the accurate model after analyzing its pressing powder characteristic, a new method with a linear buffer is proposed to reduce the control difficulty, to improve the object characteristics and to enhance the control effect of powder pressure, quality and consistency of initiating explosive device. In addition, other functions of linear buffer are analyzed in the automatic powder press process of loading materials for initiating explosive device. The linear buffer is calculated using ANSYS finite element method, and the calculation is agreement with the ex- perimentation. It can be used to instruct and improve the design of linear buffer. The real application of linear buffer in automatic powder press of loading materials for initiating explosive device demonstrates that this new method is valid, and the density consistency of initiating explosive device is improved efficiently, and will prompt the automation producing level of aerospace initiating explosive device.