Deep hole drilling deep hole drills specifically for machining. In the machining of the hole depth and usually the ratio of pore diameter larger than the hole 6 is called a deep hole. When deep drilling, cooling and chip removal difficult, and because of the rigidity of the drill slender and poor, prone to bending and vibration. With the pressure of deep hole drilling are generally required to solve the cooling and chip cooling system problems.

Deep drilling in the course should pay attention to the following issues:

1. Arbor by limiting aperture, the small diameter and large length, resulting in poor rigidity, low strength, easy to produce vibration, ripple, taper cutting, and affect the hole straightness and surface roughness.
 
2. When drilling and reaming, coolant without using a special device, the input to the cutting area is difficult, so reducing tool life and chip too difficult.

3. In the deep hole machining process, the cutting tool can not be directly observed, the listening experience can only work with the sound cutting to see chips, hand touch vibration and temperature of the workpiece, the concept of the instrument (oil pressure gauge and meter), to determine the cut process is normal.
 
4. chips overcome all difficulties, we must use a reliable means to control the breaker and the length and shape of the chip, in order to facilitate a smooth excluded prevent chip clogging.

5. In order to ensure the smooth progress and reach deep processing quality should be required in the process, should be increased within the tool (or outside) chip conveyor, tool guiding and supporting devices and high-pressure cooling and lubrication system.

Changzhou too good Tools Co., Ltd. specializes in producing all kinds drills, carbide and high speed steel materials include, layer for the famous German brand Balzers. I produced the drill bit comprises a spiral groove, straight flute drill, step drills, deep hole drilling, with coolant holes drilled, widely used in various types of mechanical processing field machining, automotive, mold and so on.

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