Grinding Zone Flow Field Analysis And Effective Grinding Fluid Calculation Based On CFD

Grinding technology is an important area in the advanced manufacturing technology, and the most effective and most widely used in modern manufacturing technology. The data indicate that, grinding accounted for about30%of the total machining. The workpiece surface will produce a lot of heat in the grinding process, in order to suppress the temperature rise of the workpiece and ensure the quality of the workpiece, there must be an adequate supply of grinding fluid to the grinding zone, playing a role in cooling and lubricating the workpiece. However, the high-speed rotation of the wheel will lead to its peripheral part of the air along with the circular motion, take shape an air layer, and handicap the effective access of the grinding fluid. In the actual grinding process, despite the injection of a large number of grinding fluid, but the grinding fluid which truly enter into the grinding arc is very little. Most of the grinding fluid only played the role of peripheral cooling. This reduces the grinding fluid’s efficiency and grinding process’s green level, caused an increase of the cost. Therefore, research of the nature of the grinding airflow field and the interaction with grinding fluid, has a very important practical significance to improve the effective use of grinding fluid and the green level of the grinding process.In this paper, the object of study is the grinding airflow field and the gas-liquid two-phase flow on the common surface grinder, theoretical fluid dynamics and computational fluid dynamics as the theoretical basis of numerical simulation methods, using general fluid analysis software FLUENT. The model of grinding airflow field and the gas-liquid two-phase flow are established. Analysis the characteristics of the grinding airflow field under different conditions and the influence of different grinding parameters on the flow field, studied the trajectory of the grinding fluid under different nozzle position, described the normal distribution of the grinding area of grinding fluid, calculated the size of the effective grinding fluid in different fluid parameters, analysis the factors which affecting the ratio of effective grinding fluid, and proposed a number of ways to increase the effective use of grinding fluid. Through the grinding experiment, to study the fluid parameters on the integrity of the specimen surface mechanism, and analysis of the specimen surface integrity index, give simulation results an experimental verification.