. 摘要世界制造业转移,中国正在逐步成为世界加工厂。美国、德国、韩国等国家已经进入工业化发展的高技术密集时代与微电子时代,钢铁、机械、化工等重工业正逐渐向发展中国家转移。我国目前经济发展已经过了发展初期,正处于重化工业发展中期。未来 10年将是中国机械行业发展最佳时期。美国、德国的重化工业发展期延续了 18年以上,美均延续了 12 年,我们估计中国的重化工业发展期将至少延续 10 年, 直到 2015 年。因此,在未来 10年中,随着中国重化工业进程的推进, 中国企业规模、产品技术、质量等都将得到大幅提升,国产机械产品国际竞争力增强,逐步替代进口,并加速出口。目前,机械行业中部分子行业如船舶、铁路、集装箱及集装箱起重机制造等已经受益于国际间的产业转移,并将持续受益;电站设备、工程机械、床等将受益于产业转移,加快出口进程。. 目录第一数控机床的产生··················································· 1 第二数控机床的发展 数控系统的发展····························································· 2 机床的发展趋势····························································· 2 第三数控机床的分类 按加工工艺方法分类······················································· 4 金属切削类数控机床······································································ 4 特种加工类数控机床······································································ 4 板材加工类数控机床······································································ 4 按控制运动轨迹分类······················································· 5 点位控制数控机床·········································································· 5 直线控制数控机床·········································································· 5 轮廓控制数控机床·········································································· 6 按驱动装置的特点分类···················································· 6 开环控制数控机床·········································································· 6 闭环控制数控机床·········································································· 7 半闭环控制数控机床······································································ 8 混合控制数控机床·········································································· 8 第四数控车的工艺与工装削 合理选择切削用量·························································· 10 合理选择刀具································································ 11 合理选择夹具································································ 11 . 确定加工路线·················
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