Using method of core drill bit

Non-core drill bit in use process, because of the existence of these problems, at the same time by the workpiece material, quality requirements, different situations such as restrictions on  core drill bits site, the technical measures adopted accordingly in order to change. 1) due to the  diameter  core drill bits bit of low strength, poor rigidity, easy to break, so the beginning of  core drill bits, the feed force should be light, prevent the  core drill bits bending and sliding, so as to ensure the correct position before cutting  core drill bits. Note that the strength of the hand and feel feeding, when the bit bouncing, let it have a buffer range, in order to prevent the bit broken, sometimes as long as the feed force is very . The feed force is too , manual feed is not easy to feel it, then in the feed mechanism is provided with a  heavy Tuo, by weighing feed purpose. 2) in the core drill bit process, the need to pay attention to the frequent  core core drill bit withdrawing, promptly filed a bit. Because of the  diameter  core drill bits work, chip groove is narrow, chip is not smooth, so we should timely return  core drill bits chip, annealing times and hole  core drill bits depth is proportional to, can also take the opportunity to enter the cooling liquid or cooling in air. 3) use high precision  core drill bits machine,  core drill bitsing machine for  diameter  core drill bits requirements spindle sensitivity and high rotation accuracy,  vibration, good rigidity, the spindle runout should be less than 0.005mm,  spring clamping with special  core drill bits bits, and not the  core drill bits chuck or three jaw chuck clamp  core drill bits. Using circlip clamp can make accurate and reliable positioning, uniform stress and can offset a portion of deflection error, improve the rotation precision  diamond core drill bit, but should never use emery cloth, paper bold  hss core drill bit  handle clamping.