Optional Tungsten Carbide Drill Considerations - Processing Stability

In addition to considering drilling accuracy requirements, the need to consider the stability of the machine tool when selecting tungsten carbide drill. Machine stability is essential for the safety and drilling precision drill life, and therefore need to carefully examine the machine spindle, fixture and accessories working condition. Also, consider the stability of the drill itself. For example, the overall rigidity of the best tungsten carbide drill, so you can achieve high precision. The poor structural stability carbide indexable insert drills, prone to deflection. This drill is installed on two indexable inserts, wherein the inserts for the central portion of the machined hole in the outer cutter from the inner blade to the outer edge of the processing portion at the outer diameter. Since only the initial stage in the process of cutting into the inner blades, drill bits in an unstable state, easily causes deflection of the drill body, the drill bit and the longer, the greater the amount of deflection. Therefore, when using longer than 4D carbide indexable insert drills and drilling, drilling should begin at an appropriate stage to reduce the amount of feed, cutting into the stable phase after the feed rate to normal levels.