摘要
为了避免高液静压无心磨床在磨削工件时发生颤振,从而提高工件的加工精度和磨削效率,提出了从再生型颤振机理出发,建立高液静压无心磨床磨削过程再生颤振动力学模型,制取无心磨削稳定性叶瓣图,选取适当加工工艺参数的方法。首先,应用再生颤振理论研究高液静压无心磨床磨削过程,进而建立了考虑工件和砂轮再生颤振的动力学模型,并在磨削力模型中利用时间延时来表示再生效应,通过对动力学模型进行求解,得到高液静压无心磨床磨削过程稳定性叶瓣图,并将稳定性叶瓣图划分为符合切入式无心磨削的4个区域,为工艺人员选取磨削工艺参数避免颤振提供了理论依据。
In order to avoid the high hydrostatic pressure in centerless grinding workpiece occur when flutter,so as to improve the machining precision of workpiece and the grinding efficiency,is proposed based on regenerative chatter vibration mechanism,establish a high hydrostatic pressure centerless grinding process of regeneration chatter vibration mechanics model,making centerless grinding stability lobes diagram,select appropriate process parameters.First of all,the application of regenerative chatter theory research of high hydrostatic pressure centerless grinding process,and then set up considering the workpiece and grinding wheel dynamic model of regenerative chatter,and use of time delay in the grinding force model to represent the regeneration effect,the dynamic model is solved by,with high hydrostatic pressure stability lobes diagram,centerless grinding process and the stability lobes diagram is divided into conforms to cut into the four areas of centerless grinding,grinding process parameters selected for technological personnel to avoid chatter provides a theoretical basis.
作者
徐磊
赵丽梅
余炯
XU Lei;ZHAO Li-mei;YU Jiong(School of Mechanical Engineering,Guizhou University,Guiyang 550025,China)
出处
《组合机床与自动化加工技术》
北大核心
2021年第10期52-55,60,共5页
Modular Machine Tool & Automatic Manufacturing Technique
基金
贵州省科技计划项目(黔科合重大专项字[2019]3016号)
贵州省留学人员科技活动项目择优资助重点项目(黔人项目资助合同(2018)0001号)。
关键词
高液静压无心磨床
再生颤振
磨削力
稳定性叶瓣图
high hydrostatic pressure centerless grinder
regenerative chatter
grinding force
stability lobe pattern
