Journal: Volume 21, No. 4, 2016
Pages: 80 – 87
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Investigation of the method for grinding of the rolls of rolling mills with crossed axes of the tool and workpiece

Vitalii Kalchenko, Volodymyr Kalchenko, Andriy Yeroshenko, Natalia Sira

Abstract

The quality of the rolls of rolling mills depends on the quality of products. Worn roll surfaces are reduced by grinding to different size diameters with the purpose to provide high quality and accuracy of their surfaces. The purpose of the work is to ensure high levels of accuracy and quality of machined surfaces of the rolls of rolling mills and to increase grinding performance by utilizing a method with crossed axes of grinding wheel and part. Grinding of the rolls of rolling mill to the required size is carried out in three passes by abrasive and diamond wheels with crossed axes of the tool and workpiece. During the first pass the roughing of the roll by abrasive wheel is done, during the second pass – finishing work by two combined abrasive wheels, during the third pass – the calibration of workpiece surface by diamond wheel. The influence of thermal phenomena and the rigidity of AIDS system on the accuracy and quality of machined surfaces are investigated and the value of the tool wear is calculated. The recovery of cutting wheels properties is provided by their dressing which is performed separately on the face and on the periphery of the tool. As a result, a high-performance method for grinding of the rolls of rolling mills with crossed axes of the workpiece and the tool and dressing (which is performed separately on rough (the end) and finishing (the periphery) areas), which provide improved accuracy and quality of surface, are offered. The method can be used for deep grinding of cylindrical, stepped and curved surfaces of revolution with crossed axes of the wheel and parts

Keywords

rolls, rolling mills, grinding, crossed axes, grinding wheel, diamond grinding wheel, wheel dressing, shear stress, rigidity, wear and tear

References

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Suggested citation

Kalchenko, V., Kalchenko, V., Yeroshenko, A., & Sira, N. (2016). Investigation of the method for grinding of the rolls of rolling mills with crossed axes of the tool and workpiece. Bulletin of Cherkasy State Technological University, 21(4), 80-87.