VH50型数控立车X轴进给系统结构设计【说明书+CAD】
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南京工程学院工 业 中 心本科毕业设计(论文)开题报告 题目: VH50型数控立车X轴进给系统结构设计 专 业: 机械设计制造及其自动化 班 级: D机加工123 学 号:231120526学生姓名: 宋春峰 指导教师: 刘桂芝 2016年 3月 10日本科毕业设计(论文)开题报告学生姓名宋春峰学 号231120526专 业机械设计制造及其自动化指导教师姓名刘桂芝职 称教授级高工所在院系工业中心课题来源D.自拟课题课题性质A.工程设计课题名称VH50型数控立车X轴进给系统结构设计毕业设计的内容和意义采用比较法,综合分析法,进行VH50型数控立车X轴进给系统结构的设计,使其能够对进给运动的速度和对刀具相对于工件的位置实现自动控制,并且保证机床的加工精度。毕业设计的具体内容:1、调研并熟悉课题及有关资料,完成外文翻译,写出开题报告;2、计算机绘制装配图、零件CAD图(总工作量2.5张以上0号图);3、完成课题的设计计算;4、课题技术经济分析;5、完成毕业设计说明书15000字以上。本课题研究的意义:本课题对VH50型数控立车X轴进给系统结构进行了设计,其意义如下:1、对数控车床的当前水平,发展趋势,以及国内外数控车床的发展有了详细的了解。2、对数控车床的进给系统有了深刻的了解,知道了进给系统中减速齿轮、联轴节、滚珠丝杠螺母副、丝杠支承、导轨副、传动数控回转工作台的蜗杆涡轮等机械环节的刚性、制造精度、摩擦阻尼特性等对执行件能否实现每一脉冲的微量移动有重要影响。3、提高了自己的学习能力,查找能力,归纳能力和总结能力。4、通过本次对数控立车X轴进给系统结构的设计,让我对大学四年所学的工程制图、工程力学、金属材料、机械原理、机械设计、数控机床等专业课程有了一个系统的复习和总结。英文期刊文章引用:作者. 题名. 期刊名, 出版年份,期号:起止页码文献综述从20 世纪中叶数控技术出现以来,数控机床给机械制造业带来了革命性的变化。随着计算机技术和现代设计技术的飞速发展以及装备制造业对数控机床的大量需求, 数控机床的应用范围在不断扩大并不断发展以更适应生产加工的需要。1数控机床是一种综合应用了计算机控制、精密测量、精密机械、气动、液压、润滑等技术的典型机电一体化产品,是现代制造技术的基础。当前,数控机床已称为企业的主要加工设备,在机械加工各领域得到了极为广泛的应用。近年来,数控机床的变化日新月异,各种结构新颖、性能先进的车削中心、加工中心,以及五轴加工、多主轴加工、复合加工等高速、高精度机床不断出现,它们正在逐步替代传统结构的数控机床,而成为主要产品。2我国在数控机床应用方面,越来越多地为航天、航空、汽车和能源等国家重点行业提供数控机床产品,并且开始出口;在数控系统方面,经济型数控系统已普及应用,还开发出了五轴联动以及多通道多轴联动的高档控制系统,应用于国产数控机床,打破了国外的技术封锁和限制,并制约了国外产品的价格。在数控机床品种构成方面,不仅在车、铣、镗、磨等通用型机床方面已实现数控化,数控技术还在加工中心、超精密机床、混联机床、复合机床、特种加工机床和一些专用机床产品上得到成功应用。3国外工业发达国家对数控车床的研究时间较长,而且经验丰富,技术水平较高,其特点如下:(1)高速高精与多轴加工成为数控车床的主流, 纳米控制已经成为高速高效加工的潮流。(2)多任务、多轴加工数控车床越来越多地应用到航空航天、能源、汽车及船舶等行业。(3)智能化加工与监测功能不断扩充, 车间的加工监测与管理可实时获取机床本身的状态信息,分析相关数据,预测机床的状态,提前进行相关的维护,避免事故的发生,减少机床的故障率,提高机床的利用率。(4)机床误差检测与补偿功能越来越强大, 能够在较短的时间内完成对机床的补偿测量。与传统的激光干涉仪相比,对机床误差的补偿精度能够提高34 倍,同时效率得到大幅度提升。(5)最新的CAD/CAM 技术为多轴、多任务数控车床提供了强有力的支持,可以大幅度提高加工效率。 4数控机床的发展日新月异, 高速化、高精度化、复合化、智能化、开放化、并联驱动化、网络化、极端化、绿色化已成为现代数控机床发展的趋势和方向。5本次我的设计课题是VH50数控立车的进给系统结构设计。立式数控车床简称为数控立车, 车床的主轴垂直于水平面, 有一个直径很大的装夹工作元件的圆形工作台。由于本身主要用于加工径向尺寸大、轴向尺寸相对较小的大型复杂零件, 所以体积一般较大, 属大型机床类。与其它机床相比, 立式数控车床的结构有以下特点:1) 体积较大, 适用于加工大型工件。2 ) 由于刀架的两个方向运动分别由两台伺服电动机驱动, 所以它的传动链短, 不必使用挂轮、光杠等传动部件。3 ) 为了拖动轻便, 数控车床的润滑都比较充分, 同时由于本身造价较高, 为延长使用时间,文献综述间, 滑动导轨也要求耐磨性好。4) 具有加工冷却充分、防护较严密等特点, 自动运转时一般都处于全封闭或半封闭状态。5 ) 一般配有排肩装置。6数控车床的进给运动是由数控装置经伺服系统控制的,进给伺服系统是数控车床的一个重要组成部分,其性能的优劣,直接影响零件的加工质量和生产效率。它由伺服驱动装置、机械传动装置、位置检测元件及位置调节器等组成。7数控车床的进给传动方式和结构特点与普通车床、自动和半自动车床截然不同。它只用于伺服电动机(直流或交流)驱动,通过滚珠丝杠带动刀架完成纵向和横向的进给运动。由于数控车床采用了脉宽调整伺服电动机及伺服系统,因此进给和车螺纹范围很大。快速移动和进给传动均经同一传动路线。一般数控车床的快速移动速度可达(1015)m/min。数控车床所用的伺服电动机除有较宽的调速范围并能无级调速外,还能实现准确定位。在走刀和快速移动下停止,刀架的定位精度和重复定位精度误差不超过0.01mm。8数控机床对进给运动的要求主要考虑如下几点: (1) 尽量减少运动件之间的摩擦阻力 (2) 提高进给系统中传动件的精度和刚度 (3) 减少每个元件的运动惯量 (4) 各传动部件的稳定性要好、寿命长 (5) 使用维护要方便快捷 。机械传动机构是进给伺服系统的重要组成部分,它包括减速齿轮、联轴节、滚珠丝杠螺母副、丝杠支承、导轨副、传动数控回转工作台的蜗杆涡轮等机械环节。它们的刚性、制造精度、摩擦阻尼特性等对执行件能否实现每一脉冲的微量移动有重要影响。为保证进给伺服系统的准确性,以达到较高的定位精度指标,特别要求机械机构的传动间隙小,摩擦阻尼小。另外,进给传动系统的驱动力矩很大,负载变化频繁,故对刚度也有特殊要求。9数控车床一般采用半闭环控制伺服进给系统控制,在正常加工过程,丝杠由伺服电机控制进行反方向运转时,会出现空隙的空运转现象,造成反向间隙误差。同时数控车床的传动和运动机构在外力作用下会产生弹性变形,并且加工部位与车床其他部位受力不同,造成弹性间隙发生也影响加工精度。此部分误差为反向间隙误差和正向传动运转误差的叠加。10数控车床丝杠进给系统刚度对系统的失动量和定位精度影响较大。基于进给系统质量和弹簧力学模型, 给出了进给系统轴向刚度和扭转刚度对失动量的影响与定位误差的解析表达式, 为进给系统结构设计、降低系统的失动量和提高系统的定位精度提供了理论依据;结合实例进行了应用分析计算, 取得了明显效果。数控机床的高速高精度化, 要求机床在载荷作用下具有较小的失动量和较高的定位精度, 而它们都与进给系统的刚度有很大的关系。 11对于现代数控车床而言,一般情况下,对于工件位置的控制,主要是通过伺服电机对滚珠丝杠的驱动实现的,如果滚珠丝杠出现传动误差,就可能影响车床的加英文期刊文章引用:作者. 题名. 期刊名, 出版年份,期号:起止页码文献综述工精度,这也是造成数控车床定位精度误差的重要因素之一。12在数控车床伺服进给系统中,减速机构有齿轮传动装置和同步齿形皮带传动装置。齿轮传动装置的主要目的:一是降速,将伺服电机的高速低转矩;输出变为负载所要求的低速大转矩: 二是使滚珠丝杠和工作台的转动惯量在系统中占较小的比例,以保证精度。13同步齿形带传动是一种新型的带传动。它利用齿形带的齿形与带轮的轮齿依次啮合传递运动和动力,因而兼有带传动、齿轮传动及链传动的优点;无相对滑动,平均传动比较准确,传动精度高,而且齿形带的强度高、厚度小、重量轻,故可用于高速传动;齿形带无需特别张紧,故作用在轴和轴承上的载荷小,传动效率也高,现已在数控机床上广泛应用。14对传动装置的总体要求是传动精度高,稳定性好,灵敏度高,响应速度快。 本次我的设计课题是数控立车的X轴进给系统结构设计,在设计过程中,我应该考虑所有进给系统影响机床性能的因素,并在设计过程中采取合理的措施消除这些影响。参考文献1 王福印.我国数控车床技术发展的现状与思考J.西部大开发(中旬刊),2011(2)2 龚仲华. 现代数控机床设计典例 机械工业出版社 2014.23 刘强,李冬茹.国产数控机床及其关键技术发展现状及展望J.航空制造技术,2010(10):26-304 江崇民,荀洪伟.数控车床技术发展现状及趋势.机械工程师 2012. 4 5 梁伟,王先.数控机床发展趋势. 桂林航天工业高等专科学校学报 2010 .2 6 刘心雄,郑家元. 立式数控车床的工业设计研究. 华中科技大学.2009.27 陈婵娟. 数控车床设计. 化学工业出版设8 王爱玲, 武文革. 现代数控机床(第2版) .国防工业出版社9 熊军. 数控机床原理与结构. 人民邮电出版社10 贾东庭. 数控车床加工精度的影响因素及提高措施.机械工程师 2015.911 吴南星, 胡如夫. 孙庆鸿数控车床丝杠进给系统刚度对定位精度的影响. 中国工程科学 2004.9 12 丁美玲.数控车床加工精度的影响因素分析及对策机电信息. 2014.1513 傅莉 数控车床实际操作手册.沈阳:辽宁科学技术出版社.2006.14 王栋臣,李常峰 主编.数控铣工(加工中心)操作技能实训图解.济南:山东科学技术出版社.2007.研究内容本次设计是数控车床进给系统结构设计,主要有绘制运动简图,完成X轴向惯量匹配、转矩匹配的计算、完成X向进给力X向滚珠丝杠预拉伸量的计算,考虑丝杠的刚度和热膨胀等因素选择合适的X轴滚珠丝杠、滚珠丝杠轴承、伺服电机、联轴器和导轨,完成装配图设计,绘制进给系统的装配图以及其他各个部件的零件图。 研究计划 第1周 (2.22-2.26) 收集资料,学习有关书籍文献,参观工厂,搜集设第2周 (2.29-3.04) 计过程中所要遵照的有关国家标准并进行学习提出完成课题的基本思路和方法,暨完成该课题所采用的技术路线、方案,要设计和完成的任务第3周 (3.07-3.11) 完成开题报告及外文材料翻译第4周 (3.14-3.18) 完成装配图草图设计,绘制进给系统运动简图第5周 (3.21-3.25) 完成X轴向惯量、转矩、匹配的计算、完成X向第6周 (3.28-4.01) 进给力X向滚珠丝杠预拉伸量的计算,完成装配图设计第7周 (4.04-4.08) 毕业设计中期检查第8周 (4.11-4.15) 进行零件图计算机绘图第9周 (4.18-4.22) 进行零件图计算机绘图第10周 (4.25-4.29) 进行零件图计算机绘图完成各零件及课题成本分析 , 完成各零件成本及课题成本计算第11周 (5.02-5.06) 递交论文初稿第12周 (5.09-5.13) 修改论文并定稿第13周 (5.16-5.20) 论文评审及答辩资格确定第14周 (5.23-5.27) 制作答辩PPT、打印图纸,准备答辩第15周(5.30-6.03) 毕业设计(论文)答辩第16周(6.06-6.10) 整理资料存档特色与创新本论文特色与创新如下: (1)通过对其刚度影响因素的分析,保证了进给系统的定位精度。 (2)通过考虑材料的热膨胀,保证了机床的加工精度。(3)通过对X轴惯量匹配和转矩匹配的计算,选择了适合的伺服电机。(4)通过对X向进给力和X向滚珠丝杠预拉伸量的计算,选择了合适的滚珠丝杠和滚珠丝杠轴承。指导教师意 见 指导教师签名: 2016年 月 日 分中心意见中心意见 分中心主任签名: 年 月 日 教学主任签名: 年 月 日Design of Low Cost Compact Modular Small Scale(CMSS)-CNC Lathe MachineAbstractThe emerging of micro factories technology has encourages the development of CNC machine into small scale design. It purposes is to create a smaller machine to save some space, reduce production cost, and lower energy consumption. Without reducing its precision level, this research conduct a design of CNC lathe machine consist of head stock, main spindle, X-Z axis, bed, tool holder, and X-Z motor actuators. The design was using three jaw chuck holding method and DC brushless motor as electric actuator for each axis. Additional harmonic gear was used as the transmission system. The design was provided in a compact design at 329 mm x 483 mm, assembled in modular design consist several of several module, and can be considered as low cost module with high availability component even in domestic market. It was calculated that the resolution of this Compact Modular Small Scale CNC Lathe machine could achieve 55.5 nm. It is believed that this design would be able to support many applied industries especially those who need high precision small component with low production cost.Keywords: CNC Machine, small scale, lathe, compact, modular, low costIntroductionMicro factories are one of the popular emerging technologies having a lot development within this two decade 1-9. This popularity was because of the increased demand of mechanical component into a smaller dimension up to micro or nano scale for many applications such as electronics control, automobile component, medical component, etc. 9.Days before, conventional industries on big and small mechanical components was produced by standard large equipment. This large equipment means larger space and higher energy consumption 10 emerging an increased production cost. Japan was one of the first countries to propose the reducing of machining size proportional to the size of the produced components 1, 9. This proposal is to reduce the production cost, save the energy consumption, spare some space, and keep every resource correspond to the initial size of produced component 9. Moreover, the concept can facilitate higher precision mechanism and simpler equipment than conventional machine. Hence, the concept suits for high precision industry for small component such as micro censor or micro actuator 9. This defines the low cost micro mechanical devices for reducing the production cost. For the present decades, many researches has conducted to develop micro machine for many application even in academicals scale or laboratorial scale 11-20. In Yamanaka Article 12, it was described about the using of different operation and geometric precision for lathe process according to the size of the produced part. Detailed explanation pointed out that when the size of the machine changes, the precision will also be altered and concluded that creating one small component is more advantageous when using one high precision machine 11-12. In Ojima et al. (2007) 21, graphical computation on the position of the tool is provided using CCD camera pointing to the end of the tool. This technique allows position feedback to the control unit and possible the detection of any dimensional disturbance in the lathe. Further research by Ojima introduced the use of electron microscope and SEM (scanning electron microscope) to provide greater detail and higher accuracy. Later of their researches 11 report a positioning errors correction in the order of 6 micrometers, and depths of cut of the order of 150 microns. McIntosh, Cordell and Johnson 22 also studied tissue engineering to produce implants with controlled architecture that can satisfy bioactivity demands and shaping requirements. Yarlagadda, Chandrasekharan and Shyan 11,23 assist cells attachment and growth in the interaction surface. Dunn et al 24 discussed the terms of the in vitro interaction and the in vivo bio-distribution in some animal models to investigate micro implants for drug delivery. Biomedical purpose is one of the developing segment as for the production of bone-polymer and boneceramic composite implants, as well as the development of special purpose machines (Quiroga, 2004 25; Rodrguez and Rojas, 2004 26; Neira, 2005 27; Quevedo, Rojas and Sanabria, 2006 28). Rojas (2002) 11,29 has reported about producing designated screw for joining human bone fracture or other medical application which need advanced fabrication of composite biomaterials. Jackson etal. (2005) 30 also studying micromachining in order to carefully handle the surface of microbeams with proper biocompatibility. Jackson et al used 70 micrometers in diameter rotating tool with speeds of up to 360,000 rpm, depths of cut of 50 to 100 micrometers, feed of 0.3 m/min and cutting speeds of 100 m/min to generate chips with a lamellar type structure in consistent with the high induced deformation rates. Its created an optimal surface texture and increase the speed of the tool up to 1 million rpm. The whole previous research justify that micromachining is important to be developed to support many application.Proposed design in this paper is a Compact Modular Small Scale (CMSS)-CNC Lathe Machine with two axes and one spindle module with the order of accuracy up to 2 m. designated machine would verify machinability of medical architectural level at 100-300 m 29.CNC Lathe System DesignA lathe system is a machine tool that rotates the workpiece against a tool to produce cylindrical or conical component and can also be used for drilling process or boring holes in cylindrical parts 31-32. Computerized numerical control (CNC) is one method to control the position and velocity of each motor actuator of machining tool in the lathe based on numerical data from operators. Hence, CNC lathe is a computerized controlled lathe system. The main parts of CNC lathe i.e. head stock, main spindle, X-Z axis, bed, tool holder, and X-Z motor actuator.Head StockHeadstock is a part of CNC Lathe machine serves to hold the electric motor and the transmission. Its powers the spindle and controls the spindle on designated rotary variety.Main SpindleSpindle is the part of lathe machine to hold the workpiece and rotate along with the workpiece during the lathe process. Angular velocity of spindle rotation was powered by adjustable electric motor via transmission system. Working piece was held in several holding ways i.e. three jaws chuck, collets, and four clamps (shown in figure 1) 31. In this present design, used model for holding the work piece is three jaws chuck because its component has a high availability on domestic market, simple, and easier in centering process. a b cFigure 1. Working piece holding types on lathe machine; (a) Three Jaws Chuck;(b) collets; (c) four clampsX axis and Z axis platformAxis platform is CNC lathe component serves as the base of tool holder which can move on two axes; x axis and z axis. Both axes were moved by the electric motor on linear trajectory along its respective axis. To achieve the linear movement along each axis, it is needed to dispatch a motion converter from rotary motion to linear translation along the working axis. Moreover, a motor driver is also needed to achieve more precise and more rigid movement. The axes use ball screw and linear guide to achieve the designated movement. Figure 2 shows the component of linear guide and ball screw. a bFigure 2. Component for converting motor rotary movement into linear X-Z axis movement; (a) ball screw; (b) linear guideTool HolderTool holder was attached in the X-Z axis platform (carriage) serves as the base of the cutting tool on this lathe machine. This part is move along with the X-Z axis platform during the lathe process.BedThis part is the supporting part of the CNC-Lathe machine which needs to be designed to present a solid base to hold the entire machine and also eliminate any possible interference vibration.Motor ActuatorOn the design process of CMSS-CNC Lathe machine, the movement of X and Z axis was powered from oriental motor DC motor brushless. The usage of this motor is because of it favorable feature i.e. 33:1) High efficiency because using permanent magnet rotor and have less secondary losses2) Reducible rotor inertia and high velocity response.3) Because of its high efficiency, it is possible to reduce motor size.4) Ability to fluctuate its velocity for even slight load changesBeside all of the technical consideration mentioned above, affordable price also become one of the primary consideration. With all those feature, the price of this motor was considered cheap compared with other motor. Table 1 shows the comparison of motor DC brushless, motor stepper, and motor servo at the same power.Table 1. Comparison of motor DC brushless, motor stepper, and motor servoFeatureDC BrushlessStepperAC ServoPower30 Watt30 Watt30 WattSpeed ControlAvailableAvailableAvailablePosition ControlN/AAvailableAvailableFeedback SignaAvailableN/AAvailablePrediction PriceIDRIDRIDRTransmission (Harmonic Gear)Before attached to X and Y axes of CNC Lathe, generated power from motor actuator was passed through the transmission system. Transmission system serves to transmit the power, reduce the velocity, increase the torque, and escalate the movement precision along X-Z axis. Possible transmission types to be used in this design are worm-gear, gear-pinion, belt-pulley, and harmonic gear. Figure 3 shows the description of those four transmission type. Harmonic gear transmission type was chosen for this design because of its advantages i.e. more rigid, big ratio for compact size, very low backlash, low losses, etc. a b c dFigure 3. Transmission system types; (a) worm-gear; (b) pinion-gear; (c) beltpulley;(d) harmonic gearCMSS-CNC Lathe Prototyping Result and DiscussionCMSS-CNC Lathe present design was resulted in a technical prototype consist of head stock, main spindle, x-z axis platform, spindle motor, tool positioning motor actuator, tool holder, and bed. This CMSS-CNC Lathe design was based on modular concept to match small scale factories and capable to achieve micro and nano scale precision. Nano scale precision will be achieved with high rigidity and low vibration.Compact DesignCompact design of CMSS-CNC lathe means that its dimension was optimally designed compatible to the size of the size of the produced work piece. In this present design, the CMSS-CNC lathe is at the size of A4 paper (329 mm x 483mm). Detailed specification of the dimension of designed CMSS-CNC lathe machine was shown in Table 2.Table 2. Dimension specification of CMSS-CNC Lathe machineSpecificationSizeUnitLength440mmWidth230mmHeight200mmWeight27kgX axis maximum stroke60mmZ axis maximum stroke60mmModular DesignModular design can be described that the whole module can be divided into several smaller modules which can independently work under different system 34.This prototype was designed in several separate modules which can be easily assembled into one module of CMSS-CNC Lathe. furthermore, each separate module of this CMSS-CNC Lathe can be substituted by another module, can be powered up, can be scaled up, and can also configured to serve another different system. Figure 4 shows the exploded view of CMSS-CNC Lathe machine build upon its composite parts. Figure 5 shows another configuration from another unit with replacing the headstock spindle unit with mill cutting tool module, and can also with replacing tool holder module with workpiece holder module. It is proven that reconfiguration is possible to upgrade this designed CMSS-CNC Lathe into much more axes. Figure 6 shows the complete technical prototype of the CNC Lathe machineFigure 4. Exploded view of the CMSS-CNC Lathe machine system bases on the compiling unitFigure 5. Another possible configuration of CMSS-CNC Lathe using modular design become 3-axis portable milling machineFigure 6. CNC Lathe Machine complete technical prototypeSmall Scale ResolutionResolution calculation on the smallest movement for this CMSS-CNC lathe design was using equation (1). Table 3 shows the specification on resolutions and ratio of the CMSS-CNC components.Rm=MRxTRxCR (1)where: Rm = Resolution of the machine / machine precision (mm)MR = Resolution of the motor / motor precision (rad)TR = Transmission ratio (rad/rad)CR = Converter ratio (mm/rad)Table 3. Specification of CMSS-CNC componentsComponent Type Parameter SpecificationDC Brushless MotorMotor Resolution 2 rad /30Harmonic GearTransmission Resolution 1/600 rad/radBall ScrewConverter Resolution10 mm / 2 radWorking resolution of the designed CMSS-CNC Lathe machine can be obtained by entering the specification data from Table 3 to equation (1):It is shown that, theoretically, the working resolution of this designed CMSS-CNC Lathe machine could reach out until 55.5 nm. It is considered that it can be called nano machining.Low CostThe economical aspect analysis shows that the software can be self-developed and the dominant cost emerged are for the portable PC as the main processing unit and the hardware. Table 4 shows the price list and the availability of the component of this CNC lathe machine.Table 4. Component price list and availabilityComponentPriceAvailability1Main Processing Hardware3.000.000 IDRAvailable in domestic market2Main Processing SoftwareN/A Can be self-developed3Secondary Processing Hardware2.000.000 IDRAvailable in domestic market4Secondary Processing SoftwareN/ACan be self-developed5Mechanical Raw Material5.000.000 IDR Available in domestic market6Mechanical Machining Process5.000.000 IDRAvailable in domestic market7X-Y Actuator8.000.000 IDRAvailable in domestic market8Spindle Actuator4.000.000 IDRAvailable in domestic market9Transmission system8.000.000 IDRAvailable in domestic marketTOTAL35.000.000 IDROverall, the cost of the whole processing system is approximately 35 million IDR and the availability is high even in domestic market. This production cost considered low because it can achieve micro scale accuracy and even nano scale accuracy. The average cost for CNC lathe machine for micro scale for the other brand is approximately 30 million and increased to 50 million for nano scale machine. So, this design can save about 15 to 20 million IDR and can save muchmore when it produced in mass production.ConclusionThis research concludes that the design of CMSS-CNC lathe consist of head stock, main spindle, X-Z axis, bed, tool holder, and X-Z motor actuators. This design can provide advantages such as compact design, modular machine with low production cost, and being able to perform lathe process up to 55.5 nm. This design can be upgraded into 3-axis portable milling machine or even more axes. The production cost is considered low because it was approximately 35million IDR and its component have high availability in domestic market so it wont need any additional custom charges. When the resolution has achieved nano scale, further researches will be needed for reducing any environment interference.AcknowledgmentThe authors would like to thank Indonesia Toray Science Foundation (ITSF) for the 2011 Research Grant and to Research Centre for Electrical Power and Mechatronics for the support and the devices on the completion of this portable CNC research. The Authors would also like to thanks Dian Andriani for the enormous continual support on international resources. The authors would also like to acknowledge all parties correspond to this research.References1 Kitahara T. Ishikawa Yu., Present and Future of Micromechatronics, in Int. Symposium on Micromechatronics and Human Science, 1997, pp. 13-20.2 Naotake Ooyama, Shigeru Kokaji, Makoto Tanaka and others., Desktop MachiningMicrofactory, in Proceedings of the 2-nd International Workshop on Microfactories,Switzerland, 2000, pp. 14-17.3 Clavel R., Breguet J-M., Langen H., Pernette E. 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