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：The research of the grinding process modeling and simulation is presented. The development progress and its tendency of three types of modeling methods and simulation are described results, which are based on empirical analysis, theoretical analysis and finite element technology. The method of modeling and simulating results are discussed respectively in detail. Meanwhile the limitations of application of models are analyzed. It is indicated that the empirical models are based on finite data of experiments, which have low level of prediction abilities, the theoretical models which are set up on ideal assumption is complexity, and the finite element models are restricted to analyze the process of single-grit grinding due to technical problem, on that account, the methods of grinding process modeling and simulation research based on the regular abrasive distribution grinding wheel are introduced. Furthermore, their present situation prospect and significance for prediction, optimization and control of high speed and high efficiency grinding are elaborated.

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Purpose This paper aims to evaluate the influence of molybdenum disulfide (MoS2) concentrations (5, 7.5, 10, 12.5 and 15 Wt.%) on the microstructure and tribological property of the self-lubrication cubic boron nitride (CBN) abrasive composites. Design/methodology/approach Three point bending method and rotating sliding test are used to evaluate the flexural strength and tribological property of self-lubricating CBN abrasive composites. Microstructure, wear morphology of the ball and scratch are supported by scanning electron microscopy, optical microscope and three-dimensional confocal microscopy, etc. Findings The MoS2 concentration has a significant influence on the interface microstructure between CBN abrasives and matrix alloys, and thus, affects the flexural strength of CBN abrasive composites. The grain fracture modes of CBN abrasive composites are transformed from the transgranular fracture into intergranular fracture as the MoS2 concentrations increase. Additionally, the friction coefficient of as-sintered samples decreases with the MoS2 concentrations. The MoS2 concentrations of 10 Wt.% are final determined to fabricate self-lubricating composites in basis of the mechanical and lubricating property. Originality/value The ball is fabricated under vacuum sintering process. The tribological property of self-lubricating CBN abrasive composites is evaluated in terms of the friction coefficient and morphologies of the ball and scratches after rotating sliding tests.