摘要:本次设计通过对现有加工中心的分析研究,提出一种新的设计方案,其自动化程度更高,结构也相对比较简单.这一点在论文会得以体现.本方案中,主轴箱采用交流调速电机实现无级变速,在X、Y、Z三个方向上的进给运动均采用滚珠丝杠,而动力则由步进电动机通过调隙齿轮来传递,并且采用单片机进行数字控制.
控制系统采用MCS-51系列单片机,通过扩展程序存储器、数据存储器和I/O接口实现硬件电路的设计.论文中也对软件系统的设计做出了相关说明.
关键词:交流调速电机 滚珠丝杠 步进电机 单片机系统扩展
Abstract: This design tries a new method after the analyze and research of the exited machining center with the higher automatization degrees and the simpler configuration,which will be explained in the paper. In the method, AC adjustable-speed motor is used for the realization of the level shift in variable speed,and in the motion of, we all adopt ball bearing thread haulm for the X、Y、Z direction,The power of which is step by step electromotor transferred by gear that used for adjusting gaps.And more,we used singlechip for numerical control.
The control system introduces MCS-51 series singlechip,and the realization of hardware circuit was accomplished by enlarging program memorizer、data memorizer and I/O meet meatus.Also,the paper explained the design for software system.
Keywords: AC adjustable-speed motor、ball bearing thread haulm、the step by step electromotor、the enlarge for SCM system
目录
前言······················································1
1、机床总体方案设计·······································1
1.1 机床总体尺寸参数的选定·····························1
1.2 机床主要部件及运动方式的选定·······················2
1.3 机床总体布局的确定·································3
2、主传动的设计计算·······································8
2.1 电机的选择·········································8
2.2 齿轮传动的设计计算·································9
2.3 轴的设计计算······································13
2.4 离合器的选用······································21
3、进给系统的设计计算···································22
3.1 概述··············································22
3.2 设计计算··········································22
3.3 工作台部件的装配图设计····························29
3.4 滚珠丝杠螺母副的承载能力的校验····················30
3.5 计算机械传动系统的刚度····························31
3.6 驱动电动机的选型与计算····························33
3.7 机械传动系统的动态分析····························36
3.8 机械传动系统的误差计算与分析·····················37
3.9 确定滚珠丝杠螺母副的精度等级和规格型号············38
3.10 滚珠丝杆副的预紧方式·····························38
3.11 齿轮传动消隙····································39
4、控制系统的设计········································39
4.1 控制系统总体方案的拟订····························39
4.2 总控制系统硬件电路设计····························39
参考文献·················································56
谢 辞················································57
科技译文·················································58
