长春理工大学本科毕业设计摘要激光切割的适用对象主要是难切割材料，如高强度、高韧性材料以及精密细小和形状复杂的零件，因而数控激光切割在我国制造业中正发挥出巨大的优越性。本文设计了一台单片机控制的数控激光切割机床，主要完成了：机床整体结构设计，Z轴、XY轴的结构设计计算、滚珠丝杠、直线滚动导轨的选择及其强度分析；以步进电机为进给驱动的驱动系统及其传动机构的分析设计计算；以89C51为主控芯片的数控系统硬件电路设计、系统初始化设计及系统软件方案设计和步进电机的控制流程设计。关键词:CNC激光切割机床结构设计长春理工大学本科毕业设计ABSTRACTLasercuttingmachinetoolwasusuallyusedforthehard-cuttingmaterial,suchashigh-strengthmaterial,highprecisionductilematerials,andsmartandcomplicatedcomponents.So,CNClasercuttinghasbeenplayinganimportantroleinChina'smanufacturingindustry.ThispaperdescribesthedesignofaSCM-controlledCNClasercuttingmachinetools.Moreattentionwaspaidontheoverallmachinedesign,Zaxis,XYaxisinthedesign,ball-screwandthechoiceoflinearmotionguideandintensityanalysis;thedrivesystemintowhichsteppermotorwasputandtheanalysisofthedrivesystemdesign;89C51chipwasmainlyusedforthedesignofhardwarecircuit,thedesignofsysteminitializationandthedesignofsteppermotor’scontrollingprogram.Keywords:CNC;lasercuttingmachinetools;architecture;design长春理工大学本科毕业设计目录摘要......................................................................................................................IABSTRACT...........................................................................................................II目录......................................................................................................................III第一章绪论..........................................................................................................11.1课题背景..................................................................................................11.2课题研究的目的和意义..........................................................................11.3国内外现状..............................................................................................21.4存在的主要问题......................................................................................31.5设计任务..................................................................................................31.6总体设计方案..........................................................................................4第二章机械部分设计..........................................................................................52.1机械部分XY工作台及Z轴的基本结构设计.......................................52.1.1XY工作台设计..............................................................................52.1.2.Z轴随动系统................................................................................52.2滚珠丝杠传动系统的设计计算..............................................................62.2.1滚珠丝杠的选型...........................................................................62.2.2丝杠的校核...................................................................................72.3直线滚动导轨的选型..............................................................................82.4步进电机及其传动机构的确定..............................................................92.4.1步进电机的特点优点...................................................................92.5齿...
