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摘要针对老式37 mm人工增雨炮弹引信具有射程小、威力有限及破片过大的技术缺陷等缺点，本文对其进行改进，大大提高其发火率，减小破片大小。设计了隔爆机构、保险机构、自毁机构，计时精度高，作用可靠。为了使设计出的人工防雹增雨弹发火率大大提高，降低成本，设计中采用了双路点火装置，提高了发火率。为了使设计出的人工防雹增雨弹引信零件满足互换性要求，从而降低加工精度要求和生产成本，在设计中一般采用极值解法对人工防雹增雨弹引信所涉及到的尺寸链进行计算。本课题所计算的尺寸链包括零件尺寸链、部件尺寸链和总体尺寸链，共计60个。结论：采用双路点火装置提高了发火率，降低了在使用过程中造成人畜伤亡的可能，通过对所计算的尺寸链进行分析可知，该引信具有延期解除保险和自毁功能，可靠性有保证，符合GJB 373A—1997《引信安全设计准则》的相关要求，具有工程设计价值。20200
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关键字 时间引信 尺寸链计算 强度校核
毕业论文设计说明书（论文）外文摘要
Title Analysis and design of fuze system calculates a 37 mm of rain enhancement and hail suppression
Abstract
To the old 37 mm artificial rain shell fuze has the disadvantages of small range，imited power and technical defects of large fragments, this paper improves the，greatly improving the combustion rate, reduce the fragment size. The design of the explosion
mechanism，insurance mechanism, self destruct mechanism, high timing precision,
reliable function. In order to make the design of artificial rain enhancement and hail suppression missile firing rate greatly, reduce costs, in the design of dual ignition device，improve the combustion rate. In order to make the design of artificial rain enhancement and hail suppression fuze parts meet the requirement of inter change ability, thereby reducing the machining accuracy and production cost, dimension chain in the design of commonly used in extreme value method of artificial rain enhancement and hail suppression fuze involves calculation. The calculation of dimension chain including parts dimension chain, member dimension chain and over all dimension chain, a total of 60. Conclusion: the dual ignition device improves the combustion rate, reduce theresulting in human and animal casualties in the use of the process may be. The analysis of the dimension chains indicate that this fuze has the function of arming delaying、functioning at high impact angle and self-destruction, ensures the reliability, conforms to the relevant requirements of GJB 373A—1997 《The Safety Criteria For Fuze Design 》,is valuable for engineering design.
Keywords time fuze size chain calculation strength check
目 次
1 绪论 1
1.1 选题背景和意义 1
1.2 增雨弹简介 1
1.3 人工防雹增雨弹的基本组成部分 2
1.4 目前37 mm防雹降雨弹的优点和不足 2
1.5 引信概述 3
1.6 37 mm防雹增雨弹引信主要构造及作用原理 4
1.7 低成本设计 5
1.8 本论文的主要内容 6
2 强度计算 7
2.1 引信体强度计算 7
2.2 球座强度计算 10
3 抗力件设计计算 16
3.1 击针簧 16
3.2 剪切销 19
3.3 开口环 21
4 膛内点火机构性能计算 23