(数控加工)平面轮廓零件的数控加工及工艺分析
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毕业设计
题目:平面轮廓零件的数控加工及工艺分析
系 部
专 业 名 称
班 级
姓 名
学 号 如何提升自信
指 导 教 师
摘 要
高效率、高精度加工是数控机床加工最主要特点之一。利用数控机床加工,其产品加工的质量一致性好,加工精度和效率均比普通机床高出很多,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。本课题对异性体、复杂的曲线、多工艺复合化加工进行探索,设计出三种切实可行的工艺流程及工艺装备。在产品的加工过程中,工件在夹具内的定位和夹紧显得特别重要。须根据六点定位对产品进行合理的定位,欠定位、完全定位还是过定位都须根据实际的生产过程决定。夹具是涵盖了从加工到组装的几乎所有操作过程的一种装夹设备。由于大量的加工操作需要装夹,夹具设计在制造系统中就变得非常重要,它直接影响加工质量,生产率和制造成本。本文通过分析结构特点和加工要求,制定了一套较合理的夹具设计,从而为保证该零件的加工精度将提供一种经济实用的工艺装备,具有一定的实用价值。通过对各种定位夹紧装置的分析比较,选择并组合了一套既能够满足加工要求的,又比较简洁
的装置,并对各工步进行数控编程。
关键词:敝帚自珍造句数控加工,工艺流程,工艺装备,夹具设计
ABSTRACT
The high efficiency, the precision work are one of numerical control engine bed processing most main characteristics. Using the numerical control engine bed processing, its product processing quality uniformity is good, the processing precision and the efficiency outdo compared to the ordinary engine bed very much, especially when outline not rule, complex curve or curved surface, multi-craft recombine processing and high accuracy request product processing, its merit is the traditional engine bed is unable to compare. This topic to the opposite x body, the complex curve, the multi-craft recombine processing carries on the exploration, designs three practical and feasible technical process and the craft equipment. In the product processing process, the work piece appears in jig localization and the clamp specially importantly. Must act according t
o six localizations to carry on the reasonable localization to the product, owes the localization, locates completely cross the localization all to have to act according to the actual production process decision. The jig covered from has procesd clamps the equipment to the asmbly nearly all operating process one kind of attire. Becau the massive processing operation needs to install clamps, the jig design changes can it be that the constant weight in the manufacture system to want, it affects the processing quality directly, the productivity and the production cost. This article through the analysis support components, the air compressor snifting valve lid as well as the supporting the unique feature and the processing request which wraps, has formulated a t of reasonable jig design, thus for guaranteed this components the processing precision will provide one economical practical craft equipment, will have certain practical value. Through to each kind of localization clamp analysis comparison, cho and combines a t both to be able to satisfy the processing request, and the quite succinct installment, and carried on the numerical control programming to each step working procedure.
Key word: numerical control processing, technical process, craft equipment, jig design
1绪论 1
2零件分析 2
2.1零件的结构特点 2
2.2.1零件图纸的工艺分析 2
2.2.2加工内容以及相关要求 3
2.2.3加工要点分析 3
2.2.4零件图纸上的尺寸标注 3
2.2.5分析变形情况跑的英语怎么说 3
2.2.6零件的精度要求 4
3毛坯的选择 4
3.1分析毛坯的加工余量 4
3.2零件毛坯形状及余量的确定 4
4机床的选择 4
5零件加工定位基准的选择 5
5.1工件的装夹 5
5.2零件粗基准的选择 5
5.3零件精基准的选择 6
6选择并确定工艺装备 6
6.1刀具尺寸的选择 xsn6
6.2刀具材料的选择 7
6.2.1刀具材料性能 7
6.2.2各种刀具材料 7
6.3量具的使用表 8
台球美女6.4切削用量的确定 8
6.4.1主轴转速的确定 9
6.4.2进给速度的确定 10
6.4.3背吃刀量的确定 11
7切削液的选择 12
8工艺方案的制订 12
8.1加工方案的制订 12
8.2刀具卡片的制订 13又又的词语
8.3工艺过程卡 14
8.4工序卡 16
8.5走刀路线图 27
9程序编制 31
10加工零件 39
10.1建立工件坐标系 39
10.2对刀及刀补设定 39
10.3加工零件过程 39
11精度检验 40
总结 41
致谢 42
参考文献 43
附录 44
1天什么成语绪 论
随着科学技术的飞速发展和经济竞争的日趋激烈,产品更新速度越来越快,复杂形状的零件越来越多,精度要求越来越高,多品种、小批量生产的比重明显增加,激烈的市场竞争使产品研制生产周期越来越短,传统的加工设备和制造方法已难以适应这种多样化、柔性化与复杂形状零件的高速高质量加工要求。
护理安全
本课题来源于生产,是对所学知识的应用,它包括了五年所学的全部知识,在数控专业上具有代表性,而且提高了综合运用各方面知识的能力。程序的编制到程序的调试,零件的加工运用到了所学的AutoCAD、 CAXA制造工程师软件、机床操作、子程序、刀具的选择、零件的工艺分析、数学处理、工艺路线等一系列的内容。这将所学到的理论知识充分运用到了实际加工中,切实做到了理论与实践的有机结合。