Theoretical modeling and experimental study on grinding force of straight groove structured grinding wheel

Abstract

Structured grinding wheel has obvious advantages in reducing grinding force, and the structural parameters of grinding wheel have important in uence on the reduction effect of grinding force. In order to determine the in uence law of structural parameters on grinding force, the following theoretical modeling and experimental research work are carried out in this paper. Firstly, single grit scratching experiments of the workpiece material are carried out to determine the critical cutting depth for ploughing and cutting transition. The in uences of structural parameters on the maximum undeformed chip thickness and the average contact arc length during grinding are analyzed in detail. The abrasive grains are simpli ed into a cone with a cone apex angle of 120 degrees, the surface topography model of the structured grinding wheel is established according to the measured results of the distribution law of abrasive grains on the surface of the grinding wheel and the structural characteristic parameters.Combined with the grinding force model of single abrasive grain in ploughing and cutting stages, the calculation model of grinding force in the grinding process of straight groove structured grinding wheel is established. Finally, grinding experiments are carried out to verify the accuracy of the theoretical grinding force model. The results show that the calculated values of grinding force are in good agreement with the experimental values, and the maximum calculation errors of tangential grinding force and normal grinding force are 14.5% and 11.8%, respectively. It is found that when the intermittent ratio of structured grinding wheel is constant, the groove width has little in uence on grinding force. However, when the groove width is constant, the intermittent ratio has a great in uence on the grinding force, and with the increase of the intermittent ratio, the grinding force decreases obviously. grinding force, but the increase of intermittent ratio will also aggravate the wear of grinding wheel. How to reasonably design the structural parameters of grinding wheel needs further research. DeclarationsAuthor contribution Yi Jun: conceptualization, methodology, supervision and manuscript revision. Yi Tao: investigation, experimentation and data collection, data curation and writing the original draft. Chen Bing: resources and funding acquisition. Deng Hui: original draft revision and review. Zhou Wei: writing review and editing.

Research on Grinding Force Prediction of Flexible Abrasive Disc Grinding Process of TC17 Titanium Alloy

“…Tao et al [16] studied the movement trajectory and grinding contact conditions of abrasive grains, and proposed a grinding force prediction model combining the effects of abrasive grain wear, abrasive grain randomness, brittle-ductile transition, elastic rebound, strain rate, and other factors. Yi et al [17] combined with the grinding force model of a single abrasive grain in the ploughing and cutting stages to establish a grinding force calculation model for the straight groove structure grinding wheel during the grinding process, which was consistent with the experimental results. Additionally, Jamshidi et al [18][19][20] studied the grit-workpiece micro-interaction and geometry of the grinding wheel.…”