摘要
磨削过程中的再生颤振现象是影响工件磨削质量的主要因素之一。基于再生颤振机理,以切入磨再生颤振建模为基础,将外圆纵磨过程简化为多步以磨削接触区为磨削宽度的小切入磨的叠加,建立了工件、砂轮小宽度切入磨动力学模型并对其稳定性进行了研究。在此基础上,探讨了符合外圆纵磨特点的稳定性分析及评价方法,分析了工件主轴转速,砂轮主轴转速,磨削深度和轴向进给速度对稳定性的影响,为外圆磨削颤振抑制提供依据。磨削试验结果与理论分析一致,验证了外圆纵磨再生颤振模型及稳定性理论的正确性。
Regenerative chatter is an unfavorable dynamic phenomenon influencing surface precision of workpieces in grinding operation.The traverse grinding can be assumed as the sum of several stepwise plunging grindings with respect to the grindings contact area.The dynamic model of workpiece and grinding wheel stepwise plunging grinding was set up in the form of closed loops.Based on the regenerative chatter model and its stability analysis,the stability theory and stability chart of traverse grinding were developed to evaluate the effect of workpiece speed,grinding wheel speed,grinding depth and traverse speed.Traverse grinding experiments were carried out to testify the theoretical results.Both results are in qualitatively good agreement.
出处
《振动与冲击》
EI
CSCD
北大核心
2008年第12期61-63,78,共4页
Journal of Vibration and Shock
基金
国家863项目(2006AA04Z146)
(2007AA042005)
高等学校博士学科点专项科研基金(20060056016)
天津市科技支撑计划重点项目(08ZCKFGX00900)
天津市科技计划项目(08ZCKGX02300)
禹州市钧瓷研究所项目(G208591)
关键词
外圆纵磨
再生颤振
稳定性
cylindrical traverse grinding
regenerative chatter
stability
