数控车床的应用 毕业设计论文

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1、数控车床的应用摘要随着数控技术的不断发展和应用领域的扩大，数控加工技术对国计民生的一些重要行业（IT、汽车、轻工、医疗等）的发展起着越来越重要的作用，因为效率、质量是先进制造技术的主体。高速、高精加工技术可极大地提高效率，提高产品的质量和档次，缩短生产周期和提高市场竞争能力。而对于数控加工,无论是手工编程还是自动编程，在编程前都要对所加工的零件进行工艺分析，拟定加工方案，选择合适的刀具，确定切削用量，对一些工艺问题(如对刀点、加工路线等)也需做一些处理。并在加工过程掌握控制精度的方法,才能加工出合格的产品。本文

2、根据数控机床的特点，针对具体的零件，进行了工艺方案的分析，工装方案的确定，刀具和切削用量的选择，确定加工顺序和加工路线，数控加工程序编制。通过整个工艺的过程的制定，充分体现了数控设备在保证加工精度，加工效率，简化工序等方面的优势。制造业是所有从事制造的企业机构的总体，它是一个国家国民经济的支柱产业，也是一个国家综合国力的重要体现。制造业是我国入世后有竞争优势的行业之一，它一方面为全社会生产日用消费品创造价值，另一方面为国民经济各个部门提供生产资料和设备。据估计，工业化国家约70%-80%的物质财富来自制造业，约

3、有1/4的人口从事各种形式的制造活动。可见，制造业对一个国家的经济地位和政治地位具有至关重要的影响，在21世纪的工业生产中具有决定性的地位和作用。社会经济的发展对制造业的要求不断提高，随着科学技术特别是计算机技术的高速发展，传统的制造业已发生了根本性的变革，表现为产品的更新换代越来越快，生产批量越来越小，生产周期也越来越短，但产品的精度也越来越高。为适应这些变化，以数控技术为主的现代制造技术发挥了重要的作用。因此，学好数控方面专业技术已成为当代机械工业从业人员的必备条件。关键词：数控、刀具、机床、30目录第一章

4、数控机床的产生及其分类51.1数控机床的产生51.2按加工工艺方法分类51.2.1金属切削类数控机床51.2.2特种加工类数控机床···················································61.2.3板材加工类数控机床···················································61.3按控制运动轨迹分类·····················································61.3.1点位控制

5、数控机床·····················································61.3.2直线控制数控机床·····················································71.3.3轮廓控制数控机床····················································71.4按驱动装置的特点分类···················································81.

6、4.1开环控制数控机床·····················································8301.4.2闭环控制数控机床·····················································81.4.3半闭环控制数控机床···················································91.4.4混合控制数控机床·············································

7、········9第二章数控车床的加工工艺与技巧·········································112.1夹具安装要点···························································112.2合理选择夹具···························································112.3合理选择刀具··········································

8、·················112.4合理选择切削用量·······················································142.5切削用量的确定························································142.6走刀路径的选择·····························