摘 要

本論文的目的是通過對(duì)長(zhǎng)安之星二代汽車中門焊接生產(chǎn)線的分析、研究。利用計(jì)算機(jī)模擬焊接生產(chǎn)的過程。通過動(dòng)畫的形式模擬出焊接生產(chǎn)中：夾具夾緊順序及其運(yùn)動(dòng)過程，零件裝夾順序，焊鉗焊接順序，焊接設(shè)備工藝參數(shù)。長(zhǎng)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(guān)系，同時(shí)保證中門焊接質(zhì)量及焊接過程的順利。并且盡量縮短中間的輔助工序的時(shí)間和精簡(jiǎn)設(shè)備，減少企業(yè)的投資，使企業(yè)具備更強(qiáng)的競(jìng)爭(zhēng)力。
焊裝夾具對(duì)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(yīng)動(dòng)作迅速, 操作方便。焊裝夾具的設(shè)置應(yīng)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(dāng)。
長(zhǎng)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(shù)。長(zhǎng)安之星二代汽車中門的電阻焊全是電阻點(diǎn)焊。因此對(duì)點(diǎn)焊的工藝參數(shù)分析至關(guān)重要，電阻點(diǎn)焊的工藝參數(shù)包括焊接的電流，壓力，通電時(shí)間，維持時(shí)間，休息時(shí)間。長(zhǎng)安之星二代汽車中門的焊接設(shè)備是懸掛式點(diǎn)焊機(jī)DN3-160。DN3系列懸掛式點(diǎn)焊機(jī)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(jié)，這種變壓器決定了懸掛式點(diǎn)焊機(jī)可以使點(diǎn)焊在一定空間內(nèi)的任意位置進(jìn)行。此外，懸掛式點(diǎn)焊機(jī)的焊鉗、焊槍有多種結(jié)構(gòu)形式供選擇，所以懸掛式點(diǎn)焊機(jī)在本次中門的焊接生產(chǎn)中非常適應(yīng)。


關(guān)鍵詞：計(jì)算機(jī)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(zhǎng)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(shè)計(jì)特點(diǎn) 2
1.2.2汽車焊裝線的標(biāo)準(zhǔn)化 2
1.2.3模塊化設(shè)計(jì) 5
1.2.4長(zhǎng)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(zhǎng)安之星二代汽車中門焊裝線中的應(yīng)用 10
1.3.1電阻焊的原理及介紹 10
1.3.2電阻焊設(shè)備 10
1.3.3電阻焊在長(zhǎng)安之星二代中門焊裝線上的應(yīng)用 11
1.4汽車車身焊裝生產(chǎn)線焊接夾具的介紹及長(zhǎng)安之星二代中門焊裝夾具的應(yīng)用 12
1.4.1車身焊裝夾具的設(shè)計(jì)要求 12
1.4.2車門焊裝夾具的定位特點(diǎn) 13
1.4.3車門焊裝夾具的夾緊特點(diǎn) 13
1.4.4長(zhǎng)安之星二代汽車中門焊接夾具在生產(chǎn)線上的應(yīng)用 14
1.5新型車身材料的點(diǎn)焊研究 20
1.5.1鋁合金 20
1.5.2鍍鋅鋼板 23
2 長(zhǎng)安之星二代汽車中門焊接工藝的分析 24
2.1長(zhǎng)安之星二代汽車中門材料焊接性分析 24
2.2 長(zhǎng)安之星二汽車中門..