(最新版)数控铣床毕业设计论文

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设计题目:经典零件的加工工艺

系 别: 自动化工程系 专 业: 机电一体化 班 级: 106025 姓 名: 章厚君 学 号: 33 设计小组: 章厚君，刘宏超 指导教师: 马海国 完成时间:

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【摘要】 .......................................................................................................................................... 3 前言 .................................................................................................................................................. 4 零件简图 .......................................................................................................................................... 5 1.1零件图的正确性及完整性分析 .................................................................................... 6 2.工艺方案的分析与拟定 ...................................................................................................... 6 2.1分析零件图 .......................................................................................................................... 6 2.2 毛坯的选择 ......................................................................................................................... 6 2.2.1确定毛坯的制造形式 ................................................................................................... 6 2.2.2毛坯的热处理 ................................................................................................................. 7 3.机床的选择 .............................................................................................................................. 7 3.1普通铣床的选择 ................................................................................................................. 7 3.2 加工中心的选择 ............................................................................................................... 8 4.工件的装夹与定位 .............................................................................................................. 10 4.1.1工件的装夹方案 .......................................................................................................... 10 4.1.2选择定位基准 ............................................................................................................... 10 4.2夹具、刀具、量具的选择 4.2.1 夹具的选择

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4.2.2 刀具的选择 .................................................................................................................. 12 4.2.3量具的选择 ......................................................................................................................... 13 5.1确定加工余量 .................................................................................................................... 13 5.2加工方案选择各表面及孔 ............................................................................................ 13 5.3 各表面及孔的加工方案 ............................................................................................... 14 5.3.1平面的加工方案 .......................................................................................................... 14 5.3.2 孔的加工方案 ............................................................................................................. 14 6.1切削用量的选择原则 ..................................................................................................... 14 6.2切削用量的确定 ..................................................................................................................... 14 6.3进给量f的确定 ............................................................................................................... 16

2 6.4切削深度αp的确定 ...................................................................................................... 16 【摘要】

6.5切削速度ｖc的确定 ...................................................................................................... 17 6.6主轴转速n的确定 .......................................................................................................... 17

7.拟订并确定加工工艺方案 ............................................................................................... 20 7.1拟订加工方案 .................................................................................................................... 20 7.2比较并确定最终加工工艺方案 .................................................................................. 22 8.工序内容拟定 ....................................................................................................................... 22 8.1 工序三的装夹方案......................................................................................................... 22 8.2 工步（3）的工艺分析 ................................................................................................. 22 8.3 工步（5）的工艺分析 ................................................................................................. 23 9.数控加工工艺文件 .................................................................................................................... 25 9.1数控加工工序卡 ..................................................................................................................... 25 9.2数控加工刀具卡 ..................................................................................................................... 25 结 束 语 ..................................................................................................................................... 26 参考文献 ........................................................................................................................................ 28

典型零件的加工工艺

本文是对典型零件加工技术的应用及数控加工的工艺性分析，主

要是对零件图的分析、毛坯的选择、零件的装夹、工艺路线的制订、刀具的选择、切削用量的确定、数控加工工艺文件的填写、数控加工程序的编写。选择正确的加工方法，设计合理的加工工艺过程，充分发挥数控加工的优质、高效、低成本的特点。还重点对配合零件的加工艺进行了分析，最后对零件自检数据进行分析，和加工的结果分析。 关键词：数控技术 铣削 加工工艺 Mastercam机械加工 数控编程 CNC milling machine AB matching parts machining process and

programming

Abstract

3 This is a typical the kind of parts of the application processing and manufacturing process of analysis nc, in particular parts of the analysis, blank choice, parts with or process of drafting, the choice of the cutting tool and the determination of usage processing document,nc nc processing

procedures in and write. Correct process, design and production process, full nc of quality and efficiency, low cost. also key features of the parts of the process was analysed and finally, data analysis self-inspection parts, and processing

of the results of analysis.

Key words: : Mastercam; mechanical processing; CNC milling; CNC Programming

前 言

数控机床(Numerial Control Machine Tool)是用数字化信号对机床的运动及其加工过程进行控制的机床。它是一种技术密集度及自动化程度很高的机电一体化加工设备，是数控技术与机床相结合的产物，它综合了应用计算机、自动控制、自动检测及精密机械等高新技术。利用数控机床加工，其产品加工质量好，加工精度和效率均比普通机床高，尤其在轮廓不规则、复杂的曲线或曲面、多工艺复合化加工和高精度要求的产品加工时，其优点是传统机床所无法比拟的。它的出现以及所带来的巨大效益引起世界各国科技界和工业界的重视。随着数控机床已是衡量一个国家机械制造业技术改造的必由之路，是未来工厂自动化的基础。需要大批量能熟练掌握数控机床编程、操作、维修的人员和工程技术人员。但是我们装备制造业仍存在“六有六缺”的隐忧，即有规模、缺实力，有数量、缺巨人，有速度、缺效益，有体系、缺原创，有单机、缺成套，有出口、缺档次。目前，振兴我国机械装备制造业的条件已具备，时机也很有利。我们要以高度的使命

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