Types of drill bits lathe1/12/2024 ![]() Point: The part has a cone shape and is the end point of the drill bit found at 180°. ![]() Body: It is the main part of a drill bit which is between the shank and the point.Below are parts common to all types of drill bits used in part manufacturing: Nevertheless, they have the same parts with little or no alteration. For accurate drilling, start slowly and gradually increase the speed to an appropriate RPM.Every type of drill bit is unique. This step prevents damage from breaking the drill bit. Damaged or blunt edges make accidents.ĭrilling too deeply will result in the centre only making touch with the hole’s sharp outer edge, which is a poor bearing surface. Like that, drill bits must be carefully observed before drilling. ![]() Therefore, those types of drill bits cannot re-sharpen. Must be careful about the tip of the drill bitĪs mentioned earlier, some of the centre drill bits have coatings. Therefore, accidents can be avoided by breaking the bit.ģ. Use lubricant oil for efficient drilling.Īpplying lubricant can prevent friction between the centre drill bit and the metal surface and control the temperature. After determining the size of the hole you need, you should select the appropriate centre drill bit.Ģ. SizeĬentre Drill Bit Size Chart 05 Tips to Use Center Drill BitsĪs mentioned earlier, there is a market centre drill bit range of various sizes. The center drill size can be used to choose the size of the center hole, which can subsequently be controlled by drilling depth. You will find it in the market in unique numbers. Those are Įvery drill type has a few more sizes. We have to consider a few more parts of the centre drill bit. It has made with carbide and can be used on many metals. When you need to precise pilot hole, you can use a spotting hole drill bit.
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