电磁离合器变速式数控车床主传动系统设计设计说明.doc

ＸＸ大学 毕业设计 题 目 主传动系统设计 学 院 专 业 班 级 学 生 学 号 指导教师 二〇一五 年 月日，高精度自动化车床需求量增多高转速自动变速主轴等特点在机床行业，数控车床成为重要生产力量。 介绍了数控机床发展的过程与现状选题目的与意义,并分析了存在的问题对数控机床发展趋势进行了探讨CK6140数控车床主轴箱传动系统进行了分析、 主轴箱是由安装在精密轴承中的空心主轴和一系列变速齿轮组成。在调速范围内，数控车床主轴可以获得的任意速度，以满足加工切削要求。 目前，数控车床的发展趋势是通过电气与机械装置实现无级变速。变频电机通过带传动和变速齿轮为主轴提供动力，主轴箱内 本设计将带轮不卸荷结构变为了带轮卸荷结构，使输入轴在带轮处只受转矩，将轴上的径向力传动到车床箱体上,改善了输入轴的受力情况。 关键词：主轴箱；无级调速；传动系统  ABSTRACT At present, with the development of the social productive forces, the progress of machine technology, high-precision, highly automated CNC lathes significant increase in demand, and CNC lathe also has high power, high speed, automatic transmission, a wide range of spindle speed and other characteristics, so machine tool industry, CNC lathe become an important power production. This paper introduces the present situation of CNC machine tools and process development as well as the purpose and significance of the topic, and analyzes some problems of its existence; CNC machine tool development trends were discussed briefly; And CK6140 CNC lathe headstock transmission analyzes, design and calculation. Headstock is componented by precision bearings in the hollow shaft and a series of transmission gear. In the speed range, any speed Spindle available to meet working cutting requirements. At present, the development trend is to provide a continuously variable speed through the electrical or mechanical devices. Variable Frequency Motor conveys the power through belt drive and a set of transmission gears. Spindle speed gear box series to the extended range of the gear . In this design the design of the belt drive has been changed from the original unloading structure into the loading structure, the input shaft of the pulley only by torque, radial force to the drive shaft on the lathe cabinet, improve the force of the input shaft situatio