This paper deals with the two adaptive control functions and their integration for drilling process. One is the feed rate over-ride type adaptive control. In our study this function is also quite effective for the common axial depth applications of high speed drilling of automotive parts. The other function is an automatic pecking which is shown to be a useful method to avoid the tool breakage due to the chip jamming in the case of deep hole drilling. In both cases, the cutting torque and thrust force are monitored through the motor current of the spindle motor and the feed drive servo motor, and additional sensor installation is not necessary to realize adaptive control. The integration of those functions in the whole drilling process has been studied and the intelligent drilling scheme is proposed and tested.