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1、數(shù)控機床的加工與維護畢業(yè)論文目錄第一章數(shù)控機床的簡介·············································21.1數(shù)控機床的發(fā)展史···········································21.2數(shù)控機床的分類·············································31.3數(shù)控機床的發(fā)展趨勢·········································5第二章數(shù)控加工的準備階段························

2、·················92.1數(shù)控加工刀具的要求及種類···································92.2裝夾方式和夾具的選擇······································112.3數(shù)控銑床安全操作規(guī)程······································13第三章24實例加工··················································143.1零件圖紙······························

3、····················143.2材料的選擇················································143.3銑床的對刀················································153.4零件的加工工藝性分析······································153.5編制加工工藝過程··········································173.6編制數(shù)控刀具及加工工藝卡············

4、······················18第四章數(shù)控機床的維護············································204.1制訂數(shù)控系統(tǒng)日常維護的規(guī)章制度····························204.2應(yīng)盡量少開數(shù)控柜和強電柜的門······························204.3定時清掃數(shù)控柜的散熱通風系統(tǒng)······························20244.4經(jīng)常監(jiān)視數(shù)控系統(tǒng)用的電網(wǎng)電壓····························

5、··214.5定期更換存儲器用電池······································214.6數(shù)控系統(tǒng)長期不用時的維護··································21參考文獻·························································22致謝·····························································23第一章數(shù)控機床的簡介1.1數(shù)控機床的發(fā)展史20世紀中期，隨著技術(shù)的發(fā)展，自

6、動信息處理、數(shù)據(jù)處理以及電子的出現(xiàn)，給自動化技術(shù)帶來了新的概念，用數(shù)字化信號對機床運動及其加工過程進行控制，推動了機床自動化的發(fā)展?！〔捎脭?shù)字技術(shù)進行機械加工，最早是在40年代初，由美國北密支安的一個小型飛機承包商派爾遜斯公司（ParsonsCorporation）實現(xiàn)的。他們在制造飛機的框架及直升飛機的轉(zhuǎn)動機翼時，利用全數(shù)字電子計算機對機翼加工路徑進行數(shù)據(jù)處理，并考慮到刀具直徑對加工路線的影響，使得加工精度達到±0.0381mm（±0.0015in），達到了當時的最高水平?！　?952年，麻省理院在一臺立式銑床上，裝上了一套試驗性的數(shù)控系

7、統(tǒng)，成功地實現(xiàn)了同時控制三軸的運動。這臺數(shù)控機床被大家稱為世界上第一臺數(shù)控機床?！?4這臺機床是一臺試驗性機床，到了1954年11月，在派爾遜斯專利的基礎(chǔ)上，第一臺工業(yè)用的數(shù)控機床由美國本迪克斯公司（Bendix-Cooperation）正式生產(chǎn)出來。　在此以后，從1960年開始，其他一些工業(yè)國家，如德國、日本都陸續(xù)開發(fā)、生產(chǎn)及使用了數(shù)控機床?！?shù)控機床中最初出現(xiàn)并獲得使用的是數(shù)控銑床，因為數(shù)控機床能夠解決普通機床難于勝任的、需要進行輪廓加工的曲線或曲面零件。然而，由于當時的數(shù)控系統(tǒng)采用的是電子管，體積龐大，功耗高，因此除了在軍事部門使用外

8、，在其他行業(yè)沒有得到推廣使用?！〉搅?960年以后，點位控制的數(shù)控機床得到了迅速的發(fā)展。因為點位控制的數(shù)控系統(tǒng)比起輪廓控制的數(shù)控系統(tǒng)要簡單得多。因此，數(shù)控銑床、沖床、坐標鏜床大量