机 械 技 术 学 院 毕 业 设 计 论 文
轴承座的加工工艺及数控编程
无锡职业技术学院
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。
本文根据数控机床的特点，针对具体的零件——轴承座，首先对“轴承座”零件进行了简要分析，并阐述了它的部分作用。然后，根据零件的性质及零件图上各端面的粗糙度，确定了毛坯为铸钢件，及毛坯的尺寸和加工余量。最后合理地拟定轴承座的工艺路线图，制定部分工序中该工件的定位和夹紧方案，编制数控加工程序。通过整个工艺的过程的制定，从而对一个零件的加工过程更加熟练掌握，充分运用学校所学知识。
关键词 零件加工；工艺路线；数控技术；程序编制
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无锡职业技术学院
英文翻译：
ABSTRACT
With the continuous development of numerical control technology and application field expands, NC machining technology to the national economy and people's livelihood some important industry (IT, automobile, light industry, medical, etc.) is playing a more and more important role in the development, because the efficiency, quality is the subject of advanced manufacturing technology. High speed and high precision processing technology can greatly improve efficiency, improve product quality and grade, shorten the production cycle and enhance market competition ability. For nc machining, manual programming or automatic programming, before the part that will be processing technology analysis, drafting processing scheme, choosing the appropriate cutting tools, cutting parameter is determined, to some process problems (such as the cutting point, processing route, etc.) also need to do some processing. And master the methods of control accuracy in machining process.
With this article according to the characteristics of the nc machine tool, in view of the specific parts, bearing, first of all \and some of its role. Then, according to the nature of the components and parts drawing on each end surface roughness, determine the blank for the casting, and the size of the blank and machining allowance. Reasonable plan and the technology roadmap of the bearing, the end part of the process of the workpiece clamping scheme, the NC machining program. Through the whole process of the process, machining process and a more skilled, full use of knowledge in school.
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无锡职业技术学院
Key words Parts processing; Process route; numerical control
technology; programming
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无锡职业技术学院
目 录
摘 要 ............................................................................................................................ 2 第1章 绪 论 .............................................................................................................. 6 1.1 课题的研究意义 .............................................................................................. 6 1.2 课题的研究内容 .............................................................................................. 6 第2章 轴承座零件的数控加工工艺规程设计 ........................................................ 8 2.1 零件的分析 ...................................................................................................... 9 2.1.1 零件的功用分析 ........................................................................................ 9
2.1.2 零件的工艺性分析 .................................................................................... 9 2.2 毛坯的确定 .................................................................................................... 10 2.3 确定各表面的加工方法及选择加工机床与刀具 ........................................ 10 2.3.1 加工方法的选择 ...................................................................................... 10 2.3.2 机床与刀具的选用 .................................................................................. 12 2.4 划分加工阶段 ................................................................................................ 13 2.5 安排加工顺序 ................................................................................................ 14 2.6 拟定加工工艺路线 ........................................................................................ 15 2.7 确定加工余量、工序尺寸与公差 ................................................................ 15 2.8 零件的检测 .................................................................................................... 15 2.9填写工艺卡片 ................................................................................................. 16 第3章 轴承座零件的三维造型及编程 .................................................................. 18 3.1 轴承座零件的三维造型 ................................................................................ 18 3.2 轴承座零件的编程 ........................................................................................ 19 小 结 ........................................................................................................................ 20 参考文献 .................................................................................................................... 22 附录 ............................................................................................................................ 23 致 谢 .......................................................................................................................... 24
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