数控机床的加工与维护论文

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1、数控机床的加工与维护毕业论文目录第一章数控机床的简介·············································21.1数控机床的发展史···········································21.2数控机床的分类·············································31.3数控机床的发展趋势·········································5第二章数控加工的准备阶段·······································

2、··92.1数控加工刀具的要求及种类···································92.2装夹方式和夹具的选择······································112.3数控铣床安全操作规程······································13第三章24实例加工··················································143.1零件图纸··················································143.2材料的选择

3、················································143.3铣床的对刀················································153.4零件的加工工艺性分析······································153.5编制加工工艺过程··········································173.6编制数控刀具及加工工艺卡··································18第四章数控机床的维护···········

4、·································204.1制订数控系统日常维护的规章制度····························204.2应尽量少开数控柜和强电柜的门······························204.3定时清扫数控柜的散热通风系统······························20244.4经常监视数控系统用的电网电压······························214.5定期更换存储器用电池······································214.6

5、数控系统长期不用时的维护··································21参考文献·························································22致谢·····························································23第一章数控机床的简介1.1数控机床的发展史20世纪中期，随着技术的发展，自动信息处理、数据处理以及电子的出现，给自动化技术带来了新的概念，用数字化信号对机床运动及其加工过程进行控制，推动了机床自动化的发展。　采用数字技术进行

6、机械加工，最早是在40年代初，由美国北密支安的一个小型飞机承包商派尔逊斯公司（ParsonsCorporation）实现的。他们在制造飞机的框架及直升飞机的转动机翼时，利用全数字电子计算机对机翼加工路径进行数据处理，并考虑到刀具直径对加工路线的影响，使得加工精度达到±0.0381mm（±0.0015in），达到了当时的最高水平。　　1952年，麻省理院在一台立式铣床上，装上了一套试验性的数控系统，成功地实现了同时控制三轴的运动。这台数控机床被大家称为世界上第一台数控机床。　24这台机床是一台试验性机床，到了1954年11月，在派尔逊斯专利的基础上，第一台工业用的数控机床

7、由美国本迪克斯公司（Bendix-Cooperation）正式生产出来。　在此以后，从1960年开始，其他一些工业国家，如德国、日本都陆续开发、生产及使用了数控机床。　数控机床中最初出现并获得使用的是数控铣床，因为数控机床能够解决普通机床难于胜任的、需要进行轮廓加工的曲线或曲面零件。然而，由于当时的数控系统采用的是电子管，体积庞大，功耗高，因此除了在军事部门使用外，在其他行业没有得到推广使用。　到了1960年以后，点位控制的数控机床得到了迅速的发展。因为点位控制的数控系统比起轮廓控制的数控系统要简单得多。因此，数控铣床、冲床、坐标镗床大量