【正文】 本科機(jī)械畢業(yè)設(shè)計論文 CAD 圖紙 401339828 工業(yè)點焊機(jī)的設(shè)計摘 要點焊機(jī)又稱電阻焊機(jī)，是利用被焊工件的自身的電阻，在局部通過大電流產(chǎn)生高溫而使工件熔接起來的焊接設(shè)備。由于熱量來源于工件的內(nèi)部，因此電阻焊機(jī)有著廣泛的運用。我國電阻焊技術(shù)經(jīng)歷了工頻交流、直流脈沖、三相低頻、次極整流、微機(jī)控制和質(zhì)量監(jiān)控技術(shù)水平的提升過程。目前，我國采用微機(jī)控制的次極整流的點/縫焊機(jī)、帶恒流輸出的質(zhì)量控制電阻焊機(jī)的應(yīng)用已較為普遍，電阻焊質(zhì)量控制理論和技術(shù)、各種通用及專用電阻點/縫焊機(jī)、成套設(shè)備的研究和應(yīng)用已較為普遍和成熟，接近國際先進(jìn)水平。本課題主要要求設(shè)計一種工業(yè)用點焊機(jī)。此種點焊機(jī)主要用在機(jī)加車間，對焊接件進(jìn)行點焊，以完成零件的焊接固定。此種設(shè)備可以完全取代原有的手工操作，大大提高了零件加工的生產(chǎn)效率。關(guān)鍵詞：點焊機(jī)，電阻焊，焊接，結(jié)構(gòu)設(shè)計本科機(jī)械畢業(yè)設(shè)計論文 CAD 圖紙 401339828 Industrial spot welding machineABSTRACTAlso known as resistance spot welding machine, welder was using pieces of their own resistance, in the local heat generated through the highcurrent welding of workpieces up welding equipment. As a result of internal heat from the workpiece, so have a wide range of resistance welding machine to use. Resistance welding technology in China has experienced the exchange frequency, DC pulse, threephase lowfrequency, secondary rectification, microprocessor control and quality control of the process technology level. At present, the use of microputercontrolled secondary rectification point / sewing machine, with constant current output of the quality control of the application of resistance welding machine has been more widespread, resistance welding quality control theory and technology, a variety of general and resistance spot welding machine dedicated / professional resistance seam welding machine slit welder, plete sets of equipment for research and applications are more mon and mature, close to international advanced level. The main requirement of the task to design a spot welder for industrial use. Such a spot welding machine used in the main workshop, conducted on the spot welding parts, welding parts to plete fixed. Such equipment can pletely replace the existing manual operation, greatly improving the productivity of machining.KEY WORDS: Spot Welder，Resistance Welding，Welding，Structural Design本科機(jī)械畢業(yè)設(shè)計論文 CAD 圖紙 401339828 目 錄摘要 …………………………………………………………………………………………ⅠABSTRACT ……………………………………………………………………………………Ⅱ1 緒論 ....................................................................1 點焊機(jī)概述 .............................................................1 國外電焊機(jī)科技水平的現(xiàn)狀和發(fā)展 .........................................1 國內(nèi)點焊機(jī)行業(yè)的發(fā)展動向 ..............................................1 課題的目的與意義 ......................................................22 工業(yè)點焊機(jī)的分類與組成 ..................................................4 點焊機(jī)的分類 ..........................................................4 點焊機(jī)的基本組成 .......................................................43 點焊工作原理及傳動方案的確定 ............................................7 點焊機(jī)工作原理簡述 ....................................................7 點焊機(jī)工作流程簡述 ................................................7 點焊的工作原理及影響因素 ..........................................8 傳動系統(tǒng)的設(shè)計要求 ....................................................11 傳動方式的 確定 .......................................................124 點焊機(jī)主要零部件選型 ...................................................14 電動機(jī)的選擇 ..........................................................14 步進(jìn)電動機(jī)簡述 ...................................................14 步進(jìn)電機(jī)的應(yīng)用 ...................................................14 步進(jìn)電動機(jī)的選擇 .................................................15 氣缸的選擇 ............................................................16 同步帶輪的選擇 ........................................................18 同步帶輪的表示方法 ...............................................18 同步帶輪規(guī)格的 選擇 ...............................................19 同步帶的安裝方法 ...............................................19 同步帶運轉(zhuǎn)時注意事項 .............................................19 主軸的設(shè)計 ............................................................20 選擇主軸的材料 ...................................................20 初步確定主軸的直徑 ...............................................20 主軸的結(jié)構(gòu)設(shè)計 ...................................................20 工件定位裝置的確定 ....................................................21本科機(jī)械畢業(yè)設(shè)計論文 CAD 圖紙 401339828 5 總結(jié) ..................................................................23致 謝 ....................................................................24參 考 文 獻(xiàn) ..............................................................25本科機(jī)械畢業(yè)設(shè)計論文 CAD 圖紙 401339828 1 緒論 點焊機(jī)概述點焊機(jī)又稱電阻焊機(jī)，是利用被焊工件的自身的電阻，在局部通過大電流產(chǎn)生高溫而使工件熔接起來的焊接設(shè)備。由于熱量來源于工件的內(nèi)部，因此電阻焊機(jī)有著廣泛的運用?！　↑c焊機(jī)根據(jù)焊接工件的材料及厚度不同又分為:大功率點焊機(jī)、精密點焊機(jī)、微電子點焊機(jī)?！　〈蠊β室话愣际且?380V 電壓，其它點焊機(jī)一般都是 220V 的，從原理來看一般又分為儲能點焊機(jī)、交流脈沖點焊機(jī)、晶體管點焊機(jī)，逆變直流點焊機(jī)，純直流點焊機(jī)。 國外電焊機(jī)科技水平的現(xiàn)狀和發(fā)展(1)逆變焊機(jī) 某些著名的電焊機(jī)生產(chǎn)廠對逆變焊機(jī)的不斷改進(jìn)，使它的可靠性已接近一般電焊機(jī)的故障率，即 1%左右。 利用逆變焊機(jī)的固有的特征，使