Modeling And Experimental Research On Machining Speed In Ceramics Gringding

Engineering ceramics material owns some excellent properties, such as high hardness and strength, high corrosion-resistance, wear-resistant, thermostable ability and excellent chemical stability etc, so it is applied widespread in electron, machinery, metallurgy, aerospace, military, chemistry and precise manufacture field. Grinding plays an important role in engineering ceramics machining comparing with other methods. However, as ceramics material owns high hardness and brittleness, they are difficult to machine. It easily leads to surface flaw and the machining speed is low, so the cost of machining is very high.In this paper, lots of related literatures were researched. According to the theory of elastic indentation and analysising the force which imposed on engineering ceramics in grinding process, the theoretical model of machining speed was presented based on the assumptions. The assumptions as follows: Grinding grain is rigid ball and the size is same; grinding grain uniformly distributed in the wheel; the material is removed in one time; there is no softened phenomenon in the process of ceramics grinding.In order to researching the interaction between various parameters and the influence of parameters on machining speed, lots of experiments were made in this paper. The parameters include grinding grain, grinding force, wheel rotation speed and the depth of cut etc. The results of experiments show that the theoretical model agrees with the actual machining process. So the theoretical model is practical and effective and it can provides a theoretical basis for the choice of the reasonable parameters in ceramics grinding process. In the same time, the results of experiments illustrate that the ideal assumptions are reasonable too.