A predictive model on surface roughness during internal traverse grinding of small holes

摘要: The surface roughness of nozzles has important influence on the quality fuel atomization. diameter in aero engine is generally less than 1 mm. Because smaller grinding wheel used, its stiffness poor and thus tends to deflect under force. deflection great actual feed, which ultimately affects roughness. Therefore, a predictive model during internal traverse (ITG) needed. Such was established this paper, tool interference grooves were taken into consideration. In addition, relationship between various input variables, namely, rotating speed, oscillation radial feed time, spark-out established. Then several groups experiments with different variables carried out calibrate validate model, demonstrated that ITG small-hole good accuracy, provides guidance for optimization processing parameters.