摘要：数控车床是基于数字控制并采用了数控技术的机床，数控车床的实用性很强，具有能够逻辑地处理和使用号码或其他符号编码指令规定的程序。数控车床的主轴部件是最关键部件，对加工零件质量有直接的影响。22260
本次主轴部件设计在综合大量资料的基础上，通过研究深入分析各主轴部件的不同性能，从中拟定了一个较为合理的主轴部件的结构方案，并对主轴进行了刚度校核。数控机床的主轴部件要求有高的精度、静态刚度、抗振性、热稳定性、耐磨性等，为保证合理的设计要求，主轴选择阶梯形的方案，轴承选择用双列圆柱滚子轴承和双列推力角接触球轴承相互配合的形式；由于主轴转速较高，保证回转精度的前提下，故采用高刚度型的轴承配置方案；轴承润滑方式采用循环式油脂润滑；轴承的密封形式采用迷宫密封；选择用异轴编码器。
毕业论文关键词：数控车床；主轴部件；主轴；轴承；编码器
CNC lathe spindle component design
Abstract：CNC lathes are based on digital control and the use of very practical CNC technology machines, CNC lathes, with a program capable of handling and use logical numbers or other symbols encoded Directive. CNC lathe spindle assembly is the most critical component, has a direct impact on the quality of machined parts.
The spindle assembly design in a lot of information on the basis of a comprehensive, in-depth analysis by studying the performance of each of the different components of the spindle, which developed a more rational structure of the program components of the spindle, and the spindle stiffness checked..CNC machine tool spindle assembly requires high accuracy, static stiffness, vibration resistance, thermal stability, wear resistance, etc., in order to ensure the rational design requirements, stepped spindle selection scheme, bearing selection with a double row cylindrical roller bearings and double row angular contact ball bearings in the form of mutual cooperation; due to higher spindle speed, the premise of ensuring the accuracy of the rotation, so the use of high stiffness of the bearing type configuration scheme; bearings lubricated by means of circulating oil lubrication; sealed bearings using the form labyrinth seals; choose different shaft encoder.
Key words：CNC lathe;spindle assembly;spindle;bearing;encoder
目录
1 绪论 1
1.1 数控车床主轴部件的发展状况 1
1.1.1数控车床主轴部件的国内发展状况 1
1.1.2数控车床主轴部件的发展趋势 1
1.2 课题的目的及内容 2
1.3 课题拟解决的关键问题 3
2 主轴部件 4
2.1 主轴部件的性能要求 4
2.2 主轴部件的组成结构 6
3 主轴的设计方案 8
3.1 主轴的结构设计 8
3.2 主轴选材及热处理 10
4 主轴轴承方案 11
4.1 轴承的配置方案的确定 11
4.2 轴承的类型方案的确定 12
5 主轴部件的润滑密封温升控制方案 14
5.1 润滑方案的确定 14
5.2 密封方案的确定 14
5.3 温升控制方案的确定 16
6 主轴编码器 17
7 设计计算 19
7.1 切削力的计算 19
7.2 最佳跨距的验算 21
7.3 主轴的弯曲刚度校核 22 EX-106数控车床主轴部件设计+CAD图纸:http://www.751com.cn/jixie/lunwen_14813.html