Abstract: This paper presents the grinding control method and the grinding wheel wear compensation algorithms bymeasuring the height of the saw bit. Before and after processing the saw bit,the CNC system obtains the height ofthe saw bit by applying the displacement sensor,which helps to obtain a series of grinding parameters and controlthe grinding process. The feeder manipulator controlled by an independent type PLC completes the feeding andtransporting actions. By combining of the displacement sensor with the feeder manipulator,the grinding machinecompletes the grinding work automatically. The partially parallel running between the feeder manipulator action andthe saw grinding work saves a lot of time and achieves the objectives of high accuracy,high efficiency and easy op-eration.