二十辊轧机轧辊磨床砂轮动不平衡对磨削颤振的影响

• 作 者: 王利明 袁意林 邵毅敏 王盛军
• 机 构: 重庆大学机械传动国家重点实验室,宁波宝新不锈钢有限公司,
• 出 处: 工程科学学报
• 发表日期: 2015年S1期
• 关键词: 轧辊磨床 动不平衡 振动特性 轧辊表面 磨削过程 二十辊轧机 磨削质量 振动响应 生产效率 输入激励

轧辊磨床磨削过程中轧辊表面经常产生振痕等表面质量缺陷,严重制约生产效率和磨削质量.本文基于磨床双时延动力学模型,以砂轮动不平衡为输入激励,建立了轧辊磨床砂轮动不平衡模型,运用龙格-库塔法进行求解,获得了砂轮动不平衡时磨削系统的动力学特性.通过对正常工况与不同砂轮动不平衡量工况的仿真,获得了其振动响应,并与试验数据进行对比,验证了轧辊磨床砂轮动不平衡模型的正确性和有效性.

Roll surface grinding roll grinding process often produce surface defects such as vibration marks, which seriously restrict the production efficiency and grinding quality.Based on the dual-delay dynamic model of the grinding machine, the wheel imbalance as the input excitation, the establishment of a roll grinding wheel Dynamic unbalanced model was solved by Runge-Kutta method and the dynamic characteristics of the grinding system during the dynamic unbalance of the grinding wheel were obtained.Through the simulation of the working conditions and the dynamic unbalance of the grinding wheel, Response, and compared with the experimental data to verify the correctness and effectiveness of the roll grinder dynamic imbalance model.