1、 摘要 数控车床的主传动系统设计及其三维建模，用于数控车床的优化，在机床工 业中起到显著作用。 实现机床主轴与交流变频电机的恒功率匹配，以满足机床加工的需要，通过 实际情况对车床部分参数拟定，根据机床类型，规格及其他特点，了解典型工艺 的切削用量， 结合世界条件和情况， 与同类机床对比分析确定： 极限转速， 公比， 级数，主传动电机功率。从而完成车床主传动系统的设计，设计皮带轮和各传动 轴、轴承，并且进行轴的刚度强速校核，根据拟定的参数通过结构网和转速图的 分析，确定转动结构方案和转动系统图，计算各转动副的传动比及齿轮的齿数， 并验算主轴的转速误差。用 UG NX8.0 软件给传动系统三维建模
2、。 关键词：数控车床 主传动系统设计 传动方式 建模 Abstract Design of main drive system for numerical control lathe and its 3D modeling The optimization of numerical control lathe plays a significant role in machine tool industry Realization of machine tool spindle and the AC frequency conversion motor constant power match
3、ing, to meet the needs of machining, through the actual situation of lathe part parameters worked out, According to the type of machine, specifications and other characteristics, understand the typical process of cutting, according to the terms and conditions, compared with the similar machine analy
4、sis: the speed limit, the ratio and the series, the main drive motor power is determined， thus completing the design of the lathe main transmission system, design the belt pulley and the transmission shaft, bearing and shaft rigidity of speed check, According to the proposed parameters through the analysis of the structure of network and the speed chart, determine the rotational structure scheme and rotation system diagram calculated rotation of the side transmission gear ratio and the number
