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1、郑州大学自考本科毕业论文专业数 控 技 术 姓名 准考证号 论文题目轴类零件的数控加工编程毕业设计 年月日目录目录2毕业设计(论文)任务书4摘 要5ABSTRACT6前 言7第一章 概 述81.1国内外数控发展概况81.2数控技术发展趋势81.3.智能化新一代PCNC数控系统10第二章 工艺方案分析112.1零件图112.2 零件图分析112.3 确定加工方法122.4 确定加工方案132.5数控设备的应用和维护13第三章 工件的装夹243.1定位基准的选择243.2定位基准选择的原则273.3确定零件的定位基准273.4装夹方式的选择273.5数控车床常用装夹方式283.6确定合理的装夹方式
2、28第四章 刀具及切削用量284.1 选择数控刀具的原则284.2 选择数控车削用刀具294.3确定切削用量314.4 设置刀点和换刀点33第五章 典型轴类零件的加工355.1 轴类零件加工工艺分析355.2 典型轴类零件加工工艺375.3 加工坐标系设置405.4 手工编程41第六章 数控车自动编程软件CAXA介绍446.1界面介绍446.2鼠标,键盘和热键456.3.交互方式466.4 如何画线506.5数控加工的概述566.6 数控加工的基本概念576.7刀具管理59第七章 结束语69第八章 致谢词70参考文献71毕业设计(论文)任务书(由指导教师填写)学生姓名学号教师姓名职称副教授题
3、目轴类零件的数控加工编程主要研究内容1、了解数控的构成与使用规程。2、绘制零件的CAD图。3、一定要保证零件的车削精度,不能出现零件有损坏的情况。4、选择合适的刀具。5、选择合适的夹具。6、编写零件的数控程序,并检查执行程序。7、CAXA的了解及应用。研究与设计方法通过各种渠道去了解:1、图书馆翻阅资料2、网上查阅3、咨询辅导老师 主要技术指标(或研究目标)无主要参考文献1邵泽强.数控原理与数控系统.北京理工大学出版社20092杜家熙.数控加工工艺.机械工业出版社,20093周文玉.数控加工编程及操作教程.中国轻工业出版社,20084顾京. 数控机床加工程序编制.机械工业出版社,20065隋秀
4、梅.CAXA制造工程师2006数控加工自动编程.机械工业出版社,20086杨伟群.数控工艺培训教程(数控车部分).清华大学出版社,20027刘哲.AutoCAD2004工程绘图与训练.大连理工大学0出版社,2004摘 要在数字化制造技术中,计算机数控技术和数控编程技术是最重要的技术之一,本文主要对模具加工所使用的动模板进行CNC加工,采用FANUC系统对动模板进行数控编程加工。首先是对工件进行加工工序的确定,并且进行工艺分析,装夹方式的选择,切削用量的确定。再对刀具进行了选择。然后就工艺路线进行编程加工。当前数控加工的重点发展方向是无图化生产、单件高精度并行加工、少人化无人化加工,这就要求数控
5、机床能满足高速、高动态精度、高刚性、热稳定性、高可靠性、网络化以及与之配套的控制系统,最重要的是模具三维型面加工特别注重机床的动态性能国内已有一些公司引进了高速车床,并开始应用。国内机床厂陆续开发出一些准高速的车床,并正开发高速加工机床。数控技术是指用数字、文字和符号组成的数字指令来实现一台或多台机械设备动作控制的技术。它所控制的通常是位置、角度、速度等机械量和与机械能量流向有关的开关量。数控的产生依赖于数据载体和二进制形式数据运算的出现。1908年,穿孔的金属薄片互换式数据载体问世;19世纪末,以纸为数据载体并具有辅助功能的控制系统被发明;1938年在美国麻省理工学院进行了数据快速运算和传输
6、,奠定了现代计算机,包括计算机数字控制系统的基础。数控技术是与机床控制密切结合发展起来的。1952年,第一台数控机床问世,成为世界机械工业史上一件划时代的事件,推动了自动化的发展。 数控机床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,是综合应用计算机、自动控制、自动检测及精密加工精度高,质量容易保证,发展前景十分广阔,因此掌握数控车床的加工编程技术尤为重要关键词:数控技术;手工编程;精度 AbstractIn the digitized manufacture technology, the computer numericalcontrol technology and the n
7、umerical control programming technology isone of most important technical, this article mainly moves thetemplate which uses for the mold processing to carry on the CNCprocessing, uses the Simens system to move the template to carry onthe numerical control programming processing. First is carries on
8、theprocessing working procedure to the work piece the determination, andcarries on the craft analysis, the attire clamps the way the choice,the cutting specifications determination. Again has carried on thechoice to the cutting tool. Then carries on the programming processingon the craft route.The c
9、urrent numerical control processing prioritize direction is doesnot have chart production, single unit high accuracy parallelprocessing, few people nobody melts the processing, this requestnumerical control engine bed can satisfy high speed, the high dynamicprecision, the high rigidity, the thermost
10、ability, the redundantreliability, the network as well as with it necessary control system,most importantly the mold three dimensional processingspecially paid great attention to the engine bed the dynamicperformance domestic to have some companies to introduce the highspeed milling machine, and sta
11、rted to apply. The domestic machine toolfactory develops some high speed milling machines one after another,and is developing high speed processes the engine bed.The numerical control technology is refers with digital, the writingand the mark composition digital command realizes or a many mechanical
12、devices movement control technology. It controls usually is theposition, the angle, the speed and so on the mechanical quantity andflows to the related switch quantity with the mechanical energy. Thenumerical control production relies on data carrier and the binarymode data operation appearance. In
13、1908, the perforation sheet metalexchange type data carrier was published; 19 centurys ends, and havethe assistance function take the paper as the data carrier the controlsystem to invent; Has established the modern computer, including computer numericalcontrol system foundation. The numerical contr
14、ol technology isdevelops with the engine bed control close union. In 1952, the firstnumerical control engine bed was published, becomes in the worldmechanical industry history an epoch-making event, impelled theautomated development.Has established the modern computer, including computer numericalco
15、ntrol system foundation. The numerical control technology isdevelops with the engine bed control close union. In 1952, the firstnumerical control engine bed was published, becomes in the worldmechanical industry history an epoch-making event, impelled theautomated development前 言在机械加工工艺教学中,机械制造专业学生及数控技术专业学生都要学习数控车床操作技术。让学生了解相关工种的先进技术,同时培养工作岗位的前瞻性;在讲授数控知识的同时,必须要求学生掌握基本的机械加工工艺,增强系统意识,理解手动操作与