钻攻中心Z轴进给系统的优化设计及模态分析
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摘要
分析了目前用于消费电子行业中钻攻中心机床的总体发展趋势、基本结构及相关工艺,提出了一种适用于加工手机外壳的新型钻攻中心Z轴进给系统,该进给系统基本配置为直线电动机搭配光栅尺,并设计了其总体结构。该进给系统的主要特点为响应快,刚性强,加工效率高,具备车铣复合功能。同时进给系统整体结构相对简单,能实时检测系统的温度,减少了由于丝杠热变形对加工精度的影响,有利于该机工作的稳定性。并对主要承载部件——主轴箱进行了模态分析,分析了主轴箱的固有频率,得出了前5阶振型图,从而为后续进一步优化主轴箱结构提供了相关依据。同时提出了该进给系统在实际应用时的几点建议。
Analysis of the current development trend of the drilling and tapping center used in consumer electronics industry,basic structure and related technology,this paper proposes a new Z axis feed system that is suitable for drilling and tapping mobile phone shell. The basic configuration is linear motor feed system with grating ruler,and designed the overall structure. The main features of the feed system are fast response,strong rigidity,high machining efficiency,and turning and milling compound function. At the same time,the overall structure of the feed system is relatively simple,which can detect the temperature of the system in real time and reduce the influence of the thermal deformation on the machining precision,Also it can conducive to the stability of the machine. And explains the main components-spindle box modal analysis,analyzed the natural frequency of the spindle box,it is concluded that the former 5 figure mode,further optimize the structure of spindle box provides related basis. At the same time,some Suggestions for the application of the feed system are put forward.
Analysis of the current development trend of the drilling and tapping center used in consumer electronics industry,basic structure and related technology,this paper proposes a new Z axis feed system that is suitable for drilling and tapping mobile phone shell. The basic configuration is linear motor feed system with grating ruler,and designed the overall structure. The main features of the feed system are fast response,strong rigidity,high machining efficiency,and turning and milling compound function. At the same time,the overall structure of the feed system is relatively simple,which can detect the temperature of the system in real time and reduce the influence of the thermal deformation on the machining precision,Also it can conducive to the stability of the machine. And explains the main components-spindle box modal analysis,analyzed the natural frequency of the spindle box,it is concluded that the former 5 figure mode,further optimize the structure of spindle box provides related basis. At the same time,some Suggestions for the application of the feed system are put forward.
引文
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[11]唐余林铣车复合加工中心双驱进给系统动力学分析与仿真[D].兰州:兰州理工大学,2014.
[2]唐振宇.直线电机进给驱动技术在数控机床上的应用[J].机床与液压,2009,37(3):62-63,70.
[3]夏加宽,刘晓霞.机床进给用直接驱动直线伺服电动机[J].制造技术与机床,2003(4):8-11.
[4]叶云岳.直线电机原理与应用[M].北京:机械工业出版社,2000.
[5]王大为.双驱式高精度数控铣削实验系统研究与设计[D].大连:大连理工大学,2010.
[6]陆君,文怀兴.高速立式加工中心主轴箱模糊有限元优化[J].机床与液压,2011,39(7); 104-105.
[7]Zaghbani I,Songmene V. Estimation of machine-tool dynamic parameters during machining operation through operational modal analysis[J]. International Journal of Machine Tools and Manufacture,2009(12):947-957.
[8]罗生梅,王晓龙.基于ANSYS的数控镗铣床主轴箱模态分析及拓扑优化[J].机械制造,2016(10):37-39.
[9]高东强,杨磊.立式加工中心主轴箱设计及特性研究[J].机械传动,2015(2):63-66.
[10]周新建,朱卫.高速精密数控立式加工中心整机静动态特性分析[J].机床与液压,2012,40(3):28-32.
[11]唐余林铣车复合加工中心双驱进给系统动力学分析与仿真[D].兰州:兰州理工大学,2014.