中国机械工程
中國機械工程
중국궤계공정
CHINA MECHANICAl ENGINEERING
2012年
6期
666-671
,共6页
外圆磨削%仿真%Johnson变换%Gabor小波变换%粗糙度
外圓磨削%倣真%Johnson變換%Gabor小波變換%粗糙度
외원마삭%방진%Johnson변환%Gabor소파변환%조조도
cylindrical grinding%simulation%roughness%Johnson transformation%Gabor wavelet transformation%roughness
对磨削砂轮形貌、外圆磨削过程及工件表面形貌进行了仿真,实现了对工件表面粗糙度的预测,并对仿真模型进行了验证。采用Johnson变换和Gabor小波变换,实现了高斯域和非高斯域的转化,在随机域内对磨削砂轮形貌进行了仿真。根据外圆磨削运动过程,通过对砂轮和工件相互作用过程的分析,建立了磨粒运动轨迹方程和工件形貌方程,在考虑磨粒切削、耕犁与摩擦作用的条件下,对外圆磨削过程进行了仿真。建立了外圆磨削模型,实现了对加工工件形貌的仿真和粗糙度预测。
對磨削砂輪形貌、外圓磨削過程及工件錶麵形貌進行瞭倣真,實現瞭對工件錶麵粗糙度的預測,併對倣真模型進行瞭驗證。採用Johnson變換和Gabor小波變換,實現瞭高斯域和非高斯域的轉化,在隨機域內對磨削砂輪形貌進行瞭倣真。根據外圓磨削運動過程,通過對砂輪和工件相互作用過程的分析,建立瞭磨粒運動軌跡方程和工件形貌方程,在攷慮磨粒切削、耕犛與摩抆作用的條件下,對外圓磨削過程進行瞭倣真。建立瞭外圓磨削模型,實現瞭對加工工件形貌的倣真和粗糙度預測。
대마삭사륜형모、외원마삭과정급공건표면형모진행료방진,실현료대공건표면조조도적예측,병대방진모형진행료험증。채용Johnson변환화Gabor소파변환,실현료고사역화비고사역적전화,재수궤역내대마삭사륜형모진행료방진。근거외원마삭운동과정,통과대사륜화공건상호작용과정적분석,건립료마립운동궤적방정화공건형모방정,재고필마립절삭、경리여마찰작용적조건하,대외원마삭과정진행료방진。건립료외원마삭모형,실현료대가공공건형모적방진화조조도예측。
This paper provided a simulation and modeling method of wheel topography, cylindrical grinding process and workpiece topography,and forecasting of grinding roughness, the model was calibrated and validated based on experimental data. With both Johnson transformation method and Gabor wavelet transformation method,the inter--transformation of Gaussian field and non--Gaussian field were presented,then,the simulation of wheel topography at a random field was realized. Based on the analyses of cylindrical grinding kinematics and interaction of wheel and workpiece, the grain motion trajectory equation and workpiece topography simulation equation were gained. Considering the cut- ting,ploughing and rubbing action of grains, and the cylindrical grinding progress and workpiece to- pography were simulated, the cylindrical grinding model was established, and the workpieee surface roughness was predicted.
