基于电液控制的皮带轮旋压机床主轴位置精度的仿真与优化  

The Simulation and Optimization on Spindle Position Accuracy of Belt-pulley Spinning Machine Based on Electro-hydraulic Control

作　　者：夏琴香[1] 李小龙[1] 周思聪[1] 林业海 黄新文 

机构地区：[1]华南理工大学机械与汽车工程学院,广东广州510640 [2]中山中炬精工机械有限公司,广东中山528400

出　　处：《机床与液压》2008年第12期158-161,165,共5页Machine Tool & Hydraulics

基　　金：2006年广东省教育部产学研合作项目(编号：2006D90304021)

摘　　要：为达到由电液比例阀控缸位置伺服系统带动的上主轴沿轴向对毛坯的压制与伺服电机滚珠丝杆驱动的旋轮沿径向对毛坯的成形同步进行的目的,利用AMESim软件对皮带轮旋压机床的电液比例阀控缸位置伺服系统进行了建模和仿真,就其中的系统信号响应能力进行了分析,提出了相应的改进方案,并对该方案中的各个参数进行了组合优化。结果表明,对由变量泵、光栅尺、液压缸、电液比例方向阀组成的电液比例阀控缸位置伺服系统而言,通过引入速度环节,并进行参数优化,可使得由液压缸驱动的上主轴位置精度达到±0.1mm以上,能很好地满足多楔带轮旋压成形时楔部增厚的需要;使用AMESim软件中的参数优化功能,可以减少系统参数调试的时间,所得到的最优参数能极大地提高上主轴的位置精度。The electro-hydraulic proportional control system of the belt-pulley spinning machine was modeled and simulated by means of the software AMESim, in order to guarantee the simultaneous movement of the pressing along the axial direction of the upper spindle which driven by the electro-hydraulic proportional control system on the blank, and the forming along the radial direction of the spinning roller which driven by the servo ball screw system. The response of the system signal was analyzed. The corresponding improvement measures were put forward, and the parameter optimization was obtained. The results show that for the electroydraulic proportional control system consisting of variable volume piston pump, grating sensor, cylinder and electro-hydraulic proportional directional valve, the position accuracy of upper spindle which driven by the hydraulic cylinder is as high as ＋ 0. lmm by introducing velocity link and parameter optimization. So the thickening requirement of the wedge-side can be met during the multi-wedge beh-pully spinning. The adjusting time of the system parameters is shortened by means of the optimization function in AMESim, and the position accuracy of upper spindle is improved greatly by using the obtained optimized parameters.

关 键 词：带轮旋压 电液位置控制 AMESIM 仿真 优化 

分 类 号：TH137[机械工程—机械制造及自动化]