摘要
贵阳某机床厂生产的某新型轧辊磨床样机采用顶磨方式磨削轧辊。由于磨削系统强度不够,受磨削力和自身重力综合作用,轧辊磨削时挠度不为零,影响到磨削工作状态,加工出的轧辊辊面上出现细微振动纹、色差,表面质量差。故基于磨床双时延模型,通过重新计算砂轮和轧辊的磨削用量,建立了该工况下磨削系统的振动模型和振动方程组,并在此基础上分析了进给量和磨削力与轧辊自身重力夹角两者变化对系统振动的影响。仿真结果表明,进给量增大或夹角减小,系统振动幅值都将增大,且较小范围内进给量较夹角对系统振动影响明显。
A roll grinder is used for grinding roll in top- mill way. Due to insufficient strength of the grinding system,the deflection of roll is not equal to zero in grinding process. So based on the double time delay model,a vibration model and vibration equations are proposed by recalculating the grinding parameters of the roll and grinding wheel under this working condition. The influence of feed rate and the angle between the grinding force and gravity on vibration of the system is analyzed. According to the simulation results,it is showed that both the increase of feed rate and decrease of angle lead to the increase of vibratory amplitude in the system,and feed rate has more obvious impact on vibration than angel in a smaller range.
出处
《现代机械》
2016年第1期5-9,共5页
Modern Machinery
基金
贵州省机床人机工程专业学位研究生工作站(黔教研合JYSZ字[2014]004)
关键词
轧辊磨床
挠度
振动模型
振动方程
振动特性
roll grinder
deflection
vibration model
vibration equation
vibration characteristics
