摘要
针对双铣头数控螺杆铣床刀具系统在加工过程中存在刀杆尾端振动量过大、铣刀磨损严重、螺杆径向加工尺寸精度不高的问题,对刀具的刀杆结构进行了改进,增加了对心套.基于PROE软件,建立原刀杆的三维模型,并将该模型导入WORKBENCH中进行有限元结构仿真,在对心套和刀杆之间分别添加间隙量1.0 mm、0.5 mm、0.1mm.仿真结果表明:刀杆在没有添加对心套时,其尾端的变形量高达3.3 mm,铣刀的振动变形量为0.36 mm;添加对心套且采用合理间隙量0.1mm后,刀杆尾端的变形量降为0.16 mm,铣刀的振动变形量约为0.01mm.说明添加对心套对结构改进是合理和必要的.
In view of the too large toolbar end vibration, too much cutter wear and the lack of accuracy in the radial dimension of the screw, the tool cutter bar structure is improved with an additional shaft sleeve. Based on the PROE software, a 3D model of the original tool bar is established and is put in the WORKBENCH for a finite element simulation and additional amounts of 1,0ram, 0.Smm, 0.1mm are added to the gap between the shaft sleeve and the milling cutter bar respectively. The simulation results show： the milling cutter bar without a shaft sleeve has a deformation of 3.3 mm at shaft end, and cutter vibration deformation is 0.36 ram; with a shaft sleeve and an addition of 0.1 mm clearance, the deformation of the cutter end decreases to 0.16 mm and the vibration of milling cutter bar is reduced to about 0.01 mm. The results suggest that the addition of a shaft sleeve is reasonable and necessary to improving the toolbar structure.
出处
《五邑大学学报（自然科学版）》
CAS
2016年第1期41-45,共5页
Journal of Wuyi University(Natural Science Edition)
基金
广东省产学研项目资助(2013B090600123)
关键词
数控螺杆铣床
铣刀刀杆
有限元
对心套
CNC screw milling machines
milling cutter bars
finite elements
shaft sleeves
