摘要：数控车床是一种高精度、高效率的自动化机床。配备多工位刀塔或动力刀塔，机床就具有广泛的加工艺性能，可加工直线圆柱、斜线圆柱、圆弧和各种螺纹、槽、蜗杆等复杂工件，具有直线插补、圆弧插补各种补偿功能，并在复杂零件的批量生产中发挥了良好的经济效果。本次设计中，首先对4种基本的传动方案进行了比较，选择了合适的传动方案，并对带传动部分进行了设计，择优选择了同步带传动，并设计出了主轴。其次，是对数控车床主传动系统各个部件的设计，包括了数控车床主轴的设计计算，带传动的设计计算，主轴及编码器轴的轴承的选用，键的选用，主轴的紧固定位设计，主轴轴承的润滑与密封进行的设计级计算。最后，对数控机床的主要部件进行了校核，包括主轴的强度和刚度，轴承的寿命，进行了校核。6381
关键词：数控车床；主传动；传动；主轴部件；强度刚度校核
CNC lathe main drive system design
Abstract： CNC lathe is a precision, high-efficiency automatic machine. Equipped with a multi-station turret or power turret, plus a wide range of tools for process performance, processability straight cylindrical, cylindrical slash, arcs, and a variety of thread, groove, worm and other complex parts, with linear interpolation, circular interpolation various compensation and the mass production of complex parts played a good economic results. This design, the first of four kinds of basic transmission schemes are compared to select the appropriate transmission scheme, and part of a belt drive design, merit-based selection of the belt drive, and design of the spindle. Secondly, the main drive of CNC lathes various components of the design, including a CNC lathe spindle design calculations, design and calculation of belt drive spindle and encoder shaft bearing selection, key selection, spindle positioning fastening design, spindle bearing lubrication and seal for design-level computing. Finally, the main components of the CNC machine tool for the check, including the strength and stiffness of the spindle, bearing life, were checked.
Key word：CNC lathes; main drive; drive; spindle assembly; strength stiffness check
目 录
1 绪论 1
1.1 选题的目的和意义 1
1.2 数控车床的优势 2
1.2.1 数控车床的特点 2
1.2.2 数控车床的组成 3
1.2.3 数控车床的加工对象 4
1.3 国内外数控车床的发展现状及发展趋势 4
1.3.1 国内数控车床的发展现状 4
1.3.2国外数控车床的发展情况及未来发展趋势 6
1.3.3国内数控车床发展趋势 7
2 数控车床主传动系统总体设计方案 8
2.1 原始条件及数据： 8
2.2 数控车床电动机的选用 8
2.3 数控车床传动方案的设计 9
2.4 数控车床带传动的设计 11
2.4.1 平型带传动 11
2.4.2 V带传动 12
2.4.3 同步齿形带 13
3 数控车床主要零件的设计 14
3.1 数控车床主轴的设计计算 14
3.2 数控车床带传动的设计计算 15
3.3 数控车床的轴承选用 20
3.4 数控车床键的设计 21
3.5 数控车床螺纹紧固的设计 21
3.6 数控车床主轴轴承的润滑设计 22
3.7 数控车床主轴轴承的密封设计 23
4 数控车床主要零件的校核设计 24
4.1 数控车床主轴刚度的校核设计 24 数控车床主传动系统设计+CAD图纸+文献综述:http://www.751com.cn/jixie/lunwen_3908.html