摘 要

本論文的目的是通過對長安之星二代汽車中門焊接生產(chǎn)線的分析、研究。利用計算機模擬焊接生產(chǎn)的過程。通過動畫的形式模擬出焊接生產(chǎn)中：夾具夾緊順序及其運動過程，零件裝夾順序，焊鉗焊接順序，焊接設備工藝參數(shù)。長安之星二代汽車中門的焊接生產(chǎn)線的工藝布局在中門焊接過程中起著重要的作用：包括焊接過程中中門的定位夾緊，保證中門零件之間正確的裝配關系，同時保證中門焊接質量及焊接過程的順利。并且盡量縮短中間的輔助工序的時間和精簡設備，減少企業(yè)的投資，使企業(yè)具備更強的競爭力。
焊裝夾具對于中門焊接具有重要意義，焊裝夾具必須保證中門焊接后能獲得正確的幾何形狀和尺寸, 尤其是保證中門上門窗等孔洞的尺寸和形狀，焊裝夾具應動作迅速, 操作方便。焊裝夾具的設置應便于施工, 有足夠的裝配、焊接空間, 不能影響焊接操作和焊工觀察并且夾緊可靠, 剛性適當。
長安之星二代汽車中門使用的材料是低碳鋼薄板?，F(xiàn)行的焊接方法中汽車工業(yè)的薄板焊接主要使用的是電阻焊技術。長安之星二代汽車中門的電阻焊全是電阻點焊。因此對點焊的工藝參數(shù)分析至關重要，電阻點焊的工藝參數(shù)包括焊接的電流，壓力，通電時間，維持時間，休息時間。長安之星二代汽車中門的焊接設備是懸掛式點焊機DN3-160。DN3系列懸掛式點焊機的焊接變壓器，一般都是懸掛在空中，通過柔性電纜與焊鉗或反作用式焊槍相連結，這種變壓器決定了懸掛式點焊機可以使點焊在一定空間內(nèi)的任意位置進行。此外，懸掛式點焊機的焊鉗、焊槍有多種結構形式供選擇，所以懸掛式點焊機在本次中門的焊接生產(chǎn)中非常適應。


關鍵詞：計算機仿真，生產(chǎn)線工藝布局，電阻焊，焊接夾具，工藝參數(shù)

ABSTRACT

The purpose of this paper is after analysis and research Chang'an Star second-generation rear door welding production lines. Use of computer simulation of welding production process. Through animation in the form of simulated welding production: clamping fixture and order movement, clamping order parts, welding clamp welding sequence, welding equipment technical parameters. Chang'an Star second-generation rear door in the process of welding production line layout in the process of welding the door play an important role: the process of welding including the positioning of the clamping doors to ensure that the right of the door between the parts of the assembly, while ensuring door in the welding quality of the welding process and smooth. And as short as possible central support processes of time and equipment to streamline and reduce corporate investment, the enterprises have stronger competitiveness.
Welding fixture in the door for the welding is of great significance, Welding fixture must ensure that the doors can be right after the welding of the geometric shape and size, especially in the door is to ensure that doors and windows and other openings the size and shape, Welding fixture should move quickly, Easy to operate. Welding fixture should be set up to facilitate the construction of adequate assembly, welding space, should not affect a welding operation and welder observation and clamping reliable, rigid appropriate.
Chang'an Star second-generation rear door in the use of the material is low carbon steel plate. The existing methods of welding of the automobile industry in the main sheet welding using a resistance welding technology. Chang'an Star second-generation rear door in the resistance welding all resistance spot welding. So on the spot welding process parameters critical analysis, the resistance spot welding process parameters, including the welding current, pressure, electricity, maintenance of time, rest time. Chang'an Star second-generation rear door in the welding equipment is hanging spot welding DN3-160. DN3 series of hang-point welder welding transformers, are generally hanging in the air, through the flexible cable and welding torch clamp or counterproductive-linked, such a decision transformer suspended spot welding machine can spot welding in a certain space within the arbitrary location. In addition, the hoisting of the welding clamp spot welding, torch a variety of forms for selection, hanging welder at this point is fit for the rear door welding.


Key words: computer simulation, layout of production lines, resistance welding, welding fixture, technical parameters













目 錄

中文摘要 Ⅰ
ABSTRACT Ⅱ
1緒論 1
1.1 本課題研究背景及意義 1
1.2汽車焊裝線的工藝布局及長安之星二代焊裝線的工藝布局 1
1.2.1汽車焊裝生產(chǎn)線的設計特點 2
1.2.2汽車焊裝線的標準化 2
1.2.3模塊化設計 5
1.2.4長安之星二代汽車中門焊裝線工藝布局 7
1.3電阻焊的介紹及在長安之星二代汽車中門焊裝線中的應用 10
1.3.1電阻焊的原理及介紹 10
1.3.2電阻焊設備 10
1.3.3電阻焊在長安之星二代中門焊裝線上的應用 11
1.4汽車車身焊裝生產(chǎn)線焊接夾具的介紹及長安之星二代中門焊裝夾具的應用 12
1.4.1車身焊裝夾具的設計要求 12
1.4.2車門焊裝夾具的定位特點 13
1.4.3車門焊裝夾具的夾緊特點 13
1.4.4長安之星二代汽車中門焊接夾具在生產(chǎn)線上的應用 14
1.5新型車身材料的點焊研究 20
1.5.1鋁合金 20
1.5.2鍍鋅鋼板 23
2 長安之星二代汽車中門焊接工藝的分析 24
2.1長安之星二代汽車中門材料焊接性分析 24
2.2 長安之星二汽車中門..