机械类毕业论文 xk160小型数控铣床主传动及z轴传动

1、毕业设计(论文)Xk-160小型数控铣床主传动及z轴传动XK-160 SMALL NC TYPE MILLING MACHINE S MAIN DRIVE SYSTEM AND ZFEED SYSTEM DESIGNMECHANICAL PARTS学生姓名学院名称专业名称指导教师年月日摘要本论文主要研究小型立式数控铣床的传动系统。小型立式数控铣床的传动系统主要包括主传动系统和z向进给系统，本次设计任务是研究主传动系统和进给系统的机械局部，通过市场调研和查阅相关资料，论证了本设计的必要性和可行性。从确定小型数控机床的方案入手，设计主传动系统的装配图和主要零件图、进给传动系统的装配图和主要零件图；

2、确定小型立式铣床总体方案后，详细论述了主传动系统和进给传动系统各组成局部，以及各局部的计算和选用。这次设计采用自上而下的设计方法，从总体结构出发，然后进行各组成局部的设计。在设计中，充分利用标准化、系列化、通用化，如用于连接的各种螺栓、滚珠丝杠等，从而增大了互换性，便于维修工作，而且提高了生产效率，能满足不同用户的需求。本课题开发设计的小型数控铣床体积小、占地面积小、结构紧凑、技术上先进、生产率高产、实用性强。适用于中小批小型零件的加工生产，是小型企业、电子元件生产企业、个体企业较为理想的加工设备，也可用于高中专、技校的机电类专业的数控实习、实验教学。关键字:数控铣床；主传动系统；z轴进给系统

3、；滚珠丝杠；AbstractThis paper researches on the xk-160small NC type milling machine drive system. Xk-160small NC type milling machine comprises mainly transmission main drive system and feed system. This design task is to study the main drive system and zfeed system of mechanical parts. Through market re

4、search and accessing to relevant information, we demonstrated the necessity of this design and feasibility. From the small NC type milling machine starting, I draw a small the main drive system of assembly and major parts map, the transmission system into the main assembly and parts map; identifying

5、 small NC type milling machine overall plan, we discussed in detail the main drive system and feed the various components of the transmission system, as well as part of the calculation and selection.We uses top-down design, from the overall design of the structure and then proceed to the various com

6、ponents of the design. In this design, we make full use of standardized series, universal, such as for connecting the various bolts, ball screw, zfeed , so as to increase the interchangeability and easing of maintenance work, and raising Production efficiency, to meet the needs of different users.Th

7、e subject of the Development and Design Center has processing small in size, covering an area of small, compacting and technically advanced, high yield and productivity, and practical. It is Applicable to small and medium-sized grant more small plane in particular parts of the production of small pa

8、rts processing. It is small enterprises, electronic components manufacturing enterprises, individual enterprises better processing equipment. It can also be used for the Engineering, a technical school for professional training of NC , Experimental teaching.Keyword： Main drive system Spindle feed sy

9、stem Ball Screw1、绪论22233332、数控铣床主传动特点和xk-160小型数控铣床的主传动系统的设计4455662.2.4 传动比确实定和齿轮1、2设计及校核 72.2.5传动比确实定和齿轮3、4设计及校控铣床z轴进给传动的设计和相关计算313.1 z向进给传动系统的组成、特点及要求313.1.1 进给传动系统的组成313.1.2 进给传动系统的特点323.1.3 进给传动系统设计的根本要求323.2 伺服驱动装置的选择323.2.1 伺服驱动装置的要求333.2.2 伺服驱动装置的选择333.3 交流伺服电动机 333.3.1 交流伺服电动机的类型

10、333.4 电动机与滚珠丝杠螺母副的连接方式343.4.1 电机与丝杠连接的方式343.4.2 联轴器选择应考虑的因数343.4.3 联轴器的类型343.5 滚珠丝杠螺母副35353.5.2 滚珠丝杠螺母副的循环方式363.5.3 滚珠丝杠螺母副间隙的消除和预紧方法373.5.4 滚珠丝杠的安装38图34 两端支承403.5.5 滚珠丝杠的制动413.5.6 滚珠丝杠螺母副的密封与润滑413.6 导轨的选用413.6.1 对导轨的要求423.6.2 导轨的类型及选用423.6.3 导轨的润滑及防护443.7 Z向滚珠丝杠的计算及其校核453.7.1 滚动丝杠副的导程计算453.7.2 滚动丝杠副的载荷及转速计算463.7.3 确定预期额定动载荷47493.7.6 确定滚珠丝杠副其它尺寸493.8 z向伺服电机的计算及其校503.8.1 作用在滚珠丝杠上的各种转矩的计算503.8.2 负荷转动惯量(kgm2)及传动系统转动惯量(kg m2)的计算503.8.3 加速转矩和最大加速转矩513.8.4 电机的最大启动转矩计算513.8.5 电机连续工作的最大转矩计算52