Based on S/N-ratio experimental design and quadratic regression design technique, the effects of spindle speed, workpiece speed, depth of cut and grain size of wheel on the surface roughness of workpiece during plane grinding were investigated.It is found that the successive impact factors for the surface roughness are grain size, depth of cut, spindle speed and workpiece speed, respectively.An unary

linear regression model about the surface roughness was established and tested by F method. The test results show the significance level of the unary linear regression model is 0.01, which means a good regression effect.

S/N-ratio experimental design, quadratic regression design technology, grinding condition;surface roughness

利用信噪比实验设计法和二次回归设计技术,对平面磨削中砂轮转速、工件速度、径向进给量及砂轮粒度等因素对表面粗糙度的影响规律进行了分析，各因素对表面粗糙度的影响由大到小依次为砂轮粒度、径向进给量、砂轮转速和工件速度。同时建立起表面粗糙度的回归预测模型，并以F检验法对其进行检验,回归预测模型的显著性水平为0.01，回归效果良好。

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信噪比实验设计法, 二次回归设计技术, 磨削加工条件, 表面粗糙度