【摘要】 结合电火花线切割机床改进了具有跟踪电极的工程陶瓷回转表面放电磨削装置,利用该装置加工后的表面粗糙度受到3个主要因素的影响:峰值电流、脉冲宽度和脉间比。根据每种因素的不同水平,设计了16组正交试验,利用二次多项式响应面方法建立了3个因素与粗糙度之间的关系模型,即粗糙度预测模型。基于实际试验,将参数估计值和各因素的水平值代入模型,得到粗糙度预测值,进而将其与粗糙度测量值进行了对比。结果表明,所建立的粗糙度预测模型拟合效果良好,有助于工艺参数的选择与加工质量的控制。更多还原

【Abstract】 For wire electrical discharge machine(WEDM),we update the rotating-surface-grinding device for engineering ceramics grinding.The grinded surface roughness of the ceramics is influenced mainly by the following parameters:peak-current,pulse width and inter-pulse ratio.Based on the parameters,16 orthogonal experiments are designed and a roughness model presenting therelationship between the parameters and roughness is built with two-degree Response Surface Methodology(RSM).In experiments,both the estimated and real parameters are input to the model to calculate the roughness.The results show than the model is with good fitting performance.更多还原