1、 I 摘摘 要要 数控机床是当今机械制造业中实现机电一体化的代表性先进设备。随着先进制造业的发展，对 旧机床的数控化改造，特别是普通股机床数控化改造已经成为摆在我们面前迫切而艰巨的任务。本 课题选择了对X5032铣床进给系统的数控改造方案，在叙述数控技术的历史、现状和发展的基础上， 通过对X5032旧机床的分析，结构机床改造的思想，提出了数控化改造的技术方案。改造的主要是机 械部分，即对丝杠、驱动元件步进电机和减速齿轮的改造。改造后的铣床除了能加工铣削键槽、平 面及孔等简单的零件外，还能加工形状复杂（如加工圆弧面、斜面及凸轮等）的零件，具有高精、 高效及加工产品范围广等特点。控制方式可以是开环
2、、闭环及半闭环。 机床改造后，显示了机床强大的工作能力和高度的可靠性，加工精度和生产率有较大的提高， 是提高企业数控化率的一条切实可行的途径。 关键词关键词 数控改造 进给 X5032铣床 II X5032 MILLING MACHINE FEED SYSTEM OF THE NUMERICAL CONTROL ABSTRACT NC(numerical control)machine is the representative of advanced equipment in current mechanical manufacture industry With the developin
3、g of modem manufacture industry,to retrofit old machine with NC ， especially to study the ordinary milling machines retrofitted with NC has become more and more urgent and arduous for USAfter introducing NC machines history and current status and the analysis of old mathine X5032,a novel scheme for
4、NC machine retrofitted and new NC machine selection is proposed .The main part to improve is the part of machine,which means improving screw,stepper motor and reduction gear.After transformation,the milling machine not only can be milling keyway ,flat, and the hole parts, but also processing of comp
5、lex shaping parts(such as the processing of circular surface,slope,and cam,etc),and has high precision, wide rage of efficient and processed products features.The control way can be open loop,closed loop and semi-closed loop. After retrofitted the work ability and reliability of the second-hand had
6、been enhanced greatly,so as to their working precision and productivity.It is proved that raising rate of NC control is a feasible way for enterprise to enhance their productivity and profit. 【KEY WORDS】 NC transformation feed X5032 milling machine III 目目 录录 第一章 绪论 1 1.1 数控机床的产生和发展. 1 1.1.1 数控机床的发展简史. 1 1.1.2 我国数控技术的发展. 1 1.1.3 数控机床发展趋势. 4 1.2 机床数控化改造业的发展及前景分析. 5 1.2.1链美国、日本和德国等发达国家把机床改造作为新的经济增长行业 5 1.2.2 机床数控化改造内容. 5 1.2.3 机床数控化改造的优越性. 5 1.2.4 机床数控化改造的现实意义和市场前景. 6
