某火工品橋帶點(diǎn)焊專用焊接定位工裝夾具的設(shè)計(jì)

 
摘    要

本文根據(jù)某航天火工品的電發(fā)火元件，在將“橋帶”焊接于4根“導(dǎo)柱”頂部時(shí)，由于4根“導(dǎo)柱”在封裝時(shí)難以確保其相互位置精度，存在較大的分散性，使其難以準(zhǔn)確找到焊接位置,因此專門設(shè)計(jì)了一種具有記憶功能的焊接定位工裝夾具。該夾具通過在焊前分別調(diào)節(jié)好4根導(dǎo)柱的位置，使上電極分別對(duì)中4根導(dǎo)柱的中心并記憶住，焊接時(shí)則依次使4根導(dǎo)柱再現(xiàn)“記憶”位置，確保了焊接質(zhì)量。此外，對(duì)該夾具結(jié)構(gòu)及原理進(jìn)行了重點(diǎn)分析，繪制出該夾具系統(tǒng)的結(jié)構(gòu)總裝圖和拆出零件圖，并對(duì)一些比較重要的局部機(jī)構(gòu)進(jìn)行了原理分析和動(dòng)作的實(shí)現(xiàn)過程。

關(guān)鍵詞：火工品橋帶點(diǎn)焊，焊接夾具，定位

ABSTRACT

According to electric igniter in aerospace initiating explosive device, when ‘bridge bands’ are welding with the top of four ‘guide pillar’, it is difficult to find the welding position when the four ‘guide pillar’ are packaging because it is hard to ensure the accuracy or their mutual location and exist much more dispersion, so it specially design a fixture with the function of memory. The fixture adjustment the position of four ‘guide pillar’, then the upper electrodes are aligned to four ‘guide pillar’ and memory the position before welding, then it reappearance when welding. These steps ensure the quality of welding. Another, it mainly analyze the structure and principle of fixture, protract the assembly drawing and part drawing, some of the more important part structures were analyzed how to achieve the process.

Key words：initiating explosive devices bridge-belt spot welding, welding fixture, positioning 
 

目   錄

中文摘要 Ⅰ
ABSTRACT Ⅱ
1緒論 1
  1.1 焊接夾具應(yīng)用的背景 1
    1.1.1焊接夾具的定義 1
1.1.2焊接夾具的種類 1
1.1.3焊接夾具設(shè)計(jì)的基礎(chǔ)理論 1
1.1.4焊接夾具設(shè)計(jì)的方法與步驟 2
1.1.5焊接工裝夾具的作用 3
  1.2 焊接工裝夾具在火工品應(yīng)用中的發(fā)展與現(xiàn)狀 3
  1.3某航天火工品結(jié)構(gòu)分析及其定位方案確認(rèn) 4
    1.3.1結(jié)構(gòu)分析  4
1.3.2設(shè)計(jì)方案比較 4
1.3.3方案的選定 5
 2 某火工品橋帶點(diǎn)焊專用焊接定位工裝夾具結(jié)構(gòu)及其原理 7
 2.1 橋帶點(diǎn)焊機(jī)組成原理 7
 2.2 所焊焊件俯視圖 7
 3  主要單元結(jié)構(gòu)原理及設(shè)計(jì) 12
  3.1 凸輪圖 12
 3.2 彈簧滾球式分度盤 14
 3.3 導(dǎo)向滑道 16
 3.4 螺旋夾緊機(jī)構(gòu) 17
 3.5 彈簧夾緊機(jī)構(gòu) 18
 3.6 中心軸結(jié)構(gòu)分析及其軸承選擇 18
    3.6.1 軸強(qiáng)度分析 19
    3.6.2 套筒 19
     3.6.3滾動(dòng)軸承的選擇 19
結(jié)論 20
致謝 21
參考文獻(xiàn) 22
附錄A 23