An investigation on grinding mechanism of alumina ceramic using a grooved grinding wheel with inclined cross section

摘要

In this study, a type of the grooved grinding wheel with inclined cross section is designed based on trapezoidal beam. The grinding type of grooved grinding wheel with inclined cross section is used as a new structuring method to process alumina ceramic. The inclined cross-section groove of a grinding wheel can improve the wear-resistant properties of laser macro-structured grinding wheel. First, a pulse laser was used to ablate rectangular cross-section groove and inclined cross-section groove on two bronze-bonded diamond wheels. Second, a grinding test was performed by using the grooved grinding wheel with rectangular cross-section and grooved grinding wheel with inclined cross section. The experimental results showed that the grooved grinding wheel with inclined cross section presented a reduction of grinding forces between 18 and 31.7%, but the better surface was not obtained. In addition, the inclined cross-section groove could reduce stress concentration, thus improving the wear of the grinding wheel surface. This indicates that the grooved grinding wheel with inclined cross section has better grinding performance than the grooved grinding wheel with rectangular cross section owing to the inclined cross-section structures. This provides further evidence for a method of constructing grooved grinding wheel with inclined cross section based on trapezoidal beam design.