数控铣床伺服进给系统设计下载_word模板

沈阳理工大学学士学位论文I摘要本文完成了对数控铣床伺服进给系统的设计。首先确定了总体设计方案，和X、Y、Z三个方向的运动参数，之后根据运动参数确定了数控机床的传动方案，由导程、当量动载荷、最小螺纹底径确定了X、Y、Z三个方向的滚珠丝杠以及由最大切削负载转矩、负载转动惯量等确定了X、Y、Z三个方向的伺服电机，并且校验了X、Y、Z三个方向的伺服进给系统。确定了结构方案后，用CAXA实体设计软件对结构中丝杠、导轨、伺服电机等零件进行了3D建模，之后装配出X、Y、Z三个方向的伺服进给系统，并生成出数控铣床伺服进给系统的二维工程图，最后对其进行了运动仿真。关键词：进给系统；滚珠丝杠；伺服电机；CAXA实体设计沈阳理工大学学士学位论文IIAbstractInthispaper,themachineservosystemsoftheCNCmillingaredesigned.First,overalldesignschemeisdetermined，andthemotionparametersoftheX,Y,Zthreedirectionsaredetermined，thenaccordingtothemotionparameters，thetransmissionschemeoftheCNCmachineisdetermined，andbythelead,equivalentdynamicload,andbottomdiameterofthesmallestscrew，theballscrewsoftheX,Y,Zthreedirectionsaredeterminedandbythemaximumcuttingloadtorque,momentofinertiaoftheload，theservomotorsoftheX,Y,Zthreedirectionsaredetermined，andtheservofeedsystemsoftheX,Y,Zthreedirectionsarechecked.Afterdeterminingtheprogramofthestructure，three-dimensionalmodelingofthescrews、rails、servomotorsandotherpartsinthestructurearesetupbyusingCAXAphysicaldesignsoftware，thentheservosystemsoftheX,Y,Zthreedirectionsareassembled，andtwo-dimensionalengineeringdrawingsoftheservosystemsoftheCNCmillingmachinearegenerated，finallythemotionsimulationissetup.Keywords:Feedsystem;BallScrew;Servomotor;CAXAphysicaldesign沈阳理工大学学士学位论文III目录摘要..........................................................................................................错误!未定义书签。Abstract.....................................................................................................错误!未定义书签。目录..........................................................................................................错误!未定义书签。1绪论......................................................................................................错误!未定义书签。1.1课题背景和意义........................................................................错误!未定义书签。1.2国内外研究现状........................................................................................................11.3数控机床的发展趋势...............................................................................................11.4本课题的研究内容和方法.......................................................................................31.5本章小结...................................................................................................................42总体方案设计......................................................................................................................52.1伺服进给系统的基本要求........................................................................................52.2铣床的技术要求........................................................................................................52.3传动方案设计............................................................................................................52.4主切削力及切削分力及切削分力计算....................................................................62.4.1计算主切削力................................................................................................62.4.2计算各切削分力............................................................................................62.5本章小结...................................................................................................................63滚珠丝杠及伺服电动机的选择..........................................................................................83.1X轴方向进给系统的计算.......................................................................................83.1.1X轴滚珠丝杠的选择....................................................................................83.1.2X轴伺服电机的选择..................................................................................113.1.3X轴系统校验..............................................................................................133.2Y轴方向进给系统的计算......................................................................................163.2.1Y轴滚珠丝杠的选择..................................................................................163.2.2Y轴伺服电机的选择..................................................................................203.2.3Y轴系统校验..............................................................................................213.3Z轴方向进给系统的计算.......................................................................................243.3.1Z轴滚珠丝杠的选择...................................................................................243.3.2Z轴伺服电机的选择...................................................................................273.3.3Z轴系统校验...............................................................................................293.4本章小结.................................................................................................................3243D建模..............................................................................................................................334.1CAXA实体设计的介绍.........................................................................................334.2丝杠设计.................................................................................................................334.2.1设计思路.............