摘要在装备制造业日益发达的今天，作为装备制造业基础的数控机床在工业中的地位越来越重要。现在科技飞速发展，各国之间的竞争也愈发的激烈，装备制造业对国民经济和国防的重要性更加突出，因此，研制和开发具有优良加工性能和较高稳定性的数控机床对整个国家的生存和发展将产生重大影响。而滑枕作为车床中十分重要的一个部分，对整个车床的加工能力和加工精度起着至关重要的作用。机床滑枕连接着主轴箱和横梁，是镗铣加工中心的关键部件，其加工精度、动静态刚度、动静态力学性能等直接影响着整个加工中心的加工精度、精度稳定性以及抗振性。50671

本论文主要讨论的是大型缸套数控立式车床中滑枕部分机构的设计以及有限元分析。滑枕是立式车床中十分重要的部分，滑枕通过刀架与刀具连接。通过电机和丝杠螺母机构带动滑枕在竖直方向做直线运动，并且通过拖板和滚珠丝杠与定横梁连接，并沿着定横梁做水平方向直线运动，以此来进行工件的加工。论文通过对加工参数的要求确定滑枕的形状和材料，并通过计算选择丝杠和电机的型号以及对传动齿轮的选择设计。

毕业论文关键词：数控立式车床；滑枕；设计；有限元分析；

Abstract When the equipment manufacturing industry increasingly developed today, as the CNC machine tool equipment manufacturing base becomes more and more important in industry. Now the rapid development of science and technology, makes the competition between countries  increasingly fierce, the importance of the equipment manufacturing industry of the national economy and national defense is more prominent, therefore, the survival and development of CNC machine tools with excellent processing performance and high stability research and development of the whole country will produce major effect. But the ram as part of the lathe is very important, processing capability and machining accuracy of the entire lathe plays a vital role in the. Machine ram is connected with the spindle box and the beam, is a key component of boring and milling machining center, the machining precision, dynamic and static stiffness, dynamic and static mechanics performance directly affects the machining accuracy of the machining center, precision stability and resistance to vibration.

This paper is mainly about the design and finite element analysis of ram part mechanism of sliding cylinder vertical CNC lathe. Ram is a very important part in the vertical lathe, connected by a knife and tool slide. Drives the ram to do linear motion in the vertical direction through the motor and screw nut mechanism, and through the carriage and the ball screw is connected with the fixed beams, and beams along the fixed horizontal linear motion, in order to carry out the workpiece machining. The paper determines the ram shape and material through the processing parameters, and by calculating the choice of screw and motor type and the transmission gear selection design.

Keywords: CNC vertical lathe; ram; design;  element analysis.

目  录

第一章 绪论1

1.1 研究背景1

1.2 机床结构设计和有限元分析的国内外研究现状4

1.3 本课题的研究内容和研究方法4

1.4 本文的主要内容4

第二章 大型缸套专用立式车床滑枕组件的结构设计-5

2.1引言5

  2.2 确定滑枕组件的总体布局5

2.2.1 丝杠的合理选择5

2.2.2 电机的选择9

2.2.3 传动齿轮的设计和校核-10

  2.3 本章小结-13

第三章 大型缸套专用立式车床滑枕组件三维CAD建模-14

  3.1 CAD的概述14

3.1.1 计算机辅助设计的基本概念及内容-14

3.1.2 计算机辅助设计的发展-15