drilling one or more of the cutting blade

Cars and main differences between drilling, drilling one or more of the cutting blade; drilling edge on the cutting speed varies between 0 and the actual cutting speed, that is, the cutting speed, the  Sanding disc lower the more severe cutting conditions nevertheless twist drill center feed is still great. Drill bit along the blade edge geometry varies greatly (cutting angle, clearance angle, wedge angle, tilt angle). Sharp chisel bit different levels according to the axial force on the drill bit has a significant impact; space inside the hole is closed, the discharge of cuttings from the borehole is greatly hindered or periodically under the control chip cooling lubricant circulation can this situation be improved.
If successfully exploited when turning on the measured data to simulate the drilling process, then all of these  standard abrasives challenges as well as on the chip with the twist drill pilot survey conducted difficulties encountered can get a better solution.In order to take into account in the analysis of the drill along the drill blade edge geometry of the blade changes, drilling can be divided into concentric sectors (see Figure 3). If simply assumed to be a sector of the cutting performance is constant, then from a range with the corresponding cutting edge geometry and the data in the test data, must also be translated into the drill holes. The cutting force is all holes on the sum of all the sectors.