Burr formation simulation of end face grinding core of servo valve based on DEFORM^3D

In order to investigate the effect of abrasive grain arrangement on the grinding burr formation, the end face grinding process of the servo valve core was simplified to design a grinding simulation with a single abrasive grain. The grinding process, in which the abrasive grains were arranged in the forms of leaf, dislocation or random, was modeled and simulated utilizing the commercial software DEFORM^3D. The side burrs under the three different abrasive grain arrangements were analyzed and the burr heights were also compared. The results show that under the leaf arrangement, there are relatively stable burrs at the contact edge between the two abrasive grains; the tracks of the two abrasive grains coincide basically and burrs are formed on both sides of the workpiece surface of plough under the dislocation arrangement; under the random arrangement, the track of the two abrasives overlaps and the extrusion characteristics of the material at the contact edge of the two abrasives are more remarkable, thus easily forming secondary burrs. The burr height can be controlled effectively when utilizing the grinding wheel with leaf arrangement.