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平面磨削工件的热变形及加工误差的实用计算方法 总被引：3，自引：0，他引：3
The paper submits a method to calculate thermal deformation and manufacture error in surface grinding.The author established a simplified temperature field model.and derived the thermal deformaiton of the ground workpiece,It is found that there exists not only a upwarp thermal deformation,but also a parallel expansion thermal deformation.A upwarp thermal deformation causes a concave shape error on the profile of the workpiece,and a parallel expansion thermal deformation causes a dimension error in height.The calculations of examples are given and compared with presented experiment data. 相似文献
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A semi-analytical method was proposed to solve the mechanics problem of stamping a sheet on elastic die.The sheet was divided into four parts according to its deformation and contact with the punch and elastic die.Analytical solutions were derived individually for each part by using elastic large deflection and plastic large deformation.Solutions were found out with MATLAB by developing a numerical algorithm.Interface forces were obtained by iteration under the compatibility conditions between the neighboring parts of the sheet.Computation shows the method is efficient. 相似文献
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