M2120内圆磨床的改造设计开题报告

欢迎下载本文档参考使用 如果有疑问或者需要 CAD 图纸的请联系 q1484406321 编编 号号 无锡太湖学院 毕毕业业设设计计 论论文文 相相关关资资料料 题目 题目 M2120 内圆磨床的改造设计内圆磨床的改造设计 信机 系系 机械工程及自动化专专 业业 学 号 0923098 学生姓名 祁 耀 华 指导教师 许菊若 职称 副教授 职称 2013 年 5 月 25 日 欢迎下载本文档参考使用 如果有疑问或者需要 CAD 图纸的请联系 q1484406321 目目 录录 一 毕业设计 论文 开题报告 二 毕业设计 论文 外文资料翻译及原文 三 学生 毕业论文 论文 计划 进度 检查及落实表 四 实习鉴定表 欢迎下载本文档参考使用 如果有疑问或者需要 CAD 图纸的请联系 q1484406321 无锡太湖学院 毕毕业业设设计计 论论文文 开开题题报报告告 题目 题目 M2120 内圆磨床的改造设计内圆磨床的改造设计 信机 系系 机械工程及自动化 专专 业业 学 号 0923098 学生姓名 祁 耀 华 指导教师 许菊若 职称 副教授 职称 2012年11月30日 欢迎下载本文档参考使用 如果有疑问或者需要 CAD 图纸的请联系 q1484406321 课题来源课题来源 与无锡开源机床集团有限公司合作改造 欢迎下载本文档参考使用 如果有疑问或者需要 CAD 图纸的请联系 q1484406321 科学依据科学依据 包括课题的科学意义 国内外研究概况 水平和发展趋势 应 用前景等 1 课题科学意义 磨削技术及磨床技术在机械制造行业占有极其重要的位置 磨削技术发展很快 在机械加工中起着非常重要的作用 随着高精度 高硬度机械零件数量的增加 以及 精密铸造和精密锻造工艺的发展 磨床的性能 品种和产量都在不断的提高和增长 2 国内外研究状况 水平和发展趋势 由于内圆磨床应用十分广泛 近年来 磨削技术得到了飞速发展 各种磨削新技 术 新工艺和新成品层出不穷 国际上有不少著名制造商 如日本的 OKAMMOTO MITSUI 三井 德国的 BLOHM ELB ABA 瑞士的 MAGERLE 意大利的 FAVRATO 等 在发展数控内 圆磨床生产数量的同时 还要努力提高数控磨床的质量和精度 由于 CBN 砂轮的使 用 强力磨削突破传统磨削的限制 生产倍率成倍提高 目前磨削线速度已高达 120m s 大吃深缓进给的强力磨削也得到了广泛应用 现代高精度磨削技术的发展 磨削尺寸精度达到 0 1 0 3 m 表面粗糙度达到 0 2 0 05 m 磨削表面变质层的残 留应力均很小 明显提高了加工零件的质量 数控是内圆磨床发展的重要方面 在相 当长的时期里 国外磨床的数控化率远远低于车床和铣床 在近十年来 由于数控技 术的发展 适用于磨床的数控系统也有了较大发展 数控系统的性价比大大提高 目 前国内高速磨削应用面不广 磨削速度一般不超过 60m s 与国外相差较大 磨削效 率也相对较差 大吃深缓进给的强力磨削方法在我国生产中应用不多 随着我国机械 制造业迅猛发展 国内对数控机床的要求也越来越高 自主研发了高精度机床 在控 制技术方面与国外差距还很大 主要采用 PLC 控制为主 国内各机床厂和机床研究 所对数控磨床及磨削技术的发展投入很大 取得了一些初步进展 如 CIMT 展出的上 海机床厂的 MKY7875 云南 MIGHTY 公司的 SGS 618II 威海机床厂的 MJ7116 等 欢迎下载本文档参考使用 如果有疑问或者需要 CAD 图纸的请联系 q1484406321 研究内容研究内容 本次设计主要针对数控磨床做部分改造 以适应加工产品时可以简单加工 精确定位 保证尺寸 提高加工效率 减轻工人劳动强度 此次改造对机床的导轨和驱动等进给部件做一定的修改 以适应产品的需要 保证在生产中的精度及效率 1 采用伺服电机作驱动元件便于实现自动控制 2 把原来滑动丝杠螺母副改为滚珠丝杠螺母副 便于实现回转运动转变为直 线运动 3 采用滚动导轨 拟采取的研究方法 技术路线 实验方案及可行性分析拟采取的研究方法 技术路线 实验方案及可行性分析 到无锡开源机床实地考察 了解内圆磨床各部件结构 针对要改造的部件着重 分析 确定进给部件需要改进的部分 作测绘画出部件 零件草图 根据主要参数 结构性能确定总设计方案 计算分析 选定材料和标准件 定出尺寸 并确定各部件尺寸 使用画图软件 Auto CAD 画出装配图及零件图 整理材料 出成果 把成果运用到实际中 得出实验结果 做设计总结 欢迎下载本文档参考使用 如果有疑问或者需要 CAD 图纸的请联系 q1484406321 研究计划及预期成果研究计划及预期成果 研究计划 2012 年 10 月 12 日 2012 年 12 月 31 日 按照任务书要求查阅论文相关参考资料 完成毕业设计开题报告书 2013 年 1 月 1 日 2013 年 1 月 27 日 学习并翻译一篇与毕业设计相关的英文材料 2013 年 1 月 28 日 2013 年 3 月 3 日 毕业实习 2013 年 3 月 4 日 2013 年 3 月 17 日 本磨床的的主要参数计算与确定 2013 年 3 月 18 日 2013 年 4 月 14 日 本磨床总体结构改造设计 2013 年 4 月 15 日 2013 年 4 月 28 日 零件图及三维画图设计 2013 年 4 月 29 日 2013 年 5 月 21 日 毕业论文撰写和修改工作 预期成果 根据提供的主要构件参数而计算出的传动构件的参数 尺寸及机体等是合理的 并且通过对本磨床滚动丝杠螺母和进给部分的改进 最终提高本磨床的精度 效率及 自动化程度 特色或创新之处特色或创新之处 采用伺服电机作驱动元件 使用半闭环紧急系统提高精度效率 采用滚珠丝杠螺母副 便于实现回转运动转变为直线运动 采用滚动导轨 已具备的条件和尚需解决的问题已具备的条件和尚需解决的问题 实验方案思路已经非常明确 已经具备内圆磨床主要参数及其结构 性能 并且已经掌握 Auto CAD 绘图软件 画出装配图及零件图 加强 Auto CAD 绘图能力 加强计算分析能力 指导教师意见指导教师意见 指导教师签名 年 月 日 教研室 学科组 研究所 意见教研室 学科组 研究所 意见 教研室主任签名 年 月 日 欢迎下载本文档参考使用 如果有疑问或者需要 CAD 图纸的请联系 q1484406321 系意见系意见 主管领导签名 年 月 日 英文原文英文原文 Mechanical Design Abstract A machine is a combination of mechanisms and other components which transforms transmits Examples are engines turbines vehicles hoists printing presses washing machines and movie cameras Many of the principles and methods of design that apply to machines also apply to manufactured articles that are not true machines The term mechanical design is used in a broader sense than machine design to include their design the motion and structural aspects and the provisions for retention and enclosure are considerations in mechanical design Applications occur in the field of mechanical engineering and in other engineering fields as well all of which require mechanical devices such as switches cams valves vessels and mixers Keywords Mechanical Design mechanisms Design Process The Design Process Designing starts with a need real Existing apparatus may need improvements in durability efficiency weight speed or cost New apparatus may be needed to perform a function previously done by men such as computation assembly or servicing With the objective wholly or partly In the design preliminary stage should allow to design the personnel fully to display the 欢迎下载本文档参考使用 如果有疑问或者需要 CAD 图纸的请联系 q1484406321 creativity not each kind of restraint Even if has had many impractical ideas also can in the design early time namely in front of the plan blueprint is corrected Only then only then does not send to stops up the innovation the mentality Usually must propose several sets of design proposals then perform the comparison Has the possibility very much in the plan which finally designated has used certain not in plan some ideas which accepts When the general shape and a few dimensions of the several components become apparent analysis can begin in earnest The analysis will have as its objective satisfactory or superior performance plus safety and durability with minimum weight and a competitive cost Optimum proportions and dimensions will be sought for each critically loaded section together with a balance between the strengths of the several components Materials and their treatment will be chosen These important objectives can be attained only by analysis based upon the principles of mechanics such as those of static for reaction forces and for the optimum utilization of friction of dynamics for inertia acceleration and energy of elasticity and strength of materials for stress and deflection of physical behavior of materials and of fluid mechanics for lubrication and hydrodynamic drives The analyses may be made by the same engineer who conceived the arrangement of mechanisms or in a large company they may be made by a separate analysis division or research group Design is a reiterative and cooperative process whether done formally or informally and the analyst can contribute to phases other than his own Product design requires much research and development Many Concepts of an idea must be studied tried and then either used or discarded Although the content of each engineering problem is unique the designers follow the similar process to solve the problems Product liability suits designers and forced in material selection using the best program In the process of material the most common problems for five a don t understand or not use about the latest application materials to the best information b failed to foresee and consider the reasonable use material may such as possible designers should further forecast and consider due to improper use products In recent years many products liability in litigation the use of products and hurt the plaintiff accused manufacturer and won the decision c of the materials used all or some of the data data especially when the uncertainty long term performance data is so d quality control method is not suitable and unproven e by some completely incompetent persons choose materials Through to the above five questions analysis may obtain these questions is does not have the sufficient reason existence the conclusion May for avoid these questions to these questions research analyses the appearance indicating the direction Although uses the best choice of material method not to be able to avoid having the product responsibility lawsuit designs the personnel and the industry carries on the choice of material according to the suitable procedure may greatly reduce the lawsuit the quantity May see from the above discussion the choice material people should to the material nature the characteristic and the processing method have comprehensive and the basic understanding 欢迎下载本文档参考使用 如果有疑问或者需要 CAD 图纸的请联系 q1484406321 Finally a design based upon function and a prototype may be built If its tests are satisfactory the initial design will undergo certain modifications that enable it to be manufactured in quantity at a lower cost During subsequent years of manufacture and service the design is likely to undergo changes as new ideas are conceived or as further analyses based upon tests and experience indicate alterations Sales appeal Some Rules for Design In this section it is suggested that applied with a creative attitude analyses can lead to important improvements and to the conception and perfection of alternate perhaps more functional economical and durable products To stimulate creative thought the following rules are suggested for the designer and analyst The first six rules are particularly applicable for the analyst 1 A creative use of need of physical properties and control process 2 Recognize functional loads and their significance 3 Anticipate unintentional loads 4 Devise more favorable loading conditions 5 Provide for favorable stress distribution and stiffness with minimum weight 6 Use basic equations to proportion and optimize dimensions 7 Choose materials for a combination of properties 8 Select carefully stock and integral components 9 Modify a functional design to fit the manufacturing process and reduce cost 10 Provide for accurate location and noninterference of parts in assembly Machinery design covers the following contents 1 Provides an introduction to the design process problem formulation safety factors 2 Reviews the material properties and static and dynamic loading analysis Including beam vibration and impact loading 3 Reviews the fundamentals of stress and defection analysis 4 Introduces fatigue failure theory with the emphasis on stress life approaches to high cycle fatigue design which is commonly used in the design of rotation machinery 5 Discusses thoroughly the phenomena of wear mechanisms surface contact stresses and surface fatigue 6 Investigates shaft design using the fatigue analysis techniques 7 Discusses fluid film and rolling element bearing theory and application 8 Gives a thorough introduction to the kinematics design and stress analysis of spur gears and a simple introduction to helical bevel and worm gearing 9 Discusses spring design including compression extension and torsion springs 10 Deals with screws and fasteners including power screw and preload fasteners 欢迎下载本文档参考使用 如果有疑问或者需要 CAD 图纸的请联系 q1484406321 11 Introduces the design and specification of disk and drum clutches and brakes Machine Design The complete design of a machine is a complex process The machine design is a creative work Project engineer not only must have the creativity in the work but also must in aspect and so on mechanical drawing kinematics engineerig material materials mechanics and machine manufacture technology has the deep elementary knowledge One of the first steps in the design of any product is to select the material from which each part is to be made Numerous materials are available to today s designers The function of the product its appearance the cost of the material and the cost of fabrication are important in making a selection A careful evaluation of the properties of a material must be made prior to any calculations Careful calculations are necessary to ensure the validity of a design In case of any part failures it is desirable to know what was done in originally designing the defective components The checking of calculations and drawing dimensions is of utmost importance The misplacement of one decimal point can ruin an otherwise acceptable project All aspects of design work should be checked and rechecked The computer is a tool helpful to mechanical designers to lighten tedious calculations and provide extended analysis of available data Interactive systems based on computer capabilities have made possible the concepts of computer aided design CAD and computer aided manufacturing CAM How does the psychologist frequently discuss causes the machine which the people adapts them to operate Designs personnel s basic responsibility is diligently causes the machine to adapt the people This certainly is not an easy work because certainly does not have to all people to say in fact all is the most superior operating area and the operating process Another important question project engineer must be able to carry on the exchange and the consultation with other concerned personnel In the initial stage designs the personnel to have to carry on the exchange and the consultation on the preliminary design with the administrative personnel and is approved This generally is through the oral discussion the schematic diagram and the writing material carries on If front sues the machine design goal is the production can meet the human need the product The invention the discovery and technical knowledge itself certainly not necessarily can bring the advantage to the humanity only has when they are applied can produce on the product the benefit Thus should realize to carries on before the design in a specific product must first determine whether the people do need this kind of product Must regard as the machine design is the machine design personnel carries on using creative ability the product design the system analysis and a formulation product manufacture technology good opportunity Grasps the project elementary knowledge to have to memorize some data and the formula is more important than The merely service data and the formula is insufficient to the completely decision which makes in a good design needs On the other hand should be earnest 欢迎下载本文档参考使用 如果有疑问或者需要 CAD 图纸的请联系 q1484406321 precisely carries on all operations For example even if places wrong a decimal point position also can cause the correct design to turn wrongly A good design personnel should dare to propose the new idea moreover is willing to undertake the certain risk when the new method is not suitable use original method Therefore designs the personnel to have to have to have the patience because spends the time and the endeavor certainly cannot guarantee brings successfully A brand new design the request screen abandons obsoletely many knows very well the method for the people Because many person of conservativeness does this certainly is not an easy matter A mechanical designer should unceasingly explore the improvement existing product the method should earnestly choose originally the process confirmation principle of design in this process with has not unified it after the confirmation new idea Grinding and grinding technology in the machinery manufacturing industry occupies an extremely important position grinding technology has developed rapidly plays a very important role in machining With the development of high precision high hardness increase of the number of mechanical parts precision casting and precision forging process the performance of the grinder variety and production in the continuous improvement and growth Internal grinder is widely used in recent years grinding technology has been rapid development of grinding of all kinds of new technologies new processes and new finished product after another International famous manufacturers such as Japan OKAMMOTO Mitsui Mitsui Germany BLOHM ELB ABA Switzerland MAGERLE Italy FAVRATO In the development of CNC grinder production quantity but also strive to improve the quality and accuracy of CNC grinding machines Due to the use of CBN grinding wheel power grinding break through the limitations of traditional grinding production ratio improved several times the grinding line speed up to 120M s to eat deep creep feed grinding has also been widely used The development of modern high precision grinding technology grinding size precision of 0 1 0 3 m the surface roughness of 0 2 to 0 05 the residual stress of the grinding surface of the metamorphic layer are very small and significantly improve the quality of the machined parts CNC is an important aspect of the development of internal grinder Foreign grinder for a long period of time far below the rate of NC lathes and milling machines In the last decade due to the development of numerical control technology suitable for grinding machines CNC system has made great progress numerical control systems greatly improve the cost effective A powerful wide domestic application of high speed grinding surface grinding speed is generally not more than 60 m s larger difference and abroad the grinding efficiency is relatively poor eat deep creep feed grinding method applied in our production Not much With the rapid development of China s machinery manufacturing industry the domestic requirements of CNC machine tools are getting higher and higher independent research and development of high precision machine tools control technology gap with foreign countries mainly adopts PLC control oriented Domestic Machine Tool Plant and Machine Tool Research Institute invested heavily in the development of CNC grinding and 欢迎下载本文档参考使用 如果有疑问或者需要 CAD 图纸的请联系 q1484406321 grinding technology has made some initial progress CIMT exhibition Shanghai Machine Tool Works MKY7875 the Yunnan MIGHTY company SGS 618II machine tool plant in Weihai MJ7116 The design focuses on CNC grinding machines to do part of the transformation to adapt to the processed products simple processing precise positioning to ensure that the size improve processing efficiency reduce labor intensity The transformation of feed components on the the machine rails and drive to do some modifications to adapt the accuracy and efficiency of production Servo motor drive components to achieve automatic control the original sliding screw nut rotary motion into linear motion and the use of the rolling guide in order to improve the accuracy Nature works hard to destroy bearings but their chances of survival can be improved by following a few simple guidelines Extreme neglect in a bearing leads to overheating and possibly seizure or at worst an explosion But even a failed bearing leaves clues as to what went wrong After a little detective work action can be taken to avoid a repeat performance Bearings fail for a number of reasons but the most common are misapplication contamination improper lubricant shipping or handling damage and misalignment The problem is often not difficult to diagnose because a failed bearing usually leaves telltale signs about what went wrong However while a postmortem yields good information it is better to avoid the process altogether by specifying the bearing correctly in The first place To do this it is useful to review the manufacture