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立体光固化造型机机电系统设计说明书.doc

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立体光固化造型机机电系统设计说明书.doc

黑龙江工程学院本科生毕业设计I摘要自20世纪80年代中期以来,光固化快速成型技术的发展与应用越来越广泛和深入,光固化成型机的需求也越来越大。由此,本论文针对cps250型激光固化成型机的机械结构进行了设计,包括1、XY扫描机构2、Z轴升降机构3、刮刀机构,并且对其中的部分结构进行了改进。XY方向的平面扫描运动和刮刀的水平运动由原来的精密同步带传动改成精密滚珠丝杠传动,使其在行程较长时不出现抖动,有利于保证扫描精度,运动稳定。采用直线步进电机直接连接滚珠丝杠,响应更加快速准确,同时因无中间部件,使机械结构简单化,精度较高。通过对立体激光固化造型机机械结构的设计,使得其运动和传动更加合理和平稳,进而使其在生产过程中能够更好的进行生产。关键词立体激光固化扫描机构快速成型传动结构设计黑龙江工程学院本科生毕业设计IIABSTRACTThisarticlespecificallyforthreedimensionalmodelingoflightcuredstructuraldesignofmechanicalsystems.XYscanningnormallyusedtoscrewdrive.Throughthemotorrotation,withanotherevenreachedthescrewshaft,throughtotheXandYtothetwomotorsofrotationtoachieveXYtoscanZtothetable,alsobythescrewandarail.Ztothetablebytheextensionunits,columns,screwcomposition,itstransmissionisthroughthesamemotorrotationaxisistopassevenreachedthescrewbyscrewtoachievetherotationofthetablemoveupordown.Throughthethreedimensionalmodelingoflightcuredinthedesignandmechanicalsystems,makingtheircampaignsanddrivemorereasonableandstable,thenintheproductionprocesssothatitcanbettercarryoutproduction.KeywordSLAScanningagenciesRapidPrototypingTransmissionStructuredesign黑龙江工程学院本科生毕业设计目录摘要.....................................................................................................IABSTRACT................................................................................................II第1章绪论..........................................................................................11.1快速原型技术简介...................................................................................................11.1.1RPM的基本构思..........................................................................................11.1.2几种典型的快速成型技术...........................................................................21.1.3各种成型方法简介及对比............................................................................31.2快速成型精度概述...................................................................................................31.3立体光固造型SLA技术原理..................................................................................51.4立体光固造型SLA国内外现有技术水平.............................................................61.5立体光固造型SLA应用领域..................................................................................61.6本次设计的主要工作...............................................................................................71.6.1主要设计工作...............................................................................................71.6.2设计参数.......................................................................................................71.6.3设计思路及主要问题...................................................................................7第2章XY方向设计计算...........................................................................92.1设计任务...................................................................................................................92.1.1设计参数.......................................................................................................92.1.2方案的分析、比较、论证...........................................................................92.2脉冲当量和传动比的确定.....................................................................................102.2.1脉冲当量的确定.........................................................................................102.2.2传动比的确定.............................................................................................102.2.3确定步进电机步距角.................................................................................102.3丝杠的选型及计算..................................................................................................112.3.1计算丝杠受力..............................................................................................112.3.2滚珠丝杠螺母副的选型和校核..................................................................112.4导轨的选型及计算.................................................................................................152.4.1初选导轨型号.............................................................................................152.4.2计算滚动导轨副的距离额定寿命L.........................................................16黑龙江工程学院本科生毕业设计2.5步进电机的选择.....................................................................................................162.5.1传动系统等效转动惯量计算.....................................................................172.5.2所需转动力矩计算.....................................................................................182.6本章小结.................................................................................................................21第3章Z方向设计计算............................................................................223.1Z方向工作台设计..................................................................................................223.1.1设计任务......................................................................................................223.1.2设计参数.....................................................................................................223.1.3方案的分析、比较、论证.........................................................................223.2脉冲当量和传动比的确定.....................................................................................233.2.1脉冲当量的确定.........................................................................................233.2.2传动比的确定.............................................................................................233.2.3确定步进电机步距角.................................................................................233.3丝杠的选型及计算.................................................................................................243.3.1计算丝杠受力.............................................................................................243.3.2滚珠丝杠螺母副的选型和校核.................................................................243.4步进电机的选择.....................................................................................................283.4.1传动系统等效转动惯量计算.....................................................................283.4.2所需转动力矩计算.....................................................................................293.5本章小结.................................................................................................................31第4章刮刀系统设计...............................................................................324.1刮板的选择.............................................................................................................324.2刮板的材料和移动速度对涂层质量的影响.........................................................334.3本章小结.................................................................................................................34第5章PLC控制系统...............................................................................355.1步进电机的简介.....................................................................................................355.2步进电机的工作原理及特性.................................................................................355.3PLC简单介绍.........................................................................................................355.3.1为大量实际应用而开发的特殊功能..........................................................355.3.2网络和数据通信..........................................................................................355.3.3其它功能......................................................................................................36

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