学术论文

      磁流变阻尼器对单、双平面砂轮振动控制对比实验

      Contrast experiments between single and double plane balancing to control grinding wheel vibration by magneto-rheological dampers

      摘要:
      磨削过程中,砂轮的振动是产生工件加工表面振纹、影响加工质量的重要因素.针对砂轮不平衡引起的主轴振动,搭建砂轮振动控制实验台,模拟磨床工作状态.在砂轮主轴上安装磁流变阻尼器,实验研究阻尼器分别应用单平面和双平面振动控制技术控制砂轮振动的影响规律.结果表明:利用单平面振动控制方法,砂轮主轴振动峰峰值及转频的振动幅值较原始振动下降明显,降幅达80%;双平面振动控制方法效果更佳,较原始振动降幅达90%.两种方法均能有效抑制砂轮主轴振动,使砂轮振动保持在较低水平.
      Abstract:
      In the process of grinding machine,the vibration of grinding wheel is an important factor of generating surface mark and impairing the processing quality.In order to solve the spindle vibration caused by unbalanced mass of the grinding wheel,a grinding wheel vibration control bench is established to simulate the operating condition of the grinding machine.A magnetorheological damper is mounted at the spindle.Contrast experiments between the single plane and the double plane balancing are carried out on the test rig.The results show that the peak to-peak value and the amplitude of the rotational frequency are de creased by applying of single plane balancing.The decline of amplitude is about 80 %.The double plane balancing of controlling the vibration is more effective and the decline can be up to 90%.The two methods can both effectively reduce the spindle vibration and keep the vibration of the grinding wheel at a lower level.
      作者: 胡航领 何立东
      Author: HU Hang-ling HE Li-dong
      作者单位: 北京化工大学机电工程学院,北京,100029
      刊 名: 振动工程学报 ISTICEIPKU
      年,卷(期): 2017, 30(1)
      分类号: TB535 TH703.62 TB381
      在线出版日期: 2017年4月14日
      基金项目: 国家重点基础研究发展计划(973计划)