数控加工大作业.doc

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数控加工大作业.doc

目 录 摘 要 ··························································(Ⅰ) 1 数控加工的特点·················································(1) 2 数控设备的特点、发展、应用·····································(3) 2.1 数控设备的特点·············································(3) 2.2 数控设备的发展·············································(4) 2.3 数控设备的应用·············································(8) 3 数控工艺与程序编制·············································(8) 3.1 数控工艺···················································(9) 3.1.1 数控机床的选择·········································(9) 3.1.2 毛坯种类的选择 ········································(9) 3.1.3 加工工序的编排·········································(9) 3.1.4 定位基准的选择········································(10) 3.1.5 刀具的选择············································(12) 3.1.6 刀具路线的确定········································(12) 3.1.7 对刀点、换刀点的设置··································(12) 3.1.8 切削用量的确定········································(13) 3.2 程序编制··················································(14) 4 举例··························································(15) 4.1 零件图···················································(15) 4.2 零件图分析···············································(16) 4.3 机床的选择···············································(16) 4.4 零件工艺分析·············································(16) 4.5 数控编程·················································(17) 5 总结 ·························································(18) 参考文献·······················································(20) 摘 要 本文通过对数控机床程序的编写,数控机床的加工特点的描述。机床时社会生产力发展水平的重要标志,随着社会生产和科学技术不断发展,人们对机械产品的生产效率越来越高。同时,数控机床是一种自动化程度很高的机电一体化加工设备。本文是以轴类零件的数控车削加工的,从零件图纸、工艺分析……到最后的程序编写,形象的介绍了数控机床的全过程,和数控机床相对于普通机床的优点。 关键词:数控机床、数控编程、工艺分析、机床选择、走刀路线、数控加工 1 数控加工的特点 数控加工的特点: 数控机床是新型的自动化机床,它具有广泛通用性和很高的自动化程度。数控机床是实现柔性自动化最重要的环节,是发展柔性生产的基础。 数控加工体现了体现了精度高、效率高,能适应多品种中小批量、形状复杂零件的加工等优点,在机械加工中得到了广泛的应用。概括起来,数控加工有以下几方面的特点。 1、精度高、质量稳定 数控机床是在数控加工程序控制下进行加工的,一般情况下加工过程不需要人工干预,这就避免了操作者认为产生的误差。在设计制造

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