EX-108数控车床主轴部件设计+CAD图纸
时间:2018-12-22 21:02 来源:毕业论文 作者:毕业论文 点击:次
| 摘要：本设计是以EX-108数控车床主轴部件为主要内容。讲述了数控机床的结构设计要求：提高机床的结构刚度，提高机床结构的抗振性，以及减少机床的热变形。主要设计主轴的前端轴径的大小和形状、主轴跨距的计算及前后支撑的类型和轴承的选用。主轴是加工中心的关键部位，其结构优劣对加工中心的性能有很大的影响，因此，在设计的过程中为主要考虑对象。本次设计采用的轴承为双列圆柱滚子轴承和双向推力角接触球轴承。润滑方式采用的是脂润滑，前后都采用迷宫密封的方式。主轴编码器采用的安装方式为异轴安装，用同步带相连接。主轴与电机之间采用多楔带进行连接，传动比均为1:1。主轴端部的结构形式为A2-8，为已给定条件。主轴部件的材料选用45号钢，热处理方式为淬火和高温回火。31810 毕业论文关键词： 数控车床；主轴部件；轴承配置；润滑；密封 EX-108 CNC lathe spindle assembly design Abstract: The design is based on EX-108 CNC lathe spindle components as the main content. It tells the CNC machine design requirements: improve the structural rigidity of machine tools, machine tools to improve vibration resistance structure, and reduce the thermal deformation of the machine. The main design of the front end of the spindle shaft diameter the size and shape of the spindle support around the span calculation and selection of the type and bearing. Spindle machining center is a key component of the merits of its structure has a great influence on the performance of the machining center, therefore, in the design process is the main consideration objects. This bearing design uses a double row cylindrical roller bearings and angular contact thrust ball bearings. Lubrication grease lubrication is used both before and after the way with labyrinth seals. Installation of the spindle encoder uses different shaft mounted, connected with the belt. V-ribbed belt use between the spindle and motor connections, the transmission ratio is 1: 1. Structural forms of spindle nose A2-8, as the given conditions. Material selection spindle assembly 45 steel, heat treatment of quenching and tempering. Keywords: CNC lathes; spindle components; bearing arrangements; lubrication; seal 目录 1 绪论 1 1.1数控车床主轴部件的介绍 1 1.1.1 数控车床简介 1 1.1.2 数控车床主轴部件简介 1 1.2课题研究的意义 1 1.3数控车床主轴部件的发展 2 1.4设计要求 2 2 主轴部件设计 3 2.1 主轴部件的基本要求 3 2.1.1 回转精度 3 2.1.2刚度 3 2.1.3抗振性 3 2.1.4 热稳定性 3 2.1.5耐磨性 4 2.2传动装置的整体设计 4 2.3主轴部件的传动方案设计 5 2.3.1轴承的选择 5 2.3.2轴承配置方案设计 6 2.3.3轴承的预紧 8 2.4主轴部件的润滑和密封 9 2.4.1主轴部件的润滑 9 2.4.2主轴部件的密封 10 2.5主轴部件的结构设计 11 2.5.1主轴部件的结构 11 2.5.2主轴部件的轴向定位零件 11 2.5.3主轴部件的端部结构 12 2.6主轴部件的材料、热处理和技术要求 12 2.6.1对所设车床主轴的刚度要求 12 2.6.2对主轴滑动支承表面的耐磨性要求 13 2.7主轴编码器 13 2.7.1主轴编码器的功能 13 (责任编辑：qin) |