Study on the Grinding Surface and Subsurface Quality of Novel Point Grinding Wheels

doi:10.12068/j.issn.1005-3026.2019.06.014

Abstract

Abstract: Different from the traditional cylindrical grinding， the axis of a grinding wheel is not parallel to the workpiece axis in the point grinding process， but rotates at an inclining angle α. A novel grinding wheel with angle θ is proposed， which is featured by high grinding rate and small surface roughness. Because of α and θ， the contact between the grinding wheel and workpiece has been changed， and the surface/subsurface quality is also changed. The novel wheels with different angles θ are used to grind QT700 workpieces. Then， the metallographic structure， work hardening and residual stress of the workpiece surface/subsurface are tested. The influence of α， θ and grinding parameters on the surface/subsurface quality is analyzed， and the process parameters for optimal surface/subsurface quality are obtained. In conclusion， the novel point grinding wheel can improve the surface/subsurface quality of workpieces.

Key words: novel point grinding wheel(NPGW), metallographic structure, work hardening, residual stress

CLC Number:

TH161

YIN Guo-qiang， GONG Ya-dong， LI Yu-qing， SONG Jun-li. Study on the Grinding Surface and Subsurface Quality of Novel Point Grinding Wheels[J]. Journal of Northeastern University Natural Science, 2019, 40(6): 835-840.

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