微型数控三轴联动数控铣床得设计毕业论文.doc

摘要进行了设计论证了各种方案的优缺点，从而在把握通过分析比较各种设计方案，合理性经济性的指导思想，Abstract With the rapid development of science and technology, numerical control technology has being an important indicator of the level of a national machine manufacturing industry. Therefore it is necessary for students to master the initial structure of CNC machines and related operations, but CNC machines in general are large, high prices, so it is difficult to adapt to the needs of teaching. In order to improve the quality of teaching, and better implementation of quality education and training of creative thinking ability of students, the actual practical ability and scientific innovation, facilitate the experimental teaching, the teaching should have a simple CNC milling machine. It has the advantages such as small size, low cost, fully functional, high safety factor, superior performance and so on. This article on teaching the design of CNC milling machine gives a more reasonable design based on same factors such as the need to process the scope of the processing components, precision machine tools, and the demand of experimental, and detail some of the mechanical system design and calculation, including parts choice, the choice of the components, design, calculation and so on. CNC milling machine with this system can provide students with a large number of teaching experiments, and can meet the demands of teaching students. Key words: CNC milling machines; mechanical systems; accurate; minisize 目 录 摘 要 I Abstract II 第1章 绪论 1 1.1 数控机床的发展与现状 1 1.1.1 国际微型数控机床的发展与现状 1 1.1.2 我国微型数控机床的发展与现状 2 1.2 选题的背景和意义 2 1.3 研究的目的和任务 3 第2章 微型数控铣床总体设计方案 4 2. 1 常见微型数控铣床设计方案分析 4 2.1.1 微型数控铣床的分类 4 2.1.2 立式铣床的常用布局形式 5 2.2 微型数控铣床的布局形式 8 2.3 微型数控铣床总体传动方案的设计 8 第3章 主轴驱动的设计 9 3.1 主轴驱动及其控制 9 3.1.1 对主轴驱动的要求 9 3.1.2 主轴驱动及其控制方式 10 3.2 主传动系统的设计与计算 10 3.2.1 铣削力的计算 10 3.2.2 主轴电机的选择 12 第4章 进给系统的设计 13 4.1 进给系统的机械结构特点 13 4.2 滚珠丝杠的选择与安装方式的选择 14 4.2.1 滚珠丝杠特点 14 4.2.2 安装方式分类 14 4.2.3 丝杠旋转类安装形式 15 4.2.4 支撑轴承选型 17 4.3 Y方