In order to study the rough peak removing from the surface of the workpiece and the abrasive dropping off from the abrasives coating layer of the lapping film during the lapping process, the lapping process of the lapping film and wprkpiece were modeled and simulated utilizing discrete element method based on PFC3D, the variations of the unbalance force on the contact point and the process of element dropping were analyzed. Meanwhile, the influences of the bond strength of the binder and the abrasive-binder ratio on the lapping process were studied. The results showed that when the bond strength of the binder was high, the blunt abrasive could not drop off, when the bond strength was low, large number of abrasives drop off. When the abrasive-blinder ratio was high, the abrasive could easily drop off, when the abrasive-blinder ratio was low, the number of effective abrasive was small, and the rough peak could not be effectively removed.

liangzhongyanseheqiujing8.txt

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