文档介绍：本科生毕业论文(设计)
题目精密数控车床进给系统设计及精度分析
学院制造科学与工程学院
专业机械设计制造及其自动化专业
学生姓名
学号年级 2007级
指导教师
教务处制表
二Ο一一年六月三日
精密数控车床进给系统及精度分析
摘要:伺服进给系统是数控机床的重要组成部分,对机床整体性能有着决定性的影响。越来越多的研究人员在进给伺服系统的研究中投入大量精力。研究设计进给系统的结构,并进行误差计算和精度分析,有利于深入了解进给系统的原理和设计方法,进而探求可能的优化设计。设计了以滚珠丝杠螺母副为核心元件的精密数控车床十字工作台进给系统。通过机床设计和精密机械设计理论,首先进行了进给系统的总体方案设计,选择合适的滚珠丝杠螺母副,并通过计算选择进给系统的其他相关元器件;其次对传动系统的刚度、惯量匹配等进行了校核验算;然后进行了滚珠丝杠螺母副传动系统的误差来源分析,计算了所设计系统的定位精度,证明计算得出的结果较好得满足了提出的设计要求。研究了进给系统的误差来源,叙述了现有的误差补偿技术,分析了其补偿原理,对比了不同补偿方法的优缺点;最后利用Auto CAD软件绘制了相关的零件图和装配图。论文系统研究了精密数控车床的进给系统,得出了一个较为合理的设计结果,并完成了其结构的图纸绘制,研究了各种因素对进给系统性能,特别是系统精度的影响,较为清晰地理解了进给系统的结构、设计方法和精度原理,达到了预期的目的。
关键词:精密数控车床进给伺服系统滚珠丝杠螺母副精度分析
The Design and Precision Analysis C Lathes FeedingSystem
Abstract: Servo system is an important part of NC machine tools, having adecisive influence on the overall performance of machine tool. More and more researchers devote a great deal of energy in the study of servo system. Studying on design of feeding system structure, error calculation and precision analysis are helpful for understanding the feed system principle and design method, then exploring possible optimization design. Designed feeding system of core C lathe cross workbench with ball screw nut pair ponents. Through the machine design and precision mechanical design theory, first having the overall scheme design of the feeding system, selected the appropriate ball screw nut vice, and through putation selected feeding system other ponents; Second checked the inertia matching of the transmission system such as the stiffness; analysis error sources of ball screw nut pair of transmission system, designed location accuracy and repositioning precision of the system , proofed the good result calculated meeting the design requirements of the proposed. Studied the error sources of feed system, and introduced the existing pensation technology, analyzes pensation principle, compared the advantages and disadvantages of pensation method; Finally, using the Auto CAD software renderi