1: Use the shortest drill possible when drilling with twist drill bits2: Use a split-point twist drill bits if possible. Split-point begin removing material on contract and drill more efficientlyWarni ...

Successful drilling with the twist dril bits involves three elements:1: Forming a chip2: Accommodating a chip3: Evacuating a chip

Conventional point(118 degree) twist dril bitsPerformance benefit:1: General purpos2: Widely available3: Acceptable drill lift4: Best suited in mild steel and aluminiumComments1: Not self-centering&nb ...

After regrinding the point and web thinning of the twist drills, it is important to visually inspect the drill bits. The following points need to check1:  The point surfaces are ground smoothly.2 ...

After removing the worn areas of the twist drill bits, the next step is to restore the approximate web thickness of the drill, which has been shortened. The webs in the most twist drill bits increase ...

After removing the worn areas of the drill, the surfaces of the point must be reground.The two cone-shaped surfaces intersect the faces of the flutes to form the cutting lips. They also form the chise ...

Drill bits wear usually begins at the corners of the drill, as a slight rounding. The cutting edges or lips and the chisel edge begin to wear at the same time.Because of this the surface has no c ...

Web of the twist dril bits is the central portion of the body that joins the lands. The extreme end of the web forms the chisel edge of a two-flute drill.Web thickness of the twist drill bits is the t ...

Split point of the twist drill bits is a special point configuration that eliminates "walking" on the workpiece surface when start drilling, so holes stary on center.

The speed of a drill bits is determined by the rate which the outer edge of the tool rotates in relation to the material being cut. In general, the SFM is within a range based upon the workpiece mater ...