Modelling and simulation of bore diameter evolution in finish honing

Honing is generally used as finishing technology in manufacturing precise valves. However, the precise control of honed diameter is difficult due to the weak stiffness of honing machine. This paper aims to solve this problem by building analytical model of the evolution of bore diameter during finish honing process. Firstly, comparing with previous research, the advantages of analytical models on diameter evolution were point out. Secondly, an analytical model was built by macroscopic and microscopic analysis on feed-control finish honing process. Bearing ratio was used to quantificationally describe the micromorphology of oilstone and workpiece. And the bearing ratio curve was approximately seen as a straight line in the calculation. Based on this model, a simulation method was proposed to calculate the evolution of bore diameter during honing. Then, a series of honing experiments were carried out to calibrate the coefficients of the model. The calibrated model showed good accuracy in predicting increments of honed diameter.