Bit of common sense

A bit, including a tool rod (1), tool rod has a sophisticated, cutting-edge, there are two on a principal plane (C - C) on the cutting blade (5, 5 '), described in the cutting blade (5, 5 ') have in common the second plane (E - E) on the center of the orientation of the short cutting blade. The cutting edge forms a point center cutting edge for entering the workpiece and thereby aligning the bit into the center. On the tool bar, two chip discharge grooves (6, 6 ') are arranged, and the chip discharge groove (6, 6 ') extends from the tip to the bottom end. On any section along the tool holder, chip groove on the GuanPing are located in the position of the radial relative to each other, the in-plane and in tube on both sides of the blade with two common blade with plane (F -) F to 90 °, described in the tool holder has the most rigid in the plane. The second plane cutting blade (E - E) take plane orientation and blade or cutter bar at the bottom of the main direction of the rigid (F - F) into about 90 ° Angle.