切入式外圆磨削接触刚度测量与磨削参数优化  

CONTACT STIFFNESS MEASUREMENT AND GRINDING PARAMETERS OPTIMIZATION OF CYLINDRICAL PLUNGE GRINDING

作　　者：王家乐 李郝林[1] 孙士玉 汪能洋 曹文洁 崔怡[1] WANG JiaLe;LI HaoLin;SUN ShiYu;WANG NengYang;CAO WenJie;CUI Yi(School of Mechanical Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China)

机构地区：[1]上海理工大学机械工程学院,上海200093

出　　处：《机械强度》2023年第3期677-683,共7页Journal of Mechanical Strength

基　　金：上海市科学技术委员会项目(19060502300)资助。

摘　　要：在切入式外圆磨削过程中,砂轮与工件的接触刚度很难直接测量,为了解决这一问题,提出了一种定性确定砂轮与工件接触刚度的简化方法,并对磨削参数进行了优化。基于切入式外圆磨削过程动力学模型,推导了磨削过程的传递函数,建立了时间常数与接触刚度的数学模型,以此提出了一种定性确定磨削接触刚度的简化方法;进一步地,通过控制砂轮进给速度和工件转速进行多次试验,根据试验结果,分析了系统时间常数以及磨削力随磨削参数变化的规律,通过回归分析建立接触刚度与磨削参数的关系模型,并在满足加工要求的情况下确定出特定磨削加工过程的砂轮进给速度、工件转速的最佳值。In the process of plunge cylindrical grinding,it is difficult to directly measure the contact stiffness between the grinding wheel and the workpiece.In order to solve this problem,a simplified method for qualitatively determining the contact stiffness between the grinding wheel and the workpiece is proposed,and the grinding parameters are optimized.Based on the dynamic model of plunge cylindrical grinding process,the transfer function of grinding process is deduced,and the mathematical model of the time constant and contact stiffness is established.A simplified method for qualitative determination of grinding contact stiffness is proposed.Further,multiple tests are conducted by controlling the wheel feed speed and the workpiece speed.According to the experimental results,the variation of the system time constant and the grinding force with the grinding parameters are analyzed.The relationship model between the contact stiffness and the grinding parameters is established by regression analysis,and the optimal values of the wheel feed speed and the workpiece speed in the specific grinding process are determined under the condition of meeting the machining requirements.

关 键 词：外圆切入磨削 接触刚度 磨削参数 时间常数 磨削过程模型 

分 类 号：TG581[金属学及工艺—金属切削加工及机床]